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AIR CONDITIONERS CITY MULTI Models PUHY-P200, P250, P300, P350, P400YGM-A PUHY-P450, P500, P550, P600, P650YGM-A PUY-P200, P250, P300, P350YGM-A Service Handbook Contents 1 Read Before Servicing ................................................................ [1] Items to Be Checked .............................................................. [2] Necessary Tools and Materials .............................................. [3] Piping Materials ...................................................................... [4] Storage of Piping Material ...................................................... [5] Piping Machining .................................................................... [6] Brazing.................................................................................... [7] Airtightness Test ...................................................................... [8] Vacuuming .............................................................................. [9] Vacuum Drying........................................................................ [10] Changing Refrigerant.............................................................. [11] Remedies to be taken in case of a refrigerant leak................ [12] Characteristics of the Conventional and the New Refrigerants .. [13] Notes on Refrigerating Machine Oil........................................ 6 6 7 8 10 11 12 13 13 14 15 15 16 17 2 Restrictions .................................................................................. [1] Electrical Work & M-NET control ............................................ [2] Types of Switch Setting and Address Setting ........................ [3] Examples of system connection ............................................ [4] Restrictions on Refrigerant Piping Length.............................. 18 18 19 21 35 3 Components of the Outdoor Unit ................................................ [1] Appearance of the Components and Refrigerant Circuit........ [2] Control Box ............................................................................ [3] Circuit Board .......................................................................... 37 37 43 45 4 Remote Controller ........................................................................ [1] Functions and Specifications of MA and ME Remote Controllers.... [2] Group Setting and Interlocking Settings that are Made on the ME Remote Controller .................................................... [3] Interlocking Setting that is Made on the MA Remote Controller ...... [4] Switching to the built-in Thermo on the remote controller ...... 49 49 50 53 54 5 Electrical Wiring Diagram ............................................................ [1] PUHY-P200, P250, P300, P350, P400YGM-A / PUY-P200, P250, P300, P350YGM-A .. [2] PUHY-P450, P500, P550, P600, P650YGM-A .............................. [3] Power Dispatching Extension Unit for the Transmission Lines ........ 55 55 56 57 6 Refrigerant Circuit ........................................................................ 58 [1] Refrigerant Circuit Diagram .................................................... 58 [2] Functions of Principal Parts.................................................... 62 7 Control.......................................................................................... [1] Dip Switch Functions and Their Factory Settings .................. [2] Controlling the Outdoor Unit .................................................. [3] Operation Flow Chart ............................................................ 64 64 69 76 8 Test Run ...................................................................................... [1] Check Items before Test Run.................................................. [2] Test Run Method .................................................................... [3] Operating Characteristics and Refrigerant Amount................ [4] Adjustment and Judgment of Refrigerant Amount ................ [5] Refrigerant Volume Adjustment Mode Operation .................. [6] Symptoms that do not Signify Problems ................................ [7] Standard Operation Data (Reference Data) .............................. 81 81 81 82 82 84 86 87 9 Troubleshooting ............................................................................ [1] Check Code List .................................................................... [2] Responding to Error Display on the Remote Controller ........ [3] Investigation of Transmission Wave Shape/Noise .................. [4] Troubleshooting of Principal Parts .......................................... [5] Refrigerant Leak .................................................................... [6] Compressor Replacement Instructions (only P450-P650 types).... [7] Collecting the Cooling Liquid from the Accumulator (Only P450-P650 types) .. 95 95 98 131 134 151 153 154 0 LED display .................................................................................. 155 [1] LED Monitor Display .............................................................. 155 Safety Precautions Before installing the unit, be sure to carefully read all of the following safety precautions. These precautions provide important information regarding safety. Be sure to follow them to ensure safety. Symbols used in the text Warning: Failure to follow all instructions may result in serious personal injury or death. Caution: Failure to follow all instructions may result in personal injury or damage to the unit. Symbols used in the illustrations : Indicates an action that must be avoided. : Indicates that important instructions must be followed. : Indicates a part which must be grounded. : Beware of electric shock (This symbol is displayed on the main unit label.) <Color : Yellow> After reading this handbook, hand it over to those who will be using the unit. The user of the unit should keep this manual at hand and make it available to those who will be performing repairs or relocating the unit. Also, make it available to the new user when the user changes hands. Warning : Carefully read the labels affixed to the main unit. Have the unit professionally installed. • Be sure to carefully follow each step in this handbook when installing the unit. Improper installation by an unqualified person may result in water leak, electric shock, or fire. • Place the unit on a stable, level surface that withstands the weight of the unit to prevent the unit from tipping over or falling causing injury as a result. Have all electrical work performed by a licensed electrician according to the local regulations and the instructions given in this manual. Secure a circuit designated exclusively to the unit. Only use specified cables for wiring. Securely connect each cable, and make sure that the cables are not straining the terminals. • Improper installation may result in water leak, electric shock, smoke or fire. • Improper installation or a lack of circuit capacity may cause the unit to malfunction or present a risk of electric shock, smoke, and fire. Cables not connected securely and properly may generate heat and cause fire. Securely attach the terminal cover (panel) on the unit. Take necessary safety measures against typhoons and earthquakes to prevent the unit from falling over. • Do not make any changes or modifications to the unit. In case of problems, consult the dealer. Only use Refrigerant R410A as indicated on the unit when installing or relocating the unit. • • If repairs are not made properly, the unit may leak water and present a risk of electric shock, or it may produce smoke or cause fire. -1- If installed improperly, dust and/or water may enter the unit and present a risk of electric shock, smoke, or fire. The use of any other refrigerant or an introduction of air into the unit circuit may cause the unit to run an abnormal cycle and cause the unit to burst. Warning : Carefully read the labels affixed to the main unit. When installing the unit in a small room, safeguard against hypoxia that results from leaked refrigerant reaching the threshold level. Do not touch the fins on the heat exchanger with bare hands: they are sharp and dangerous. • In the event of a refrigerant gas leak, provide adequate ventilation to the room. • Consult the dealer for necessary measures to take. When relocating the air conditioner, consult the dealer or a specialist. If leaked refrigerant gas is exposed to a heat source, noxious gases may form. • Improper installation may result in water leak, electric shock, or fire. With All-Fresh type air conditioners, outdoor air may be directly blown into the room upon thermo off. Take this into consideration when installing the unit. After completing the service work, check for a refrigerant gas leak. • • Direct exposure to outdoor air may present a health hazard, and it may also cause food items to deteriorate. Do not try to defeat the safety features of the devices, and do not change the settings. • If leaked gas refrigerant is exposed to a heart source such as fan heater, stove, and electric grill, noxious gases may form. Only use specified parts. • Defeating the safety features on the unit such as the pressure switch and temperature switch or using parts other than those specified by Mitsubishi Electric may result in fire or explosion. Have the unit professionally installed. Improper installation may cause water leak, electric shock, smoke, or fire. Precautions for Handling Units for Use with R410A Caution Do not use the existing refrigerant piping • • Use a vacuum pump with a reverse-flow-check valve. The old refrigerant and refrigerator oil in the existing piping contain a large amount of chlorine, which will cause the refrigerator oil in the new unit to deteriorate. R410A is a high-pressure refrigerant, and the use of the existing piping may result in bursting. • Do not use the following tools that have been used with the conventional refrigerants.Prepare tools that are for exclusive use with R410A. (Gauge manifold, charging hose, gas leak detector, reverse-flow check valve, refrigerant charge base, vacuum gauge, and refrigerant recovery equipment.) Use refrigerant pipes made of C1220 phosphorus deoxidized copper categorized under H3000 (Copper and Copper Alloy Seamless Pipes and Tubes), a standard set by JIS. Keep the inner and outer surfaces of the pipes clean and free of contaminants such as sulfur, oxides, dust/dirt, shaving particles, oils, and moisture. • If other types of valves are used, the vacuum pump oil will flow back into the refrigerant cycle and cause the refrigerator oil to deteriorate. • Contaminants inside the refrigerant piping will cause the refrigerant oil to deteriorate. • -2- If refrigerant and /or refrigerant oil left on these tools are mixed in with R410A, or if water is mixed with R410A, it will cause the refrigerant to deteriorate. Since R410A does not contain chlorine, gas-leak detectors for conventional refrigerators will not work. Caution Do not use a charging cylinder. Store the piping to be used during installation indoors, and keep both ends of the piping sealed until immediately before brazing. (Keep elbows and other joints wrapped in plastic.) • • If dust, dirt, or water enters the refrigerant cycle, it may cause the oil in the unit to deteriorate or may cause the compressor to malfunction. Exercise special care when handling the tools. • Use a small amount of ester oil, ether oil, or alkylbenzene to coat flares and flange connections. • A large amount of mineral oil will cause the refrigerating machine oil to deteriorate. An introduction of foreign objects such as dust, dirt, or water into the refrigerant cycle will cause the refrigerating machine oil to deteriorate. Only use R410A refrigerant. • Use liquid refrigerant to charge the system. • The use of charging cylinder will change the composition of the refrigerant and lead to power loss. The use of refrigerants containing chlorine (i.e. R22) will cause the refrigerant to deteriorate. Charging the unit with gas refrigerant will cause the refrigerant in the cylinder to change its composition and will lead to a drop in performance. Before Installing the Unit Warning Do not install the unit in a place where there is a possibility of flammable gas leak. When installing the unit in a hospital, take necessary measures against noise. • • Leaked gas accumulated around the unit may start a fire. High-frequency medical equipment may interfere with the normal operation of the air conditioning unit or the air conditioning unit may interfere with the normal operation of the medical equipment. Do not use the unit to preserve food, animals, plants, artifacts, or for other special purposes. • Do not place the unit on or over things that may not get wet. The unit is not designed to provide adequate conditions to preserve the quality of these items. • Do not use the unit in an unusual environment. • • • The use of the unit in the presence of a large amount of oil, steam, acid, alkaline solvents, or special types of sprays may lead to a remarkable drop in performance and/or malfunction and presents a risk of electric shock, smoke, or fire. The presence of organic solvents, corroded gas (such as ammonia, sulfur compounds, and acid) may cause gas or water leak. -3- When humidity level exceeds 80% or when the drainage system is clogged, indoor units may drip water. Installation of a centralized drainage system for the outdoor unit may also need to be considered to prevent water drips from the outdoor units. Before Installing (Relocating) the Unit or Performing Electric Work Caution Use breakers and fuses (electrical current breaker, remote switch <switch + Type-B fuse>, molded case circuit breaker) with a proper current capacity. Ground the unit. • Do not connect the grounding on the unit to gas pipes, water pipes, lightning rods, or the grounding terminals of telephones. Improper grounding presents a risk of electric shock, smoke, fire, or the noise caused by improper grounding may cause the unit to malfunction. • Make sure the wires are not subject to tension. • The use of large-capacity fuses, steel wire, or copper wire may damage the unit or cause smoke or fire. Do not spray water on the air conditioners or immerse the air conditioners in water. If the wires are too taut, they may break or generate heat and/or smoke and cause fire. • Water on the unit presents a risk of electric shock. Install a breaker for current leakage at the power source to avoid the risk of electric shock. Periodically check the platform on which the unit is placed for damage to prevent the unit from falling. • • Without a breaker for current leakage, there is a risk of electric shock, smoke, or fire. When installing draining pipes, follow the instructions in the manual, and make sure that they properly drain water so as to avoid dew condensation. Use wires that are specified in the installation manual. • If the unit is left on a damaged platform, it may topple over, causing injury. The use of other types of wires presents a risk of electrical current leak, electric shock, smoke, or fire. • If not installed properly, they may cause water leaks and damage the furnishings. Exercise caution when transporting products. • • • • Do not try to move equipments over 20kg (approx. 44 lbs.) alone. Do not use the PP bands used on some packages for transportation. Wear protective gloves to avoid injury caused by touching the fins on the heat exchanger with bare hands. When using a suspension bolt to transport the heatsource unit, use a four-point suspension. A threepoint suspension does not provide adequate stability and presents a risk of accidents. Properly dispose of the packing materials. • Things such as nails and wood pieces may be included in the package. Dispose of them properly to prevent injury. • Plastic bags present a choking hazard to children. Tear up the plastic bags before disposing of them to prevent accidents. -4- Before the Test Run Caution Turn on the unit at least 12 hours before the test run. Do not turn off the power immediately after stopping the unit. • • Keep the unit on throughout the season. Turning the unit off during the season may cause problems. Do not operate the unit without air filters. Do not operate switches with wet hands to avoid electric shock. • Do not touch the refrigerant pipes with bare hands during and immediately after operation. • Depending on the state of the refrigerant in the system, certain parts of the unit such as the pipes and compressor may become very cold or hot and may subject the person to frost bites or burning. Do not operate the unit without panels and safety guards in their proper places. • Allow for at least five minutes before turning off the unit; otherwise, the unit may leak water or experience other problems. They are there to keep the users from injury from accidentally touching rotating, high-temperature, or high-voltage parts. -5- Dust particles in the air may clog the system and cause malfunction. ¡ Read Before Servicing [1] Items to Be Checked 1. Verify the type of refrigerant used by the unit to be serviced. Refrigerant Type : R410A 2. Check the symptom exhibited by the unit to be serviced. Look in this service handbook for symptoms relating to the refrigerant cycle. 3. Be sure to carefully read the Safety Precautions at the beginning of this document. 4. Prepare necessary tools: Prepare tools exclusive for use with each refrigerant type. Refer to P7 for more information. 5. If the refrigerant circuit is opened (to repair a gas leak etc.), the dryer needs to be replaced. Only use the dryer designed specifically for Citi Multi YGM-A. The use of other dryers may result in malfunctions. ✻ Replace the dryer after completing all the repairs on the refrigerant circuit. (If left exposed to air, the dryer will absorb moisture. Replace the dryer as quickly as possible after removing the old one.) ✻ When all of the following conditions are met, the replacement of drier is not necessary. (1) Do not leave the refrigerant circuit longer than 2 hours. (2) Cover the opening end with a cap or tape to keep moisture from entering. (3) Also cover the opening end of the new part with a cap or tape (4) Do not perform the task in the rain. (5) Evacuate the refrigerant circuit as specified. 6. Verification of the connecting pipes: Verify the type of refrigerant used for the unit to be moved or replaced. • Use pipes made of phosphorus deoxidized copper. Keep the inner and outer surfaces of the pipes clean and free of contaminants such as sulfur, oxides, dust/dirt, shaving particles, oils, and moisture. • Contaminants inside the refrigerant piping will cause the refrigerant oil to deteriorate. 7. If there is a gas leak or if the remaining refrigerant is exposed to an open flame, a noxious gas hydrofluoric acid may form. Keep workplace well ventilated. CAUTION 1. Install new pipes immediately after removing old ones to keep moisture out of the refrigerant circuit. 2. Chloride in some types of refrigerants such as R22 will cause the refrigerating machine oil to deteriorate. -6- [2] Necessary Tools and Materials Prepare the following tools and materials necessary for installing and servicing the unit. [Necessary tools for use with R410A (Adaptability of tools that are for use with R22 and R407C)] 1. To be used exclusively with R410A (not to be used if used with R22 or R407C) Tools/Materials Use Notes Gauge Manifold Charging Hose Refrigerant Recovery Equipment Refrigerant Cylinder Evacuating, refrigerant charging Evacuating, refrigerant charging Refrigerant recovery Refrigerant charging Refrigerant Cylinder Charging Port Flare Nut Refrigerant charging Connecting the unit to piping 5.09MPa on the High-pressure side. Hose diameter larger than the conventional ones. Write down the refrigerant type. Pink in color at the top of the cylinder. Hose diameter larger than the conventional ones. Use Type-2 Flare nuts. (That are in compliance with JIS B 8607). 2. Tools and materials that may be used with R410A with some restrictions Tools/Materials Use Notes Gas leak detector Vacuum Pump Detection of gas leaks Vacuum drying Flare Tool Flare machining of piping Refrigerant Recovery Equipment Recovery of refrigerant The ones for HFC type refrigerant may be used. May be used if a reverse flow check adaptor is attached. Changes have been made in the flare machining dimension. Refer to the next page. May be used if designed for use with R410A. 3. Tools and materials that are used with R22 or R407C that can also be used with R410A Tools/Materials Use Notes Vacuum Pump with a Check valve Vacuum drying Bending pipes Bender Tightening flare nuts Torque Wrench Pipe Cutter Welder and Nitrogen Cylinder Refrigerant Charging Meter Vacuum Gauze Only ø 12.70 (1/2”) and ø 15.88 (5/8”) have a larger flare machining dimension. Cutting pipes Welding pipes Refrigerant charging Checking vacuum degree 4. Tools and materials that must not be used with R410A Tools/Materials Charging Cylinder Use Notes Refrigerant Charging Must not be used with R410A-type units. Tools for R410A must be handled with special care; keep moisture and dust from entering the cycle. -7- [3] Piping Materials Do not use the existing piping! OK NO New Piping Existing Piping <Types of copper pipe> Type-O pipes Type-1/2H pipes Soft copper pipes (annealed copper pipes) They can be bent easily with hands. Hard copper pipes (straight pipes) Stronger than type-O pipes of the same radial thickness. • The distinction between type-O and type-1/2H pipes is made based on the strength of the pipes themselves. • Type-O pipes are soft and can easily be bent with hands. • Type-1/2H pipes are considerably stronger than type-O pipes of the same radial thickness. <Types of Copper Pipes (Reference)> Maximum Operation Pressure 3.45 MPa 4.30 MPa Applicable Refrigerants R22, R407C etc. R410A ✻ Use pipes that meet the local standards. <Piping Materials/Radial Thickness> Use pipes made of phosphorus deoxidized copper. Since the operation pressure of the units that use R410A is higher than that of the units for use with R22, use pipes with at least the radial thickness specified in the chart below. (Pipes with a radial thickness of 0.7 mm or less may not be used.) Size(mm) ø 6.35 ø 9.52 ø 12.7 ø 15.88 ø 19.05 ø 22.2 ø 25.4 ø 28.58 ø 31.75 Size(inch) 1/4” 3/8” 1/2” 5/8” 3/4” 7/8” 1” 1 1/8” 1 1/4” Radial Thickness(mm) 0.8t 0.8t 0.8t 1.0t 1.0t 1.0t 1.0t 1.0t 1.1t Type Type-O pipes Type-1/2H or H pipes ✻ Although it was possible to use type-O for pipes with a size of up to ø19.05 (3/4”) with conventional refrigerants, use type-1/2H pipes for units that use R410A. (Type-O pipes may be used if the pipe size is ø19.05 and the radial thickness is 1.2t.) ✻ The table shows the standards in Japan. Using this table as a reference, choose pipes that meet the local standards. -8- <Indication of the radial thickness and refrigerant type on the piping materials> “Radial thickness” and “Refrigerant Types” are indicated on the insulation material on the piping materials for the new refrigerant. Indication of the radial thickness (mm) Radial thickness 0.8 1.0 Symbols 08 10 Indication of the refrigerant type Refrigerant type Type1 R22, R407C Type2 R410A Symbol 1 2 <Example of the symbols indicated on the insulation material> ~08-2~ Appears every 1 m The type of piping materials can also be found on the package. <Example of a label found on the package> 2 : common to type 1 and type 2 Refrigerant Type : R22,R407C,R410A Bore diameter and radial thickness of the copper piping : 9.52✕0.8, 15.88✕1.0 <Flare Machining (type-O and OL only)> The flare machining dimensions for units that use R410A is larger than those for units that use R22 in order to increase air tightness. Flare Machining Dimension(mm) Dimension A External dimension of pipes ø 6.35 ø 9.52 ø 12.7 ø 15.88 ø 19.05 Size 1/4” 3/8” 1/2” 5/8” 3/4” Dimension A R410A 9.1 13.2 16.6 19.7 24.0 R22 9.0 13.0 16.2 19.4 23.3 If a clutch type flare tool is used to machine flares on units that use R410A, make the protruding part of the pipe between 1.0 and 1.5mm. Copper pipe gauge for adjusting the length of pipe protrusion is useful. <Flare Nut> Type-2 flare nuts instead of type-1 s are used to increase the strength. The size of some of the flare nuts have also been changed. Flare nut dimension(mm) Dimension B External dimension of pipes ø 6.35 ø 9.52 ø 12.7 ø 15.88 ø 19.05 Size 1/4” 3/8” 1/2” 5/8” 3/4” Dimension B R410A(Type2) R22(Type1) 17.0 17.0 22.0 22.0 26.0 24.0 29.0 27.0 36.0 36.0 ✻ The table shows the standards in Japan. Using this table as a reference, choose pipes that meet the local standards. -9- [4] Storage of Piping Material 1. Storage location OK NO Store the pipes to be used indoors. (Warehouse at site or owner’s warehouse) Storing them outdoors may cause dirt, waste, or water to infiltrate. 2. Pipe sealing before storage OK NO Both ends of the pipes should be sealed until immediately before brazing. Wrap elbows and T’s in plastic bags for storage. ✻ The new refrigerator oil is 10 times more hygroscopic than the conventional refrigerator oil (such as Suniso). Water infiltration in the refrigerant circuit may deteriorate the oil or cause a compressor failure. Piping materials must be stored with more care than with the conventional refrigerant pipes. - 10 - [5] Piping Machining Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections. Reason : 1. The refrigerator oil used for the equipment is highly hygroscopic and may introduce water inside. Notes : • Introducing a great quantity of mineral oil into the refrigerant circuit may also cause a compressor failure. • Do not use oils other than ester oil, ether oil or alkylbenzene. - 11 - [6] Brazing No changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt, etc.) does not enter the refrigerant circuit. Example : Inner state of brazed section When non-oxide brazing was not used When non-oxide brazing was used Items to be strictly observed : 1. Do not conduct refrigerant piping work outdoors on a rainy day. 2. Apply non-oxide brazing. 3. Use a brazing material (BCuP-3) which requires no flux when brazing between copper pipes or between a copper pipe and copper coupling. 4. If installed refrigerant pipes are not immediately connected to the equipment, then braze and seal both ends of them. Reasons : 1. The new refrigerant oil is 10 times more hygroscopic than the conventional oil. The probability of a machine failure if water infiltrates is higher than with conventional refrigerant oil. 2. A flux generally contains chlorine. A residual flux in the refrigerant circuit may generate sludge. Note : • Commercially available antioxidants may have adverse effects on the equipment due to its residue, etc. When applying non-oxide brazing, use nitrogen. - 12 - [7] Airtightness Test No changes from the conventional method. Note that a refrigerant leakage detector for R22 or R407C cannot detect R410A leakage. NO NO Halide torch R22 or R407C leakage detector Items to be strictly observed : 1. Pressurize the equipment with nitrogen up to the design pressure and then judge the equipment’s airtightness, taking temperature variations into account. 2. When investigating leakage locations using a refrigerant, be sure to use R410A. 3. Ensure that R410A is in a liquid state when charging. Reasons : 1. Use of oxygen as the pressurized gas may cause an explosion. 2. Charging with R410A gas will lead the composition of the remaining refrigerant in the cylinder to change and this refrigerant can then not be used. Note : • A leakage detector for R410A is sold commercially and it should be purchased. [8] Vacuuming 1. Vacuum pump with check valve A vacuum pump with a check valve is required to prevent the vacuum pump oil from flowing back into the refrigerant circuit when the vacuum pump power is turned off (power failure). It is also possible to attach a check valve to the actual vacuum pump afterwards. 2. Standard degree of vacuum for the vacuum pump Use a pump which reaches 65Pa or below after 5 minutes of operation. In addition, be sure to use a vacuum pump that has been properly maintained and oiled using the specified oil. If the vacuum pump is not properly maintained, the degree of vacuum may be too low. 3. Required accuracy of the vacuum gauge Use a vacuum gauge that can measure up to 650Pa. Do not use a general gauge manifold since it cannot measure a vacuum of 650Pa. 4. Evacuating time • Evacuate the equipment for 1 hour after 650Pa has been reached. • After envacuating, leave the equipment for 1 hour and make sure the that vacuum is not lost. 5. Operating procedure when the vacuum pump is stopped In order to prevent a backflow of the vacuum pump oil, open the relief valve on the vacuum pump side or loosen the charge hose to drawn in air before stopping operation. The same operating procedure should be used when using a vacuum pump with a check valve. - 13 - [9] Vacuum Drying Photo 1 15010H Photo 2 14010 Recommended vacuum gauge : ROBINAIR 14010 Thermistor Vacuum Gauge 1. Vacuum pump with reverse-flow check valve (Photo 1) To prevent vacuum pump oil from flowing back into the refrigerant circuit upon turning off the vacuum pump’s power source, use a vacuum pump equipped with a reverse flow check valve. A check valve may also be added to the vacuum pump currently in use. 2. Standard of vacuum degree (Photos 1 and 2) Use a vacuum pump that shows a vacuum degree of 65Pa or less after 5 minutes of operation. Use a pump wellmaintained with an appropriate lubricant. 3. Required precision of vacuum gauge Use a vacuum gauge that registers a vacuum degree of 650Pa and measures at intervals of 130Pa. (A recommended vacuum gauge is shown in Photo 2.) Do not use a vacuum gauge that does not register a vacuum degree of 650Pa. 4. Evacuation time • After the vacuum gauge has registered the vacuum degree of 650Pa, evacuate for 1 hour. (A thorough vacuum drying removes moisture in the pipes.) • Verify that the vacuum degree has not risen by more than 130Pa 1 hour after evacuation. A rise by less than 130Pa is acceptable. • If it has exceeded by more than 130Pa, conduct vacuuming following the instructions in the “6. Special vacuum drying” section. 5. Procedures for stopping vacuum pump To prevent the reverse flow of vacuum pump oil, open the relief valve on the vacuum pump side, or draw in air by loosening the charge hose, and then stop the operation. The same procedures should be followed when stopping a vacuum pump with a reverse-flow check valve. 6. Special vacuum drying • When 650Pa or lower degree of vacuum cannot be attained after 3 hours of evacuation, it is likely that water has penetrated the system or that there is a leak. When water infiltration is suspected, vacuum with nitrogen gas. After breaking the vacuum, pressurize the system with nitrogen gas to a degree of 0.05MPa, and conduct an evacuation again. Repeat it until 650Pa or lower degree of vacuum is attained or the vacuum pressure rise will be lost. • Only use nitrogen gas for vacuum breaking. (Use of oxygen may cause an explosion.) - 14 - [10] Changing Refrigerant R410A must be in a liquid state when charging. For a cylinder with a syphon attached For a cylinder without a syphon attached Cylinder Cylinder Cylinder color identification R407C-Gray R410A-Pink Charged with liquid refrigerant Valve Valve Liquid Liquid Reasons : 1. R410A is a pseudo-azeotropic refrigerant (boiling point R32 = -52˚C, R125 = -49˚C) and can roughly be handled in the same way as R22; however, be sure to fill the refrigerant from the liquid side, for doing so from the gas side will somewhat change the composition of the refrigerant in the cylinder. Note : • In the case of a cylinder with a syphon, liquid R410A is charged without turning the cylinder up side down. Check the type of cylinder before charging. [11] Remedies to be taken in case of a refrigerant leak When refrigerant leaks, additional refrigerant may be charged. (Add the refrigerant from the liquid side.) ✻Refer to 9-[5]. - 15 - [12] Characteristics of the Conventional and the New Refrigerants 1. Chemical property As with R22, the new refrigerant (R410A) is low in toxicity and a chemically stable non-flammable refrigerant. However, because the specific gravity of steam is greater than that of air, leaked refrigerant in a closed room will accumulate at the bottom of the room and may cause hypoxia. Also, leaked refrigerant exposed directly to an open flame will generate noxious gasses. Use the unit in a well-ventilated room. New Refrigerant (HFC system) Composition (wt%) Type of refrigerant Chloride Safety Class Molecular Weight Boiling Point Steam Pressure (25˚C,MPa)(gauge) Saturated Steam Density (25˚C,kg/m3) Flammability Ozone Depletion Coefficient (ODP)✻1 Global Warming Coefficient (GWP)✻2 Refrigerant charging method Addition of refrigerant in case of a leak R410A R32/R125 (50/50) Simulated azeotropic refrigerant Not contained A1/A1 72.6 -51.4 1.557 64.0 Non-flammable 0 1730 Liquid charging Possible R407C R32/R125/R134a (23/25/52) Non-azeotropic refrigerant Not contained A1/A1 86.2 -43.6 0.9177 42.5 Non-flammable 0 1530 Liquid charging Possible ✻1: When CFC11 is used as a reference Conventional Refrigerant (HCFC system) R22 R22 (100) Single refrigerant Contained A1 86.5 -40.8 0.94 44.4 Non-flammable 0.055 1700 Gas charging Possible ✻2: When CO2 is used as a reference 2. Refrigerant Composition Because R410A is a simulated azeotropic refrigerant, it can be handled in almost the same manner as a single refrigerant such as R22. However, if the refrigerant is removed in the vapor phase, the composition of the refriger ant in the cylinder will somewhat change. Remove the refrigerant in the liquid phase. Additional refrigerant may be added in case of a refrigerant leak. 3. Pressure Characteristics The pressure in the units that use R410A is 1.6 times as great as that in the units that use R22. Pressure (gauge) Temperature (˚C) -20 0 20 40 60 65 R410A MPa 0.30 0.70 1.34 2.31 3.73 4.17 - 16 - R407C MPa 0.18 0.47 0.94 1.44 2.44 2.75 R22 MPa 0.14 0.40 0.81 1.44 2.33 2.60 [13] Notes on Refrigerating Machine Oil 1. Refrigerating Machine Oil in the HFC Refrigerant System HFC type refrigerants use a refrigerating machine oil different from that used in the R22 refrigerant system. Please note that the ester oil sealed in the unit is not the same as commercially available ester oil. Refrigerant R22 R407C R410A Refrigerating machine oil Mineral oil Ester oil Ester oil 2. Effects of the ✻Contaminants in the System Refrigerating machine oil used in the HFC system must be handled more carefully than conventional mineral oils. The table below shows the effects of air, moisture, and contaminants in the refrigerating machine oil on the refrigeration cycle. <The Effects of Air, Moisture, and Contaminants in the Refrigerating Machine Oil on the Refrigeration Cycle.> Cause Symptom Expansion valve and capillary freeze Water infiltration Hydrolysis Oxidization Air infiltration Dust, dirt Infiltration of contaminants Sludge formation Generation of acid Oxidization Oil degradation Adhesion to expansion valve and capillary Infiltration of contaminants into the compressor Mineral oil Sludge formation and adhesion etc. Oil degradation Effects on the refrigeration cycle Clogged expansion valve and capillary Poor cooling performance Compressor overheat Poor motor insulation Motor burning Coppering of the orbiting part Locking Burning in the orbiting part Expansion valve/capillary Poor cooling performance Drier clogging Compressor overheat Burning in the orbiting part Expansion valve and capillary clogging Poor cooling performance Compressor overheat Burning in the orbiting part ✻ “ Contaminants ” is defined as moisture, air, process oil, dust/dirt, the wrong types of refrigerant and refrigerating machine oil. - 17 - ™ Restrictions [1] Electrical Work & M-NET control 1. Attention ➀ Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations, and guidance of each electric power company. ➁ Wiring for control (hereinafter referred to as transmission line) shall be (5cm or more) apart from power source wiring so that it is not influenced by electric noise from power source wiring. (Do not insert transmission line and power source wire in the same conduit.) ➂ Be sure to provide designated grounding work to outdoor unit. ➃ Give some allowance to wiring for electrical part box of indoor and outdoor units, because the box is sometimes removed at the time of service work. ➄ Never connect 380~415V(220~240V )power source to terminal block of transmission line.If connected,electrical parts will be burnt out ➅ Use 2-core shield cable for transmission line. If transmission lines of different systems are wired with the same multiplecore cable, the resultant poor transmitting and receiving will cause erroneous operations. Indoor unit Outdoor unit OK Indoor unit Outdoor unit NO 2-core cable Multiplecore cable Remote controller Remote controller 2-core cable 2. Types of control cable Transmission cables M-NET Remote controller cables Type of cable Shielding wire (2-core) CVVS or CPEVS Cable diameter More than 1.25mm2 0.3 ~ 1.25mm2 (0.75 ~ 1.25mm2) ✻1 — When 10m is exceeded, use cables with the same specification as transmission cables. Remarks MA Remote controller cables Sheathed 2-core cable (unshielded) CVV ✻1 Connected with simple remote controller. CVVS : PVC insulated PVC jacketed shielded control cable CPEVS : PE insulated PVC jacketed shielded communication cable CVV : PV insulated PVC sheathed control cable - 18 - 0.3 ~ 1.25mm2 (0.75 ~ 1.25mm2) ✻1 Max length : 200m [2] Types of Switch Setting and Address Setting 1. Switch setting Type and method of switch setting Switch setting vary depending on the system configuration. Make sure to read “[3] Examples of system connection” before conducting electrical work. Turn off the power before setting the switch. Operating the switch while the unit is being powered will not change the setting, and the unit will not properly function. 2. Address setting (1) Address setting varies depending on the system configuration. See “[3] Examples of system connection” section for details. Indoor unit Unit or controller Symbol Main/sub units IC Lossnay M-NET remote controller Address setting range 0, 01~50 (Note 1) LC Setting method Assign the smallest address to the indoor unit to become the main unit within the same group, and then use sequential numbers to assign an address to all the indoor units in the group. (Note 5) If applicable, set the sub BC controllers in an R2 system in the following order: (1) Indoor unit to be connected to the main BC controller (2) Indoor unit to be connected to No.1 sub BC controller (3) Indoor unit to be connected to No.2 sub BC controller Set the address so that (1) < (2) < (3) 00 Assign any unused address after setting all indoor units. 00 Main remote controller RC 101~150 Set to the lowest address of the indoor main unit within the same group + 100. Sub remote controller RC 151~200 (Note 2) Set to the lowest address of the indoor main unit within the same group + 150. MA remote controller MA Outdoor unit OC 0, 51~100 (Note 1, 3, 4) Use the address that equals the sum of the smallest indoor unit address in the same refrigerant system and 50. Hex. unit OS BC controller (Main) BC 52~100 (Note 3, 4) Use the address that equals the sum of the address of the outdoor unit in the same refrigerant system and 1. BC controller (Sub) BS Auxiliary units System controller Factory setting No address setting required. (When operating with 2 remote controllers, the main/sub selector switch must be set. 101 Main 00 Use the address that equals the sum of the smallest address of the indoor unit out of all the indoor units that are connected to the BC controller and 50. When a sub BC controller is connected, the automatic start up function will not be available. Group remote controller GR, SC 201~250 Set to the lowest No. of the group to be controlled + “200.” 201 System remote controller SR, SC 201~250 Choose any number within the range of addresses shown left. 201 ON/OFF remote controller AN, SC 201~250 Set to the lowest No. of the group desired tobe controlled + “200.” 201 Schedule timer (for M-NET) ST, SC 201~250 Choose any number within the range of addresses shown left. 202 Centralized controller (Note 5) TR, SC 0, 201~250 Choose any number within the range of addresses shown left. However when using with the upper SC setting, or wishing to control the k-control units, set to “0.” 000 SC 201~250 Choose any number within the range of ad-dresses shown left. 247 LM adapter Notes: 1. Address setting is not required for a single refrigerant system (with a few exception). 2. When setting M-NET remote controller address to “200,” make it “00.” 3. When setting the outdoor unit and outdoor auxiliary unit address to “100,” make it “50.” 4. When an address in a system overlapped with the outdoor unit or BC controller (Main) address of other refrigerant system, choose an another address within theset range that is not in use (with a few exceptions). 5. When controlling the K-control units; (1) A K-transmission converter (Model name: PAC-SC25KA) is required. To set the address for the K-transmission converter, set it to thelowest address of the K-control unit to be controlled + 200. (2) Set the address of the system controller (G-50A) to “0.” The K-control unit can only be controlled by the system controller with theaddress “0.” (3) To control both K-control unit and M-NET model unit, make the address of the K-control unit larger than that of the indoor unit of M-NET model. Group-register on the system controller so that the group No. and the lowest address of the K-controlled indoor units belonging to thegroup will be identical. - 19 - (2) Setting the power supply selecting connector for the outdoor unit (Factory setting: CN41 is connected.) System Configuration Single refrigerant system Connection with the system controller Power supply unit for the transmission lines _ Grouping operation of different refrigerant systems _ The setting of the power supply selecting connector _ Use CN41 as is (Factory setting) n/a _ n/a Replace the CN41 with CN40 on only one of the outdoor units. ✻Connect the S terminal of the TB7 (terminal block on the outdoor unit) on the outdoor unit whose CN41 was replaced with CN40 to the earth terminal of the electric box. applicable Multiple refrigerant system Connected with the indoor units Connected with the centralized system Unnecessary applicable // n/a Unnecessary (Note2) applicable // n/a (Supplied from the outdoor unit) Applicable applicable // n/a Use CN41 as is (Factory setting) Notes: 1. Will limit the total connectable units in the refrigerant system. 2. The need for a power supply unit for the transmission lines depends on the system configuration. Refer to “ DATA BOOK ” for more details. (3) Setting the centralized control switch on the outdoor unit (factory setting: SW2-1 OFF ) System configuration Setting of the centralized controller switch (SW 2-1) Connection system with the system controller n/a Leave it to OFF. (Factory setting) Connection system with the system controller applicable (Note 1) ON Note: 1. When connecting only the LM adapter, leave SW2-1 to OFF. (4) Various types of control using the connectors on the outdoor unit for input-output signal (various types of connections with optional parts) Category Input Output Function Usage Cooling operation is disabled (thermo OFF) by the external input to the outdoor units. ✻ Can be used as an on-demand control for each refrigerant system. Demand (level) Quiet operation of outdoor units is run with an external input to the outdoor units. (Night mode can be run under the following conditions: Outdoor air temperature below 30˚C when running a cooling operation and above 3˚C when running a heating operation.) Night mode or Demand (Level) ✻ Note1 Forces the outdoor units to run a fan operation by receiving the snow signal from the snow sensor. The operation mode can be switched between cooling and heating with an external input to the outdoor units. Snow sensor Signal input (level) You can switch the operation mode between cooling and heating by input from the outside to the outdoor unit. Auto-changeover Outdoor units’ signal output ✻ Can be used as a device that displays the operation status ✻ Can run an interlocking control operation with external devices Compressor in operation Abnormal operation status Note: 1. Refer to section “ 7 [2] 12. Demand control ” for detailed information on demand control settings. - 20 - Terminal to be used CN3D CN3S CN3N CN51 [3] Examples of system connection 1. System using MA remote controller (1) In the case of single refrigerant system (Automatic address set-up) Control wiring example Interlocking with ventilation L3 L2 L4 Group Group OC IC 00 00 00 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 00 TB5 M1M2 S m1 TB3 TB7 M1M2 S M1M2 LC IC A1 B2 A1 B2 A1 B2 RC MA NO L11 MA L12 Group L13 Group IC IC 00 00 00 TB15 TB5 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 m5 m4 m2 IC A1 B2 A1 B2 A1 B2 A1 B2 MA MA MA MA NO m3 – Example to use shielded wire – Prohibited items 1. M-NET and MA remote controllers can not be connected together to the indoor unit within the same group. 2. MA remote controller of 3 units or more can not be connected to the indoor unit within the same group. 3. When the total number of indoor units exceeds 26 units Including that above Type 200, a transmission booster is required. 4. In the case when start/stop input (CN32, CN51, CN41) is used by indoor group operation, the “Automatic address set-up” can not be employed. Please refer to 1. (2) “ Manual address set-up.” 5. For the connection of LOSSNAY with more than 2 units in a single refrigerant system, refer to the following “Connection of 2 LOSSNAY units in refrigerant system.” Allowable length a. Indoor/outdoor transmission line Farthest length (1.25mm2 or more) ≤ 200m L2 + L3 + L4 L2 + L11 + L12 + L13 ≤ 200m b. Centralized control transmission line No connection is required. c. MA remote controller wiring Total length (0.3 ~ 1.25mm2) ≤ 200m m1 m2 + m3 ≤ 200m m4 + m5 ≤ 200m Note 1. For the connection to the terminal block of compact remote controller, employ wire with a diameter of 0.75 ~ 1.25mm2 - 21 - Wiring method • Address setting method a. Indoor/outdoor transmission line Apply jumper wiring connection between M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and that of indoor/outdoor transmission line terminal block (TB5) on each indoor unit (IC). (with non-polarity two wires) ❉ When the transmission line is long or noise sources are located near the unit, recommend to use shielded wire. Connection of shielded wire: For the earth of shielded wire, apply jumper wiring connection between the earth screw of OC and the S-terminal of IC terminal block (TB5). b. Centralized control transmission line Connection is not required. c. MA remote controller wiring Connect the 1, 2 terminals of MA remote controller wiring terminal block (TB15) on IC to the terminal block of MA remote controller (MA). (with non-polarity two wires) ❉ MA remote controller can be connected to A-type indoor unit or later. For 2-remote controller operation: To employ 2-remote controller operation, connect 1, 2 terminals of the terminal block (TB15) on IC to the terminal block of two MA remote controllers. ❉ Set the main/sub selector switch of one MA remote controller to the sub remote controller. (For the setting method, see the installation manual of MA remote controller.) For indoor group operation: For the group operation of IC, connect 1, 2 terminals of the terminal block (TB15) on all ICs within the same group, and connect 1, 2 terminals of the terminal block (TB15) on another IC to the terminals of MA remote controller. (with non-polarity two wires) ❉ To operate the indoor units with different function in the same group, refer to 1. (2). d. LOSSNAY connection Apply jumper wiring to connect M1, M2 terminals of the terminal block (TB5) on IC to the indoor/outdoor transmission terminal block (TB5) on LOSSNAY (LC). (with non-polarity two wires) ❉ Linked and registered automatically with all indoor units within a refrigerant system. ❉ Please refer to the 1. (2) “Manual address set-up,” when interlocking partial indoor units with Lossnay, using Lossnay alone without interlocking, interlocking indoor units and Lossnay for over 16 units within a refrigerant system, or connecting LOSSNAY for over 2 units in a refrigerant system. e. Switch setting Address setting is not required. Main unit 1 Address setting range Unit or controller Order IC Not required – LC Not required – Main unit MA Not required – Sub unit MA Sub unit Set with main/sub selector switch. Not required – Indoor unit Sub unit 2 LOSSNAY 3 MA remote controller 4 Outdoor unit 5 Sub unit Setting method IC Caution Factory setting • Refer to 1. (2) to operate indoor units with different function in the same group. 00 00 Main OC Hex. unit OS - 22 - 00 1. System using MA remote controller (2) In the case of single refrigerant system connecting 2 or more LOSSNAY units (Manual address set-up) Control wiring example Interlocking with ventilation L3 L2 L4 Group Group OC IC 51 01 02 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 05 TB5 M1M2 S A1 B2 A1 B2 MA MA L11 TB3 TB7 M1M2 S M1M2 LC IC L12 L13 Group IC IC LC 03 04 06 TB15 TB5 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 TB5 M1M2 S A1 B2 MA – Example to use shielded wire – Prohibited items 1. M-NET and MA remote controllers can not be connected together to the indoor unit within the same group. 2. MA remote controller of 3 units or more can not be connected to the indoor unit within the same group. 3. When the total number of indoor units exceeds 26 units including that above Type 200, a transmission booster is required. Allowable length a. Indoor/outdoor transmission line The same as 1. (1) b. Centralized control transmission line No connection is required. c. MA remote controller wiring The same as 1. (1) - 23 - Wiring method • Address setting method a. Indoor/outdoor transmission line The same as 1. (1) Connection of shielded wire: The same as 1. (1) b. Centralized control transmission line No connection is required. c. MA remote controller wiring The same as 1. (1) For 2-remote controller operation: The same as 1. (1) For indoor group operation: The same as 1. (1) d. LOSSNAY connection Apply jumper wiring to connect M1, M2 terminals of the terminal block (TB5) on the indoor unit (IC) to the terminal block (TB5) on Lossnay (LC). (with non-polarity two wires) ❉ The interlocking registration of the indoor unit and Lossnay from the remote controller is required. (For the registration method, see the installation manual of remote controllers.) e. Switch setting Address setting is required as listed below. Order Address setting range Unit or controller • Set the lowest address within a same group to the indoor unit desired to be the main unit. Main unit 1 Indoor unit IC 01 ~ 50 Set to the main unit address within a same group in serial order. [Main unit +1, +2, +3, .... ] Sub unit 2 LOSSNAY 3 MA remote controller 4 LC 01 ~ 50 Main unit MA Not required Sub unit MA Not required Outdoor unit OC 51 ~ 100 5 Sub unit Hex. unit Setting method OS Set any address after setting all indoor units. Caution • When operating indoor units with different function within a same group, assign the indoor unit with the most plenty of function to the main unit. • Set the address not to be overlapped with the indoor unit address. Factory setting 00 00 – Main Set with main/sub selector switch. The lowest address of indoor unit within refrigerant system + 50 Oundoor unit address + 1 - 24 - • When setting address to “100,” make it “50.” 00 1. System using MA remote controller (3) In the case of different refrigerant grouping operation Control wiring example Interlocking with ventilation L2 CN41→CN40 Replace L3 Group L4 Group OC 51 IC LC 01 03 06 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 TB5 M1M2 S m2 TB3 TB7 M1M2 S M1M2 IC Connect A1 B2 MA MA m3 A1 B2 L31 NO Leave CN41 as it is. L22 L23 Group OC 52 TB3 TB7 M1M2 S M1M2 L24 IC IC IC 02 04 05 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 NO A1 B2 MA – Example to use shielded wire – Prohibited items 1. M-NET and MA remote controllers can not be connected together to the indoor unit within the same group. 2. MA remote controller of 3 units or more can not be connected to the indoor unit within the same group. 3. Do not connect together the terminal blocks (TB5) of the indoor unit connected to different outdoor units. 4. Replacement of the power supply selecting connector (CN41) on the outdoor unit should be done only on one outdoor unit. 5. Grounding of S-terminal of the centralized control terminal block (TB7) on outdoor unit should be done only on one outdoor unit. 6. When the total number of indoor units exceeds 26 units including that above Type 200, a transmission booster is required. Allowable length a. Indoor/outdoor transmission line Farthest length (1.25mm2 or more) ≤ 200m L2 + L3 + L4 L22 + L23 + L24 ≤ 200m b. Centralized control transmission line Farthest length via outdoor unit (1.25mm2 or more) L2 + L3 + L4 + L31 + L22 + L23 + L24 ≤ 500m c. MA remote controller wiring The same as 1. (1) - 25 - Wiring method • Address setting method a. Indoor/outdoor transmission line Apply jumper wiring connection between M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and that of indoor/outdoor transmission line terminal block (TB5) on each indoor unit (IC). (with non-polarity two wires) ❉ Make sure to use shielded wire. Connecting of shielded wire: The same as 1. (1) b. Centralized control transmission line Apply jumper wiring between M1, M2 terminals of centralized control transmission line terminal blocks (TB7) on each OC. For one OC only, replace the power selecting connector (CN41) with (CN40). ❉ Make sure to use shielded wire. Connecting of shielded wire: Apply jumper wiring to connect the shielded earth to S-terminal of the terminal block (TB7) on each OC. Connect Sterminal of the terminal block (TB7) on the one OC with (CN40) replaced to the earth screw ( ) of the electrical parts box. c. MA remote controller wiring The same as 1. (1) For 2-remote controller operation: The same as 1. (1) For indoor unit group operation: The same as 1. (2) d. LOSSNAY connection The same as 1. (2) e. Switch setting Address setting is required as follows. Address setting range Unit or controller Order Indoor unit IC 01 ~ 50 Set to the main unit address within a same group in serial order. [Main unit +1, +2, +3, .... ] LC 01 ~ 50 Set any address after setting all indoor units. Main unit MA Not required Sub unit MA Sub unit Sub unit 2 LOSSNAY 3 MA remote controller 4 Outdoor unit OC 51 ~ 100 5 Sub unit Hex. unit Caution Factory setting • Set the lowest address within a same group to the indoor unit desired to be the main unit. Main unit 1 Setting method OS 00 • Set the address not to be overlapped with the indoor unit address. 00 – Main Set by the main/sub selector switch. The lowest address of indoor unit within refrigerant system + 50 Oundoor unit address + 1 - 26 - • When setting address to “100,” make it “50.” 00 1. System using MA remote controller (4) In the case of connecting system controller to centralized control transmission line Control wiring example Interlocking with ventilation CN41→CN40 Replace SW2-1 OFF→ON L2 L3 Note 1 Group L4 Group OC IC 51 01 02 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 05 A1 B2 A1 B2 MA MA TB5 M1M2 S L31 TB3 TB7 M1M2 S M1M2 LC IC NO Leave CN41 as it is. SW2-1 OFF→ON Note 1 L22 OC L23 L24 Group IC 53 TB3 TB7 M1M2 S M1M2 IC 03 04 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 LC 06 TB5 M1M2 S NO L32 A1 B2 MA Note 2 System controller A B S Notes: 1. Leave SW2-1 as “OFF” when connecting LM adapter only. 2. LM adapter requires the power source of 1-phase AC 230V. – Example to use shielded wire – Prohibited items 1. M-NET and MA remote controllers can not be connected together to the indoor unit within the same group. 2. MA remote controller of 3 units or more can not be connected to the indoor unit within the same group. 3. Do not connect together the terminal blocks (TB5) of the indoor unit connected to different outdoor units. 4. Replacement of the power supply selecting connector (CN41) on the outdoor unit should be done only on one outdoor unit. 5. Grounding work is required for S-terminal of the centralized control transmission block (TB7) on one outdoor unit only. 6. When the total number of indoor units exceeds 26 units Including that above Type 200, a transmission booster is required. Allowable length a. Indoor/outdoor transmission line The same as 1. (3) b. Centralized control transmission line Farthest length via outdoor unit (1.25mm2 or more) ≤ 500m L32 + L31 + L2 + L3 + L4 ≤ 500m L32 + L22 + L23 + L24 L2 + L3 + L4 + L31 + L22 + L23 + L24 ≤ 500m c. MA remote controller wiring The same as 1. (1) - 27 - Wiring method • Address setting method a. Indoor/outdoor transmission line The same as 1. (3) Connection of shielded wire: The same as 1. (1) b. Centralized control transmission line Apply jumper wiring between M1, M2 terminals of centralized control transmission line terminal blocks (TB7) on each OC. On one OC only, replace the power selecting connector (CN41) with (CN40). Set the centralized control switch (SW2-1) on the main board of all outdoor units to “ON.” ❉ Make sure to use shielded wire. Connection of shielded wire: Apply jumper wiring to connect the shielded earth to S-terminal of the terminal block (TB7) on each OC. Connect Sterminal of the terminal block (TB7) on one OC with (CN40) connected to the earth screw ( ) of the electrical parts box. c. MA remote controller wiring The same as 1. (1) For 2-remote controller operation: The same as 1. (1) For indoor group operation: The same as 1. (1) d. LOSSNAY connection Apply jumper wiring to connect M1, M2 terminals of the terminal block (TB5) on (IC) to the terminal block (TB5) on the indoor/outdoor transmission line terminal block (TB5) on Lossnay (LC). (with non-polarity two wires) ❉ The interlocking registration of the indoor unit and LOSSNAY from the system controller is required. (For the registration method, see the installation manual of the system remote controllers.) When connecting ON/OFF remote controller and LM adaptor only, the interlocking registration from the remote controller is required. e. Switch setting Address setting is required as listed below. Order Address setting range Unit or controller Indoor unit IC 01 ~ 50 LC 01 ~ 50 Main unit MA Not required Sub unit MA Sub unit Set by the main/sub selector switch. 51 ~ 100 The lowest address of indoor unit within refrigerant system + 50 Sub unit 2 LOSSNAY 3 MA remote controller 4 Outdoor unit 5 Sub unit OC Hex. unit Caution Factory setting • Set the lowest address within a same group to the indoor unit desired to be the main unit. Main unit 1 Setting method OS Set to the main unit address within a same group in serial order. [Main unit +1, +2, +3, .... ] Set any address after setting all indoor units. – Oundoor unit address + 1 - 28 - 00 • Set the address not to be overlapped with the indoor unit address. 00 • Conduct initial setting by the system controller with the same setting detail of indoor unit applied in MA remote controller wiring. Main • When setting address to “100,” make it “50.” 00 1. System using MA remote controller (5) In the case of connecting system controller to indoor/outdoor transmission line (excluding LM adaptor) Control wiring example Interlocking with ventilation CN41→CN40 Replace SW2-1 OFF→ON L2 L3 L4 Group Group OC IC 51 TB3 TB7 M1M2 S M1M2 LC IC 01 02 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 05 TB5 M1M2 S Connect A1 B2 MA MA L31 A1 B2 NO L22 Leave CN41 as it is. SW2-1 OFF→ON L23 L24 Group OC IC 53 TB3 TB7 M1M2 S M1M2 IC 03 04 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 LC 06 TB5 M1M2 S L25 NO Note 1 System controller A1 B2 A B S MA Note 1. LM adaptor may not be connected to indoor/outdoor transmission line. Prohibited items 1. M-NET and MA remote controllers can not be connected together to the indoor unit within the same group. 2. MA remote controller of 3 units or more can not be connected to the indoor unit within the same group. 3. Do not connect together the terminal blocks (TB5) of the indoor unit connected to different outdoor units. 4. Replacement of the power supply selecting connector (CN41) on the outdoor unit should be done only on one outdoor unit. 5. Grounding work is required for S-terminal of the centralized control transmission block (TB7) on one outdoor unit only. 6. The system controller connectable to the indoor/outdoor transmission line counts for 3 sets maximum. While G-50 counts for only 1 set 7. When the total number of indoor units exceeds 26 sets, the system controller may not be connected to the indoor/outdoor transmission line. 8. When the total number indoor units exceed 18 sets and they includes Type 200 or above, the system controller may not – Example to use shielded wire – Allowable length a. Indoor/outdoor transmission line Farthest length (1.25mm2 or more) ≤ 200m L2 + L3 + L4 L22 + L23 + L24 ≤ 200m ≤ 200m L25 b. Centralized control transmission line Farthest length via outdoor unit (1.25mm2 or more) ≤ 500m L25 + L31 + L2 + L3 + L4 L2 + L3 + L4 + L31 + L22 + L23 + L24 ≤ 500m c. MA remote controller wiring The same as 1. (1) be connected to the indoor/outdoor transmission line. - 29 - Wiring method • Address setting method a. Indoor/outdoor transmission line Apply jumper wiring connection between M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and that of indoor/outdoor transmission line terminal block (TB5) on each indoor unit (IC). (with non-polarity two wires) ❉ Make sure to use shielded wire. Connection of shielded wire: For the grounding of shielded wire, apply jumper wiring between the grounding screw of OC, S-terminal of the terminal block (TB3), and S-terminal of the system controller. b. Centralized control transmission line Apply jumper wiring between M1, M2 terminals of centralized control transmission line terminal blocks (TB7) on each OC. On one OC only, replace the power selecting connector (CN41) with (CN40). Set the centralized control switch (SW2-1) on the main board of all outdoor units to “ON.” ❉ Make sure to use shielded wire. Connection of shielded wire: Apply jumper wiring to connect the shielded earth to S-terminal of the terminal block (TB7) on each OC. Connect Sterminal of the terminal block (TB7) on one OC with (CN40) connected to the earth screw ( ) of the electrical parts box. c. MA remote controller wiring The same as 1. (1) For 2-remote controller operation: The same as 1. (1) For indoor unit group operation: The same as 1. (2) d. LOSSNAY connection Apply jumper wiring to connect A, B terminals of the terminal block (TB5) on (IC) to the terminal block (TB5) on the indoor/outdoor transmission line terminal block (TB5) on Lossnay (LC). (with non-polarity two wires) ❉ The interlocking registration of the indoor unit and Lossnay is required from the system controller. (For the registration method, see the instruction manual of system controller.) To connect ON/OFF remote controller only, interlocking registration from the remote controller is required. e. Switch setting Address setting is required as follows. Address setting range Unit or controller Order Indoor unit IC 01 ~ 50 LOSSNAY 3 MA remote controller 4 5 Sub unit 00 Set any address after setting all indoor units. LC 01 ~ 50 Main unit MA Not required Sub unit MA Sub unit Set by the main/sub selector switch. 51 ~ 100 The lowest address of indoor unit within refrigerant system + 50 Outdoor unit OC Hex. unit Factory setting Set to the main unit address within a same group in serial order. [Main unit +1, +2, +3,] Sub unit 2 Caution • Set the lowest address within a same group to the indoor unit desired to be the main unit. Main unit 1 Setting method OS – Oundoor unit address + 1 - 30 - • Set the address not to be overlapped with the indoor unit address. 00 • Conduct initial setting by the system controller with the same setting detail of indoor unit applied in MA remote controller wiring. Main • When setting address to “100,” make it “50.” 00 2. System Using the M-NET Remote Controller (1) System with the system controller connected to the transmission lines for centralized control Control wiring example Interlocking with ventilation CN41→CN40 Replace SW2-1 OFF→ON L2 Note 1 L3 L4 Group Group OC IC 51 TB3 TB7 M1M2 S M1M2 LC IC 01 02 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 05 TB5 M1M2 S Connect A1 B2 101 102 RC RC L31 A1 B2 NO Leave CN41 as it is. SW2-1 OFF→ON L23 L22 Note 1 L24 Group OC IC 53 TB3 TB7 M1M2 S M1M2 IC 03 04 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 LC 06 TB5 M1M2 S L32 NO Note 2 System controller A B S A1 B2 103 RC – Example to use shielded wire – Note 1: If only the LM adaptor is connected, leave SW2-1 to OFF. Note 2: LM adaptor requires single phase AC 230 V. Prohibited items 1. A group of indoor units cannot be connected to both M-NET remote controller and MA remote controllers. 2. No more than 2 M-NET remote controllers can be connected to a group of indoor units. 3. Do not connect the TB5’ s (Terminal block) of the indoor units that are connected to different outdoor units. 4. Replace CN41 (power supply switch connector on outdoor units) on only one of the outdoor units. 5. Ground the S terminal of TB7 on only one of the outdoor units. 6. Transmission line booster is necessary when the total number of connected indoor units exceeds 20 (19 with 1 BC and 18 with 1 BC and BS each). 7. Transmission line booster is necessary if the system includes indoor units of 200 or higher and the total number of indoor units exceeds 16 (15 with 1 BC and 14 with 1 BC and BS each). Allowable length a. Indoor/outdoor transmission line The same as 1. (3) b. Centralized control transmission line The same as 1. (4) c. M-NET remote controller wiring The same as 2. (1) - 31 - Wiring method • Address setting method a. Indoor/outdoor transmission line The same as 1. (3) Connection of shielded wire: The same as 1. (1) b. Centralized control transmission line The same as 1. (4) Connection of shielded wire: The same as 1. (4) c. M-NET remote controller wiring M-NET remote controller wiring Connect each of the M1 and M2 terminals of TB5 (indoor/outdoor transmission line terminal block) on the IC to the terminals on the M-NET remote controller. For 2-remote controller operation: For a 2-remote-controller operation, connect each of the terminals M1 and M2 of the IC terminal block to the two RC terminal blocks respectively. For indoor unit group operation: Indoor unit group operation To operate IC’s as a group, connect the M1, M2 terminals of the terminal block on the main IC in the group with the RC terminal block (with non-polar two wires) ❉M-NET remote controller can be connected at any point on the indoor/outdoor transmission line. ❉To run a group operation of indoor units that have different functions, select the unit with the greatest number of functions as the main unit. d. LOSSNAY connection The same as 1. (4) e. Switch setting Address setting is required as follows. Address setting range Unit or controller Order Indoor unit IC 01 ~ 50 LC 01 ~ 50 Main unit RC 101 ~ 150 The address of the main unit in the same group +100 Sub unit RC 151 ~ 200 The address of the main unit in the same group +150 • 100’s digit does not need to be set. • Set the address to “ 00 ” when setting it to “ 200 ”. The smallest indoor unit address in the same refrigerant system +50 • Set the address to “ 50 ” when setting it to “ 100 ”. Sub unit 2 LOSSNAY 3 M-NET remote controller 4 Outdoor unit 5 Sub unit Caution OC OS 00 Starting with the number main unit address +1, assign a sequential number to each of the rest of the indoor units. • The Lossnay address must not After all indoor units have received an address, use any remaining num- overlap with the indoor unit address. ber and assign it to the Lossnay unit. units. 00 101 00 51 ~ 100 Hex. unit Factory setting • Assign the smallest address within • Make the initial setting of the indoor unit group setting with the group to the indoor unit to bethe system controller come the main unit. (MELANS). Main unit 1 Setting method Oundoor unit address + 1 - 32 - 3. System where MA remote controller and M-NET remote controller coexist Control wiring example CN41→CN40 Replace SW2-1 OFF→ON L2 Note 1 L3 L4 Group Group OC IC 51 TB3 TB7 M1M2 S M1M2 IC IC 01 02 04 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 A1 B2 A1 B2 104 RC L31 MA Leave CN41 as it is. SW2-1 OFF→ON Note 1 NO L22 L23 L24 Group Group OC 53 TB3 TB7 M1M2 S M1M2 IC IC IC 03 05 06 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 TB5 TB15 M1M2 S 1 2 A1 B2 A1 B2 L32 105 MA Note 2 System controller A B S RC Notes: 1. Leave SW2-1 as “OFF” when connecting LM adapter only. 2. LM adapter requires the power source of 1-phase AC 230V. – Example to use shielded wire – Prohibited items 1. Make sure to connect the system controller. 2. M-NET and MA remote controllers can not be connected together to the indoor unit within a same group. 3. M-NET remote controller of 3 units or more can not be connected to the indoor unit within a same group. 4. MA remote controller of 3 units or more can not be connected to the indoor unit within a same group. 5. Do not connect together the terminal blocks (TB5) of the indoor unit connected to different outdoor units. 6. Replacement of the power supply selecting connector (CN41) on the outdoor unit should be done only on one outdoor unit. 7. Grounding work is required for S-terminal of the centralized control transmission block (TB7) on one outdoor unit only. 8. When the total number of indoor units exceeds 20 sets, transmission line booster is required. 9. When the total number of indoor units exceed 16 sets and they include Type 200 or above, the transmission line booster is required. Allowable length a. Indoor/outdoor transmission line The same as 1. (3) b. Centralized control transmission line The same as 1. (4) c-1. MA remote controller wiring The same as 1. (1) c-2. M-net remote controller wiring The same as 2. (1) - 33 - Wiring method • Address setting method a. Indoor/outdoor transmission line The same as 1. (3) Connection of shielded wire: The same as 1. (1) b. Centralized control transmission line The same as 1. (4) Connection of shielded wire: The same as 1. (4) c-1. MA remote controller wiring, For 2-remote controller operation: , For indoor unit group operation: The same as 1. (1) c-2. M-NET remote controller, For 2-remote controller operation: , For indoor unit group operation: The same as 2. (1) d. Lossnay connection The same as 1. (4) e. Switch setting Address setting is required as follows. Order Address setting range Unit or controller Main unit Indoor unit 1 Operation with MA remote controller IC 01 ~ 50 MA Not required Sub unit Main MA unit remote controller Sub unit MA 2 Operation with M-NET remote ontroller IC 01 ~ 50 • Set the lowest address within • Set lower address than that of a same group to the indoor unit the indoor unit connected to M-NET remote controller. desired to be the main unit. • Initially set the same setting detail as that of indoor unit Set to the main unit address group executed in the wiring within a same group in serial or- of MA remote controller with der. [Main unit +1, +2, +3,] system controller. RC RC 3 Lossnay LC 4 Outdoor unit OC 5 Sub unit 00 – Main • After setting the address of the • Initially set the same setting indoor unit to be operated with detail as that of indoor unit MA controller, set the lowest group with system controller. address among the same group to the indoor unit desired to be the main unit. 00 Main unit address inside a same • 100 digits are not required to set. group + 100 • When setting the address as Main unit address inside a same “200,” make it “00.” 151 ~ 200 group + 150 101 After setting all indoor units, set • Set so that not duplicating with the indoor unit addresses. any address. 00 101 ~ 150 01 ~ 50 The lowest address of indoor unit within refrigerant system + 50 51 ~ 100 Hex. unit Factory setting Set to the main unit address within a same group in serial order. [Main unit +1, +2, +3,] Sub unit Main M-NET unit remote controller Sub unit Caution Sub remote Set by using the main/sub secontroller lector switch Main unit Indoor unit Setting method OS • When setting address to “100,” make it “50.” 00 Oundoor unit address + 1 - 34 - [4] Restrictions on Refrigerant Piping Length For the piping connection, the end branching system is applied where the end of refrigerant piping from the outdoor unit is branched and connected to each indoor unit. As the piping connection method, the indoor unit is applied with flare connection, outdoor unit gas piping is flange connection, and liquid piping is flare connection. For the branching, brazed connection is applied. Warning Be careful not to leak refrigerant gas (R410A) near a fire. Refrigerant gas if touched a fire of gas oven and the like will be decomposed to generate poisonous gas leading to gas-poisoning. Do not conduct welding work in a closed room. Run a gas leak test after completing refrigerant piping work. Warning Caution Do not use a refrigerant other than that indicated on the equipment at installation or movement. Do not use existing refrigerant piping. • The old refrigerant and refrigerator oil in the existing piping contains a large amount of chlorine which may cause the refrigerantor oil of the new unit to deteriorate. • Mixing of different refrigerant or air makes the refrigeration cycle abnormal causing breakage and the like. Caution Caution Use refrigerant piping phosphorus deoxidized copper. In addition, be sure that the inner and outer surface of the pipes are clean and free of hazardous sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminant. Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Store elbows and other joints in a plastic bag.) • If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result. • Contaminants on the inside of the refrigerant piping may cause the refrigerant residual oil to deteriorate. Caution Caution Do not use a charging cylinder. Use liquid refrigerant to fill the system. • Using a charging cylinder may cause the refrigerant to deteriorate. • If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change and performance may drop. 1. Line branching system Outdoor unit To downstream unit A Note: The total model names downstream in the table below represent that viewed from A-point in the above figure. A H L B h First branch a Indoor 1 C e D b c d Indoor 2 Indoor 3 Indoor 4 Indoor Item Piping section Total piping length Length Less than 300m A+B+C+D+e Less than 150m B+C+D+e Less than 40m Upper outdoor unit H Less than 50m Lower outdoor unit H’ Less than 40m h Less than 15m Farthest piping length (L) Indoor – Outdoor Allowable value A + B + C + D + a + b + c + d +e Farthest piping length after first branch ( ) Height difference 5 Indoor – Indoor - 35 - 2. Header branching system Outdoor unit Note: The branch piping can not be branched again after header branching. A L H First branch Cap a Indoor h 1 c b Indoor 2 e d Indoor 3 f Indoor Indoor 4 5 Indoor Item Piping section Allowable value A+a+b+c+d+e+f Less than 300m A+f Less than 150m f Less than 40m Upper outdoor unit H Less than 50m Lower outdoor unit H’ Less than 40m h Less than 15m Total piping length Length Farthest piping length (L) Farthest piping length after first branch ( Height difference Indoor – Outdoor 6 ) Indoor – Indoor 3. Mixed line and header branching system Outdoor unit To downstream unit A Note: The total model names downstream in the table below represent that viewed from A-point in the above figure. A Branch header C First branch (Branch joint) d e Indoor 3 Indoor 4 L Indoor 5 Note: The branch piping can not be branched again after header branching. h H B Cap c b Branch joint a Indoor 2 Indoor 1 Item Piping section Allowable value A+B+C+a+b+c+d+e Less than 300m A+B+b Less than 150m B+b Less than 40m Upper outdoor unit H Less than 50m Lower outdoor unit H’ Less than 40m h Less than 15m Total piping length Length Farthest piping length (L) Farthest piping length after first branch ( Height difference Indoor – Outdoor ) Indoor – Indoor - 36 - £ Components of the Outdoor Unit [1] Appearance of the Components and Refrigerant Circuit < P200, P250, P300, P350-Types > [ Front view of the unit ] Fan guard Heat exchanger [ Rear view of the unit ] Fan guard Heat exchanger - 37 - < P200, P250, P300, P350-Types > [ Front view of the refrigerant circuit ] High-pressure check joint High-pressure pressure sensor Pressure switch Discharge muffler 4-way valve (21S4a) Accumulator Inverter compressor Drier Low-pressure check joint Gas-side ball valve Liquid-side ball valve [ Rear view of the refrigerant circuit ] Linear expansion valve (LEV1) 4-way valve (21S4b) Accumulator Sub cool coil Oil separator Low-pressure pressure sensor - 38 - 2-way valve (SV5b) < P400-type > Fan guard [ Front view of the unit ] Heat exchanger [ Rear view of the unit ] Fan guard Heat exchanger - 39 - < P400-type > [ Front view of the refrigerant circuit ] High-pressure pressure sensor High-pressure check joint 4-way valve (21S4b) 4-way valve (21S4c) Low-pressure pressure sensor Discharge muffler Pressure switch 4-way valve (21S4a) Accumulator Inverter compressor Drier Gas-side ball valve Liquid-side ball valve Low-pressure check joint [ Rear view of the refrigerant circuit ] Accumulator Sub cool coil Oil separator Linear expansion valve (LEV1) 2-way valve (SV5c ) 2-way valve (SV5b) - 40 - < P450, P500, P550, P600, P650-Types > [ Front view of the unit ] Fan guard Heat exchanger [ Rear view of the unit ] Fan guard Heat exchanger - 41 - < P450, P500, P550, P600, P650-Types > [ Front view of the refrigerant circuit ] Oil separator (No.1) Oil separator (No.2) Pressure switch Accumulator Inverter compressor (No.1) Oil balancer tube Commercial power supply compressor (No.2) [ Rear view of the refrigerant circuit ] (Rear) (Front) Drier High-pressure check joint High-pressure pressure sensor Low-pressure check joint Low-pressure pressure sensor 4-way valve (21S4a) 4-way valve (21S4b) 4-way valve (21S4c) Linear expansion valve (LEV1) Gas-side ball valve Liquid-side ball valve - 42 - Oil tank 4-way valve (21S4b) 4-way valve (21S4c) [2] Control Box < P200~P400-Types > [ Appearance ] Main board INV board Transmission line terminal block for centralized control (TB7) Choke coil (L1, L2) Transformer Power supply terminal block (TB1) Indoor/outdoor transmission terminal block (TB3) [ Under the circuit board cover ] ACCT-U phase ACCT-W phase DCL (back) DCCT (P250-P400 types only) Smoothing capacitor (C11, C12) Gate amp board (G/A board) Electromagnetic relay (52C1) Diode stack (DS1) Rush current protection resistor (R11, R12) FAN board Noise filter - 43 - < P450~P650-Types > [ Appearance ] RELAY board INV board Main board Transmission line terminal block for centralized control (TB7) FILTER board Choke coil (L1, L2) Transformer Power supply terminal block (TB1) Indoor/outdoor transmission terminal block (TB3) [ Under the circuit board cover ] Gate amp board (G/A board) DCL (back) Smoothing capacitor (C11, C12) Electromagnetic contactor (52C2) Overcurrent relay (51C2) Rush current protection resistor (R11, R12) Fuse AC660V 50A Electromagnetic contactor (52C1) Electromagnetic contactor (52F) Noise filter Diode stack (DS) FAN board - 44 - [3] Circuit Board 1. Main board LD2 CNRS3B CNRS3A CNS1 CNS2 CN40 CN38 CN41 CNVCC1 Controlled source input 1 – 2 DC30V 1 – 3 DC30V 4 – 5 DC7V 4 – 6 DC12V 7 – 8 DC7V CNRT1 CN52C Control for 52C1 CN51 3–4 Compressor ON/OFF 3–5 Trouble CN3N CN3D CN3S CNOUT1 CNAC3 Power output 3 L1 1 L2 CNLVB CN20 Power intput 5 L1 CN21 Power intput 3 L2 1N LD1 Service LED SW5 SW4 SW3 SW2 SWU2 - 45 - SW1 SWU1 2. INV board CNVDC F02 CN15V2 Power supply for IPM control SW1 CNVCC1 Power supply 1 – 2 DC30V 1 – 3 DC30V 4 – 5 DC7V 4 – 6 DC12V 7 – 8 DC7V SW2 CN52C CNDR2 CNAC2 Power Source 5 L2 3N 1G CNCT CNTH CNFAN CNRS1 CNRS2 Serial transmission for MAIN board - 46 - CNCT2 3. FAN board CNINV Fan motor output CNVDC DC bus voltage input Fuse CNRS2 1–3 LED1 LED2 SW2 IPM (back) CNTR 4. Relay board CNRT2 1 – 5 52C2, 52F, CH12 Power input (AC220~240V) CN51C2 51C2 contact input CNOUT2 Relay driving input 1 – 3 51C2 Detection output CN52C2 52C2 drivingoutput 1 – 5 AC220~240V CN52F 52F driving output 1 – 3 AC220~240V CNCH CH12 Power output 1 – 3 AC220~240V - 47 - 5. Filter board CNFG CNOUT Controlled source output CNL1 CNIN Controlled source input CNL2 6. G/A board CNDC1 CNDC2 CN15V1 CNIPM1 CNDR1 - 48 - ¢ Remote Controller [1] Functions and Specifications of MA and ME Remote Controllers There are two types of remote controllers: M-NET (ME) remote controller, which is connected on the indoor/outdoor transmission line, and MA remote controller, which is connected to each indoor unit. 1. Comparison of Functions and Specifications of MA and ME Remote Controllers Function/specification Remote controller address setting MA remote controller (Notes 1, 4) Not required M-NET(ME)Remote Controller (Notes 2, 4) Required Indoor/outdoor unit address Not required (applicable only in the case setting of single refrigerant systems)(Note 3) Required Wiring method Non-polar 2 wires ✻ Daisy-chain the indoor units with non-polar 2 wires when running a group operation. Non-polar 2 wires Installation location of remote controller Connectable to any indoor unit in the group Connectible at any point on the indoor/outdoor transmission line Interlocking with the ventilation unit Each indoor unit can individually be interlocked with a ventilation unit. (Registered on the remote controller in the same group) Each indoor unit can individually be interlocked with a ventilation unit. (Registered on the remote controller) Making group changes MA remote controller wires between indoor units require rewiring. Indoor unit and remote controller addresses must be changed, or the registration information must be changed using MELANS. (Note 1) (Note 2) (Note 3) (Note 4) MA remote controller includes MA remote controllers, MA compact remote controllers, and wireless remote controllers. M-NET remote controller includes ME remote controllers and compact remote controllers. Depending on the system configuration, even a single refrigerant system may require an address setting. Either an MA remote controller or an M-NET remote controller can be connected to a group of multiple-refrigerant systems or when a system controller is connected. 2. Selecting the Best Type of Remote Controller Select either the MA remote controller or the M-NET remote controller to take full advantage of a given system. The following information is provided as a reference for selection. MA remote controller (Notes 1, 2) M-NET (ME) remote controller (Notes 1, 2) • Low chances of system expansion and grouping changes are expected. • Grouping (floor plan) has been decided at the time of installation. • High chances of centralized installation of remote controllers, system expansion, and grouping changes. • Grouping (floor plan) has not been decided at the time of installation. • Direct connection of the remote controller to the Lossnay inside the heater-humidifier. (Note 1) M-NET remote controllers and MA remote controllers cannot both be connected to the same group of indoor units. (Note 2) A system controller must be connected to a system that has both MA remote controllers and M-NET remote controllers. < A system using an MA remote controller > Outdoor unit Group MA remote controller < System using an M-NET remote controller > M-NET transmission line (indoor/outdoor transmission line) Outdoor unit Group M-NET transmission line (indoor/outdoor transmission line) Group Indoor unit M-NET remote controller - 49 - Group Indoor unit [2] Group Setting and Interlocking Settings that are Made on the ME Remote Controller 1. Group setting/interlocking setting This operation should be performed to set a group of indoor units between different refrigerant systems and to manually raise the indoor/outdoor unit addresses. (A) Group setting ........... To register the indoor units you want to control with the remote controller, confirm the registered units, or delete registered units. (B) Interlock setting ........ To register the LOSSNAY to be interlocked with indoor units, confirm the registered units, or delete registered units. TEMP. C G E [Setting Procedure] (1) Address registration Register the indoor unit address you want to control with the remote controller. 1 Display “H0”, which flashes when the power is on, or OFF using the [ON/OFF] button. The liquid crystal displays are shown below. If any of these displays is different, the next set cannot be performed. [“H0 ” flashing display] ON/OFF FILTER CLOCK ON OFF F A CHECK TEST PAR-F27MEA H TIMER SET D B [OFF display] (A) Group registration 2 Displaying “GROUP REGISTRATION”. - Press and hold down the A [FILTER] and B [Louver ( )] buttons at the same time for two seconds. The display shown below appears. (B) Interlock registration 6 Displaying “INTERLOCK REGISTRATION” - Press the G [Mode selection ( )] button. The display shown below appears. If the button is pressed again, the display returns to 2 “ GROUP REGISTRATION ”. “ INDOOR UNIT ADDRESS ” and “ INTERLOCKED UNIT ADDRESS ” are displayed at the same time “ INDOOR UNIT ADDRESS ” “ INDOOR UNIT ADDRESS ” “ INTERLOCKED UNIT ADDRESS ” To confirm the addresses, go to “ (2) Registered address confirmation”. 7 Displaying address No. of LOSSNAY and any indoor unit address No. you want to interlock. - Press the C [TEMP. ( ) and ( )] buttons. “ INDOOR UNIT ADDRESS NO.” decreases and increases. Set it to the indoor unit address No. you want to interlock. - Press the H [Time selection ( ) and ( )] buttons. “ INTERLOCKED UNIT ADDRESS NO.” decreases and increases. Set it to the LOSSNAY address No. you want to interlock. 3 Set the unit address No. - Press the c [TEMP. ( ) and ( )] buttons. The unit address No. decreases and increases. Set it to the indoor unit address No. you want to register. 4 Register the indoor unit address No. you have set. - Press the D [TEST] button to register the indoor unit address No. being displayed. - When registration is completed normally, the unit type is displayed as shown below. - If the specified indoor unit does not exist, an error message will be displayed. Make sure there are indoor units and repeat the operation above. <When registration completed normally> 8 Register to interlock LOSSNAY with indoor unit. - Press the D [TEST] button. The display shown below appears, and the indoor unit being displayed at “ INDOOR UNIT ADDRESS ” and the LOSSNAY being displayed at “INTERLOCKED UNIT ADDRESS are interlocked. - The above can also be registered similarly by displaying the LOSSNAY address at “ INDOOR UNIT ADDRESS ” and the indoor unit address at “ INTERLOCKED UNIT ADDRESS ”. Displays the unit type. (Indoor unit in this case.) <If an error message appears> “ ” will flash as a registration error. (If the registered indoor unit does not exist) (Alternate display) 5 To register multiple indoor units, repeat steps 3 and 4. If registration is completed normally, the display alternates as shown in the figure at the left. If a registration error occurs, ” will flash. (Indicates that the “ unit does not exist.) To confirm the addresses, go to “ (2) Registered address confirmation”. NOTE: · Interlock all the units in a group with the LOSSNAY. If not interlocked, the LOSSNAY will not operate. · If an SC is connected, make an interlocking setting with the SC. - 50 - 9 Repeat steps 7 and 8 above to interlock all the indoor units in a group with the LOSSNAY. (C) Returning to the normal state When all the group registration and interlock registration operations are completed, return to the normal state as described below. 0 Press and hold down the A [FILTER] and B [Louver ( )] buttons at the same time for two seconds. The remote controller returns to the state of 1. To return to the normal state, go to step 0. To confirm the addresses, go to “ (2) Registered address confirmation ”. (2) Registered address confirmation Display the indoor unit address No. registered in the remote controller by performing steps 1 and 2. (A) Group registration information confirmation A Displaying “GROUP REGISTRATION” - Each time you press the E [Timer selection ( )] button, the registered indoor unit address No. and unit type are displayed. <Registered> (B) Interlocked registration information confirmation After performing step 6, proceed as follows: B Display the indoor unit address No. you want to confirm. - Press the H [Time selection ( ) and ( )] buttons. The interlocked unit address decreases and increases. Set it to the indoor unit address No. you want to confirm. Indicates the unit type. (Indoor unit in this case.) The above can also be confirmed similarly by displaying the LOSSNAY address at the interlocked unit address. <Not registered> C Displaying the LOSSNAY address No. interlocked at step B. - Press the E [Timer selection ( )] button. The interlocked LOSSNAY address No. and indoor unit address No. are alternately displayed. - When there is one registration, one address No. is displayed no matter how many times the button is pressed. - When there are multiple registrations (ex: “ 011” , “ 012 ”, “ 013 ”, the address Nos.) are displayed in 011 → 012 → 013 order each time the E [Timer selection ( )] button is pressed. Address of unit that is interlocked (Alternate display) D Displaying another registered unit address No. - After step C, press the E [Timer selection ( )] button again. Another registered unit address No. is displayed. (The display method is the same as step C.) To delete an address, go to “ (3) Address deletion” . Address of another registered unit (Alternate display) To return to the normal state, go to step 0. To delete an address, go to “(3) Address deletion ”. (3) Address deletion Group registration information deletion deletes the indoor units registered in the remote controller. Interlocked registration information deletion deletes the interlock between units. Both deletion operations perform the address confirmation processing of (2) and are performed in the state in which the unit you want to delete was displayed. E Deleting registered indoor unit or interlock between units. - Press the F [Time selection( CLOCK→ ON →OFF )] button two times in succession. The displayed indoor unit address or the interlock between units is deleted. When the information is deleted, the display shown below appears. - 51 - (A) Deleting group registration information (B) When deleting interlocked registration <When completed normally> “ ” is displayed at the room temperature display. When deletion was completed normally, “ ” is displayed at the unit type display. If a deletion error occurred, “ ” is displayed at the unit type display. In this case, repeat the operations described above. (Alternate display) - If there is a transmission error, registration is not deleted and the display shown below appears. In this case, repeat the operations above. <When an error occurs> “ ” is displayed at the room temperature display. To return to the normal state, go to step 0. (4) (A) Group registration and (B) Interlock registration of another group using an arbitrary remote controller (A) Group registration and (B) Interlock registration of another group can be performed using an arbitrary remote controller. For a description of the operation procedure, see “ (B) Interlock registration ” of section [2] 1. Group setting/interlocking setting. Set the address No. as shown below. (A) When performing group registration Interlocked unit address ... Remote controller address No. Indoor unit address ........... Indoor unit address No. you want to control with the remote controller (B) When performing interlock registration Interlocked unit address ... LOSSNAY address No. Indoor unit address ........... Indoor unit address No. which is interlocked with LOSSNAY 2. Remote controller functions selection In the remote controller function selection mode, three functions can be selected and changed. Select and change these functions, as required. For the operating instructions refer to “ (6) How to select the remote controller functions ” of 3 How to Operate in Instruction Book. (A) Operation mode display selection mode ( “AUTO ” mode heating/cooling display selection) When the“ AUTO ”mode was selected with the remote controller, the indoor unit is judged from the room temperature and heating or cooling is performed automatically. In this case, “ AUTO ” “ COOLING ” or “ AUTO” “ HEATING ” is displayed at the remote controller. However, only “ AUTO ” without “ COOLING ” or “ HEATING ” can also be displayed. (B) Room temperature display selection mode (Room temperature display/no display selection) Normally, the intake air temperature is displayed at the remote controller. However, no display can also be selected. (C) Set temperature range limit mode Ordinarily, the set temperature can be freely set over the 19˚C to 30˚C range for cooling and dry and the 17˚C to 28˚C range for heating. However , for cooling and dry, the lower limit temperature and for heating, the upper limit temperature can be limited to a preset temperature. If the set temperature range is made higher for cooling and dry and is set lower for heating by this method, excessive cooling and heating can be prevented and energy can be saved. CAUTION When the normal set temperature adjustment range was changed using a remote controller connected to a simultaneous cooling/heating air condition with an AUTO mode, the AUTO mode cannot be selected with the [Mode selection] button. [Remote controller function selection mode transition] OFF window → ON/OFF CLOCK ON OFF → 3 → TIMER SET 4 2 → Set temperature adjustment range limit mode (cool/dry) 3 2 → 1 2 Room temperature display selection mode CHECK TEST PAR-F27MEA 1 :Press and hold down the [CHECK] and [Mode selection] buttons at the same time for 2 seconds 2 :[TEMP. ( )] button 3 :[TEMP. ( )] button 3 FILTER → TEMP. 3 [Remote controller OFF window display] Operation mode display selection mode → 2 1 → 1 Remote controller function selection modes Set temperature adjustment range limit mode (heat) - 52 - 2 3 [PROCEDURE] 1. Set the air conditioner to the off state with the remote controller [ON/OFF] button. The remote controller display shifts to the OFF window display shown at the left. 2. When the [CHECK] and [Mode selection] buttons 1 are pressed and held down at the same time for two seconds, the remote controller switches to the remote controller function selection mode and the “OPERATION MODE DISPLAY SELECTION MODE” window appears. The other three modes can be selected by operating the [TEMP.] ( ) button 2 or ( ) button 3. Display the mode whose function you want to change. OPERATION MODE DISPLAY SELECTION MODE (When you want to change the AUTO mode display) • “AUTO” “COOL/HEAT” flashes and “ON” or “OFF” lights. Each time the [Time selection ( “OFF” display is switched. [Time selection ( ) (( ) or ( )] button 4 is pressed in this state, the “ON” and ))] button • When “ON” was selected, “AUTO” “COOL” or “AUTO” “HEAT” is displayed during AUTO mode operation. • When “OFF” was selected, only “AUTO” is displayed during AUTO mode operation. ROOM TEMPERATURE DISPLAY SELECTION MODE (When you want to change room temperature display/no display) • “88 °C” flashes at the room temperature display and “ON” or “OFF” lights. Each time the [Time selection ( state, the “ON” and “OFF” display is switched. ˚C )] button 4 is pressed in this ) or ( ˚C [Time selection ( ) (( ))] button • When “ON” was selected, the room temperature is continuously displayed in the ON window. • When “OFF” was selected, the room temperature is not displayed in the ON window. SET TEMPERATURE RANGE LIMIT MODE (When you want to change the set temperature adjustment range) 1) Cool/dry mode temperature selection “COOL/DRY” and “LIMIT TEMP.” light on the display and the set temperature adjustment range in the cool (dry) mode is displayed. The lower limit temperature of the set temperature display flashes. This temperature value can be set and changed. 30 °C (Upper limit temperature 30°C is fixed. Only the lower limit temperature [Lower limit temperature adjustment range]: 19 °C can be changed.) ˚C LIMIT TEMP. [When set temperature adjustment range in cool/dry mode is 19 °C to 30 °C] 2) Each time the [Time selection ( ) or ( set temperature adjustment range. ˚C )] button 4 is pressed, the lower limit temperature value is increased or decreased. Set it to the desired LIMIT TEMP. [When set temperature adjustment range was set to 24 °C to 30 °C] 3) When the [TEMP. ( )] button 2 is pressed after the setting above, the remote controller switches to the heat mode temperature selection window. “HEAT” and “LIMIT TEMP.” light on the display and the heat mode set temperature adjustment range is displayed. The upper limit temperature value can be changed by pressing the [Time selection ( ) or ( )] button 4, the same as cool/dry mode temperature selection. Upper limit temperature adjustment range: 17 °C to 28 °C (The lower limit temperature 17°C is fixed. Only the upper limit temperature can be changed.) 3. At the end of selection of each function, release the remote controller function selection mode and display the OFF window by pressing the [CHECK] and [Mode selection] buttons 1 at the same time for two seconds. [3] Interlocking Setting that is Made on the MA Remote Controller Lossnay interlocking setting Make this setting only when interlocked operation with LOSSNAY is necessary with CITY MULTI models.) (This setting cannot be made with Mr. SLIM air conditioners.) Perform this operation when you want to register the LOSSNAY, confirm the registered units, or delete the registered units controlled by the remote controller. The following uses indoor unit address 05 and LOSSNAY address 30 as an example to describe the setting procedure. [Setting Procedure] 1 Stop the air conditioner using the remote controller A [ON/OFF] button. If the OFF display shown below does not appear at this time, step 2 cannot be performed. D FUNCTION TEMP. A ON/OFF B FILTER CHECK TEST PAR-20MAA 2 Press and hold down the B [FILTER] and c [Louver] buttons at the same time for two seconds. The display shown below appears. The remote controller confirms the registered LOSSNAY addresses of the currently connected indoor units. TIMER SET G E FUNCTION - 53 - H C F 3 Registration confirmation result - The indoor unit address and registered LOSSNAY address are displayed alternately. FUNCTION FUNCTION <Indoor unit address and indoor unit display> <LOSSNAY address display and LOSSNAY display> - When LOSSNAY are not registered FUNCTION 4 If registration is unnecessary, end registration by pressing and holding down the B [FILTER] and c [Louver] buttons at the same time for two seconds. If a new LOSSNAY must be registered, go to step 1. Registration procedure. If you want to confirm another LOSSNAY, go to step 2. Confirmation procedure. To delete a registered LOSSNAY, go to step 3. Deletion procedure. < 1. Registration procedure > Set the address of the LOSSNAY and the indoor unit connected by the remote controller you want to register using the D [TEMP. ( buttons. (01 to 50) Set the address of the LOSSNAY you want to register using the E [TIMER SET ( ) and ( )] buttons. (01 to 50) ) and ( )] ) and ( ) FUNCTION Indoor unit address LOSSNAY address Press the F [TEST] button, and register the set indoor unit address and LOSSNAY address. - Registration end display The indoor unit address and “IC” and LOSSNAY address and “LC” are alternately displayed. FUNCTION FUNCTION - Registration error display If the address was not correctly registered, the indoor unit address and registered LOSSNAY address are alternately displayed. FUNCTION FUNCTION Cannot be registered because the registered indoor unit or LOSSNAY does not exist. Cannot be registered because another LOSSNAY was registered at the registered indoor unit. < 2. Confirmation procedure > Set the address of the indoor unit connected by the remote controller whose LOSSNAY you want to confirm using the D [TEMP.] ( buttons. (01 to 50) FUNCTION <Indoor unit address> Press the G [Timer selection] button and confirm the LOSSNAY address registered at the set indoor unit address. - Confirmation end display (When LOSSNAY is connected.) The indoor unit address and “IC” and registered LOSSNAY address and “LC” are alternately displayed. FUNCTION FUNCTION - Confirmation end display (When LOSSNAY is not connected.) Registered indoor unit address does not exist. FUNCTION FUNCTION < 3. Deletion procedure > Use this procedure when you want to delete registration of indoor units connected by the remote controller and LOSSNAY. 0 Confirm (see 2. Confirmation procedure) the LOSSNAY you want to delete and display the indoor units and LOSSNAY confirmation results. FUNCTION FUNCTION A Press the H [TIMER SET] button twice and delete registration of the LOSSNAY registered at the set indoor unit. - Deletion end display Indoor unit address and “– –” and registered LOSSNAY address and “– –” are alternately displayed. FUNCTION FUNCTION - Deletion error display When deletion was not performed properly. FUNCTION FUNCTION [4] Switching to the built-in Thermo on the remote controller 1. Selecting the position of temperature detection by the indoor unit (Factory setting: SW1-1 “OFF” ) To use the built-in sensor in the remote controller, set the SW1-1 on the indoor unit to ON. ✻ Some remote controllers are not equipped with a built-in sensor. Use the built-in sensor on the indoor unit instead. ✻ When using the built-in sensor on the remote controller, install the remote controller where room temperature can be detected. - 54 - - 55 - N PE 40A 60A PU(H)Y-P350YGM-A PUHY-P400YGM-A PU(H)Y-P200,P250,P300YGM-A 30A N L3 black L3 blue L2 white L2 M2 M1 TB3 M1 S M2 TB7 L1 Breakers for wiring Breakers for current leakage 50/60Hz 380/400/415V Power source 3N~ shield shield 21S 4b ✻4 SV 5b TB1 (Terminal Block) L1 red INDOOR/ OUTDOOR TRANSMISSION LINE CENTRAL CONTROL TRANSMISSION LINE CH11 21S 4a ✻5 21S 4c SV 5c SV1 63H1 52 C1 CN20 45 CN21 1 2 3 blue 123 X01 X02 X03 X06 X07 X08 X09 F01 250VAC 6.3A T detection circuit detection circuit detection circuit CNL black 3 2 1 21 LD1 ✻1 1 1 1 Unit address setting SWU2 SWU1 ~ + ~ ~ - 1 2 3 CNS2 blue black ZNR14 1 2 CNS1 blue C15 52C1 R11 R12 Refer to the service handbook about the switch operations. SWU3 10 10 10 10 SW5 SW4 SW3 SW2 SW1 2 1 0 10 1 3 2 1 R23 CNH CNTYP4 CNTYP5 3 2 1 R22 Control circuit board (MAIN BOARD) CN01 21 63HS 1 2 3 63LS 1 2 3 OFF ON OFF ON OFF ON OFF ON OFF ON 1 DS1 (Diode stack) red X11 CN02 8 7 6 5 4 3 2 1 CNTYP1 red 21 TH8 TH7 TH6 TH5 TH11 F02 250VAC 6.3A T ACNF1 (Noise Filter) red L1 white L2 black L3 blue N E 1 CN32 2 3 1 CN33 2 3 4 5 6 1 CN36 2 3 4 5 6 7 8 9 1 2 CN35 3 red 1 2 CN38 3 green 3 CN52C 1 yellow 2 X52 Inverter controller box Z20 red white black DCL1 CNLVB red 123456 LEV1 C12 C11 1 1 2 3 1 + + R14 R13 5 6 7 8 1 2 3 CNVCC1 4 1 2 3 CNRS3B 4 5 6 7 CNAC3 2 3 black 1 5 6 7 CNRS3A 4 12V CN51 CN3N 3 blue 2 CN3S 3 2 red 3 CN3D 2 1 5 4 3 2 1 DCCT1 1234 ✻3 black red C14 T01 (Transfomer) Trouble Compressor ON/OFF N P ✻1 or STEP DEMAND 4 3 2 1 ACCT-U IPM1 U 4 V 12 12 L2 CNL2 CNFG blue 1 2 3 4 14 1 1 1 CN15V2 CNDR2 SW1 ON 4 SW2 1 CNCT OFF 1 2 CNTH green THHS1 1 2 3 4 6 LED1 operation LED2 error F01 250VAC 2A T 1 12345 OFF ON Power circuit board 1 (INV BOARD) CNVCC1 12345678 CNAC2 F02 700VDC 2A T 1 2 3 CNDC2 4 black 9 14 12 4 3 CNCT2 2 blue 1 L1 9 1 1 2 3 4 5 6 7 8 CNL1 1 FILTER 2 3 BOARD 4 5 6 7 CNOUT CNIN blue 8 green CNDC1 black CNDR1 W white black ACCT-W SW2 red CNVDC ACCT1 123 1 6 5 4 3 2 1 Gate amp board 1 (G/A BOARD) CN15V1 CNDC2 1 2 CNTR 3 ON OFF LED1 operation LED2 error FAN control board (FAN BOARD) CNINV 1 2 3 4 5 CNRS2 6 7 ✻2 ) AUTO CHANGEOVER HEAT/COOL SNOW Compressor ON/OFF NIGHT MODE 2 1 CNFAN X01 red 3 CNFG 1 blue 2 CNRS1 1234567 MF3 2 3 2 3 U V W MF W MC1 U Motor (Compressor) V Fan motor (Heat exchanger) 1 CN04 1 Fan motor (Radiator panel) ✻4 ✻4 Earth terminal Function device Choke coil (Transmission) Low pressure sensor High pressure sensor High pressure switch Radiator panel temp. detect bypass outlet temp.detect at Sub-cool coil liquid outlet temp.detect at Sub-cool coil OA temp.detect Pipe temp.detect (Hex outlet) Discharge pipe temp. detect Electronic expansion valve (SC coil) Solenoid valve (Heat exchanger capacity control) Solenoid valve (Discharge-suction bypass) ✻5 4-way valve Appliance “✻3” and “✻4” do not exsist. All exists “✻2”,“✻3”,“✻4” and “✻5” do not exsist. OFF ON ON/OFF Compressor SHORT 75% 50% OPEN 100% 0% Auto changeover:OFF NOTE:The broken lines indicate field wiring. HEAT COOL CN3N 1-2P OPEN SHORT SHORT Auto changeover:ON OPEN CN3N 1-3P ✻2:Auto changeover (CN3N 1-2P,1-3P) OPEN SHORT CN3D 1-2P CN3D 1-3P OFF MODE NIGHT SHORT ON OPEN 1-2P CN3D SW4-7:ON (STEP DEMAND) SHORT OPEN 1-3P CN3D ✻1: Function according to switch operation. (SW4-7,CN3D 1-2P,and CN3D 1-3P) SW4-7:OFF (Compressor ON/OFF and NIGHT MODE) PUY-P250,P300,P350YGM-A “✻2”,“✻4” and “✻5” do not exsist. PUY-P200YGM-A PUHY-P400YGM-A PUHY-P250,P300,P350YGM-A “✻4” do not exsist. PUHY-P200YGM-A Model name < Difference of appliance > Z20 L1,L2 63LS 63HS 63H1 THHS1 TH8 TH7 TH6 TH5 TH11 LEV1 SV5c SV5b SV1 21S4c 21S4b 21S4a Crank case heater (Compressor) Magnetic contactor (Inverter main circuit) MF1 CH11 DC reactor (Power factor improvement) 52C1 ✻3 DC Current Sensor DCL1 DCCT1 Name AC Current Sensor Symbol ACCT1 Thermistor [1] red white black < Symbol explanation > ∞ Electrical Wiring Diagram PUHY-P200, P250, P300, P350, P400YGM-A / PUY-P200, P250, P300, P350YGM-A SV 5b PE PUHY-P550,P600,P650YGM-A 75A PUHY-P450,500YGM-A 60A N V U MC2 W 52 C1 white 1 CN32 2 3 1 CN33 2 3 4 5 6 1 2 CN34 3 red 4 5 6 1 CN36 2 3 4 5 6 7 8 9 1 2 CN35 3 red 1 2 CN38 3 green 3 CN21 1 2 3 blue 52C2 51C2 F11 AC660V 50A F detection circuit detection circuit F02 250VAC 6.3A T CN52C 1 yellow 2 X52 ACNF1 (Noise Filter) red L1 white L2 black L3 blue N E red Motor (Compressor) F12 AC660V 50A F blue L3 black L3 N L2 white L2 M1 M2 TB3 M1 S M2 TB7 L1 shield shield 21S 4b SV 5c SV1 3 2 1 3 2 TB1 (Terminal Block) L1 red Breakers for wiring Breakers for current leakage 50/60Hz 380/400/415V Power source 3N~ - 56 - INDOOR/ OUTDOOR TRANSMISSION LINE CENTRAL CONTROL TRANSMISSION LINE CH11 21S 4a SV3 21S 4c 63H2 63H1 1 black Inverter controller box 123 45 X01 X02 X03 X05 X06 X07 X08 X09 CN20 F01 250VAC 6.3A T 2 1 CN01 63HS CNL black 3 2 1 LD1 1 ✻1 1 1 1 Unit address setting SWU2 SWU1 ~ ~ - ~ + black red DS1 (Diode stack) 1 2 3 CNS2 blue ZNR14 1 2 CNS1 blue C15 R23 3 2 1 52C1 R11 R12 Refer to the service handbook about the switch operations. 2 1 0 SWU3 10 10 10 10 10 SW5 SW4 SW3 SW2 SW1 1 2 1 R22 CNH CNTYP4 CNTYP5 3 2 1 1 2 3 63LS 1 2 3 Control circuit board (MAIN BOARD) CN13 4 3 2 1 TH12 TH11 red white black red white black OFF ON OFF ON OFF ON OFF ON OFF ON CN02 detection circuit 8 7 6 5 4 3 2 1 2 1 TH8 TH7 TH6 TH5 CNTYP1 red Z20 DCL1 CNLVB red 123456 LEV1 C12 C11 + + R14 R13 1 2 3 CNVCC1 4 5 6 7 8 5 6 7 1 2 3 CNRS3B 4 CNAC3 2 black 3 1 1 2 3 CNRS3A 4 5 6 7 2 1 CNRT1 4 3 red 5 1 2 CNOUT1 3 yellow 4 5 6 12V CN51 CN3N 3 blue 21 CN3S 3 2 red 1 1 3 CN3D 2 5 4 3 2 1 ) DCCT1 1234 black red C14 T01 (Transfomer) Trouble Compressor ON/OFF N P ✻1 4 3 2 1 ACCT-U IPM1 ON OFF U red CNVDC ACCT1 123 V 1 2 14 1 14 9 1 1 1 9 1 2 3 4 1 2 3 4 CNDC1 black CNDR1 W CN15V2 CNDR2 CNDC2 black CNOUT2 1 2 3 4 SW1 F01 250VAC 2A T 1 12 345 ON OFF ON OFF 1 2 3 4 CNCT 6 1 2 CNTH green 1 CNCH 2 3 blue CN52F 2 yellow 3 1 1 CN52C2 2 blue 3 4 5 THHS1 SW2 1 LED1 operation LED2 error 4 CNRT2 X3 Power circuit board 1 (INV BOARD) CNVCC1 543 2 1 X2 X1 1 CN51C2 2 3 RELAY-BOARD1 12345678 CNAC2 F02 700VDC 2A T 4 3 CNCT2 2 blue 1 L1 1 2 L2 CNL1 1 2 1 2 3 4 5 6 7 8 CNL2 1 FILTER 2 3 BOARD 4 5 6 CNOUT CNIN 7 blue 8 green CNFG blue ACCT-W white black SW2 4 6 5 4 3 2 1 Gate amp board 1 (G/A BOARD) CN15V1 CNDC2 1 2 CNTR 3 1 LED1 operation LED2 error FAN control board (FAN BOARD) CNINV ✻2 or STEP DEMAND 1 2 3 4 5 CNRS2 6 7 AUTO CHANGEOVER HEAT/COOL SNOW Compressor ON/OFF NIGHT MODE 2 1 CNFAN X01 red 3 CNFG 1 blue 2 CNRS1 1234567 52F 52 C2 W 3 3 CN04 V U W U V 1 2 3 1 2 CH12 1 2 4 2 3 CN05 1 A1 A1 MF3 52F A2 13 14 52C2 A2 95 96 51C2 Fan motor (Heat exchanger) U VMC1 W Motor (Compressor) Fan motor MF1 (Heat exchanger) MF2 Name OFF 0% 100% OPEN 50% 75% SHORT HEAT NOTE:The broken lines indicate field wiring. COOL - CN3N 1-2P OPEN SHORT Auto changeover:OFF SHORT Auto changeover:ON OPEN CN3N 1-3P ✻2:Auto changeover (CN3N 1-2P,1-3P) OPEN SHORT CN3D 1-2P CN3D 1-3P OFF MODE NIGHT SHORT ON OPEN 1-2P CN3D SW4-7:ON (STEP DEMAND) SHORT ON ON/OFF 1-3P OPEN Compressor CN3D ✻1: Function according to switch operation. (SW4-7,CN3D 1-2P,and CN3D 1-3P) SW4-7:OFF (Compressor ON/OFF and NIGHT MODE) Earth terminal Function device Choke coil (Transmission) Z20 Low pressure sensor L1,L2 High pressure sensor High pressure switch bypass outlet temp.detect at Sub-cool coil Radiator panel temp. detect liquid outlet temp.detect at Sub-cool coil OA temp.detect Pipe temp.detect (Hex outlet) Discharge pipe temp. detect Electronic expansion valve (SC coil) Solenoid valve (Heat exchanger capacity control) Solenoid valve (Discharge-suction bypass) 4-way valve Crank case heater (Compressor) Fan motor (Radiator panel) Magnetic contactor (Fan motor) Overload relay (No.2 Compressor) Magnetic contactor (No.2 Compressor) Magnetic contactor (Inverter main circuit) DC reactor (Power factor improvement) DC Current Sensor AC Current Sensor 63LS 63HS 63H1,2 THHS1 TH8 TH7 TH6 TH5 TH11,12 LEV1 SV5b,c SV1,3 21S4a,b,c CH11,12 MF3 52F 51C2 52C2 52C1 DCL1 DCCT1 ACCT1 Symbol < Symbol explanation > Thermistor [2] PUHY-P450, P500, P550, P600, P650YGM-A - 57 - TB3 SYMBOL C.B. S.P.S. S.A.B. NF L DSA1 ZNR1,2 F TB1 TB2 NAME Circuit board Switching Power Supply Surge absorber board Noise Filter Choke coil(Transmission) Surge Absorber Varistor Fuse Terminal Power source M-NET transmission line block (Outdoor unit side) M-NET transmission line (Additional indoor unit side) Earth terminal SYMBOL EXPLANATION 220-240V~/N 50/60Hz Power source Breaker (3A) 3 3 2 2 1 S.A.B. CN4 CN1 2 L ZNR1 1 CN1 CN2 1 2 AC250V 2A F DSA1 CN2 CN3 1 C.B. 4 S.P.S. BOX BODY PE N L TB1 1 2 1 2 3 4 2 TB2 TB3 3 CN1 4 BOX BODY E NF BOX BODY BOX BODY 5 2 ZNR2 1 A B S A B S 1 ( M-NET TRANSMISSION LINE (OUTDOOR UNIT SIDE) ) M-NET TRANSMISSION LINE ADDITIONAL INDOOR UNIT SIDE [3] Power Dispatching Extension Unit for the Transmission Lines TH6 HEX F SV5b TH5 HEX B TH8 SCC 21S4b TH11 CJ1 63H - 58 LEV1 CP2 ST3 63HS COMP O/S 21S4a ST8 ST4 CP1 SV1 Drier TH7 ST7 ST6 ACC ST2 63LS CJ2 ST1 BV2 BV1 § Refrigerant Circuit [1] Refrigerant Circuit Diagram < PUHY-P200, P250, P300, P350YGM-A > TH6 HEX F SV5b TH5 HEX B TH8 SCC 21S4b TH11 CJ1 63H - 59 LEV1 CP2 ST3 COMP O/S 63HS ST8 ST4 CP1 SV1 Drier TH7 ST7 ST6 ACC ST2 63LS CJ2 BV2 ST1 BV1 < PUY-P200, P250, P300, P350YGM-A > - 60 - HEX F2 TH6 SV5b SV5c 21S4c HEX F1 TH5 HEX B 21S4b TH8 SCC ST6 CP3 COMP TH11 O/S LEV1 CJ1 63H 63HS 21S4a CP1 ST9 ST8 CJ2 Drier SV1 TH7 ST11 ACC ST10 63LS ST2 ST1 BV2 BV1 < PUHY-P400YGM-A > TH6 SV5b HEX1b (F) HEX1a (F) HEX2b (B) 21S4b SV5c 21S4c - 61 - TH5 HEX2a (B) 21S4a TH8 63H1 O/S SCC COMP 1 TH11 CV1 CP1 CP3 ST9 LEV1 ST8 Oil Tank CP2 ST6 SV1 ST5 63HS CJ1 CJ3 TH7 63H2 O/S Drier ST7 CV2 SV3 COMP 2 TH12 ST13 ST12 ST11 ST10 ACC 63LS CJ2 ST2 ST1 BV2 BV1 < PUHY-P450, P550, P600, P650YGM-A > [2] Functions of Principal Parts 1. Outdoor Unit Name Symbol (function) Notes Function Specification Compres- MC1 sor MC2 Adjusts the volume of circulating refrigerant by controlling the operating frequency with the operating pressure. (P200-type) High-pressure shell scroll type Winding resistance 20˚C : 0.72Ω (P250-P400 types) Low-pressure shell scroll type Winding resistance 20˚C : 0.583Ω High 63HS -pressure sensor 1 Detects high pressure 2 Regulates frequency and protects high pressure. 63HS 123 Connector Low 63LS -pressure sensor 1 Detects low-pressure 2 Protects low-pressure 63LS 123 Connector Pressure switch 63H1 63H2 Thermistor TH11, 12 (Discharge) 63H2 on P450 1 Detects high pressure -P650 types only 2 Protects high pressure TH12 on P450-P650 types only 1 Detects discharge temperature 2 Protects high pressure 0˚C 10˚C 20˚C 30˚C 40˚C 50˚C : : : : : : 698kΩ 413kΩ 250kΩ 160kΩ 104kΩ 70kΩ 60˚C 70˚C 80˚C 90˚C 100˚C 110˚C : 48kΩ : 34kΩ : 24kΩ : 17.5kΩ : 13.0kΩ : 9.8kΩ 1 Controls frequency 2 Controls defrost during heating operation 3 Controls LEV1 by detecting sub cool at the heat exchanger outlet, using HPS data and TH5 reading. TH5 (Piping temperature) TH6 (Outdoor air temperature) 1 Detects outdoor temperature 2 Controls fan operation TH7 TH8 Controls LEV1, using TH5, TH7, and TH8 THHS Inverter heat sink temperature Heat sink Controls inverter cooling fan, using THHS temperature. Pressure 0~4.15MPa Vout 0.5~3.5V 0.071V/0.098MPa Pressure [MPa] =1.38✕Vout[V]-0.69 1 Gnd (Black) 2 Vout (White) 3 Vcc (DC5V) (red) Pressure 0~1.7MPa Vout 0.5~3.5V 0.173V/0.098MPa Pressure [MPa] =0.566✕Vout[V]-0.283 1 Gnd (Black) 2 Vout (White) 3 Vcc (DC5V) (red) 4.15MPa Set to OFF R120=7.465kΩ R25/120=4057 Rt = 7.465exp{4057( R0=15kΩ R0/80=3460 Rt = 15exp{3460( 0˚C : 15kΩ 10˚C : 9.7kΩ 20˚C : 6.4kΩ Resistance value check 1 1 )} 273+t 393 Resistance value check 1 1 )} 273+t 273 25˚C : 5.3kΩ 30˚C : 4.3kΩ 40˚C : 3.1kΩ R0=17kΩ R25/120=4170 Rt = 1 17exp{4170( 273+t 1 )} 323 0˚C : 181kΩ 25˚C : 50kΩ 10˚C : 105kΩ 30˚C : 40kΩ 20˚C : 64kΩ 40˚C : 26kΩ - 62 - Check method Name Solenoid valve Symbol (function) Notes Function Specification SV1 Dischargesuction bypass 1 High/low pressure bypass at AC220~240V starting and stopping, and capacity Open when energized control during low-load operation Closed when not energized 2 High-pressure rise suppression SV3 P450-P650 Dischargetypes only suction bypass Provides compressor protection when Compressor No. 2 is at a stop SV5b Heat exchanger capacity control Controls outdoor unit heat exchanger AC220~240V capacity. Closed when energized Open when not energized Check method Continuity check with a tester SV5c P400-P650 Heat exchanger types only capacity control Linear LEV1 expansion (SC coil) valve Adjusts the volume of bypass flow from the outdoor unit during cooling operation. DC12V Opening of stepping motor driving valve 0-480 pulses (direct driven type) Same as indoor LEV. The resistance value is not the same as that of the indoor LEV. (Refer to the section on LEV troubleshooting.) Heater CH11, 12 Crankcase heater 4-way valve 21S4a Switches between cooling and heating cycles. Continuity check AC220~240V De-energized : cooling cycle with a tester Energized : heating cycle 21S4b Switches between cooling and heating cycles. Controls outdoor unit heat exchanger capacity. AC220~240V De-energized : cooling cycle (Outdoor unit heat exchanger capacity 100%) Energized : cooling cycle (Outdoor unit heat exchanger capacity 50%) or heating cycle Switches between cooling and heating cycles. Controls outdoor unit heat exchanger capacity. AC220~240V De-energized : cooling cycle (Outdoor unit heat exchanger capacity 100%) Energized : cooling cycle (Outdoor unit heat exchanger capacity 25%) or heating cycle 21S4c CH12 on P450-P650 types only P400-P650 types only Heats refrigerants in the compressor. Cord heater AC220~240V CH11,CH12·····1280Ω 45W Resistance value check 2. Indoor Unit Name Symbol (function) Linear LEV expansion valve Notes Function Specification 1 Adjusts superheat at the indoor DC12V heat exchanger outlet during Opening of stepping motor cooling driving valve 0-1400 pulses 2 Adjusts subcool at the indoor heat exchanger outlet during cooling Check method Refer to the section on continuity test with a tester Continuity between white-red-orange Continuity between yellow-brown-blue White M Red Orange Thermistor TH1 (Suction air temperature) TH2 (Piping temperature) Indoor unit control (Thermo) 1 Indoor unit control (Antifreeze/heat adjustment) 2 LEV control during heating operation (subcool detection) TH3 (Gas-side piping temperature) LEV control during cooling operation (superheat detection) TH4 (Outdoor air temperature) Indoor unit control (Thermo) Temperature sensor (Indoor air temperature) Indoor unit control (Thermo) - 63 - R0=15kΩ R0/80=3460 Rt = 15exp{3460( 0˚C 10˚C 20˚C 25˚C : 15kΩ : 9.7kΩ : 6.4kΩ : 5.3kΩ Yellow Brown Blue Resistance value check 1 1 )} 273+t 273 30˚C : 4.3kΩ 40˚C : 3.1kΩ ¶ Control [1] Dip Switch Functions and Their Factory Settings 1. Outdoor unit (1) Main board Switch SWU 1~2 Function according to switch setting OFF ON Function Set to 00 or 51-100 with the dial switch Unit address setting SW1 1~10 For self-diagnosis/operation monitoring Refer to the LED monitor display on the outdoor unit board SW2 Not connected to the centralized control Connected to the centralized control Before power on 2 Deletion of connection information Ordinary control Deletion Before power on 3 Deletion of error history Storage of IC/OC error history Deletion of IC/OC error history Anytime after power on (When switched from OFF to ON) 4 Refrigerant amount adjustment Ordinary control Refrigerant amount adjustment mode Anytime after power on (Except during initial start up mode/becomes ineffective 2 hours after compressor start up) 5 – – – – 6 – – – – 7 Forced defrost Ordinary control Start forced defrosting 10 minutes after Anytime after power compressor start up on (When switched from OFF to ON) 8 Defrost timer setting 50 minutes 90 minutes Anytime after power on (When switched from OFF to ON) – – – – – – – – 1 Test run: valid/invalid SW3-2 invalid SW3-2 valid Anytime after power on 2 Test run: ON/OFF Stops all ICs Test runs all ICs After power on and when SW3-1 is on. 3 Defrost start temperature -10 (-8 for 400-type units and above) -7 (-5 for 400-type units and above) Anytime after power on 4 Defrost end temperature 10 (7 for 400-type units and above) 15 (12 for 400-type units and above) Anytime after power on (except during defrost operation) – 5 – – – 6 Pump down operation Ordinary control Pump down operation After power on and while compressor is stopped 7 Heating Tcm 49˚C 53˚C Anytime after power on 8 9 10 – – – Unit model selection – – Before power on Refer to the next page – – – 1 – – – – 2 – – – – 3 – – – – 4 Emergency operation valid/invalid Valid Anytime after power on Invalid 5 – – – 6 – – – 7 SW5 Anytime after power on Centralized control switch 10 SW4 Before power on 1 9 SW3 Switch setting timing OFF ON Night mode/Step demand Night mode Demand function – – Before power on 8 – – – – 9 – – – – 10 – – – 1 Unit model selection Refer to the next page – Before power on 2 – – – – 3 – – – – 4 – – – – 5 – – – – 6 – – – – 7 – – – – 8 – – – – 9 – – – – 10 – – – – Note: All are set to OFF at factory shipment - 64 - . DipSW5-1 DipSW3-9 OFF ON OFF Standard specification Standard specification ON High-static pressure (60Pa) specification High-static pressure (30Pa) specification (2) INV board Switch SW1 SW2 Function Function according to switch setting OFF ON Switch setting timing OFF ON 1 Enabling/disabling the following error detection functions: ACCT, DCCT sensor circuit error (530X Detail No. 115, 116) ACCT, DCCT sensor error (530X Detail No. 117, 118) IPM open/Disconnected CNCT2 (530X Detail No. 119) Detection of erroneous wiring (530X Detail No. 120) Error detection enabled Error detection disabled 2 – – – – 3 – – – – 4 – – – – 5 – – – – 6 – – – – 0 1 1 Inverter address Anytime after power on Always leave it to ON 2 – – – – 3 – – – – 4 – – – – Note 1 Except for SW2-1, all are set to OFF at factory shipment. Unless otherwise specified, set the switch to OFF where indicated by “ ––,” which may be set to a certain setting for a reason. Note 2 Leave SW1-1 off during normal operation. If it is turned on, errors cannot be detected and the unit may be damaged. (3) FAN board Switch Function Function according to switch setting OFF SW2 1 Inverter address ON 0 5 Switch setting timing OFF ON Always leave it to ON 2 – – – – 3 – – – – 4 – – – – Note 1 Except for SW2-1, all are set to OFF at factory shipment. Unless otherwise specified, set the switch to OFF where indicated by “ ––,” which may be set to a certain setting for a reason. - 65 - 2. Indoor unit DIP SW1, 3 Switch 10 1 Power failure automatic return Power source start/stop Model selection 2 Louver 3 Vane 4 5 Vane swing function Vane horizontal angle 6 7 8 9 10 Vane angle set for cooling – Heating 4K up – – 9 SW3 Room temp. sensor position Clogged filter detect. Filter duration OA intake Remote display select. Humidifier control Heating thermo. OFF airflow Heating thermo. OFF airflow SW1 1 2 3 4 5 6 7 8 Function Cooling capacity saving for PKFY-P. VAM, effective/ineffective Function according to switch operation OFF ON Indoor unit inlet Built in remote controller None Provided 100h 2500h Ineffective Effective Fan output display Thermo. ON signal display At stationary heating Always at heat. Very low speed Low speed SW1-7 setting Set airflow Switch set timing OFF ON Remarks Always ineffective for PKFY-P.VAM Ineffective Effective Ineffective Heat pump Effective Cooling only None Provided None Provided None 1st setting Provided 2nd setting Not provided for PKFY-P.VAM Down blow B, C – Effective – – Horizontal – Ineffective – – Always down blow B,C for PKFY-P.VAM At unit stopping (at remote controller OFF ) Ineffective (ON) setting for floorstanding Note: When both SW1-7 and SW1-8 are being set to ON, the fan stops at the heating thermostat of OFF. Setting of DIP SW2 Model Capacity code (model name) SW2 setting P25 P32 P40 P50 P63 P71 4 5 6 8 10 13 14 ON ON ON OFF OFF OFF Model Capacity code (model name) SW2 setting P20 ON OFF ON ON OFF OFF ON OFF P80 P100 P125 P140 P200 P250 16 20 25 28 40 50 ON ON ON ON OFF OFF OFF OFF - 66 - ON OFF ON OFF Setting of DIP SW5 220V 240V ON OFF ON : 220V 230V OFF : 240V (PLFY-P·VLMD-E) Switch Function Operation by switch Switch set timing (PCFY-P-VGM-E) SWA Ceiling height setting Ceiling height 3 2 1 3 3.5m 2 2.8m 1 2.3m Always after powering (PDFY-P20 ~ 80VM-E, PEFY-P20 ~ 80VMM-E) SWA External static pressure setting 3 100Pa 2 50Pa 1 30Pa Always after powering For other models, change the setting of static pressure by replacing the connector. (PLFY-P-VAM-E) 2-way SWB SWA 1 2 3 2-way 4.0m (3.3m) 4.2m (3.5m) – 3-way 3.6m (3.0m) 4.0m (3.3m) 4.2m (3.5m) 4-way 3.2m (2.7m) 3.6m (3.0m) 4.2m (3.5m) 3-way 4-way SWB Setting of air outlet opening Always after powering Values in the parenthese are for P32~80 types. (PLFY-P-VAM-E, PCFY-P-VGM-E, PKFY-P-VGM-E, PDFY-P-VM-E) SWC Airflow control Option Set to the option to install the high efficiency filter. Standard - 67 - Always after powering 3. Remote controller (1) MA remote controller (PAR-20MAA) Removing the cover shows switches at the lower part of the remote controller unit. By operating these switches, the remote controller main/sub, and other function will be set. In normal case, do not change the setting except No.1 switch used to set the main/sub. (All setting at factory shipment are "ON." Remote controller unit ON 1 2 3 4 Selector switch Switch Function ON Remote controller unit OFF Action by switching 1 Main 2 At powering of remote controller Normal start up 3 Cooling/heating display at automatic setting Yes No Sets to "No" when not desiring to display "Cooling" or "Heating." Before powering 4 Inlet temperature display Yes No Sets to "No" when not desiring to display inlet temperature. Before powering Sub Sets one to "Sub" when connecting 2 sets in 1 group. Switch set timing Remote controller main/sub Before powering Timer mode Sets to "Timer mode start up" so desired at power start up failure return when the schedule timer is connected. Before powering (2) ME remote controller (PAR-F27MEA) Set the address of the remote controller with the rotary switch. 4 56 78 9 78 9 4 56 10 digits 1 digit (left) (right) 01 23 23 78 9 23 01 01 4 56 01 23 78 9 Rotary switch 45 6 Remote controller unit Example: In case of address 108 Address setting range Setting method Main remote controller 101 ~ 150 Set to the lowest indoor main unit address + 100. Sub remote controller 151 ~ 200 Set to the lowest indoor main unit address + 150. Setting of rotary switch Address No. 01 ~ 99 101 ~ 199 being added with 100 00 200 Note : To set addresses, use a precision screwdriver [(–), 20mm (w)], and apply load less than 19.6N. Operating with a method other than above may damage the rotary switch. ❉ The address No. that can be set with ME remote controller is limited to 101 ~ 200. The position of 100 will automatically be fixed to [1] when setting to "01 ~ 99", while it will automatically be fixed to [2] when setting to "00." ❉ At factory shipment, the rotary switch was set to 01. - 68 - [2] Controlling the Outdoor Unit 1. Initial control • When the power is turned on, the initial processing of the microcomputer is given top priority. • During the initial processing, control processing of the operation signal is suspended. The control processing is resumed after the initial processing is completed. (Initial processing: processing of the data inside the microcomputer and initial setting of each LEV opening, requiring up to approximately 2 minutes.) • During the initial processing, the LED monitor on the outdoor unit’s main board displays “S/W version”, “refrigerant type”, “heat pump”, “cooling only and capacity” in turn every second. 2. Control at start-up • The upper limit of frequency during the first 3 minutes of the operation is 50Hz. • When the power is turned on, normal operation will start after the initial start-up mode (to be described later) has been completed (with a restriction on the frequency). 3. Bypass control Bypass solenoid valves (P200-P400: SV1, P450-P650: SV1, SV3), which bypass the high- and low- pressure sides, operate in the following manner. (1) Bypass solenoid valve (SV1) (ON = Open) SV1 Operation Timing ON (Open) OFF (Close) At No. 1 compressor start up or at No. 2 compressor start up (P450-P650 types only) ON for 4 minutes After the restoration of thermo or 3 minutes after restart ON for 2 minutes During cooling or heating operation with the compressor stopped Always ON. (Exception : OFF when HPS-LPS 0.2MPa) After the operation has stopped ON for 3 minutes. (Exception : OFF when HPS 0.2MPa) During defrost operation (See figure ✻1 below) During oil-recovery operation Always ON Always OFF during cooling operation and always ON during heating operation when running an oil-recovery operation after running a continuous operation at low frequency. During an operation with the compressor running at 30Hz When low pressure (LPS) drops (After 3 minutes have past since start up) When low pressure (LPS) drops below 0.23 MPa. When low pressure (LPS) exceeds 0.38 MPa. When high pressure (Pd) rises When Pd exceeds 3.77 MPa When Pd is or below 3.43MPa and 30 seconds has passed [ Example of an SV1 operation ] Compressor Bypass solenoid valve (SV1) Start up (4-minute) Thermo. OFF Thermo. ON Defrosting Time (2-minute) (3-minute) (8-minute) (2) Bypass Valve (SV3, P450-P650 types only) (ON = Open) • The opening SV3 is controlled by the No.1 Compressor configuration of No.1 and No.2 compressor Stopped operations. - 69 - Stop No.2 Compressor SV3 Stopped OFF In operation Stopped ON In operation In operation OFF 4. Frequency control • Depending on the capacity required, the frequency of the compressor is controlled to keep constant the evaporation temperature (0˚C = 0.71MPa) during cooling operation and condensing temperature (49˚C = 2.88MPa) during heating operation. • The capacity of the P200-P400 is controlled solely by the inverter-driven compressor, and the capacity of P450-P650 is controlled by No.1 and No.2 compressors. • The following table shows the frequency change of the inverter compressor during normal operation. Model Frequency/cooling Frequency/heating Speed P200 type 30~81Hz 30~92Hz 3Hz/sec. P250 type 20~69Hz 20~85Hz 3Hz/sec. P300 type 20~83Hz 20~98Hz 3Hz/sec. P350 type 20~99Hz 20~106Hz 3Hz/sec. P400 type 20~100Hz 20~103Hz 3Hz/sec. P450 type (50/60Hz) 20~70/56Hz 20~83/73Hz 3Hz/sec. P500 type (50/60Hz) 20~85/73Hz 20~92/84Hz 3Hz/sec. P550 type (50/60Hz) 20~96/88Hz 20~99/93Hz 3Hz/sec. P600 type (50/60Hz) 20~104/98Hz 20~109/105Hz 3Hz/sec. P650 type (50/60Hz) 20~112/107Hz 20~120/113Hz 3Hz/sec. ✻ The maximum frequency during heating operation is affected by the outdoor air temperature to a certain extent. (1) No. 2 compressor operation/stop (P450-P650 types only) 1 No. 2 compressor going from stop to in-operation When No.1 compressor does not meet the capacity requirement, No.2 compressor will start its operation. 2 No. 2 compressor going from in-operation to stop When an operation of both No.1 and No.2 compressors exceeds the capacity requirement, No.2 compressor will stop its operation. (2) Pressure limit The maximum limit of high pressure (Pd) is set for each frequency level. If this limit is exceeded, the frequency will be reduced every 30 seconds. (3) Discharge temperature limit The discharge temperature (Td) of the compressor in operation is detected, and if it exceeds the upper limit, the frequency is reduced by 5 Hz. • Control is performed 30 seconds after compressor start-up and every 30 seconds thereafter. • Operating temperature is 105˚C for P200 type and 115˚C for P250-P650 types. (4) Periodic frequency control Frequency control other than the ones performed at startup, upon status change, and for protection is called periodic frequency control (conversent control) and is performed in the following manner. 1 Periodic control cycle Periodic control is performed after the following time has passed (a) 30 seconds after either compressor start up or the completion of defrost operation (b) 30 seconds after frequency control by discharge temperature or by pressure limit 2 The amount of frequency change The amount of frequency change is controlled to approximate the target value based on the evaporation temperature (Te) and condensing temperature (Tc). - 70 - 5. Defrost operation control (1) Starting the defrost operation • Defrost operation is started when the pipe temperature (TH5) of -10˚C or below (-8˚C or below for P400type and above) has continuously been detected for 3 minutes after the integrated compressor operation time of 50 minutes have passed. • If 10 minutes have passed since compressor start-up or since the completion of defrost operation, forced defrost operation will start by turning on the forced defrost switch (DIPSW2-7). • Even if the defrost prohibit timer is set to 90 minutes, the actual defrost prohibit time for the next operation will be 50 minutes if defrosting took 15 minutes. (2) Defrost operation Compressor frequency Model No.1 Compressor P200 type 72 – P250 type 53 – P300 type 65 – P350 type 65 – P400 type 114 – P450 type (50/60Hz) 110/100 ON (50/60Hz) P500 type (50/60Hz) 110/100 ON (50/60Hz) P550 type (50/60Hz) 110/100 ON (50/60Hz) P600 type (50/60Hz) 110/100 ON (50/60Hz) P650 type (50/60Hz) 110/100 ON (50/60Hz) Outdoor unit fan No. 2 Compressor Stopped SV1 ON SV3 (P450-P650 types only) ON 21S4a OFF 21S4b OFF 21S4c (P400-P650 types only) OFF SV5b OFF SV5c (P400-P650 types only) OFF 480 pulses LEV1 (3) Completion of defrost operation • Defrost operation will stop when 12 minutes have past since the beginning of defrost operation (15 minutes when the defrost prohibit timer is set to 90 minutes), or when the piping temperature (TH5) of 10˚C or above has been continuously detected for 2 minutes. (TH5 above 7˚C for 2 minitues for P400 models and above) • Defrost operation will not stop its operation for 2 minutes once started unless the piping temperature exceeds 25˚C within 2 minutes, in which case the operation will stop. (Above 20˚C within 2 minitues for P400 type models and above) (4) Problems during defrost operation • If a problem is detected during defrost operation, the operation will be stopped, and the defrost prohibition time based on the integrated compressor operation time will be set to 20 minutes. (5) Change in the number of operating indoor units during defrost operation • Even when there is a change in the number of operating indoor units during defrost operation, the operation will continue, and an adjustment will be made after the completion of the defrost operation. • Defrost operation will be continued, even if the indoor units stop or if thermo is turned off, until it has run its course. - 71 - 6. Refrigerant recovery control • Recovery of refrigerant is performed during heating operation to prevent the refrigerant from accumulating inside the unit while it is stopped (unit in fan mode), or inside the indoor unit that is in cooling mode or in heating mode with thermo off. It is also performed during cooling operation to prevent an excessive amount of refrigerant from accumulating in the outdoor heat exchanger. [During heating operation] (1) Initiation of refrigerant recovery • Recovery of refrigerant during heating operation begins when all of the following three conditions are met: 1 15 minutes have past since the completion of previous refrigerant recovery. 2 Td >105˚C (P200 type), 115˚C (P250-P650) 3 Frequencies below 50 Hz (2) Refrigerant recovery Opening of LEV during refrigerant recovery • Refrigerant is recovered with the LEV on the (Opening of indoor unit LEV: 400 pulses) applicable indoor unit (unit under stopping mode, Initial opening of LEV fan mode, cooling, heating with thermo off) being 30 seconds opened for 30 seconds. Start Finish • Periodic capacity control of the outdoor units and periodic LEV control of the indoor units will be suspended during refrigerant recovery operation; they will be performed after the recovery has been completed. • Defrost operation will be suspended until refrigerant recovery has been completed. [During cooling operation] (1) Initiation of refrigerant recovery • Recovery of refrigerant during cooling operation begins when all of the following conditions are met: 1 30 minutes have past since the completion of previous refrigerant recovery. 2 When discharge temperature has remained above the limit continuously. 3 Td > 95˚C (P200 type), 105˚C (P250-P650) or [Pd > 3.43MPa (35kg/cm2G and SC0 >10deg)] (2) Refrigerant recovery • Increase the opening of LEV1 (Periodic control begins when 30 seconds have elapsed). 7. Outdoor unit fan (1) Control method • The air volume of outdoor unit fan is controlled by the inverter control to maintain a constant evaporation temperature (0˚C = 0.71 MPa) during cooling operation and constant condensing temperature (49˚C = 2.88MPa) during heating operation, depending on the required capacity. • The capacity of the outdoor unit heat exchanger is controlled by the 4-way valve (21S4b, 21S4c) or the solenoid valve (SV5b, SV5c) (21S4c and SV5c for P400-P650 types only). (2) Control • Outdoor unit fan stops while the compressor is stopped (except when there is an input from snow sensor). • The fan operates at full speed for 5 seconds after start up (except the units with high static pressure specifications). • The outdoor unit fan stops during defrost operation. - 72 - (3) Patterns of outdoor unit heat exchanger capacity control [P200-P350types] Operation mode [P400-P650types] Heat exchanger capacity Inverter control Remarks 50% 5~100% 21S4b ON SV5b ON 100% 10~100% 21S4b OFF SV5b OFF Heating 100% 10~100% 21S4b ON SV5b OFF Defrost 100% 0% 21S4b OFF SV5b OFF Cooling Operation mode Heat exchanger capacity Number of fans Inverter control 25% 1 5~100% 21S4b, 21S4c ON SV5b, SV5c ON 50% 1 10~100% 21S4b ON, 21S4c OFF SV5b ON, SV5c OFF 100% 2 15~100% 21S4b, 21S4c OFF SV5b, SV5c OFF Heating 100% 2 10~100% 21S4b, 21S4c ON SV5b, SV5c OFF Defrost 100% 0 0% 21S4b, 21S4c OFF SV5b, SV5c OFF Cooling Remarks Note 1 : 21S4b and 21S4c are not energized during cooling cycle and energized during heating cycle. Note 2 : SV5b and SV5c are not energized when it is open and energized when it is closed. Note 3 : While the unit is stopped, 21S4b and 21S4c are not energized and in cooling cycle, and SV5b and SV5c are opened. 8. Subcool coil control (Linear expansion valve <LEV1>) • The amount of super heat is controlled and kept constant based on the bypass outlet temperature (TH8) of subcool coil every 30 seconds. • The degree of opening is controlled based on the subcool coil outlet/inlet temperature (TH5, TH7), high pressure (Pd), and discharge temperature. However, the LEV will be closed (0) during heating operation and when the compressor is stopped, and it will be open during cooling operation with thermo off. • It stays open at 480 during defrost operation. 9. Control at initial startup • If the unit is started within 2 hours of power on when the outdoor temperature is below a certain degree (below 5˚C for cooling operation and below -5˚C for heating operation), the unit will be on the stand-by mode and will not start for 30 minutes after power on. (P200 type only) • When the unit is started for the first time, it will run the following course of operation. Flow chart of initial operation mode Start of initial operation mode Step 1 • Operation of only No.1 compressor : f 50Hz and completed in the continuous integrated operation time of 20 minutes or the integrated time of 90 minutes. P250~P400 : f 60Hz and completed in the continuous integrated operation time of 20 minutes or the integrated time of 90 minutes. P450~P650 : For the first 30minutes f 60Hz, 30minutes and on f 85Hz. No.2 compressor not in operation. Completed in the integrated operation time of 40 minutes. P200 Exception : completed if discharge super heat reaches above 25˚C within 5 minutes of start up. P450~P650 types Step 3 • Forced operation of only No.2 compressor • Completed in the integrated operation time of 5 minutes Completion of initial operation - 73 - P200~P400 type < Initial start-up control of P450-P650 type units: Time chart > [Example1] Completion of initial start up operation 40 minutes 5 minutes Step 1 Step 3 No.1 compressor ON/OFF No.2 compressor ON/OFF 10. Emergency operation mode (P450-P650 types only) Emergency operation mode is an operation that the unit runs on a first-aid basis when problems occur with the compressors (No.1, No.2). It can be started by performing an error reset on the remote controller. (1) Starting an emergency operation 1 Occurrence of error → error source and error code displays on the remote controller 2 Error reset on the remote controller 3 If the remote controller displays the type of error that allows an emergency operation, (as in above) (refer to the table below) the unit will begin “ retry ” operation. (Same usual operation as the operation after error reset.) 4 When the same type of error is detected during the “ retry ” operation Item 3 above, perform another error reset on the remote controller and run an emergency operation suitable for the type of the error. Pattern of emergency operation mode Problems with No.1 (INV) Problems with No.2 Error source Codes of the errors that allow an emergency operation Outdoor unit Codes of the errors that do not allow an emergency operation Operation Heatsink thermistor <Inverter error> Over-current break Overload protection Heatsink overheat protection Cooling fan error Bus voltage drop protection IDC sensor/circuit error VDC sensor/circuit error THHS sensor/circuit error IPM communication error 4230 Emergency operation with only No.2 compressor 4250 4240 4230 4260 4220 5301 4200 5110 0403 ✻ After a “ retry ” operation, if a different type of error that is listed under <Inverter error> on the left is detected, an emergency operation is run after a reset. 4250 → reset → retry → 4240 → reset → emergency operation Over-current protection 4108 All errors other than the ones listed on the left Emergency operation with only No.1 compressor (2) Finishing the emergency operation mode [Finishing conditions] When one of the following conditions is met, emergency operation will end. 1 When an integrated operation time of compressor in cooling mode operation has reached 4 hours. 2 When an integrated operation time of compressor in heating mode operation has reached 2 hours. 3 When an error is detected that does not allow the unit to run an emergency operation. [Control at the completion of and after an emergency operation] • To end the operation, stop the compressor and bring up the error code on the display on the remote controller. • If another error reset is performed upon finishing an emergency operation, the unit will run a “ retry ” operation again and will repeat the procedures 1 through 4 under section (1) above. • To finish an emergency operation and to run a current-carrying operation after correcting the error, perform a power reset. - 74 - 11. Operation mode (1) Indoor unit operation modes An operation mode can be selected from the following 5 modes on the remote controller. 1 Cooling mode 2 Heating mode 3 Dry mode 4 Fan mode 5 Stopping mode (2) Outdoor unit operation mode 1 Cooling mode All indoor units in operation are in cooling mode. 2 Heating mode All indoor units in operation are in heating mode. 3 Stopping mode All indoor units are in fan mode or stopping mode. Note : If the outdoor unit is already in the cooling mode, other indoor units (in stopping mode, fan mode, thermo OFF) will not run a heating operation when directed to do so, and “HEAT” on the remote controller will blink. When the outdoor unit is already in the heating mode, the reverse will be true. (The first selection made on the remote controller has the priority.) 12. Demand control Cooling/heating operation can be prohibited (thermo OFF) by an external input to the indoor units. Note : When DIPSW4-7 are on, STEP DEMAND are possible. NIGHT MODE will become unavailable however. SW4-7 : OFF (Compressor ON/OFF and NIGHT MODE) CN3D 1-3P CN3D 1-2P Compressor ON/OFF OPEN SHORT NIGHT MODE ON OPEN OFF OFF SHORT ON SW4-7 : ON (STEP DEMAND) CN3D 1-2P SHORT OPEN CN3D 1-3P OPEN 100% (no demand) 75% 0% 50% SHORT Note the following steps to be taken when using the STEP DEMAND (Example) When witching from 100% to 50% Demand control steps (Wrong) 100% → (Correct) 100% → 0% → NO 75% → OK 50% 50% If the step listed as the wrong example above is taken, thermo may go off. The percentage of the demand listed in the table above is an approximate value based on the compressor volume and does not necessarily correspond with the capacity. [ Example of wiring connection ] Adaptor for external input (PAC-SC36NA) Power supply to relay Remote controller board Relay circuit Orange 1 SW1 X Brown 2 Y Red 3 X SW2 Y Outdoor unit controller board CN3D To be acquired on site Maximum allowable length of wiring is 10 m. SW1 : NIGHT MODE or demand command SW2 : Demand command X,Y : Relay (contact rating DC1mA) - 75 - [3] Operation Flow Chart 1. Flow to determine the mode (1) Indoor unit (cooling, heating, dry, fan mode) Normal operation Trouble observed Start Stop Breaker turned on NO YES Operation SW turned on 1 From outdoor unit YES NO 1. Protection function self-holding cancelled. 2. Indoor unit LEV fully closed. Note: ❉1 Note: ❉2 Remove controller display extinguished NO Error mode YES Operation mode Error stop YES Auxiliary heater ON NO 1. Auxiliary heater OFF 2. Fan low speed for 1 minute Error display Cooling mode Heating mode Dry mode Fan mode Protection function self-holding Cooling display Heating display Dry display Fan display FAN stop Note: ❉3 YES YES 3-minute drain pump ON Drain pump ON NO Error command to outdoor unit Indoor unit LEV fully closed Prohibition NO Cooling operation Refer to 2-(1) Note: ❉3 Note: ❉3 YES Prohibition YES Prohibition NO Heating operation Refer to 2-(2) NO Dry operation Refer to 2-(3) Fan operations Prohibition “Remote controller blinking” Operation command to outdoor unit (to 2 ) Notes : ❉1 Indoor unit LEV fully closed : Opening 41. ❉2 The error mode includes that of indoor units and outdoor units. At indoor side error (excluding water leak), the indoor unit in trouble only will be stopped in emergency, while at outdoor side error, all indoor units connected will be stopped. ❉3 Prohibition status is observed when the set cooling/heating mode is different from that of the outdoor unit. - 76 - (2) Outdoor unit (cooling, heating mode) Normal operation Start Trouble observed Stop NO Breaker turned on YES “HO” blinks on the remote controller NO Note: ❉1 Set indoor address No. to remote controller YES NO 1. Protection function selfholding cancelled 2. LEV1 fully closed 2 From outdoor unit Operation command YES Operation mode Cooling-only, Heating-only, Cooling/heating mixed Note: ❉2 YES Error mode Error stop NO 1. 52C1 OFF 2. Inverter output 0Hz 3. Outdoor fan Stop 4. All solenoid valve OFF 52C1 ON Outdoor unit LED error display Note: ❉3 Operation mode Protection function self-holding Error command to indoor unit Cooling/dry operation Refer to 2-(1), 2-(3) Heating operation Refer to 2-(2) Operation command to indoor unit To 1 Notes : ❉1 For about 3 minutes after turning on power source, address and group information of outdoor unit, indoor unit, and remote controller are retrieved by remote controller, during which “HO” blinks on and off on remote controller. In case indoor unit is not grouped to remote controller, “HO” display on remote controller continues blinking even after 3 minutes after turning on power source. ❉2 Two trouble modes include indoor unit side trouble, and outdoor unit side trouble. In the case of indoor unit side trouble, error stop is observed in outdoor unit only when all the indoor units are in trouble. However, if one or more indoor units are operating normally, outdoor unit shows only LED display without undergoing stop. ❉3 The operation mode conforms to mode command by indoor unit. However, when outdoor unit is under cooling operation, the operation of indoor unit will be prohibited even by setting indoor units under operation, or indoor unit under stopping or fan mode to heating mode. Reversely when outdoor unit is being under heating operation, the same condition will be commenced. - 77 - 2. Operation under each mode (1) Cooling operation Normal operation Cooling operation Trouble observed Stop 4-way valve OFF Indoor unit fan operations Test run start Note: ❉1 YES NO NO Thermostat ON YES YES 3-minute restart prevention NO 1. Inverter output 0Hz 2. Indoor LEV, LEV1 rated opening 3. All solenoid valves OFF 4. Outdoor unit fan stop 5. 52C1 OFF 1. Inverter frequency control 2. Indoor unit LEV, LEV1 control 3. Solenoid valve control 4. Outdoor unit fan control 5. 52C1 control Note : ❉1 The indoor fan operates at the set notch under cooling regardless of thermostat ON/OFF. - 78 - (2) Heating operation Normal operation Trouble observed Stop Test run Heating operation Note: ❉1, 2 Defrost operation YES NO 4-way valve OFF Test run start 4-way valve OFF 1. Indoor unit fan stop 2. Inverter defrost frequency control 3. Indoor unit LEV fully closed 4. Solenoid valve control 5. Outdoor unit fan stop 6. LEV1 control 7. 52C1 control YES NO NO Thermostat ON YES YES Note: ❉1, 2 NO Defrost end 3-minute restart prevention YES NO 1. Indoor unit fan very low speed operation 2. Inverter output 0Hz 3. Indoor unit LEV, LEV1 fully closed 4. Solenoid valve all OFF 5. Outdoor unit fan stop 6. 52C1 OFF Defrost end 1. Indoor and outdoor unit fan control 2. Inverter frequency control 3. Indoor unit LEV, LEV1 control 4. Solenoid valve control 5. 52C1 control Return to heating operation Notes : ❉1 When outdoor unit starts defrosting, it transmits defrost operations command to indoor unit, and the indoor unit starts defrosting operations. Similarly when defrosting operation stops, indoor unit returns to heating operation after receiving defrost end command of outdoor unit. ❉2 Defrost ending condition : Defrost operation for 10 minutes or more, or outdoor piping temperature : refer to “5. Defrost operation control” of [2] ControlIing the Outdoor Unit. - 79 - (3) Dry operation Normal operation Dry operations Trouble observed Stop 4-way valve OFF Test run start YES Note: ❉2 NO Thermostat ON NO Inlet temp. ≥ 18°C YES 1. Indoor unit fan stop 2. Inverter output 0Hz 3. Indoor unit LEV, LEV1 fully closed 4. Solenoid valve OFF 5. Outdoor unit fan stop 6. 52C1 OFF 1. Outdoor unit (Compressor) intermittent operations 2. Indoor unit fan intermittent operations (Synchronized with compressor : low speed, OFF operations) Note: ❉1 1 or 2 Notes : ❉1 When indoor unit inlet temperature exceeds 18°C, outdoor unit (compressor) and indoor unit fan start intermittent operations synchronously. The fan always operates (at low spped) when it decreases below 18˚C. Operations of outdoor unit, indoor unit LEV and solenoid valve accompanying compressor ON are the same as those in cooling operations. ❉2 Thermostat is always kept on in test run, and indoor and outdoor unit intermittent operation (ON) time is a little longer than normal operations. - 80 - • Test Run [1] Check Items before Test Run 1 Check refrigerant leak, loose power source or transmission line if found. 2 Measure resistance between the power source terminal block and ground with a 500V megger to confirm it is exceeding 1.0MΩ. Notes: 1. Do not operate the unit when the insulation resistance stays below 1.0MΩ. 2. Never apply a megger to the transmission line terminal block. Otherwise, the control board will be damaged. 3. At immediately after installation or when the unit is left with the main power source turned off for a long time, the insulation resistance between the power source terminal block and ground may drop down to 1MΩ approximately due to refrigerant accumulated inside the compressor. 4. When the insulation resistance counts for more than 1MΩ, power the crankcase heater for 12 hours or more by turning the main power source on. Doing this way evaporates refrigerant inside the compressor leading to increase the insulation resistance. 5. Never measure the insulation resistance of the transmission terminal block for the MA remote controller. 3 Confirm that the ball valves are fully opened at both gas and liquid sides. Note: 1. Make sure to tighten the cap. 4 Check the phase order of the 3-phase power source and the voltage between each phase. Note: 1. Open phase or reverse phase causes the emergency stop of test run. (4103 error) 5 [When connected to the transmission booster for transmission line] Before turning on the outdoor unit, turn on the transmission booster for transmission line. Notes: 1. When the outdoor unit is turned on first, connection information of refrigerant system may not be confirmed normally. 2. If the outdoor unit is turned on first, after turning on the transmission booster for transmission line, reset the power of the outdoor unit. 6 Turn the main power source on 12 hours at least before test run to power the crankcase heater. Note: 1. Shorter powering time may cause compressor trouble. [2] Test Run Method ❉ The illustration shows MA remote controller. ( )Powering display Check code display Test run remaining time display Indoor unit liquid pipe temperature display 1Hr. CENTRALLY CONTROLLED ßC ON OFF DAILY AUTO OFF CLOCK FILTER REMAINDER CHECK CHECK MODE Test run display ON/OFF lamp ON/OFF button TEST RUN STAND BY DEFROST ßC ERROR CODE NOT AVAILABLE LIMIT TEMP. TEMP ON/OFF Set temperature button CLOCK ON OFF Operation selector button FILTER Vertical air direction button Test run button CHECK TEST PAR-F27MEA TIMER SET Ventilation button Air speed button Louver button Operation procedure 1 Turn on universal power supply at least 12 hours before getting started 2 Press TEST button twice 3 Press selection button 4 Press air is blowing out select button to change from cooling to heating operation, and vice versa 5 Press 6 Press 7 Make sure that indoor unit fans operate normally 8 Make sure that interlocking devices such as ventilator operate normally if any 9 Press ON/OFF button to cancel test run Note 1: 2: 3: 4: adjust button or Displaying “HO” on display panel for about 5 minutes Displaying “TEST RUN’’ on display panel Make sure that air is blowing out Make sure that warm or cold Make sure that air blow is changed button to change wind Make sure that horizontal or downward blow is adjustable. Stop operation If check code is displayed on remote controller or remote controller does not operate normally. Test run automatically stops operating after two hours by activation of timer set to two hours. During test run, test run remaining time is displayed on time display section. During test run, temperature of liquid pipe in indoor unit is displayed on remote controller room temperature display section. adjust button, depending on the model, “NOT AVAILABLE” may be displayed on remote controller. 5: When pressing However, it is not a malfunction. or button, depending on the model, “NOT AVAILABLE” may be displayed on remote controller. 6: When pressing However, it is not a malfunction. - 81 - [3] Operating Characteristics and Refrigerant Amount Clarify relationship between the refrigerant amount and operating characteristics of CITY MULTI new refrigerant series, and perform service activities such as decision and adjustment of refrigerant amount on the market. 1. Operating characteristics and refrigerant amount The followings are operating characteristics and refrigerant amount which draw special attention. 1 During cooling operation, the amount of refrigerant in the accumulator is the smallest when all indoor units are in operation. 2 During heating operations, liquid level of accumulator is the highest when all the indoor units are operating. 3 Tendency of discharge temperature Discharge temperature is more likely to rise when there is a lack of refrigerant. Little change in discharge temperature is seen, even if the refrigerant is increased or decreased while there is refrigerant in the accumulator. Discharge temperature is more likely to rise when high-pressure is high. Discharge temperature is more likely to rise when the low temperature is low. 4 (P250-P650 types) Compressor shell temperature is 10~60K higher than low pressure saturation temperature (Tc) when refrigerant amount is appropriate. → Judged as over replenishment when temperature difference from low pressure saturation temperature (Te) is 5K or less. (P200 type) The shell temperature of the compressor is roughly equal to the discharge temperature. → Make a judgment from the discharge temperature [4] Adjustment and Judgment of Refrigerant Amount 1. Symptom The symptoms shown in the table below are the signs of excess or lack of refrigerant amount. Be sure to adjust refrigerant amount in the refrigerant amount adjustment mode, by checking operation status, judging refrigerant , amount and performing selfdiagnosis with LED, for overall judgment of excess or lack of refrigerant amount . 1 Emergency stop at 1500 remote controller display (excessive refrigerant replenishment) 2 Operating frequency does not fully increase, thus resulting in insufficient capacity 3 Emergency stop at 1102 remote controller display (discharge temperature trouble) Excessive refrigerant replenishment Insufficient refrigerant replenishment 2. Refrigerant volume Checking the operating condition Operate all the indoor units on cooling or on heating, checking the discharge temperature, sub-cooling, low pressure saturation temperature, inlet temperature, shell bottom temperature, liquid level, liquid step, etc. and renderingl an overall judgment. Condition Judgment 1 Discharge temperature is high. (Normal temperature: 95˚C or below) 2 Low pressure is extremely low. 3 Inlet superheating is high (if normal, SH = 20K or lower). 4 (P250-P650 types) Shell bottom temperature is high (the difference with the low pressure saturation temperature ❉1 is 60K or greater) (P200 type) The shell temperature of the compressor is roughly equal to the discharge temperature. → Make a judgment from the discharge temperature 5 (P250-P650 types) Shell bottom temperature is low (the difference with the low pressure saturation temperature ❉1 is 5K or higher.) (P200 type) The shell temperature of the compressor is roughly equal to the discharge temperature. → Make a judgment from the discharge temperature 6 Inlet super heating is low (if normal, SH = 10K or higher). ❉1 Low pressure saturation temperature (Low pressure shell compressor) - 82 - Refrigerant volume tends toward insufficient. Refrigerant volume tends toward overcharge. 3. Amount of additional refrigerant to be charged At the time of shipping from the factory, the outdoor unit is charged with the amount of refrigerant shown in the following table, but since no extension piping is included, please carry out additional charging on-site. Outdoor unit model name P200 P250 P300 P350 P400 P450 P500 P550 P600 P650 Refrigerant charge volume 7.0kg 9.5kg 9.5kg 9.5kg 13.0kg 22.0kg 22.0kg 22.0kg 22.0kg 22.0kg Calculation formula: Calculate the additional refrigerant volume by calculating the size of the extension liquid piping and its length (unit : m) Additional refrigerant volume (kg) = (0.2 x L1) + (0.12 x L2) + (0.06 x L3) + (0.024 x L4) + α L1 : Length of φ 15.88 liquid pipe (m) L2 : Length of φ 12.7 liquid pipe (m) L3 : Length of φ 9.52 liquid pipe (m) L4 : Length of φ 6.35 liquid pipe (m) α : Refer to the right table. Total capacity of connected indoor unit ~ 80 81 ~ 160 161 ~ 330 331 ~ 480 481 ~ 630 631 ~ 710 711 ~ 890 891 ~ 1070 α 1.0kg 1.5kg 2.0kg 2.5kg 3.0kg 4.0kg 5.0kg 6.0kg ❉ In the calculation results, round up fractions smaller than 0.01kg. (Example: 14.04kg → 14.1kg) Example: PUHY-P650YGM-A φ 9.52 (10m) φ 12.7 (10m) φ 9.52 (10m) φ 15.88 (30m) φ 9.52 (20m) 250 125 φ 9.52 (10m) 80 φ 9.52 (10m) 63 Each pipe is of liquid piping. φ 15.88 φ 12.7 φ 9.52 φ 6.35 : 30m : 10m : 10m + 10m + 20m + 10m + 10m = 60m : 10m From the above calculation formula, Additional charge volume = (0.2 x 30) + (0.12 x 10)+ (0.06 x 60) + (0.024 x 10) + 3 = 14.04kg 14.04kg obtained is converted in a unit of 0.1kg. Therefore, Additional charge volume = 14.1kg - 83 - φ 6.35 (10m) 20 [5] Refrigerant Volume Adjustment Mode Operation Since the refrigerant volume adjustment introduced in this chapter is just for emergency need, correct adjustment to meet the rated refrigerant volume is difficult. Please judge for adequate volume by following the flow chart later under normal operation mode. 1. Procedure Depending on the operating conditions, it may be necessary either to charge with supplementary refrigerant, or to drain out some, but if such a case arises, please follow the procedure given below . (1) Switching the function select switch (SW2-4), located on the outdoor unit's control board, ON starts refrigerant volume adjustment mode operation and the following operation occurs Operation The outdoor unit LEV1 diverges more than usual during cooling operation. Notes: 1. Even if the refrigerant volume has reached a suitable level shortly after starting refrigerant volume adjustment mode, if left for a sufficient length of time (once the refrigeration system has stabilized), there are times when this level may become unsuitable. 1) The refrigerant volume is suitable; When the refrigerant volume for TH5 - TH7 is more than 5K at the outdoor unit, and 5 to 15K for SH at the indoor unit. 2) The current volume is suitable, however, may become unsuitable after a certain length of time; When the refrigerant volume for TH5 - TH7 is less than 5K at the outdoor unit, or less than 5K for SH at the indoor unit. 2. There are times when it becomes difficult to determine the volume when performing refrigerant adjustments if the high pressure exceeds 2.0MPa. 3. Based on the following flowchart, use TH11, TH5, TH7 and Tc to adjust the refrigerant volume. Use the selfdiagnosis switch (SW1) on the outdoor unit main PCB to display TH11, TH5, TH7 and Tc. 4. Refrigerant adjustment mode operation will automatically stop in 90 minutes. By turning off and on SW 2-4, the adjustment mode operation can be run again. Self-diagnosis switch for TH11 1 2 3 4 5 6 Self-diagnosis switch for TH5 7 8 9 10 1 2 3 4 5 ON 6 7 8 9 10 ON Self-diagnosis switch for TH7 1 2 3 4 5 6 Self-diagnosis switch for Tc 7 8 9 10 1 2 3 4 5 ON ON Using these, judge TH11, Tc - TH5 and Tc - TH7. - 84 - 6 7 8 9 10 [ Refrigerant Adjustment Method ] Start SW2-4 ON YES NO All indoor units are run in test cooling mode Has the initial start-up mode been completed? Minimum of 30 minutes continuous operation ❉ Refer to the previous page for Notes 1 through 4. NO NO YES NO Is TH11 ≤ 100˚C ? Add a small amount of refrigerant at low pressure service port. YES Has the compressor operating frequency stabilised? Note2 A stable com pressor frequency. NO YES Wait 5minutes before making next judgment. Note1 Is 8 ≤ TC-TH5 ≤ 12K ? NO Wait 5 minutes before making judgment on Tc-TH5. Note1 YES Add a small amount of refrigerant at low pressure service port. NO Is Tc-TH7 ≥ 20K ? Note3 Is Tc-TH5 < 8K ? YES YES NO Wait 5minutes before making next judgment. Note1 Add a small amount of refrigerant at low pressure service port. NO Add a small amount of refrigerant at low pressure service port. Is TH11 ≤ 95˚C ? Remove a small amount of refrigerant at low pressure service port. YES System has the correct amount of refrigerant SW2-4 OFF Note4 Caution Ensure that no refrigerant is released into the atmosphere. Caution Use liquid refrigerant to fill the system. • If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change and performance may drop. - 85 - [6] Symptoms that do not Signify Problems Symptom Remote controller display Cause Indoor unit does not run while operating for cooling (heating). "COOL (HEAT)" blinking display Unable to execute cooling (heating) operation while other indoor unit is under cooling (heating) operation. Auto-vane runs freely. Normal display Because of the control action of the auto-vane, horizontal blow may be commenced automatically one hour after using for down blow in cooling. Horizontal blow will also be commenced at defrosting under heating, at the time of the hot adjust and the thermostat off. Air speed setting switches over freely during heating operation. Normal display Very low speed operation is commenced at thermostat OFF. At thermostat ON, the very low speed operation automatically changes over to the set value by the time or piping temperature. Fan stops during heating operation. Defrosting Fan does not stop while stopping operation. Extinguished When the auxiliary heater is turned on, fan operates for one minute after stopping to remove residual heat. Air speed does not attain the set value even though turning operation switch to "ON." Preparing heating Very low speed for 5 minutes after SW "ON" or until the piping temperature reaches 35˚C. Thereafter, the set value is commenced after low speed for 2 minutes. (Hot adjust control) Outdoor unit does not run while starting operation. Normal display When outdoor unit is cooled down with refrigerant stagnated, operate the compressor for 35 minutes maximum to warm up. (model 200) Fan operation will be done during the warming up. The display shown right will appear on the indoor unit remote controller for about 5 minutes when the main power source is turned on. "HO" blinking display The system is under starting up. Operate the remote controller after the blinking of “HO” is disappeared. Drain pump does not stop while the operation is stopped. Extinguished At stopping of cooling operation, drain pump operates for 3 minutes further. Fan stops under defrosting operation. Run drain pump if drain water is generated even under stopping. Drain pump runs even during unit stopping. - 86 - [7] Standard Operation Data (Reference Data) 1. Cooling operation [Standard type] Outdoor unit Items Ambient temp. PU(H)Y-P200 PU(H)Y-P250 PU(H)Y-P300 27.0/19.0 27.0/19.0 27.0/19.0 35.0/24.0 35.0/24.0 35.0/24.0 4 4 4 4 4 4 Indoor DB/WB Outdoor Quantity Set Indoor unit Quantity in operation Model – 71 63 50 20 100 71 63 20 125 80 63 32 Condition Main pipe 5 5 5 10 10 10 45 45 45 – Hi Hi Hi Refrigerant volume kg 11.0 13.9 13.9 Total current A 10.3/9.4 13.0/11.9 16.1/14.7 Volts V 380/415 380/415 380/415 Compressor frequency Hz 81 69 83 Piping Branch pipe m Total piping length Indoor unit fan notch Outdoor t unit LEV opening Pressure Indoor unit SC (LEV1) 362 187 325 253 441 187 387 275 441 261 82 100 123 3.00/0.92 2.87/0.96 3.05/0.92 Discharge (TH11) 84 86 83 Heat exchanger outlet (TH5) 39 41 46 14 14 14 14 14 14 27 23 22 Shell bottom (Compressor) 80 39 44 SCC outlet (TH7) 19 20 21 Bypass outlet (TH8) 10 11 10 LEV inlet 19 19 20 Heat exchanger outlet 13 13 13 High pressure(after O/S) /Low pressure(before accumulator) Accumulator Sectional temp. 253 441 Pulse Inlet Outlet Outdoor unit Suction (Compressor) Indoor unit MPa ˚C - 87 - Outdoor unit Items Ambient temp. PU(H)Y-P350 PUHY-P400 PUHY-P450 27.0/19.0 27.0/19.0 27.0/19.0 35.0/24.0 35.0/24.0 35.0/24.0 4 4 4 4 4 4 Indoor DB/WB Outdoor Quantity Set Indoor unit Quantity in operation Model – 140 125 63 32 200 100 63 32 200 125 80 50 Condition Main pipe Piping Branch pipe m Total piping length Outdoor unit Pressure 5 10 10 10 45 45 45 – Hi Hi Hi Refrigerant volume kg 14.7 18.2 21.6 Total current A 19.2/17.6 22.6/20.7 22.9/21.0 Volts V 380/415 380/415 380/415 Hz 99 100 50Hz : 70/50 60Hz : 56/60 Indoor unit 428 387 441 261 324 325 441 261 324 387 275 362 Pulse SC (LEV1) 140 164 183 3.21/0.87 2.91/0.94 2.95/0.86 Discharge (TH11/TH12) 88 86 82/85 Heat exchanger outlet (TH5) 46 45 41 14 16 15 14 16 15 24 23 21/17 Shell bottom (Compressor) 49 48 33/42 SCC outlet (TH7) 25 27 25 Bypass outlet (TH8) 10 11 9 LEV inlet 24 26 24 Heat exchanger outlet 13 15 13 High pressure(after O/S) /Low pressure(before accumulator) Accumulator Sectional temp. 5 Indoor unit fan notch Compressor frequency (No.1/No.2) LEV opening 5 Inlet Outlet Outdoor unit Suction (Compressor) Indoor unit MPa ˚C - 88 - Outdoor unit Items Ambient temp. Indoor PUHY-P500 PUHY-P550 27.0/19.0 27.0/19.0 35.0/24.0 35.0/24.0 4 4 4 4 DB/WB Outdoor Quantity Set Indoor unit Quantity in operation Model – 250 125 100 32 250 140 125 50 Condition Main pipe Piping Branch pipe m Total piping length Outdoor unit Pressure 10 10 45 45 – Hi Hi Refrigerant volume kg 22.1 28.1 Total current A 26.3/24.0 28.8/26.4 Volts V 380/415 380/415 Hz 50Hz : 95/50 60Hz : 73/60 50Hz : 96/50 60Hz : 88/60 Indoor unit 388 387 325 261 388 373 387 Pulse 204 226 3.02/0.86 2.85/0.85 84/87 2.85/0.85 42 40 15 15 15 15 21/17 19/17 37/42 42/42 SCC outlet (TH7) 25 24 Bypass outlet (TH8) 8 8 LEV inlet 24 23 Heat exchanger outlet 13 13 SC (LEV1) High pressure(after O/S) /Low pressure(before accumulator) MPa Discharge (TH11/TH12) Heat exchanger outlet (TH5) Accumulator Sectional temp. 5 Indoor unit fan notch Compressor frequency (No.1/No.2) LEV opening 5 Inlet Outlet Outdoor unit Suction (Compressor) ˚C Shell bottom (Compressor) Indoor unit - 89 - 362 Outdoor unit Items Ambient temp. PUHY-P600 PUHY-P650 27.0/19.0 27.0/19.0 35.0/24.0 35.0/24.0 5 5 5 5 Indoor DB/WB Outdoor Quantity Set Indoor unit Quantity in operation Model – 200 200 125 50 25 250 200 125 50 25 Condition Main pipe Piping Branch pipe m Total piping length Outdoor unit Pressure 10 10 55 55 – Hi Hi Refrigerant volume kg 28.3 29.3 Total current A 29.6/27.1 33.1/30.3 Volts V 380/415 380/415 50Hz : 104/50 60Hz : 98/60 Hz Indoor unit 324 324 387 362 50Hz : 112/50 60Hz : 107/60 222 388 324 387 Pulse 246 266 2.93/0.84 3.03/0.83 84/86 86/86 41 43 15 14 15 14 19/17 18/15 47/43 53/49 SCC outlet (TH7) 24 26 Bypass outlet (TH8) 8 7 LEV inlet 24 24 Heat exchanger outlet 12 12 SC (LEV1) High pressure(after O/S) /Low pressure(before accumulator) MPa Discharge (TH11/TH12) Heat exchanger outlet (TH5) Accumulator Sectional temp. 5 Indoor unit fan notch Compressor frequency (No.1/No.2) LEV opening 5 Inlet Outlet Outdoor unit Suction (Compressor) ˚C Shell bottom (Compressor) Indoor unit - 90 - 362 222 2. Heating operation [Standard type] Outdoor unit Items Ambient temp. PUHY-P200 PUHY-P250 PUHY-P300 20.0/- 20.0/- 20.0/- 7.0/6.0 7.0/6.0 7.0/6.0 4 4 4 4 4 4 Indoor DB/WB Outdoor Quantity Set Indoor unit Quantity in operation Model – 71 63 50 20 100 71 63 20 125 80 63 32 Condition Main pipe 5 5 5 10 10 10 45 45 45 – Hi Hi Hi Refrigerant volume kg 11.0 13.9 13.9 Total current A 10.0/9.2 12.8/11.7 15.3/14.0 Volts V 380/415 380/415 380/415 Compressor frequency Hz 87 81 88 Piping Branch pipe m Total piping length Indoor unit fan notch Outdoor unit LEV opening Pressure Sectional temp. Indoor unit 259 455 373 194 332 259 455 194 406 280 455 254 Pulse SC (LEV1) - - - 2.82/0.67 2.70/0.65 2.70/0.65 Discharge (TH11) 79 76 76 Heat exchanger outlet (TH5) 1 1 1 0 0 0 0 0 0 Suction (Compressor) 12 1 2 Shell bottom (Compressor) 73 23 27 LEV inlet 38 35 35 Heat exchanger outlet 74 72 72 High pressure(after O/S) /Low pressure(before accumulator) Outdoor Accumulator unit MPa Inlet Outlet ˚C Indoor unit - 91 - Outdoor unit Items Ambient temp. PUHY-P350 PUHY-P400 PUHY-P450 20.0/- 20.0/- 20.0/- 7.0/6.0 7.0/6.0 7.0/6.0 4 4 4 4 4 4 Indoor DB/WB Outdoor Quantity Set Indoor unit Quantity in operation Model – 140 125 63 32 200 100 63 32 200 125 80 50 Condition Main pipe Piping Branch pipe m Total piping length Outdoor unit Pressure 5 5 10 10 10 45 45 45 Indoor unit fan notch – Hi Hi Hi Refrigerant volume kg 14.7 18.2 21.6 Total current A 18.6/17.0 20.9/19.2 23.3/21.4 Volts V 380/415 380/415 380/415 Hz 96 103 50Hz : 83/50 60Hz : 73/60 Compressor frequency (No.1/No.2) LEV opening 5 441 406 Indoor unit 455 254 332 332 455 254 332 406 280 373 Pulse - - - 2.71/0.67 2.43/0.68 2.83/0.69 Discharge (TH11/TH12) 76 71 75/78 Heat exchanger outlet (TH5) 2 2 4 -1 0 1 -1 0 1 Suction (Compressor) 0 -1 1/1 Shell bottom (Compressor) 31 30 23/27 LEV inlet 35 31 38 Heat exchanger outlet 72 67 71 SC (LEV1) High pressure(after O/S) /Low pressure(before accumulator) Outdoor Accumulator unit Sectional temp. MPa Inlet Outlet ˚C Indoor unit - 92 - Outdoor unit Items Ambient temp. PUHY-P500 PUHY-P550 20.0/- 20.0/- 7.0/6.0 7.0/6.0 4 4 4 4 Indoor DB/WB Outdoor Quantity Set Indoor unit Quantity in operation Model – 250 125 100 32 250 140 125 50 Condition Main pipe Piping Branch pipe m Total piping length Outdoor unit Pressure 10 10 45 45 – Hi Hi Refrigerant volume kg 22.1 28.1 Total current A 26.8/24.5 27.6/25.3 Volts V 380/415 380/415 Hz 50Hz : 102/50 60Hz : 84/60 50Hz : 99/50 60Hz : 93/60 Indoor unit 400 406 332 254 400 384 406 Pulse SC (LEV1) - - 2.89/0.68 2.83/0.69 76/81 76/79 4 4 1 1 1 1 1/1 1/1 24/27 26/29 LEV inlet 39 38 Heat exchanger outlet 72 72 High pressure(after O/S) /Low pressure(before accumulator) MPa Discharge (TH11/TH12) Heat exchanger outlet (TH5) Sectional temp. 5 Indoor unit fan notch Compressor frequency (No.1/No.2) LEV opening 5 Outdoor Accumulator unit Inlet Outlet ˚C Suction (Compressor) Shell bottom (Compressor) Indoor unit - 93 - 373 Outdoor unit Items Ambient temp. PUHY-P600 PUHY-P650 20.0/- 20.0/- 7.0/6.0 7.0/6.0 5 5 5 5 Indoor DB/WB Outdoor Quantity Set Indoor unit Quantity in operation Model – 200 200 125 50 25 250 200 125 50 25 Condition Main pipe Piping Branch pipe m Total piping length Outdoor unit Pressure 10 10 55 55 – Hi Hi Refrigerant volume kg 28.3 29.3 Total current A 29.9/27.4 33.4/30.6 Volts V 380/415 380/415 Hz 50Hz : 109/50 60Hz : 105/60 50Hz : 115/50 60Hz : 113/60 Indoor unit 332 332 406 373 229 400 332 406 Pulse SC (LEV1) - - 2.85/0.66 2.86/0.63 79/82 83/85 3 1 0 -1 0 -1 Suction (Compressor) -1/-1 -2/-2 Shell bottom (Compressor) 26/29 29/31 LEV inlet 38 38 Heat exchanger outlet 74 77 High pressure(after O/S) /Low pressure(before accumulator) MPa Discharge (TH11/TH12) Heat exchanger outlet (TH5) Sectional temp. 5 Indoor unit fan notch Compressor frequency (No.1/No.2) LEV opening 5 Outdoor Accumulator unit Inlet Outlet ˚C Indoor unit - 94 - 373 229 ª Troubleshooting [1] Check Code List 1. Check Code List Check code 0403 [01] (Note1) [05] Check content Serial transmission abnormality 0900 Test run (LC) 1102 Discharge temperature abnormality 1301 Low pressure abnormality (OC) 1302 High pressure abnormality (OC) 1500 Overcharged refrigerant abnormality 2500 Leakage (water) abnormality 2502 Drain pump abnormality 2503 Drain sensor abnormality 2600 Water leakage (LC) 2601 Water-supply cut (LC) 4103 Reverse phase abnormality 4108 Over-current protection ( [ P450-P650 model ] No.2 Comp) 4115 Power supply sync signal abnormality 4116 Fan speed abnormality (motor abnormality) (IC, LC) 4121 Harmonic control device abnormality 4220 [108] 4225 [109] Bus Voltage rise abnormality (S/W detect) (Note1) [110] Bus Voltage abnormality (H/W detect) [111] Logic error 4230 4235 (Note1) 4240 4245 Bus Voltage drop abnormality (S/W detect) Heat sink overheat protection Overload protection (Note1) 4250 [101] 4255 [102] ACCT overcurrent abnormality (H/W peak detect) (Note1) [103] DCCT overcurrent abnormality (H/W peak detect) [104] IPM short/grounding abnormality [105] Load short abnormality [106] ACCT overcurrent abnormality (S/W detect peak current) [107] ACCT overcurrent abnormality (S/W detect effective current) 4260 4265 IPM abnormality Cooling fan abnormality (Note1) Air inlet (TH21:IC) 5101 Open-air treatment inlet (TH4:LC) Discharge (TH11, TH12:OC) 5102 Liquid pipe (TH22:IC) Open-air treatment pipe (TH2:LC) 5103 Gas pipe (TH23:IC) Open-air treatment gas pipe (TH3:LC) 5104 Thermal sensor abnormality Open-air treatment open air (TH11) Open-air temperature (TH24) 5105 Liquid pipe (TH5) 5106 Ambient temperature (TH6) 5107 SC coil outlet (TH7) 5108 SC coil bypass outlet (TH8) 5110 [01] (Note1) [05] 5201 [ Heat sink (THHS) High pressure sensor abnormality (OC) ] : Error detail No. - 95 - Check code Check content 5301 [115] ACCT sensor abnormality 5305 [116] DCCT sensor abnormality (Note1) [117] ACCT sensor/circuit abnormality [118] DCCT sensor/circuit abnormality [119] IPM-open/ACCT connection abnormality [120] ACCT miss-wiring abnormality 6600 Multiple address abnormality 6601 Unset polarity 6602 Transmission processor hardware abnormality 6603 Transmission circuit bus-busy abnormality 6606 Communications with transmission processor abnormality 6607 No ACK abnormality 6608 No response abnormality 6831 MA Communication no reception error 6832 MA Communication synchronization recovery error 6833 MA Communication transmission/reception hardware error 6834 MA Communication start bit error 7100 Total capacity abnormality 7101 Capacity code abnormality 7102 Error in the number of connected units 7105 Address setting abnormality 7106 Characteristics setting abnormality (LC) 7110 Connection number setting abnormality 7111 Remote control sensor abnormality 7113 Functional restriction error 7116 System error before flashing operation 7117 Unset model error 7130 Different unit model error (Note1) Compressor inverter and fan inverter are installed in these R410A series. When checking the check code or the 2-digit detail code, refer to the last digit to confirm whether the error code is for the compressor or for the fan. Example) Code 4225 → Bus voltage drop Error for fan inverter system Code 4250 → IPM / bus voltage fault Error for compressor inverter system The last digit Inverter address (system) Potential model 0 or 1 1 Compressor inverter system 5 5 Fan inverter system - 96 - 2. Intermittent fault check code (only for outdoor unit) Preliminary error code Preliminary error content 1202 (1102) Preliminary discharge temperature abnormality or preliminary discharge thermal sensor abnormality (TH11) 1205 (5105) Preliminary liquid pipe temperature sensor abnormality (TH5) 1214 (5110) [00] (Note1) [05] Preliminary THHS sensor/circuit abnormality 1216 (5107) Preliminary sub-cool coil outlet thermal sensor abnormality (TH7) 1217 (5108) Preliminary sub-cool coil bypass outlet thermal sensor abnormality (TH8) 1221 (5106) Preliminary ambient temperature thermal sensor abnormality (TH6) 1402 (1302) Preliminary high pressure abnormality or preliminary pressure sensor abnormality 1600 (1500) Preliminary overcharged refrigerant abnormality 1605 Preliminary suction pressure abnormalit 4158 (4108) Over-current protection ( [ P450-P650 model ] No.2 Comp) 4171 (4121) Harmonic control device abnormality 4300 (0403) [01] (Note1) [05] 4300 (5301) [115] 4305 (5305) [116] Preliminary DCCT sensor abnormality (Note1) [117] Preliminary ACCT sensor/circuit abnormality [118] Preliminary DCCT sensor/circuit abnormality Preliminary serial transmission abnormality Preliminary ACCT sensor abnormality [119] Preliminary IPM-open/ACCT connection abnormality [120] Preliminary ACCT miss-wiring abnormality 4320 (4220) [108] Preliminary bus voltage drop abnormality (S/W detect) 4325 (4225) [109] Preliminary bus voltage rise abnormality (S/W detect) (Note1) [110] Preliminary bus voltage abnormality (H/W detect) [111] Preliminary logic circuit for H/W error detect abnormality 4330 (4230) 4335 (4235) Preliminary heat sink overheating abnormality (Note1) 4340 (4240) 4345 (4245) Preliminary overload abnormality (Note1) 4350 (4250) [101] Preliminary IPM abnormality 4355 (4255) [102] Preliminary ACCT overcurrent abnormality (H/W peak detect) [103] Preliminary DCCT overcurrent abnormality (H/W peak detect) [104] Preliminary IPM short/grounding abnormality [105] Preliminary load short abnormality [106] Preliminary ACCT overcurrent abnormality (S/W detect peak current) [107] Preliminary ACCT overcurrent abnormality (S/W detect effective current) ❉ Please refer to ( ) check code. [ ] : Error code No. (Note1) Compressor inverter and fan inverter are installed in these R410A series. When checking the check code or the 2-digit detail code, refer to the last digit to confirm whether the error code is for the compressor or for the fan. Example) Code 4225 → Bus voltage drop Error for fan inverter system Code 4250 → IPM / bus voltage fault Error for compressor inverter system The last digit Inverter address (system) Potential model 0 or 1 1 Compressor inverter system 5 5 Fan inverter system - 97 - [2] Responding to Error Display on the Remote Controller 1. Mechanical problems Checking code Meaning, detecting method Cause 0403 Serial transmission abnormality Serial transmission failure between the main board and the INV board, and between the main board and the FAN board. Detail code 01: Between the main board and the INV board Detail code 05: Between the main board and the FAN board (1) Defective wiring. Check for wiring between the main board connector CNRS3B and the INV board connector CNRS1 or between the main board connector CNRS3A and the FAN board connector CNRS2 or check for contact the connector. Check for contact of the connector CNAC3 on the main board or of the connector CNTR on the FAN board. (2) Inverter address switches are set wrong. Check the address of SW2-1 on the INV board. Check SW2-1 on the FAN board whether it is ON. (3) Transformer failure. Measure voltages between pins 1 and 3 of the FAN board connector CNTR. (4) Defective INV board. Defective FAN board. Replace the INV board or the FAN board when the power turns on automatically, even if the power is reset. (1) Gas leak, gas shortage. See Refrigerant amount check. (2) Overload operations. Check operating conditions and operation status of indoor/outdoor units. (3) Poor operations of indoor LEV. (4) Poor operations of OC controller LEV1. Check operation status by actually performing cooling or heating operations. Cooling : Indoor LEV (Cooling-only) LEV1 1102 Discharge temperature abnormality (Outdoor unit) 1. When 120˚C or more discharge temperature is detected during operations (the first time), outdoor unit stops once, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 2. When 120 °C or higher discharge is detected again (the second time) within 30 minutes after the first stop of outdoor unit, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 3. When 120˚C or more discharge is detected, again (the third time) within 30 minutes after previous stop of outdoor unit, emergency stop is observed with code No.“1102” displayed. 4. When 120˚C or more discharge is detected 30 or more minutes after previous stop of outdoor unit, the stop is regarded as the first time and the process shown in 1. is observed. 5. 30 minutes after stop of outdoor unit is intermittent fault check period with LED displayed. Checking method & Countermeasure Heating : Indoor LEV (Heating-only) See Trouble check of LEV and solenoid valve. (5) Poor operations of ball valve. Confirm that ball valve is fully opened. (6) Outdoor unit fan block, motor Check outdoor fan. trouble, poor operations of See Trouble check of outdoor fan controller Heating fan. (Heating-only, Heating-main). (3) ~ (6) : Rise in discharge temp. by low pressure drawing. (7) Gas leak between low and high pressures. 4-way valve trouble, compressor trouble, solenoid valve SV1 trouble. Check operation status of cooling-only or heating-only. (8) Thermistor trouble (TH11, TH12). Check resistance of thermistor. (9) Thermistor input circuit trouble on control circuit board. Check inlet temperature of sensor with LED monitor. ✻ For the check code on the inverter, refer to “ 6. Inverter and compressor ” in the section [4] “ Troubleshooting of principal parts ” - 98 - Checking code Meaning, detecting method Cause Checking method & Countermeasure 1301 Low pressure abnoramlity When starting the compressor from Stop Mode for the first time (include the time when starting the compressor for the next time, when starting bound power, ending bound power or when the thermo turns off just after the remote controller is turned on), check the low-pressure sensor beforehand. If the sensor is 0.098MPa, stop the operation immediately after starting. (1) Internal pressure is dropping due to a gas leak. (2) The low pressure pressure sensor is defective. (3) Insulation is torn. (4) A pin is missing in the connector, or there is faulty contact. (5) A wire is disconnected. (6) The control board’s low pressure pressure sensor input circuit is defective. Refer to the item on judging low pressure pressure sensor failure. (1) Poor operations of indoor LEV → Heating Check operations status by actually performing cooling or heating operations. Heating : Indoor LEV 1302 High pressure 1. When pressure sensor abnoramlity 1 detects 3.87MPa or more (Outdoor unit) during operations (the first time), outdoor unit stops once, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 2. When a pressure of 3.87MPa or more is detected again (the second time) within 30 minutes after first stop of outdoor unit, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 3. When 3.87MPa or more pressure is detected again (the third time) within 30 minutes after stop of outdoor unit, error stop is observed with code No. “1302” displayed. 4. When 3.87MPa or more pressure is detected 30 or more minutes after stop of outdoor unit, the detection is regarded as the first time and the process shown in 1. is observed. 5. 30 minutes after stop of outdoor unit is intermittent fault check period with LED displayed. 6. Error stop is observed immediately when pressure switch (4.15 +0 -1.5 MPa) operates in addition to pressure sensor. See Trouble check of LEV and solenoid valve. (2) Poor operations of ball valve. Confirm that ball valve is fully opened. (3) Short cycle of indoor unit. (4) Clogging of indoor unit filter. (5) Fall in air volume caused by dust on indoor unit fan. (6) Dust on indoor unit heat exchanger. (7) Indoor unit fan block, motor trouble. (2)~(7) : Rise in high pressure caused by lowered condensing capacity in heating-only and heating-main operation. Check indoor unit and take measures to trouble. (8) Short cycle of outdoor unit. (9) Dust on outdoor unit heat exchanger. Check outdoor unit and take measures to trouble. (10) Outdoor unit fan block, motor trouble, poor operations of fan controller. (8)~(10) : Rise in high pressure caused by lowered condensing capacity in cooling-only and cooling-main operation. Check outdoor unit fan See Trouble check of outdoor unit fan. (11) Poor operations of solenoid valves SV1 (Bypass valves (SV1) can not control rise in high pressure). See Trouble check of solenoid valve. (12) Thermistor trouble (TH5, TH6). Check resistance of thermistor. (13) Pressure sensor trouble. Check Trouble check of pressure sensor. (14) Control circuit board thermistor trouble, pressure sensor input circuit trouble. Check inlet temperature and pressure of sensor with LED monitor. (15) Thermistor mounting failure (TH5, TH6) (16) No connector for pressure switch (63H), disconnected wire. Check inlet temperature and pressure of sensor with LED monitor. (17) Fuse melting on the control board (F01 or F02). Check whether the fuse melts. Check whether the actuator for the cooling FAN (MF), the 4-way valve or the solenoid valve is not short-circuited and broken. - 99 - Checking code Meaning, detecting method Cause Checking method & Countermeasure 1302 High pressure When pressure sensor detects abnoramlity 2 0.098MPa or less just before (Outdoor unit) starting of operation, error stop is observed with code No.“1302” displayed. (1) Fall in internal pressure caused by gas leak. (2) Pressure sensor trouble. (3) Film breakage. (4) Coming off of pin in connector portion, poor contact. (5) Broken wire. (6) Pressure sensor input circuit trouble on control circuit board. See Trouble check of pressure sensor. 1500 Overcharged refrigerant abnormality (1) Excessive refrigerant charge. Refer to the section on judging the refrigerant volume. (2) Main circuit board thermistor input circuit trouble. Check the sensor detection temperature and pressure with the LED monitor. 1. If the discharge SH 10K is detected during operation (at first detection), the outdoor unit stops at once. The 3 minutes restart prevention mode is entered. After three minutes, the outdoor unit starts up again. (3) Thermistor mounting trouble (TH11, TH12). 2. If the discharge SH 10K is detected again within 30 minutes after the outdoor unit stops (second detection), an abnormal stop is applied, and “1500” is displayed. 3. If discharge SH 10K is detected more than 30 minutes after the outdoor unit stops, the state is the same as the first detection and the same operation as 1. above takes place. 4. The abnormal stop delay period is in effect for 30 minutes after the outdoor unit stops. The abnormal stop delay period LED turns ON during this time. 2500 Leakage (water) abnormality When drain sensor detects flooding during drain pump OFF. (1) Water leak due to humidifier or the like in trouble. - 100 - Check water leaking of humidifier and clogging of drain pan. Checking code Meaning, detecting method 2502 Drain pump When drain sensor detects abnormality flooding during drain pump ON. (This error occurs only for the applied indoor units.) Cause (1) Drain pump malfunction (2) Clogged drain pump intake (3) Clogged drain pipe (4) Return water from drain pipe (installation defect) Checking method & Countermeasure (1) Check the drain pump malfunction 1Check whether there is water in the drain pan. When the water level is approximately 10mm from the bottom of the drain pan, the drain pump may be normal. 2Check whether the drain pump operates properly. Whether the resistance of the drain pump is normal or the drain pump operates when the power supply is applied. (2) Check the clogged drain pump intake. Check whether there is no dust around the drain pump intake. (3) Check the clogged drain pipe. Check whether there is no clogging outside of the pipe body. (4) Check the return water. Pour approximately 1-liter water in the drain pump, and start the drain pump. When the water level in the drain pan becomes stably lower, stop the pump, and check the amount of the return water to the drain pan. ✻When a large amount of water returns, the gradient of drain pipe may be the reason. Check whether the drain pipe is installed properly as the instruction in the installation manual says. Furthermore, check whether the gradient of the unit installation is horizontal. Error may be detected because of the return water depending on the gradient. (Gradient approximately 0.5˚) After checking the above, when all normal, misdetection of the drain sensor is possible. 1Check the drain sensor. · Check the resistance value. <Error release method> Reset (error reset) the applied indoor unit with the remote controller. - 101 - Checking code Meaning, detecting method 2502 Drain pump abnormality (This error occurs for all the indoor units in the same refrigerant system.) When drain sensor detects flooding during drain pump ON in the stopped indoor unit. 2503 Drain sensor abnormality When short circuit or open circuit is detected during operation (cannot be detected during OFF). Short circuit: detected 90˚C or more Open circuit: detected –20˚C or less Cause Checking method & Countermeasure (1) Drain pump malfunction Refer to the previous page. (2) Clogged drain pump intake <Error release method> Reset the power of the applied indoor unit. However, the reset (error reset) using the remote controller can be done in 10 minutes after the power has been reset. Furthermore, the reset using the remote controller is required for all the indoor units. (3) Clogged drain pipe (4) Return water from drain pipe (installation defect) (1) Thermistor failure (2) Connector contact failure (Insert failure) (3) Disconnected wire or partial disconnected wire for thermistor Thermistor resistance check 0˚C : 6.0kΩ 10˚C : 3.9kΩ 20˚C : 2.6kΩ 30˚C : 1.8kΩ 40˚C : 1.3kΩ (4) Indoor board (detection circuit) failure Connector contact failure If no fault is found, indoor board is faulty. 2600 Water leakage – Water leaks from the pipes in such as the humidifier. Check the place from where the water leaks. 2601 Water-supply cut – (1) Water is not supplied into the humidification feed tank. Check the amount of supply water. Check the solenoid valve or connection. (2) The solenoid valve for humidification is OFF. Check the connector. (3) Float switch disconnection. Check the connecting part. (4) Float switch malfunction. Check the defective float switch. (5) Freeze on the feed tank. Defrost by turning the power off and turn the power on again. - 102 - Checking code 4103 Reverse phase abnormality Meaning, detecting method Cause 1. The operation cannot be started because of the reserve phase of one of the power lines (L1, L2 or L3). (1) Faulty wiring 2. When turning on the power, the operation cannot be started because of the open phase of one of the power lines (L1 or L2). 4108 Over-current protection 1. First detection If 51C2 is started during the operation of No.2 compressor, the outdoor unit stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes. (Set value of the over-current relay: 55A) 2. Second detection If 51C2 is started again within a minute after restarting in compliance with 1. above, the unit makes an error stop and the error code “4108” will appear. Checking method & Countermeasure · Check whether the phase of the power supply terminal block (TB1) is normal. · Check the wiring between the power supply terminal block (TB1) and the main boards (CN20 and CN21). TB1 Pin L1 CN20 5 Pin N CN21 3 Pin L2 CN21 1 Pin (2) Main board failure If the above faults are not found, the main board is faulty. (1) Power supply failure a) Open phase of power supply voltage b) Power supply voltage drop Check the input resistance of the power supply terminal block (TB1). (2) Faulty wiring Between the power supply terminal block (TB1) and the main boards (CN20 and 21) · Check the voltage of No.5 pin of the main board connector (CN20) and the voltage between No.1 and 3 pin of CN21. · If the voltage is not the same as the power supply voltage, the wiring is faulty. (3) Blown fuse Check whether the fuses of the main board (both F01 and F02) are not blown. (4) Main board failure If the above faults are not found, the main board is faulty. (1) Overload operation that exceeds unit use limit Check the unit working condition. (2) Power supply error a) Power-supply voltage drop b) Power-supply voltage open phase Check the voltage of the powersupply terminal block (TB1). Check for open phase. (3) Wiring defect Check 52C2 connector and the wiring. (4) Compressor malfunction a) Compressor open phase, grounding fault b) Compressor lock Check the wiring and apply a megger to the compressor. Start operation under no-load conditions. Remove the power wire on the compressor-side, insulate the power line and start operation. → The compressor is faulty if 52C2 normally turns on. 3. There will be a minute grace period of an error stop when No.2 compressor restarts after the outdoor unit stops and LED indicates, which means the grace period, will appear. - 103 - Checking code Meaning, detecting method 4115 Power supply sync signal abnormality The frequency cannot be determined when the power is switched on. (The power supply’s frequency cannot be detected. The outdoor fan cannot be controlled by phase control.) 4116 Fan speed abnormality (motor abnormality) 4220 Bus voltage 4225 drop abnormality (Error details No.108) Cause Checking method & Countermeasure (1) There is an open phase in the power supply. Check before the breaker, after the breaker or at the power supply terminal blocks TB1, and if there is an open phase, correct the connections. (2) A fuse is defective. If F01 or F02 on the MAIN board is melted, (Resistance between both ends of the fuse is ∞), replace the fuses. (3) Faulty wiring. Check voltage between the pin-5 on the main board connector (CN20), between the pin-1 and the pin-3 on CN21. When the voltage is not the same as the power source voltage (380-415V), the wiring is faulty. (4) The circuit board is defective. If none of the items in (1) to (3) is applicable, and if the trouble reappears even after the power is switched on again, replace the MAIN board (when replacing the circuit board, be sure to connect all the connectors, ground wires, etc. securely). [ LOSSNAY ] 1. The motor keep running even if the power is OFF. 2. The thermal overload relay is ON. (Only for the three-phase model) [ Indoor unit ] If detected less than 180rpm or more than 2000rpm, the indoor unit will restart and keep running for 3 minutes. If detected again, the display will appear. (1) Defective board. Replace the board. (2) Motor malfunction. Check for the motor and the solenoid switch. If Vdc 289V is detected during operation. (Software detection) (1) Power environment. Check whether the unit makes an instantaneous stop when the detection result is abnormal or a power failure occurs. Check whether the power voltage 342V across all phases. (2) Voltage drop detected. <In the case of 4220> Check the voltage of the connector (CNDC2) on the INV board. → Replace the INV board when there is no voltage drop. → Check the followings when there is a voltage drop. 1Check the voltage of CN52C on the main board → Refer to (3) 2Check whether 52C1 works normally → Refer to (4) Or check 52C1-connecting piping. 3Check for the diode stack → Refer to (5) 4Check for the wiring and the connectors between the CNDC2 on the INV board and the CNDC1 on the G/A board. Replace G/A board when no fault is found for the above 1~4. (3) Solenoid switch malfunction. - 104 - Checking code Meaning, detecting method 4220 Bus voltage 4225 drop abnormality (Error details No.108) If Vdc 289V is detected during operation. (Software detection) Cause Checking method & Countermeasure (2) Voltage drop detected. <In the case of 4225> Check the followings 1Check the voltage of CN52C on the main board → Refer to (3). 2Check whether 52C1 works normally → Refer to (4) Or check 52C1-connecting piping. 3Check for the diode stack → Refer to (5) 4Check for the wiring and the connectors of the CNVDC on the FAN board. Replace FAN board when no fault is found for the above 1~4. (3) Main board failure. Check whether AC220~240V is applied to the connector (CN52C) during inverter operation. → If not applied, check the main board and the fuse (F01 and F02). Replace the main board when no fault is found. (4) 52C1 failure. Refer to 9.[4].6.(2) Check the coil resistance check. (5) Diode stack failure. Refer to 9.[4].6.(2) Check the diode stack resistance. (1) Different voltage connection. Check the voltage of the powersupply terminal block (TB1). (2) INV board failure. Replace INV board if no fault is found. In the case of 4220: INV board In the case of 4225: FAN board Bus voltage rise abnormality (Error details No.109) If Vdc 817V is detected during inverter operation. Bus Voltage abnormality (Error details No.110) Bus voltage abnormality If Vdc 772V or Vdc 308V is detected. (H/W detection) (1) Same as detail code No.108 and 109 of 4220 error. Same as detail code No.108 and 109 of 4220 error. Logic error (Error details No.111) If only the H/W error logic circuit operates, and no identifiable error is detected. <In the case of 4220> (1) External noise. (2) INV board failure. (3) G/A board failure. (4) IPM failure. (5) DCC failure. Refer to 9.[4].6.(2).[5] Replace G/A board. Refer to 9.[4].6.(2).[1] Replace DCCT. <In the case of 4225> (1) External noise. (2) FAN board failure. Refer to 9.[4].6.(2).[7] <In the case of 4230> When the heat sink temperature (THHS1) 95˚C is detected. (1) Power supply environment. Check the power supply voltage. Ensure that the power supply voltage 342V across all phases. <In the case of 4235> When the heat sink temperature (THHS5) 85˚C is detected. (2) Air passage blockage. Check to make sure the air passage of the heat sink cooling is not blocked. (3) Wiring defect. Check the cooling fan wiring. (4) THHS failure. Check the THHS sensor resistance. (5) INV board fan output failure. Ensure that the heat sink temperature is 55˚C or more and that 220~240V is applied to the inverter PCB connector CNFAN when the inverter is on. (6) Cooling fan failure. Check the cooling fan operation under the above operating conditions. (7) IPM failure. Refer to 9.[4].6.(2) “Check for compressor ground fault or coil error” [5] “Check the inverter circuit trouble” 4230 Heat sink 4235 overheat protection ✻ For the check code on the inverter, refer to “ 6. Inverter and compressor ” in the section [4] “ Troubleshooting of principal parts ” - 105 - Checking code 4240 Overload 4245 abnormality Meaning, detecting method Cause (1) Air passage short cycle. When the output current (lac) > Imax (Arms) or THHS > 90˚C is detected for 10 minutes in a row during the inverter operation. (2) Air passage blockage. Checking method & Countermeasure Ensure that a short cycle has not occurred at the unit fan exhaust. Check to make sure the air passage of the heat sink cooling is not blocked. Imax 4250 IPM 4255 abnomality (Error details No.101) ACCT overcurrent abnormality (Error details No.102) DCCT overcurrent abnormality (Error details No.103) ACCT overcurrent abnormality (Error details No.106, 107) Type P200 27 Arms Type P250 27 Arms Type P300 27 Arms Type P350 27 Arms Type P400 27 Arms Type P450 27 Arms Type P500 27 Arms Type P550 27 Arms Type P600 27 Arms Type P650 27 Arms IPM error signal detected Overcurrent break (94Apeak or 35Arms) detected by the current sensor. IPM short damage or grounding IPM short/grounding at the load side detected just before starting the inverter. fault (Error details No.104) (3) Power supply. Check if the power supply voltage 342V. (4) Wiring defect. Check the cooling fan wiring. (5) THHS failure. Check the THHS sensor resistance. (6) INV board fan output failure. Ensure that the heat sink temperature is 55˚C or more and that 220~240V is applied to the inverter PCB connector CNFAN when the inverter is on. (7) Cooling fan failure. Check the cooling fan operation under the above operating conditions. (8) Current sensor (ACCT) failure. Refer to 9.[4].6.(4) “Current sensor ACCT” (9) Inverter circuit failure. Refer to 9.[4].6.(2).[4] “Inverter damage check” (10) Compressor failure. Check that the compressor has not overheated during operation. → Check the refrigerant circuit (oil return section). Replace the compressor if there are no problems with the refrigerant circuit. <In the case of 4250> (1) Inverter output related. (2) Same as 4230 error. Same as 4230 error <In the case of 4255> (1) Grounding fault of fan motor. (2) FAN board failure. Refer to 9.[4].6.(2).[6] Refer to 9.[4].6.(2).[7] (1) Inverter output related. 9.[4].6.(2) inverter output related trouble processing Refer to [1] - [5]. <In the case of 4250> (1) Grounding fault of compressor. (2) Inverter output related. Refer to 9.[4].6.(2) <In the case of 4255> (1) Grounding fault of fan motor. (2) FAN board failure. Refer to 9.[4].6.(2).[6] Refer to 9.[4].6.(2).[7] ✻ For the check code on the inverter, refer to “ 6. Inverter and compressor ” in the section [4] “ Troubleshooting of principal parts ” - 106 - Checking code Meaning, detecting method 4250 Load short 4255 abnormality (Error details 105) Shorting at the load (compressor) side detected just before starting the inverter. 4260 Cooling fan 4265 abnormality Cause <In the case of 4260> When the heat sink temperature (THHS1) 95˚C for 10 minutes or longer after the inverter starts. Checking method & Countermeasure <In the case of 4250> (1) Shorting of compressor (2) Output wiring (3) Power supply Refer to 9.[4].6.(2).[2] <In the case of 4255> (1) Shorting of fan motor (2) Output wiring (3) Power supply Refer to 9.[4].6.(2).[6] Same as 4230 error Same as 4230 error (1) Thermistor failure (2) Contact failure of the connector (3) Thermistor wire disconnection or partial disconnection (4) Thermosensor is not set up or contact failure Themistor resistance check 0˚C : 15kΩ 10˚C : 9.7kΩ 20˚C : 6.4kΩ 30˚C : 4.3kΩ 40˚C : 3.1kΩ (5) Indoor board failure (detection circuit) Check the contact of the connector If no fault is found, the indoor board is a failure. <In the case of 4265> When the heat sink temperature (THHS5) 85˚C for 10 minutes or longer after the inverter starts. Air inlet 5103 5104 5104 (Outdoor air processing unit) 5102 Themal sensor error (Indoor unit) 5101 Liquid pipe Gas pipe Outdoor air temperature Outdoor air temperature When shorting or open of the sensor is detected while the thermo is ON, the restart prevention mode will be operated for 3 minutes. If there is no recovery after 3 minutes, the unit will make an error stop. (If there is a recovery, the unit will run normally.) Shorting: detectable at 90˚C or higher Open : detectable at –40˚C or lower ✻Sensor error at gas-side cannot be detected under the following conditions. · During heating operation · During cooling operation for 3 minutes after the compressor turns on. – Check the contact of the (1) The connection of the connector (CN29) is a failure. connector (2) The outdoor sir processing Replace the sensor. unit is out of order. ✻ For the check code on the inverter, refer to “ 6. Inverter and compressor ” in the section [4] “ Troubleshooting of principal parts ” - 107 - Checking code 5101 5105 5107 5108 Temperature sensor abnormality (Outdoor unit) 5106 Meaning, detecting method Cause Discharge 1. Shorting (high temperature (TH11) intake) or open (low (TH12) temperature intake) of the thermistor is detected. (First Piping detection) (TH5) The outdoor unit will stop at once and the restart prevention mode will be Outdoor operated for 3 minutes. When air the detection temperature of temperathe thermistor is within the ture normal range just before the (TH6) restart, the unit must be restarted. 2. When shorting or open is Liquid detected again (second temperadetection) during the ture operation after the restart, the (TH7) outdoor unit will stop at once and the restart prevention mode will be operated for 3 SC coil minutes. When the detection outlet temperature of the thermistor (TH8) is within the normal range just before the restart, the unit must be restarted. 3. When shorting or open is detected again (third detection) during the operation after the restart, the outdoor unit will make an error stop. 4. When shorting or open of the thermistor is detected just before the restart, the unit will make an error stop and check code “5101”, “5103”, “5104”, “5105”, “5106”, “5107”, and “5108” will appear. 5. LED display, which indicates the grace period, will appear while the restart prevention mode is being operated. 6. Shorting or open is not detected for 10 minutes after starting the compressor or for 3 minutes during or after defrosting. 5110 Radiator panel temperature sensor abnormality Error details 01: Compressor INV side THHS open or shorting is detected just before starting the inverter or during operation. Checking method & Countermeasure (1) Thermistor failure Thermistor resistance check (2) Pinched lead wire Check for lead wire. (3) Coating tear Check for coating. (4) No pin on the connector, contact failure Check for connector. (5) Disconnected wire Check for wire. (6) Thermistor input circuit failure on the main board Check the intake temperature of the sensor with the LED monitor. When the temperature is far different from the actual temperature, replace the control board. Shorting detection TH11 240˚C or higher (0.57kΩ) TH12 240˚C or higher (0.57kΩ) TH5 110˚C or higher (0.4kΩ) TH6 110˚C or higher (0.4kΩ) TH7 70˚C or higher (1.14kΩ) TH8 70˚C or higher (0.4kΩ) Open detection 0˚C or lower (643kΩ) 0˚C or lower (643kΩ) -40˚C or lower (130kΩ) -40˚C or lower (130kΩ) -40˚C or lower (130kΩ) -40˚C or lower (130kΩ) (1) THHS sensor failure Check for short circuit in THHS sensor. (2) Contact failure Replace THHS sensor. (3) INV board failure of the compressor or the fan Replace INV board of the compressor or the fan. Error details 05: Fan INV side ✻ For the check code on the inverter, refer to “ 6. Inverter and compressor ” in the section [4] “ Troubleshooting of principal parts ” - 108 - Checking code Meaning, detecting method Cause 5201 High pressure sensor abnormality (outdoor unit) 1. When pressure sensor detects 0.098MPa or less during operation, outdoor unit once stops with 3 minutes restarting mode, and restarts if the detected pressure of pressure sensor exceeds 0.098MPa immediately before restarting. 2. If the detected pressure of sensor is less than 0.098MPa immediately before restarting, error stop is commenced displaying 5201. (1) Pressure sensor trouble. Checking method & Countermeasure See Troubleshooting of pressure sensor. (2) Inner pressure drop due to a leakage. (3) Broken cover. (4) Coming off of pin at connector portion, poor contact. (5) Broken wire. (6) Faulty thermistor input circuit of MAIN board. 3. Under 3 minutes restarting mode, LED displays intermittent fault check. 4. During 3 minutes after compressor start, defrosting and 3 minutes after defrosting operations, trouble detection is ignored. 5301 ACCT sensor 5305 abnormality (Error details No.115) DCCT sensor abnormality (Error details No.118) ✻ Other than P200 model -1.5Arms output current's effective value 1.5Arms was detected during inverter operation. An abnormal value is detected in the DCCT detection circuit just before the INV started. ACCT sensor/circuit abnormality (Error details No.117) An abnormal value was detected with the ACCT detection circuit just before the INV started. DCCT sensor/circuit abnormality (Error details No.116) ✻ Other than P200 model An abnormal value was detected with the DCCT detection circuit just before the INV started. (1) Contact is faulty. Check the INV board CNCT2 (ACCT) contact, CNDR2 and G/A Board CNDR1. (2) ACCT sensor is faulty. Replace the ACCT sensor (1) Contact is faulty. Check the connector connection on the INV board CNCT (DCCT), DCCT side. (2) DCCT sensor incorrectly installed. Check DCCT installation direction (3) DCCT sensor is faulty. Replace the DCCT sensor (4) INV board fault. Replace the INV board (1) INV board fault. Refer to 9.[4].6.(2).[1] “Check the INV board error detection circuit” (2) Compressor ground fault and IPM fault. Refer to 9.[4].6.(2).[2] “Check for compressor ground fault or coil error.” Refer to 9.[4].6.(2).[5] “Check the inverter circuit trouble”. (1) Contact is faulty. Check the contacts around the INV board connector CNCT and DCCT side connector. (2) INV board fault. Refer to 9.[4].6.(2).[1] “Check the INV board error detection circuit”. (3) DCCT sensor is faulty. If there is no problem up to step (2), replace DCCT and check the DCCT polarity. (4) Compressor ground fault and IPM fault. Refer to 9.[4].6.(2).[2] “Check for compressor ground fault or coil error.” Refer to 9.[4].6.(2).[5] “Check the inverter circuit trouble”. ✻ For the check code on the inverter, refer to “ 6. Inverter and compressor ” in the section [4] “ Troubleshooting of principal parts ” - 109 - Checking code 5301 IPM5305 open/ACCT connection abnormality (Error details No.119) ACCT miss-wiring abnormality (Error details No.120) Meaning, detecting method IPM open damage or CNCT2 dislocation was detected just before INV started. (Sufficient current was not detected during self-diagnosis just before starting.) Improper installation of the ACCT sensor was detected. Cause Checking method & Countermeasure (1) ACCT sensor is dislocated Check CNCT2 sensor connection (Check ACCT installation state) (2) Wire connection is faulty. Check CNDR2 connection on INV board, or CNDR1 connection on G/A board (3) ACCT is faulty. Refer to 9.[4].6.(4) “Current sensor ACCT” resistance value (4) Compressor is disconnected Refer to 9.[4].6.(2).[2] “Check for compressor ground fault or coil error”. (5) Inverter circuit is faulty. Refer to 9.[4].6.(2).[5] “Check the inverter circuit trouble”. (1) ACCT sensor incorrectly installed. Refer to 9.[4].6.(4) “Current sensor ACCT”. ✻ For the check code on the inverter, refer to “ 6. Inverter and compressor ” in the section [4] “ Troubleshooting of principal parts ” ACCT-W →IPM-output phase U Red wire ←Compressor-input phase W W ←Compressor-input phase U U ACCT-U →IPM-output phase W Black wire 2. Communication/system errors Checking code 6600 Meaning, detecting method Multiple address abnormality Transmission from units with the same address is detected. Note: The address/attribute shown on remote controller indicates the controller which has detected error. 6601 Unset polarity The error detected when transmission processor cannot distinguish the polarities of the M-NET transmission line. Cause Checking method & Countermeasure (1) Two or more controllers of outdoor unit, indoor unit, remote controller, etc. have the same address. Search for the unit which has the same address with that of the source of the trouble. <Example> Error display of the remote controller 6600 “01” Unit No.1 detected the error Two Units No.1 or more are in a same system. (1) No voltage is applied to the M-NET transmission line that G-50A is connected to. (2) M-NET transmission line to which G-50A is connected is short-circuited. - 110 - When the same address is found, turn off the power source of outdoor unit, and indoor unit for 5 minutes or more after modifying the address, and then turn on it again. Check if power is supplied to the MNET transmission line of the G-50A, and correct any problem found. Checking code Meaning, detecting method 6602 Transmission processor hardware abnormality Though transmission processor intends to transmit “0”, “1” is displayed on transmission line. Note: The address/attribute shown on remote controller indicates the controller which has detected error. Cause Checking method & Countermeasure (1) At the collision of mutual transmission data generated during the wiring work or polarity change of the transmission line of indoor or outdoor unit while turning the power source on, the wave shape is changed and the error is detected. (2) Ground fault of transmission line. (3) Insertion of power supply connector (CN40) of plural outdoor units at the grouping of plural refrigerant systems. (4) Insertion of power supply connector (CN40) of plural outdoor units in the connection system with MELANS. (5) When using the power supply unit for transmission line in the connected system with MELANS, the power supply connector (CN40) of the outdoor unit is inserted into the transmission line. (6) Faulty controller of unit in trouble. (7) Change of transmission data due to the noise in transmission. (8) Connection system with plural refrigerant systems or MELANS for which voltage is not applied on the transmission line for central control. Checking method and processing Transmission line installed while turning power source on? YES Shut off the power source of outdoor/ indoor units and make it again NO Check power source of indoor unit. 220V ~ 240V ? NO Erroneous power source work YES Erroneous transmission work YES Check transmission line work and shield Ground fault or shield contacted with transmission line? NO System composition? Plural refrigerant system Single refrigerant system Confirm supply power connector CN40 of outdoor unit YES Only 1 set with CN40 inserted? System with the power supply unit for transmission line Confirm supply power connector CN40 of outdoor unit NO CN40 inserted? NO YES Modification of CN40 insertion method. Investigation of transmission line noise Noise exist? Replace insertion of CN40 to CN41 ✻ For the investigation method, follow <Investigation method of transmission wave shape/noise> YES Investigation of the cause of noise NO Faulty controller of generating unit Modification of faulty point 6603 Transmission circuit bus-busy abnormality 1. Collision of data transmission: Transmission can not be performed for 4~10 consecutive minutes due to collision of data transmission. (1) As the voltage of short frequency like noise is mixed in transmission line continuously, transmission processor can not transmit. (2) Faulty controller of generating unit. 2. Data can not be transmitted on transmission line due to noise for 4~10 consecutive minutes. Note: The address/attribute shown on remote controller indicates the controller which has detected error. - 111 - (a) Check transmission wave shape/noise on trans-mission line by following <Investigation method of transmission wave shape/noise>. →No noise indicates faulty controller of generating unit. →Noise if existed, check the noise. Checking code Meaning, detecting method 6606 Communications with transmission processor abnormality Communication trouble between apparatus processor and transmission processor. Cause (1) Data is not properly transmitted due to casual erroneous operation of the generating controller. (2) Faulty generating controller. Note: The address/attribute shown on remote controller indicates the controller which has detected error. Checking code 6607 Checking method & Countermeasure Turn off power sources of indoor unit, and outdoor unit. When power sources are turned off separately, microcomputer is not reset and normal operations can not be restored. →Controller trouble is the source of the trouble when the same trouble is observed again. Meaning, detecting method No ACK abnormality When no ACK signal is detected in 6 continuous times with 30 seconds interval by transmission side controller, the transmission side detects error. Note : The address/attribute shown on remote controller indicates the controller not providing the answer (ACK). System Generating Display of comunit trouble position address (1) Single refrigerant system 1. Outdoor unit(OC) Remote controller (RC) Detecting method No reply (ACK) at BC transmission to OC Cause (1) Poor contact of transmission line of OC or BC. (2) Damping of transmission line voltage/signal by acceptable range of transmission wiring exceeded. Farthest: Less than 200m Remote controller wiring: Less than 10m Cause checking method & Countermeasure Shut down OC unit power source, and make it again. It will return to normal state at an accidental case. When normal state can not be recovered,check for the (1) ~ (4) of the cause. (3) Erroneous sizing of transmission line (Not within the range below). Wire diameter: 1.25mm2 or more (4) Faulty control circuit board of OC. 2. Indoor unit (IC) Remote controller (RC) No reply (ACK) at RC transmission to IC (1) When IC unit address is changed or modified during operation. (2) Faulty or disconnection of transmission wiring of IC. (3) Disconnection of IC unit connector (CN2M). (4) Faulty IC unit controller. (5) Faulty remote controller. Shut down both OC power source for 5 minutes or more, and make them again. It will return to normal state at an accidental case. When normal state can not be recovered, check for the (1) ~ (4) of the cause. 3. Remote controller (RC) Remote controller (RC) No reply (ACK) at IC transmission to RC (1) Faulty transmission wiring at IC unit side. (2) Faulty transmission wiring of RC. (3) When remote controller address is changed or modified during operation. (4) Faulty remote controller. Shut down OC power sources for 5 minutes or more, and make it again. It will return to normal state at an accidental case. When normal state can not be recovered, check for the (1) ~ (4) of the cause. - 112 - Checking code Meaning, detecting method No ACK abnormality 6607 (continued) When no ACK signal is detected in 6 continuous times with 30 seconds interval by transmission side controller, the transmission side detects error. Note : The address/attribute shown on remote controller indicates the controller not providing the answer (ACK). (2) Group operation system using plural refrigerants System Generating Display of comunit trouble position address Detecting method Cause Cause checking method & Countermeasure 1. Outdoor unit(OC) Remote controller (RC) No reply (ACK) at BC transmission to OC As same that for single refrigerant system. Same as measure for single refrigerant system. 2. Indoor unit (IC) Remote controller (RC) No reply (ACK) at RC transmission to IC (1) Cause of (1) ~ (5) of “Cause for single refrigerant system”. (2) Disconnection or short circuit of transmission line of OC terminal block for centralized control (TB7). (3) Shut down of OC unit power source of one refrigerant system. (4) Neglecting insertion of OC unit power supply connector (CN40). (5) Inserting more than 2 sets of power supply connector (CN40) for centralized control use. For generation after normal operation conducted once, the following causes can be considered. • Total capacity error (7100) • Capacity code setting error (7101) • Connecting set number error (7102) • Address setting error (7105) (a) Shut down the power source of both IC and OC for over 5 minutes simultaneously, and make them again. Normal state will be returned in case of accidental trouble. (b) Check for (1) ~ (5) of causes. If cause is found, remedy it. (c) Check other remote controller or OC unit LED for troubleshooting for trouble. (1) Cause of (1) ~ (3) of “Cause for single refrigerant system”. (2) Disconnection or short circuit of transmission line of OC terminal block for centralized control (TB7). (3) Shut down of OC unit power source of one refrigerant system. (4) Neglecting insertion of OC unit power supply connector (CN40). (5) Inserting more than 2 sets of power supply connector (CN40) for centralized control use. At generation after normal operation conducted once, the following causes can be considered. • Total capacity error (7100) • Capacity code setting error (7101) • Connecting set number error (7102) • Address setting error (7105) (a) Shut down the power source of OC for over 5 minute, and make it again. Normal state will be returned in case of accidental trouble. (b) Check for (1) ~ (5) of causes. If cause is found, remedy it. When normal state can not be obtained, check (1) ~ (5) of causes. 3. Remote controller (RC) Remote controller (RC) No reply (ACK) at IC transmission to RC - 113 - →Modify the trouble according to the content of check code. No trouble →Faulty indoor controller Trouble Checking code Meaning, detecting method No ACK abnormality 6607 (continued) When no ACK signal is detected in 6 continuous times with 30 seconds interval by transmission side controller, the transmission side detects error. Note : The address/attribute shown on remote controller indicates the controller not providing the answer (ACK). (3) Connecting system with controller (MELANS) System Generating Display of comunit trouble position address Detecting method Cause Cause checking method & Countermeasure 1. Outdoor unit(OC) Remote controller (RC) No reply (ACK) at BC transmission to OC As same that for single refrigerant system. Same countermeasure as that for single refrigerant system. 2. Indoor unit (IC) Remote controller (RC) No reply (ACK) at transmission of SC to IC Trouble of partial IC units : (1) Same cause as that for single refrigerant system. →Same countermeasure as that for single refrigerant system. Trouble of all IC in one refrigerant system: (1) Cause of total capacity error. (7100) (2) Cause of capacity code setting error. (7101) (3) Cause of connecting number error. (7102) (4) Cause of address setting error. (7105) (5) Disconnection or short circuit of transmission line of OC unit terminal block for central control (TB7). (6) Power source shut down of OC unit. (7) Trouble of OC unit electrical system. Confirm OC trouble diagnosis LED. →At trouble generation, check for the content according to check code. Check the content of (5) ~ (7) shown left. Trouble of all IC: (1) As same that for single refrigerant system. (2) When using the power supply unit for transmission line, the power supply connector (CN40) is inserted into the transmission line for centralized control. (3) Disconnection or power source shut down of power supply unit for transmission line. (4) Faulty system controller (MELANS). Confirm voltage of transmission line for centralized control. • More than 20V → Confirm (1) (2) left. • Less than 20V → Confirm (3) left. - 114 - Checking code Meaning, detecting method No ACK abnormality 6607 (continued) When no ACK signal is detected in 6 continuous times with 30 seconds interval by transmission side controller, the transmission side detects error. Note : The address/attribute shown on remote controller indicates the controller not providing the answer (ACK). System Generating Display of comunit trouble position address (3) Connecting system with controller (MELANS) 3. Remote controller (RC) Remote controller (RC) Detecting method Cause Cause checking method & Countermeasure No reply (ACK) at transmission of IC to RC Same cause as that for plural refrigerant system. Same countermeasure as that for plural refrigerant system. No reply (ACK) at transmission of MELANS to RC Trouble of partial IC units: (1) Same cause of that for single refrigerant system. →Same countermeasure as that for single refrigerant system. Trouble of all IC in one refrigerant system: (1) Error detected by OC unit. Total capacity error. (7100) Capacity code setting error. (7101) Connecting number error. (7102) Address setting error. (7105) (2) Disconnection or short circuit of transmission line of OC unit terminal block for central control (TB7). (3) Power source shut down of OC unit. (4) Trouble of OC unit electrical system. Confirm OC trouble diagnosis LED. →At trouble generation, check for the content according to check code. Trouble of all IC: (1) As same that for single refrigerant system. (2) When using the power supply unit for transmission line, the power supply connector (CN40) is inserted into the transmission line for centralized control. (3) Disconnection or power shutdown of power supply unit for transmission line. (4) Faulty MELANS. Check the causes of (1) ~ (4) left. - 115 - Check the content of (2) ~ (4) shown left. Checking code Meaning, detecting method No ACK abnormality 6607 (continued) When no ACK signal is detected in 6 continuous times with 30 seconds interval by transmission side controller, the transmission side detects error. Note : The address/attribute shown on remote controller indicates the controller not providing the answer (ACK). System Generating Display of comunit trouble position address (3) Connecting system with controller (MELANS) 4. System controller (SC) Remote controller (RC) Cause checking method & Countermeasure Detecting method Cause No reply (ACK) at transmission of IC to SC Trouble of partial remote controller: (1) Faulty wiring of RC transmission line. (2) Disconnection or poor contact of RC transmission connector. (3) Faulty RC. Check the causes of (1) ~ (3) left. Trouble of all IC in one refrigerant system. (1) Error detected by OC unit. Total capacity error (7100) Capacity code setting error (7101) Connecting number error (7102) Address setting error (7105) (2) Disconnection or short circuit of transmission line of OC unit terminal block for central control (TB7). (3) Power source shut down of OC unit. (4) Trouble of OC unit electrical system. Confirm OC trouble diagnosis LED. →At trouble generation, check for the content according to check code. Check the content of (2) ~ (4) shown left. Trouble of all RC: (1) As same that for single refrigerant system. (2) When using the power supply unit for transmission line, the power supply connector (CN40) is inserted into the transmission line for centralized control. (3) Disconnection or power shutdown of power supply unit for transmission line. (4) Faulty MELANS. Check the causes (1) ~ (4) left. - 116 - Checking code Meaning, detecting method No ACK abnormality 6607 (continued) When no ACK signal is detected in 6 continuous times with 30 seconds interval by transmission side controller, the transmission side detects error. Note : The address/attribute shown on remote controller indicates the controller not providing the answer (ACK). System Generating Display of comunit trouble position address – – No relation with system Address which should not be existed Detecting method Checking code 6608 Cause (1) IC unit is keeping the memory of the original group setting with RC although the RC address was changed later. The same symptom will appear for the registration with SC. (2) IC unit is keeping the memory of the original interlocking registration with Fresh Master with RC although the Fresh Master address was changed later. Cause checking method & Countermeasure As some IC units are keeping the memory of the address not existing, delete the information. Employ one of the deleting method among two below. (1) Deletion by remote controller. Delete unnecessary information by the manual setting function of remote controller. (2) Deletion by connecting information deleting switch of OC unit. Be careful that the use of this method will delete all the group information set with RC and all the interlocking information of Fresh Master and IC unit. (a) Shut down OC unit power source, and wait for 5 minutes. (b) Turn on the dip switch SW2-2 provided on OC unit control circuit board. (c) Make OC unit power source, and wait for 5 minutes. (d) Shut down OC unit power source, and wait for 5 minutes. (e) Turn off the dip switch SW2-2 provided on OC unit control circuit board. (f) Make OC unit power source. Meaning, detecting method No response abnormality Though acknowledgment of receipt (ACK) is received after transmission, no response command is returned. Detected as error by transmission side when the same symptom is repeated 10 times with an interval of 3 seconds. Note: The address/attribute shown on remote controller indicates the controller which has detected error. Cause Checking method & Countermeasure (1) At the collision of mutual transmission data when transmission wiring is modified or the polarity is changed while turning the power source on, the wave shape changes detecting error. (2) Repeating of transmission error due to noise. (3) Damping of transmission line voltage/ signal due to exceeding of the acceptable range for transmission wiring. • Farthest Less than 200m • RC wiring Less than 12m (4) Damping of transmission voltage/ signal due to improper type of transmission line. • Wire size More than 1.25mm2 (a) Generation at test run. Turn off the power sources of OC unit, IC unit and Fresh Master for more than 5 minutes simultaneously, and make them again. →Returning to normal state means the trouble detection due to transmission line work while powering. (b) Check (3) and (4) of the causes left. (c) Investigate the transmission wave shape/noise on transmission line according to <Investigation method of transmission wave shape/noise>. - 117 - Much possibility if 6602 is generated. Checking code Meaning, detecting method Factor Checking method & Remedy 6831 MA Communication no reception error 1. Communication between the MA remote controller and the indoor unit is not done properly. 2. No proper data has been received for 3 minutes. 6834 MA Communication start bit error 1. Communication between the MA remote controller and the indoor unit is not done properly. 2. No proper data has been received for 2 minutes. (1) The remote control line of the MA remote controller or the indoor unit has a poor contact. (2) All remote controllers are slaves. (3) The wiring specifications are not observed. 1. Wire length 2. Wire thickness 3. Number of remote controllers 4. Number of indoor units (4) After the remote controller is connected, disconnection of the remote controller without resetting the power. (5) Noise enters the transfer path of the remote controller. (6) The transmission/reception circuit of the remote controller of the indoor unit is poor. (7) The transmission/reception circuit of the remote controller is defective. (1) Check the transmission lines of the indoor unit and MA remote controller for disconnection and looseness. (2) Check the power supply to the main power and remote controller lines. (3) Check whether the tolerable range of the MA remote controller line is exceeded or not. (4) Check the main/slave setting of the MA remote controller. (5) Diagnose the remote controller. (Remote controller IM description) Result: [OK]: No problem in the remote controller (wiring specifications check) 6832 MA Communication synchronization recovery error 1. Communication between the MA remote controller and the indoor unit is not done properly. 2. When transmission is impossible because the emptiness of the transfer path cannot be checked. Indoor unit : 3 minutes Remote controller : 6 seconds 6833 MA Communication transmission /reception hardware error 1. Communication between the MA remote controller and the indoor unit is not done properly. 2. When the transmitted data is received at the same time and compared, the different state continues 30 times. (1) The remote control line of the MA remote controller or the indoor unit is in poor contact. (2) It is set on two or more main remote controllers. (3) The indoor unit address is set twice. (4) Noise enters the remote controller line. (5) The wiring specifications are not observed. 1. Wire length 2. Wire thickness 3. Number of remote controllers 4. Number of indoor units (6) The transmission/reception circuit of the remote controller is defective. - 118 - [NO]: Replace the remote controller [6832, 6833, ERC]: Noise is the cause. < To (6) > (6) Check the transmission waveform and noise on the transmission signal of MA remote controller line. (7) If no problem is present in items. (1) to (6) above, replace the indoor controller board or MA remote controller. The following states can be checked from LED1 and LED2 on the indoor controller board. • LED1 is lit at the same time. The main power is supplied to the indoor unit. • LED2 alone is lit. Power is supplied to the MA remote controller line. 3. System error Checking code 7100 Meaning, detecting method Total capacity abnormality Total capacity of indoor units in the same refrigerant system exceeds limitations. Trouble source : Outdoor unit 7101 Capacity code abnormality Error display at erroneous connection of Indoor unit of which model name can not be connected. Trouble source : Outdoor unit Indoor unit 7102 Error in the number of connected units Number of units connected in the same refrigerant system exceeds limitations. Trouble source: Outdoor unit Cause Checking method & Countermeasure (1) Total capacity of indoor units in the same refrigerant system exceeds the following: (a) Check for the model total (capacity cord total) of indoor units connected. (b) Check for the switch (SW2 on indoor controller board) for setting of the model name of the indoor unit connected. Model Total capacity P200 P250 P300 P350 P400 P450 P500 P550 P600 P650 260 325 390 455 520 585 650 715 780 845 For erroneous switch setting, modify it, turn off power source of outdoor unit, and indoor unit simultaneously for 5 minutes or more to modify the switch for setting the model name (capacity code). (1) The Indoor unit model name (model code) connected is not connectable. Connectable range : 20 ~ 250 (2) Erroneous setting of the switch (SW2) for setting of model name of indoor unit connected. (a) Check for the model total (capacity cord total) of indoor units connected. (b) Check for the switch (SW2 on indoor controller board) for setting of Indoor unit model name of generating address. When it is not agreed to the model name, modify the capacity code while shutting off the power source of both Indoor and outdoor units. ✻ The capacity of Indoor unit can be confirmed by the selfdiagnosis function (SW1 operation) of indoor unit. (1) Number of unit connected to terminal block (TB3) for outdoor/indoor transmission line exceeds limitations given below: (a) Check whether the connection of units to the terminal block for indoor/outdoor transmission wiring (TB3) of outdoor unit is not exceeding the limitation. (See (1) ~ (2) left.) (b) Check for (2), (3), and (4). (c) Check for the connection of transmission wiring to the terminal block for centralized control is erroneously connected to the indoor/outdoor transmission wiring terminal block (TB3). (d) Check for the model total (capacity code total) of indoor units connected. Item Number of units 1~13 : P200 type 1) Total number of 1~16 : P250 type indoor units 1~19 : P300 type 1~20 : P350 type 1~22 : P400 type 1~24 : P450~P550 types 1~32 : P600,P650 types 2) Number of LOSSNAY units (Only when the free address is set.) 0 or 1 (2) Disconnection of transmission wiring at outdoor unit. (3) Short circuit of transmission line in case of (2) and (3), remote controller displays “HO”. 7105 Address setting abnormality • Erroneous setting of OC unit address (1) Setting error of outdoor unit address. The address of outdoor unit is not being set to 51 ~ 100. Trouble source: Outdoor unit - 119 - Check that the address of OC unit is being set to 51 ~ 100. Reset the address if it stays out of the range, while shutting the power source off. Checking code Meaning, detecting method Cause Checking method & Countermeasure 7110 Connection number setting abnormality (1) Transmission booster is faulty. (2) Power supply of transmission booster has been cut. Check transmission booster and power supply. 7111 Remote control sensor abnormality (1) The remote controller without the temperature sensor (the wireless remote controller or the M-NET compact remote controller (mounted type)) is used and the remote controller sensor for the indoor unit is specified. (SW1-1 is ON.) (a) Replace the remote controller with the one with built-in temperature sensor. Error not providing the temperature designed to remote controller sensor. Trouble source : Indoor unit 7113 Functional restriction error Disconnection of plug on main board. Check all main board connectors and rectify faulty connection. 7116 System error before flashing operation The model-switching switch (SW4-3) is set wrong. It is set to Replace MULTI. Check that the SW4-3 on the main board is OFF. The refrigerant pipe has not been washed. 7117 Unset model error Faulty wiring Disconnected connector, shorting, or contact failure. Check for the contact of the connector CNTYP1, 4, 5 on the main board. Check the record of CNTYP1, 4, 5. 7130 Different unit model error The indoor unit that uses only R22 or only R407C refrigerant is connected. Check the connected indoor unit model. The check code will appear when the indoor units with different refrigerant systems are connected. The wrong unit model is connected. When connecting the slim model (A control) with M-NET, the connection adapter for M-NET is connected to the indoor unit. - 120 - Check whether the connecting adapter for M-NET is not connected to the indoor unit. (Connect the connecting adapter for M-NET to the outdoor unit.) 4. Trouble shooting according to the remote controller malfunction and the external input error (1) In the case of MA remote controller 1 Phenomena Factors Checke method & Handling Even if the operation SW on the remote controller is pressed, the display remains unlit and the unit does not start running. (1) The power for the indoor unit is not on. 1 The power of the indoor unit is OFF. 2 The connector on the indoor unit controller board has come off. 3 The fuse on the indoor unit controller board has melted. 4 Transformer failure and disconnected wire of the indoor unit (2) The wire for the MA remote controller is connected incorrectly. 1 Disconnected wire for the MA remote controller and disconnected line to the terminal block. 2 Short circuit of the wire for the MA remote controller 3 Reversed connection of the wire for the MA remote controller 4 The wire for the MA remote controller is connected incorrectly to the terminal block for the transmission line (TB5). 5 Reversed connection between the wire for the MA remote controller and the power-supply wire for AC220~240V. 6 Reversed connection inside the indoor unit between the wire for the MA remote controller and the M-NET transmission line. (3) The number of the MA remote controllers that are connected to an indoor unit exceeds the allowable range (2 units). (4) The length and the diameter of the wire for MA remote controller are out of specification. (5) Short circuit of the wire for the remote display output for the outdoor unit or reversed polarity connection of the relay. (6) Indoor unit controller board failure (7) MA remote controller failure (a) Check voltage of the MA remote controller terminal (among 1 to 3). i) If the voltage is DC8.5-12V, the remote controller is defective. ii) If there is no voltage Check the left described (1) and (3). If a fault is found, handle the problem. If no fault is found, refer to (b). (b) Remove the wire for the remote controller from the terminal block (TB13) on the MA remote controller for the indoor unit, and check voltage among 1 to 3. i) If the voltage is DC8.5-12V Check the left described (2) and (4). If a fault is found, handle the problem. ii) If there is no voltage Check the left described (1) again. If a fault is found, handle the problem. If no fault is found, check the wire for the remote display output (the relay polarity). If no further fault is found, replace the indoor controller board. (Power indicator does not appear on the screen.) - 121 - Phenomena 2 When turning on the remote controller operation SW, a temporary operation display is indicated, and the display lights out immediately, and the unit stops. Factors Checke method & Handling (1) The power for the M-NET transmission line is not supplied from the outdoor unit. (2) Short circuit of the transmission line. (3) Incorrect wiring of the M-NET transmission line on the outdoor unit side. 1 Disconnected wire for the MA remote controller and disconnected line to the terminal block. 2 The indoor transmission line is connected incorrectly to terminal block (TB7) to the transmission line for centralized control. 3 The power supply connectors (CN40) for multiple outdoor units are inserted. Or the power supply connector (CN40) for outdoor unit is inserted in the system to which the power supply unit for transmission line is connected. (4) Disconnected M-NET transmission line on the indoor unit side. (5) Disconnected wire between terminal block (TB5) to the M-NET transmission line of the indoor unit and the indoor controller board (CN2M) or disconnected connector. When the factor (2) and (3) apply, self-diagnosis LED works and the check code 7102 will be displayed. Check method & Handling Same symptom for all units in a single refrigerant system? NO Check voltage of the terminal block (TB5) to the transmission line of the indoor unit YES Self-diagnosis LED checks Check for Item (5) NO 17-30V? YES 7120 error display? YES Check for the Factor (2) and (3) Check for Item (5) NO Handle the problems YES Problems? NO Failure of the indoor unit controller board or the MA remote controller Check for Item (1) For the check method, follow 9.[4].7.(2) “Outdoor unit transmission power source circuit failure judgment” Handle the problems - 122 - Phenomena 3 Factors “HO” display on the remote controller does not turn off, and the switch does not work. (“HO” display turn off 3 minutes later, after turning the power on.) (1) The power for the M-NET transmission line is not supplied from the outdoor unit. (2) Short circuit of the transmission line. (3) Incorrect wiring of the M-NET transmission line on the outdoor unit side. 1 Disconnected wire for the MA remote controller and disconnected line to the terminal block. 2 The indoor transmission line is connected incorrectly to terminal block (TB7) to the transmission line for centralized control. 3 The power supply connectors (CN40) for multiple outdoor units are inserted. Or the power supply connector (CN40) for outdoor unit is inserted in the system to which the power supply unit for transmission line is connected. (4) Disconnected M-NET transmission line on the indoor unit side. (5) Disconnected wire between terminal block (TB5) to the M-NET transmission line of the indoor unit and the indoor controller board (CN2M) or disconnected connector. (6) The wire for the MA remote controller is connected incorrectly. 1 Short circuit of the wire for the MA remote controller. 2 Disconnected wire for the MA remote controller (No.2) and disconnected line to the terminal block. 3 Reversed connection under group control. 4 The wire for the MA remote controller is connected incorrectly to the terminal block to the transmission line (TB5). 5 The M-NET transmission line is connected incorrectly to the terminal block (TB13) on the MA remote controller. (7) The sub/main setting of the MA remote controller is set to sub. (8) More than 2 main MA remote controllers are connected. (9) Indoor unit controller board failure (MA remote controller communication line) (10) Remote controller failure. When the factor (2) and (3) apply, self-diagnosis LED works and the check code 7102 will be displayed. Check method & Handling Same symptom for all units in a single refrigerant system? NO Check voltage of the terminal block (TB5) to the transmission line of the indoor unit YES Self-diagnosis LED checks Check for Item (4) NO 17-30V? YES YES 7120 error display? Check for the Factor (2) and (3) NO Problems? NO Check for Item (5) Handle the problems YES Replace the M-NET remote controller with the MA remote controller Check for Item (1) Handle the problems For the check method, follow 9.[4].7.(2) “Outdoor unit transmission power source circuit failure judgment” - 123 - YES Problems? NO Failure of the indoor unit controller board or the MA remote controller YES YES YES YES - 124 - Refer to 4. (1) 1 NO Indoor unit power failure? NO Check LD1 on the indoor unit control board. Lit on? NO YES YES Check whether the screw for the daisychain is not loose. NO Does the unit work properly when it is daisy-chained again? NO Is there an indoor unit where there is no display of LED2 on all control boards? NO Turn the power on Replace the indoor unit control board. NO YES Turn the power on Check for power supply Refer to 4. (1) 1-(2) NO Check the voltage between the MA remote controller terminals (A and B). Less than DC9-13V? NO Flickering? (Turns on momentarily approximately every 20 second) Replace the MA remote controller NO YES Use the wire that meets the specification. YES NO YES YES YES YES YES Check for the wire for the remote controller. YES Refer to 4. (1) 3. Normal (Is the thermo OFF signal input?) Normal Replace the remote controller or the indoor control board. Check for the equipment package indoor unit. Set the SWA to “1”. Refer to 4. (1) 2. No.1 Refrigerant circuit check NO Turn on the indoor unit again? NO If operated afterwards, error 6602 or 6607 occurs. NO Is operation possible? NO Although No.1 refrigerant circuit is normal, No.2 or No.3 refrigerant circuit keep stopping. Refer to the error code list. Normal Include when “Centrally controlled” is displayed. Check for the M-NET transmission line. YES YES YES Turns off within approximately 3 minutes. After turning on the original power, restart the controller. During this time, “HO” is displayed on the MA remote controller. Keep displaying for more than 3 minutes. Keep displaying “HO” on the MA remote controller. Refer to the self-diagnosis handling list for the displayed error code. Normal YES Replace the indoor control board. Replace the indoor unit control board. Check for the power supply. NO Power supply voltage AC200-260V? Check for the wire for the remote controller. YES YES YES Keep the operation NO NO Is the compulsory thermo OFF (SWA) switch set to “2” or “3”? If no fault is found Does the unit work properly when the power is reset? Replace the indoor control board. NO NO No fault with the equipment package indoor unit? NO Demand control by MELANS? NO Error display? NO Thermo is OFF? External thermo input setting? (SW3-3=ON) Check whether there is a fault with other indoor units. YES Replace the remote controlleror the indoor unit control board. Short circuit of the remote controller? Connect 2 remote controllers of less. YES Replace the MA remote controller. NO Are the length and the diameter of the wire for MA remote controller out of specification? NO Disconnected wire for the remote controller? Disconnected wire to the terminal block? Disconnected relay connector? NO YES NO Replace the indoor unit control board. NO YES Normal (Operate the unit with external operation) YES Is the unit grouped with the equipment package indoor unit? Replace the remote controller or the indoor control board. YES NO Keep the operation. Check whether LD1 on the indoor unit control board is flickering. (Flickers for 2 or 3 seconds approximately every 20 seconds) Check the voltage between the MA remote controller terminal blocks (TB15) (A and B). Less than DC9-13V? NO NO Does the unit work properly when the power is reset? Replace the indoor unit control board when the unit starts running. Keep the operation. NO Refer to the self-diagnosis handling list for the displayed error code. Is the operation for bidden by MELANS or is the external operation input setting made? (SWC=ON) YES YES YES Does the unit work properly YES when the power is reset? NO Running group operation with the MA remote controller? NO “Centrally controlled” display? NO Error display? NO When operating with the remote controller, the “ON” display will appear. Does the number of the MA remote controllers that are connected to an indoor unit exceed the allowable range (2 units)? YES YES YES Refer to 4. (1) 1 ✻After handling the problem, daisy-chain the wire for the MA remote controller again. Does the MA remote controller work properly when it is connected to the specified indoor unit? YES YES Check for daisy-chain YES When disconnecting the daisychain between the MA remote controllers of the indoor unit, is LED2 on either control board of each indoor unit displayed? NO All the indoor unit power failure? NO Is LED2 on the control boards of other indoor units displayed? Does the indoor unit make YES an instantaneous stop? YES After more than 20 minutes since turning the power on, is LED2 check of the indoor control board still displayed? Check the indoor unit on which LED2 is displayed. NO Running group operation with the MA remote controller? NO Is “ ” displayed on the remote controller? NO Flickering? After turning the power on, check whether “HO” is displayed on the remote controller. Refer to 4. (1) 2. Check the malfunctioning refrigerant circuit. YES <Flow chart> Even if the operation SW on the remote controller is pressed, the indoor and the outdoor units do not start running. (2) In the case of the M-NET remote controller 1 Phenomena Factors Checke method & Handling Even if the operation SW on the remote controller is pressed, the display remains unlit and the unit does not start running. (1) The power for the M-NET transmission line is not supplied from the outdoor unit. (2) Short circuit of the transmission line (3) Incorrect wiring of the M-NET transmission line on the outdoor unit side. 1 Disconnected wire for the MA remote controller and disconnected line to the terminal block. 2 The indoor transmission line is connected incorrectly to terminal block (TB7) to the transmission line for centralized control. (4) Disconnected transmission line on the remote controller side (5) Remote controller failure (a) Check voltage of the M-NET remote controller transmission terminal. i) If the voltage is 17V-30V →The M-NET remote controller is defective. ii) If there is 17V or less →Refer to 9.[4].7.(2) “Outdoor unit transmission power source circuit failure judgment”. (Power indicator does not appear on the screen.) 2 When turning on the remote controller operation SW, a temporary operation display is indicated, and the display lights out immediately. When the factor (2) and (3) apply, self-diagnosis LED of the outdoor unit works and the check code 7102 will be displayed. (1) The power for the indoor unit is not on. 1 The main power of the indoor unit (AC220~240V) is OFF. 2 The connector on the indoor unit controller board has come off. 3 The fuse on the indoor unit controller board has melted. 4 Transformer failure and disconnected wire of the indoor unit. 5 The indoor controller board failure. (2) The main board of the indoor and the outdoor unit failure As the indoor unit does not interact with the outdoor unit, the outdoor unit model cannot be recognized. Check method & Handling Check indoor unit power source terminal block voltage Check indoor LED3 NO AC 220V? Lighting? Lighting Extinguishing or unable to confirm Check main power source of power source wiring Apply power source again YES Check fuse on circuit board YES Blown? NO Check 220V circuit for short circuit and ground fault Check connection of connector Disconnected YES Improper connector connection NO Check transformer *1 resistance value Within rated? NO YES Check for the change of LED display by operating dip switch SW1 for self-diagnosis. Check self-diagnosis function of outdoor unit Changed? Check cause of transformer disconnection. •Ground fault on circuit board •Ground fault on sensor, LEV NO Check self-diagnosis function after powering outdoor unit again Changed? YES Faulty indoor controller board YES Accidental trouble NO Faulty outdoor unit control circuit board Repair faulty point *1 Check the transformer in accordance with the “TROUBLESHOOTING” in the indoor unit’s service handbook. - 125 - Phenomena 3 “HO” display on remote controller does not disappear and ON/OFF switch is ineffective. Factors (Without using MELANS) (1) Outdoor unit address is set to “00” (2) Erroneous address. 1 Address setting of indoor unit to be coupled with remote controller incorrect. (Indoor unit = remote controller – 100.) 2 Address setting of remote controller incorrect. (Remote controller = indoor unit + 100.) (3) Faulty wiring of transmission terminal block TB5 of indoor unit in the same group with remote controller. (4) Centralized control SW2-1 of outdoor unit is turned ON. (5) Disconnection or faulty wiring of indoor unit transmission line. (6) Disconnection between indoor unit M-NET transmission line terminal block (TB5) and connector CN2M. (7) More than 2 sets of power supply connector (CN40) are inserted into centralized control transmission line of outdoor unit. (8) M-NET remote controller is connected to the terminal block of MA remote controller. (9) Faulty outdoor unit control circuit board. (10) Faulty indoor controller board. (11) Faulty remote controller. (Interlocking control with MELANS) (12) No grouping registration from MELANS (Neglecting to set the relation between indoor unit and network remote controller). (13) Disconnection of centralized control transmission line (TB7) at outdoor unit. (14) Power supply connectors (CN40) of Multiple outdoor units are inserted into transmission lines. Or in the system to which power supply unit for transmission line, power supply of the outdoor unit (CN40) is inserted into transmission line. Check method & Handling In case MELANS is not used Same symptom for all units in a single refrigerant system? NO Confirm address of remote controller with “HO” displayed YES Check outdoor unit address NO 51 ~ 100? Outdoor unit address setting miss Address setting miss of remote controller NO YES YES Check address of coupling indoor unit Check centralized control switch SW2-1 at outdoor unit YES ON? NO Indoor unit + 100? Switch setting miss Change from ON to OFF Indoor address setting miss NO Remote controller -100? YES Check voltage of indoor unit M-NET transmission terminal block Faulty outdoor unit control circuit board Transmission line wiring miss of indoor unit M-NET NO 17 ~ 30V? YES Check connection between indoor unit M-NET transmission terminal block (TB5) and connector CN2M Disconnection of CN2M connector YES Disconnection NO Faulty indoor controller board or remote controller Repair spot in trouble In case with MELANS used When MELANS is used, “HO” display on the remote controller will disappear at the group registration of the indoor unit and local remote controller. If “HO” does not disappear after the registration, check the items (11) ~ (13) in the Factors column. - 126 - Phenomena 4 “88” appears on remote controller at registration and access remote controller. Factors (Generates at registration and confirmation) (1) Erroneous address of unit to be coupled. (2) Disconnection of transmission line of unit to be coupled (No connection). (3) Faulty circuit board of unit to be coupled. (4) Installation miss of transmission line. (Generates at interlocking registration between LOSSNAY and the indoor unit) Checke method & Handling (a) Confirm the address of unit to be coupled. (b) Check the connection of transmission line. (c) Check the transmission terminal block voltage of unit to be coupled. i) Normal if voltage is DC17 ~ 30V. ii) Check the item d) in case other than i). (d) Check for the main power of LOSSNAY. (5) The power of LOSSNAY is OFF. (Confirmation of different refrigerant system controller) (6) Disconnection of power source of outdoor unit to be confirmed. (7) Disconnection of centralized control transmission line (TB7) of outdoor unit. (8) Power supply connector (CN40) is not inserted into centralized control transmission line in grouping with different refrigerant system without using MELANS. (9) More than 2 sets of power supply connector are inserted into the centralized control transmission line of outdoor unit. (10) In the system connected with MELANS, power supply connector (CN40) is inserted into the centralized control transmission line of outdoor unit. (11) Short circuit of centralized control transmission line. - 127 - (e) Confirm the power source of outdoor unit to be coupled with the unit to be confirmed. (f) Confirm that the centralized control transmission line (TB7) of outdoor unit is not disconnection. (g) Confirm the voltage of centralized control transmission line. i) Normal in case of 10V ~ 30V. ii) Check the items (8) ~ (11) left in case other than i). (3) Both for MA remote controller and M-NET remote controller Phenomena 1 Cooling with normal remote controller display but not providing capacity. Factors Checke method & Handling (1) Insufficient frequency rise 1 Faulty detection of pressure sensor. 2 Higher discharge temperature exceeding frequency limit. 3 Higher high pressure exceeding frequency limit. 4 Low pressure excessively lowered. (a) Observe difference between sensor detected pressure and actual pressure by monitoring with LED. →At abnormal intake, check the pressure sensor. (Refer to Troubleshooting of Pressure Sensor). Note: Lower intake of low pressure sensor than actual pressure causes insufficient capacity. SW1 setting High pressure sensor 1 2 3 4 5 6 7 8 9 10 6 7 8 9 10 ON Low pressure sensor 1 2 3 4 5 ON (b) Observe difference between evaporating temperature (Te) and target evaporating temperature (Tem) by monitoring with LED. Note: Higher Te than Tem causes insufficient capacity. SW1 setting Evaporating temperature Te 1 2 3 4 5 6 7 8 9 10 ON Target evaporating temperature Tem 1 2 3 4 5 6 7 8 9 10 ON Note: When frequency does not rise even at higher Te than Tem, frequency restriction by discharge temperature or high pressure may be affected. At high discharge temperature →Refer to 1102 At high pressure →Refer to 1302 (2) Faulty action of indoor unit LEV 1 Faulty action of indoor unit LEV does not allow sufficient flow rate. Frequency does not rise due to lowered low pressure. 2 Leaking LEV of stopping unit lowers flow rate of operating unit. Refer to the page of LEV troubleshooting ( 9.[4].5 ) (3) Abnormal speed of outdoor unit fan 1 Faulty motor or board, or heat exchanger clogging lowers airflow rate. 2 Faulty temperature intake of OA sensor causes fan control malfunction. 3 Faulty intake of pressure sensor causes fan control malfunction. Refer to the page of outdoor unit fan troubleshooting. Refer to the page of 5106. Refer to the page of 1302. (4) Long piping length Pressure loss degree at pressure side varies cooling capacity greatly. Check the characteristic of capacity decrease by piping length. Piping pressure loss is assumable by temperature difference between heat exchanger outlet temperature of indoor unit and OC evaporation temp. (Te). →Modify piping. (5) Piping size is not proper (slender) (6) Insufficient refrigerant volume Discharge temperature rises while frequency does not rise. - 128 - Refer to Item 1-(1) (Frequency does not rise sufficiently.) Refer to Item Refrigerant volume adjustment. Phenomena 1 2 Cooling with normal remote controller display but not providing capacity. Heating with normal remote controller display but not providing capacity. Factors Checke method & Handling (7) Clogging by foreign matter Check temperature difference between before and after a portion (strainer, distributor) of low pressure piping where foreign matter may likely be clogged. Significant temperature drop may indicate clogging. →Remove foreign matter inside piping. (8) Indoor unit inlet temperature excessively low (Less than 15˚C wet bulb) Check inlet temperature and short cycle at indoor unit side. To improve using manner (9) Faulty compressing Leaking inside compressor lowers refrigerant circulation volume. As leaking if existed increases discharge temperature, judge by measuring the temperature. (10) Faulty action of LEV1 As sufficient sub-cooling can not be kept at outdoor unit outlet due to faulty LEV1 action, refrigerant is difficult to flow at indoor unit. Refer to page of LEV troubleshooting ( 9.[4].5 ) High possibility at little or no difference between TH5 and TH7 (11) Faulty TH5, TH7, HPS sensor, erroneous wiring. No normal control of LEV1 a) Check thermistor. b) Check wiring. (1) Insufficient frequency rise 1 Faulty detection of pressure sensor 2 Higher discharge temperature exceeding frequency limit 3 Higher high pressure exceeding frequency limit a) Observe difference between sensor detected pressure and actual pressure by monitoring with LED. →At abnormal intake, check the pressure sensor. (Refer to Troubleshooting of Pressure Sensor Note: Higher intake of high pressure sensor than actual pressure causes insufficient capacity. SW1 setting High pressure sensor 1 2 3 4 5 6 7 8 9 10 6 7 8 9 10 ON Low pressure sensor 1 2 3 4 5 ON (b) Observe difference between condensing temperature (Tc) and target condensing temperature (Tcm) by monitoring with LED. Note: Higher Te than Tem causes insufficient capacity. SW1 setting Condensing temperature Tc 1 2 3 4 5 6 7 8 9 10 ON Target condensing temperature Tcm 1 2 3 4 5 6 7 8 9 10 ON Note: When frequency does not rise even at lower Tc than Tcm, frequency restriction by discharge temperature or high pressure may be affected. At high discharge temperature →Refer to 1102 At high pressure →Refer to 1302 (2) Faulty action of indoor unit LEV Faulty action of indoor unit LEV does not allow sufficient flow rate. - 129 - Refer to the page of LEV troubleshooting. Phenomena 2 Heating with normal remote controller display but not providing capacity. Factors Checke method & Handling (3) When abnormal temperature of indoor unit piping temperature sensor is taken higher, LEV is throttled excessively due to apparent small sub-cooling. Check piping thermistor. (4) Abnormal speed of outdoor unit fan 1 Faulty motor or board, or heat exchanger clogging lowers airflow rate. This lowers airflow rate and low pressure leading to increase discharge temperature. 2 Faulty temperature intake of piping sensor causes fan control malfunction. Refer to the page of outdoor unit fan. (5) Faulty insulation of refrigerant piping (6) Long piping length Excessively long piping length at high pressure side causes high pressure loss leading to decrease in high pressure. (7) Piping size is not proper (slender) (8) Clogging by foreign matter 3 Check the characteristic of capacity decrease by piping length. →Modify piping Check pressure difference between before and after a portion (strainer, distributor) of high pressure (gas) piping where foreign matter may likely be clogged. Difficult to confirm clogging inside extended piping. Check clogging in the same manner in cooling by operating under cooling cycle. →Remove foreign matter (9) Indoor unit inlet temperature excessively high (exceeding 28˚C) Check inlet temperature and short cycle at indoor unit side. To improve using manner (10) Insufficient refrigerant volume Discharge temperature drops while frequency does not rise. Likely to enter refrigerant recovery operation. Refer to Item 2-(1). (Insufficient frequency rise) Refer to Item Refrigerant volume adjustment. (11) Faulty compressing (as same in case of cooling) Check discharge temperature. As a previous step to apply emergency stop under error mode, the first detection will not be applied with emergency stop as it is stopping under the 3 minutes restart prevention mode as an intermittent fault checking. 1 High pressure error 2 Discharge temperature error 3 Radiator panel thermistor error 4 Thermistor error 5 Pressure sensor error 6 Overcurrent shutout 7 Refrigerant over charge error (a) Check the mode operated in the past by displaying intermittent fault check history by LED display with SW1. (b) Check the mode for stopping through the operation reproduced displaying intermittent fault checking by LED display with SW1. ↓ For each error mode, refer to the relating page. ❉ When checking freeze protection tripping, set SW1 to the status displaying indoor piping temperature table (Chapter 0) to confirm the temperature. Notes:1. Freeze protection tripping only under cooling mode may be considered in addition to the above. (Freeze protection is detected by one or all indoor units.) 2. With some error codes, emergency stop is not commenced even at the second stopping. - 130 - [3] Investigation of Transmission Wave Shape/Noise 1. M-NET transmission Control is performed by exchanging signals between outdoor unit, indoor unit and remote controller by M-NET transmission. If noise should enter into the transmission line, the normal transmission will be hindered causing erroneous operation. (1) Symptom caused by the noise entered into transmission line Cause Noise entered into transmission line Erroneous operation Error code Signal changes and is misjudged as the signal of other address. 6600 Transmission wave shape changes to other signal due to noise. 6602 Transmission wave shape changes due to noise, and can not be received normally thus providing no reply (ACK). 6607 Transmission can not be made continuously due to the entry of fine noise. 6603 Transmission can be made normally, but reply (ACK) or answer can not be issued normally due to noise. 6607 6608 (2) Method to confirm wave shape No fine noise allowed ❉1 VHL [With transmission] VBN 52µs 52µs Logical value “0” 52µs 52µs Logica valuel “1” 52µs No fine noise allowed ❉1 [Without transmission] Check the wave shape of transmission line with an oscilloscope to confirm that the following conditions are being satisfied. 1) The figure should be 104µs/bit ± 1%. 2) No finer wave shape (noise) than the transmission signal (52µs ± 1%) should be allowed. ❉1 3) The sectional voltage level of transmission signal should be as follows. Logic value Transmission line voltage level 0 VHL = 2.0V or more 1 VBN = 1.3V or less ❉1 However, minute noise from the DC-DC converter or inverter operation may be picked up. - 131 - (3) Checking and measures to be taken (a) Measures against noise Check the items below when noise can be confirmed on wave shape or the error code in the item (1) is generated. Measures to be taken (1) Wiring of transmission and power lines in crossing. Isolate transmission line from power line (5cm or more). Never put them in a same conduit. (2) Wiring of transmission line with that of other system in bundle. Wire transmission line isolating from other transmission line. Wiring in bundle may cause erroneous operation like crosstalk. (3) Use of shield wire for transmission line (for both indoor unit control and centralized control). Use specified transmission wire. Type : Shield line CVVS/CPEVS Wire diameter : 1.25mm2 or more (4) Repeating of shield at the repeating of transmission line with indoor unit. The transmission line is wired with 2-jumper system. Wire the shield with jumper system as same for transmission line. When the jumper wiring is not applied to the shield, the effect against noise will be reduced. (5) Are the unit and transmission lines grounded as instructed in the INSTALLATION MANUAL? Connect to ground as shown in the INSTALLATION MANUAL. (6) Earthing of the shield of transmission line (for indoor unit control) to outdoor unit. One point earthing should be made at outdoor unit. Without earthing, transmission signal may be changed as the noise on the transmission line has no way to escape. (7) Arrangement for the shield of transmission line (for centralized control). For the shield earth of the transmission line for centralized control, the effect of noise can be minimized if it is from one of the outdoor units in case of the group operation with different refrigerant systems, and from the upper rank controller in case the upper rank controller is used. However, the environment against noise such as the distance of transmission line, the number of connecting sets, the type of connecting controller, and the place of installation, is different for the wiring for centralized control. Therefore, the state of the work should be checked as follows. a) No earthing • Group operation with different refrigerant systems One point earthing at outdoor unit • Upper rank controller is used Earthing at the upper rank controller b) Error is generated even though one point earth is being connected. Earth shield at all outdoor units. Check for earthing Checking for wireing method Items to be checked Connect to ground as shown in the user’s manual. (b) When the wave height value of transmission wave shape is low, 6607 error is generated, or remote controller is under the state of “HO.” Items to be checked Measures to be taken (8) The farthest distance of transmission line is exceeding 200m. Confirm that the farthest distance from outdoor unit to indoor unit/ remote controller is less than 200m. (9) The types of transmission lines are different. Use the transmission wire specified. Type of transmission line : Shield wire CVVS/CPEVS Wire dia. of transmission line : 1.25mm2 or more (10) No transmission power (30V) is being supplied to the indoor unit or the remote control. a) Check 30V on CNS1, CNS2. b) Remove CNS1 and CNS2 and check resistance is 5-2, 6-2, if not this is a fault. Check main board R3 resistance is 1kΩ±5%, if not this is a fault. (11) Faulty indoor unit/remote controller. Replace outdoor unit circuit board or remote controller. - 132 - 2. MA remote control transmission The MA remote control and indoor unit communicate with the current tone burst method. (1) Symptoms caused by infiltration of noise on transmission cable If noise, etc., infiltrates the transmission cable and the communication between the MA remote control and indoor unit is cut off for three consecutive minutes, a MA communication error (6831) will occur. (2) Confirmation of transmission specifications and waveform TB15 1 2 A1, B2: No polarity Across terminal No. 1-2 : Power supply (8.5V to 12VDC) Indoor unit MA remote controller Transmission waveform (Across terminal No. 1-2) (1) 2msec/bit ± 5% must be satisfied Logical 1 Logical 0 Logical 1 Logical 1 - 133 - (2) Voltage across terminal No.1-2 must be within range shown on left. [4] Troubleshooting of Principal Parts 1. Pressure sensor (1) Check for failure by comparing the sensing pressure according to the high pressure/low pressure pressure sensor and the pressure gauge pressure. Set SW1 as shown below to display the high and low pressure sensor data displayed digitally by the light emitting diode LD1. 1 2 3 4 5 6 7 8 9 10 ON (1) In the stopped condition, compare the pressure readings from the gauge and from the LD1 display. (a) If the gauge pressure is 0~0.0098MPa, the internal pressure is dropping due to gas leakage. (b) If the pressure according to the LD1 display is 0~0.0098MPa, there is a faulty contact at the connector, or it is disconnected. Proceed to (4). (c) If the pressure according to the LD1 display is 4.15MPa for high pressure or higher, proceed to (3). (d) If other than (a), (b) or (c), compare the pressure readings during operation. Proceed to (2). (2) Compare the pressure readings from the gauge and from the LD1 display while in the running condition. (a) If the difference between the two pressures is within 0.098MPa, for high pressure and 0.03MPa for low pressure both the affected pressure sensor and the main MAIN board are normal. (b) If the difference between the two pressures exceeds 0.098MPa, for high pressure and 0.03MPa for low pressure the affected pressure sensor is faulty (deteriorating performance). (c) If the pressure reading in the LD1 display does not change, the affected pressure sensor is faulty. (3) Disconnect the pressure sensor from the MAIN board and check the pressure according to the LD1 display. (a) If the pressure is 0~0.098MPa for low pressure on the LD1 display, the affected pressure sensor is faulty. (b) If the pressure is 4.15MPa for high pressure or higher, the MAIN board is faulty. . out the No. 2 and No. 3 pins of the connector (4) Disconnect the pressure sensor from the MAIN board and short (63HS), then check the pressure by the LD1 display. (a) If the pressure according to the LD1 display is 4.15MPa for high pressure the affected pressure, the affected pressure sensor is faulty. (b) If other than (a), the MAIN board is faulty. (2) Pressure sensor configuration The pressure sensors are configured in the circuit shown in the figure below. If DC 5V is applied between the red and black wires, a voltage corresponding to the voltage between the white and black wires is output and this voltage is picked up by the microcomputer. The output voltage is 0.071V/0.098MPa. 1 2 3 1 2 3 Connector ✻ The pressure sensor on the body side is specified for connector connection. The connector pin number on the body side is different from that on the main board side. Main board side Pin 3 Pin 2 Pin 1 GND Vout Vcc (DC5V) (Black) (White) (Red) 4.5 4.0 3.5 Pressure [MPa] Vcc Vout GND Body side Pin 1 Pin 2 Pin 3 Pressure 4.15MPa Vout 0.5 ~ 3.5V 0.071V/0.098MPa 63HS 3.0 2.5 2.0 1.5 1.0 0.5 0 0 0.5 1 1.5 2 Output voltage [V] - 134 - 2.5 3 3.5 2. Low-pressure pressure sensor (63LS) (1) Conduct the check comparing the pressure that is detected by the low-pressure pressure sensor and the low-pressure gauge pressure. The pressure that is detected by the low-pressure pressure sensor will be displayed on the LED screen, LD1 when setting the digital shift switch (SW1) as shown below. 1 2 3 4 5 6 7 8 9 10 ON (1) Compare the gauge pressure and the pressure that is displayed on LD1 while the sensor being stopped. (a) When the gauge pressure is 0~0.098MPa → Inner pressure drop due to gas leak. (b) When the pressure that is displayed on LD1 0~0.098MPa → Contact failure of the connector Check for the contact and proceed to (4). (c) When the pressure that is displayed on LD is 1.7MPa or more → Proceed to (3). (d) When (a), (b), and (c) are not applied, compare the pressure while the sensor is operating. → Proceed to (2). (2) Compare the gauge pressure and the pressure that is displayed on LD1 while the sensor is operating. (Compare by MPa unit.) (a) When the difference between the both pressure is within 0.03MPa → Both the low-pressure pressure sen sor and the main board are normal. (b) When the difference between the both pressure is over 0.03MPa → The low-pressure pressure sensor is defective (particular deterioration). (c) When the pressure that is displayed on LD1 does not change → The low-pressure pressure sensor is defective. (3) Remove the low-pressure pressure sensor from the main board and check the pressure that is displayed on LD1. (a) When the pressure that is displayed on LD1 is 0~0.098MPa → The low-pressure pressure sensor is defective. (b) When the pressure that is displayed on LD1 is approximately 1.7MPa → The main board is defective. • When the outdoor temperature is 30˚C or less → The main board is defective. • When the outdoor temperature is over 30˚C → Proceed to (5). (4) Remove the low-pressure pressure sensor from the main board, short circuit between the No.2 and No.3 connector (63LS), and check the pressure that is displayed LD1. (a) When the pressure that is displayed on LD1 is 1.7MPa or more → The low-pressure pressure sensor is defective. (b) When (a) is not applied → The main board is defective. (5) Remove the high-pressure sensor (63HS) from the main board, insert it into the low-pressure pressure sensor (63LS), and check the pressure that is displayed on LD1. (a) When the pressure that is displayed on LD1 is 1.7MPa or more → The main board is defective. (b) When (a) is no applied → The low-pressure pressure sensor is defective. (2) Low-pressure pressure configuration The low-pressure pressure sensor is composed of the circuit as shown in the right figure. When DC5V is applied between Vcc and GND, the voltage that is appropriate for the pressure between Vout and GND will be output, and it will be taken by the microcomputer. The output voltage is 0.173V/0.098MPa. 1 2 3 1 2 3 Connector ✻ The pressure sensor on the body side is specified for connector connection. The connector pin number on the body side is different from that on the main board side. Main board side Pin 3 Pin 2 Pin 1 GND Vout Vcc (DC5V) (Black) (White) (Red) 1 2.5 1.8 1.6 1.4 Pressure [MPa] Vcc Vout GND Body side Pin 1 Pin 2 Pin 3 Pressure 0 ~ 1.7MPa Vout 0.5 ~ 3.5V 0.173V/0.098MPa 63LS 1.2 1.0 0.8 0.6 0.4 0.2 0 0 0.5 1.5 2 Output voltage [V] - 135 - 3 3.5 3. Solenoid valve Check if the control board’s output signals and the operation of the solenoid valves match. Setting the self-diagnosis switch (SW1) as shown in the figure below causes the ON signal of each relay to be output to the LED’s. Each LED shows whether the relays for the following parts are ON or OFF. When a LED lights up, it indicates that the relay is ON. ✻The circuit is closed when the relay is ON depending on parts. Refer to the following instructions. LED SW1 1 2 3 4 5 6 6 3 4 5 21S4a 21S4b 21S4c CH11 CH12 SV1 1 2 3 4 5 6 6 7 8 7 8 9 10 ON ON 2 7 8 9 10 ON 1 2 3 4 5 1 SV3 7 8 9 10 SV5b SV5c 52F When whatever valves malfunction, check whether the solenoid valve coil is not attached wrongly, the lead wire of the coil is not disconnected, the connector on the board is not inserted wrongly, or the wire for the connector is not disconnected. (1) In the case of SV1 (Bypass valve) This solenoid valve opens when powered (Relay ON). (a) When the compressor starts, SV1 is ON for 4 minutes, check operation by whether the solenoid valve is emit ting an operating noise. (b) Changes in the operating condition by solenoid valve operation can be confirmed by the temperature of the bypass circuit and the sound of the refrigerant. (c) SV1 goes on in accordance with the rise in high pressure in the cooling and heating mode, check operation by LED display and the operating noise emitted by the solenoid valve. (2) In the case of SV3 (Bypass valve) (Only P450-P650 types) This solenoid valve opens when powered (Relay ON). The valve is normally powered while No.2 Comp is being stopped. (When the discharge temperature of No.1 Comp exceeds 110˚C, the valve may be turned off.) To check whether the valve is open or closed, check the change of the SV3 downstream piping temperature while the valve is being powered. When the valve is open, high-temperature gas will run. Do not touch the pipe when checking the temperature. (3) In the case of 21S4a (4-way switching valve) About this 4-way valve When not powered : The electricity runs between the oil separator exit and the heat exchanger (in the case of P400 type) HEXB, between heat exchangers at the rear (in the case of P450-P650 types), between HEX1a and 2a (heat exchanger on the right (as you face the front of the unit)), and between the gas ball valve (BV1) and the accumulator. This circulation is for cooling. When powered : The electricity runs between the oil separator and the gas ball valve, and between the heat exchanger and the accumulator. This circulation is for heating. Check the LED display and the intake and the discharge temperature for the 4-way valve to check whether the valve has no faults and the electricity runs between where and where. Do not touch the pipe when checking the temperature, as the pipe on the oil separator side will be hot. ✻ Do not give an impact from outside, as the outer hull will be deformed leading to the malfunction of the inner valve. - 136 - (4) In the case of 21S4b (4-way switching valve) About this 4-way valve When not powered : The electricity runs between the oil separator exit and the heat exchanger (in the case of P400 types) HEXB, between heat exchangers at the rear (in the case of P450-P650 types), and between HEX1b and 2b (heat exchanger on the left (as you face the front of the unit)). When powered : The electricity runs between the heat exchanger and the accumulator, and the valve opens or closes the heat exchanger circuit when cooling or heating. Check the LED display and the switching sound to check whether the valve has no faults, however, it may be occasionally difficult to check by the sound, as the switching coincides with 21S4a and 21S4c. In this case, check the intake and the discharge temperature for the 4-way valve to check that the electricity runs between where and where. ✻1 Do not touch the valve when checking the temperature, as it will be hot. ✻2 Do not give an impact from outside, as the outer hull will be deformed leading to the malfunction of the inner valve. (5) In the case of 21S4c (4-way switching valve) (Only P400-P650 types) About this 4-way valve When not powered : The electricity runs between the oil separator exit and the heat exchanger (in the case of P400 types) HEXF, between heat exchangers at the front (in the case of P450-P650 types) HEX1a, and between the heat exchangers on the right (as you face the front of the unit). When powered : The electricity runs between the heat exchanger and the accumulator, and the valve opens or closes the heat exchanger circuit when cooling or heating. Check the LED display and the switching sound to check whether the valve has no faults, however, it may be occasionally difficult to check by the sound, as the switching coincides with 21S4a and 21S4c. In this case, check the intake and the discharge temperature for the 4-way valve to check that the electricity runs between where and where. ✻1 Do not touch the valve when checking the temperature, as it will be hot. ✻2 Do not give an impact from outside, as the outer hull will be deformed leading to the malfunction of the inner valve. (6) In the case of SV5b (2-way switching valve) This valve closes when powered. Check the LED display and the switching sound to check whether the valve has no faults. When cooling, the switching coincides with 21S4b. When it is difficult to check by the sound, check the temperature at the front and the back of the pipe to check whether the refrigerant flows. ✻ Do not give an impact from outside, as the outer hull will be deformed leading to the malfunction of the inner valve. (7) In the case of SV5c (2-way switching valve) (Only P400-P650 types) This valve closes when powered. Check the LED display and the switching sound to check whether the valve has no faults. When cooling, the switching coincides with 21S4c. When it is difficult to check by the sound, check the temperature at the front and the back of the pipe to check whether the refrigerant flows. ✻ Do not give an impact from outside, as the outer hull will be deformed leading to the malfunction of the inner valve. 4. Outdoor unit fan • To check the revolution of the fan, check the inverter output state on the LED screen, as the inverter on the outdoor fan controls the revolutions of the fan. The revolution of the fan is approximately 600rpm at full speed. • When starting the fan, the fan runs at full speed for 5 seconds. • For the 2 fans for P450-P650 types, the fan on the right (as you face the fan) runs at all times and the fan on the left runs when required. (When heating except for defrost, both fans run.) 1 2 3 4 5 6 7 8 9 10 • When setting the DIP SW1 to ON , the inverter output [%] will appear. 100% indicates the full speed and 0% indicates the stop. • As the revolution of the fan changes under control, at the interphase or when the indoor unit operation capacity is low, the revolution of the fan may change. • When the fan does not work or an abnormal vibration occurs, the FAN board is defective, or the fan motor runs under open phase or opposite phase. (The microcomputer detects the open phase or the opposite phase of the main power source, however, these malfunctions may occur when doing other service work or when the lead wire for the fan motor is intentionally replaced.) • When the only one fan is running and the other fans are stopped, check the 52F output state on the LED screen first and check the fan connector and 52F connector misconnection, 52F failure, or the lead wire disconnection. - 137 - 5. LEV (1) Indoor LEV The valve opening angle changes in proportion to the number of pulses. (Connections between the indoor unit’s control board and indoor LEV.) Indoor control board Wire joining connecter 2 Brown φ6 5 Red φ5 φ4 1 Blue φ4 φ4 2 φ3 3 Orange φ3 φ3 3 φ2 4 Yellow φ2 φ2 φ1 6 White φ1 φ1 LEV 4 6 M 5 1 DC12V Indoor unit connecter CN60 Pulse signal output and valve operation Output state Output (Phase) 1 1 2 3 4 ON OFF OFF ON 2 ON ON OFF OFF 3 OFF ON ON OFF 4 OFF OFF ON ON Output pulses change in the following orders when the Valve is closed; 1→2→3→4→1 Valve is open; 4→ 3 → 2 → 1 → 4 ❉1. When the LEV opening angle does not change, all the output phases are off. ❉2. When the output is out of phase or remains ON continuously, the motor cannot run smoothly, but move jerkily and vibrates. LEV valve closing and valve opening operation D ❉ When the power is switched ON, a 2200 pulse valve C opening signal is output to make sure the valve’s position, so that it is definitely at point A . Valve opening ❉ When the valve operates smoothly, there is no sound from the LEV and no vibration occurs, but when the Closing of valve valve is locked or E → A , it emits a noise . Opening of valve ❉ Whether a sound is being emitted or not can be determined by holding a screwdriver, etc. against it, then placing your ear against the handle. A 1400 pulses E B LEV pulses 80 ~ 100 pulses - 138 - (2) Outdoor LEV The valve opening angle changes in proportion to the number of pulses. (Connections between the outdoor unit’s MAIN board and LEV1.) Outdoor MAIN board DC12V φ6 Red 6 4 φ5 Brown 5 M 6 φ4 Blue 4 φ4 Orange 3 φ3 2 3 φ3 5 φ2 Yellow 2 φ2 φ1 White 1 φ1 LEV 1 Drive circuit Outdoor main board connectors: (CNLV1) Pulse signal output and valve operation Output states Output (Phase) 1 2 3 4 5 6 7 8 φ1 ON OFF OFF OFF OFF OFF ON ON φ2 ON ON ON OFF OFF OFF OFF OFF φ3 OFF OFF ON ON ON OFF OFF OFF φ4 OFF OFF OFF OFF ON ON ON OFF Output pulses change in the following orders when the Valve is closed; 1→2→3→4→5→6→7→8→1 Valve is open; 8→7→6→5→4→3→2→1→8 ❉ 1. When the LEV opening angle does not change, all the output phases are off. 2. When the output is out of phase or remains ON continuously, the motor cannot run smoothly, but move jerkily and vibrates. LEV valve closing and valve opening operation ❉ When the power is switched ON, a 520 pulse valve opening signal is output to make sure the valve’s position, so that it is definitely at point A . Pulse signal is output for approximately 17 seconds. Valve opening angle (Flow rate) B ❉ When the valve operates smoothly, there is no sound Valve closing from the LEV and no vibration occurs, but when the valve is locked, it emits a noise. Valve opening ❉ Whether a sound is being emitted or not can be determined by holding a screwdriver, etc. against it, then placing your ear against the handle. Fully open 480 pulses ❉ If there is liquid refrigerant inside the LEV, the sound A may become lower. Pulse count - 139 - (3) Judgment methods and likely failure mode Caution: The specifications of the outdoor unit (outdoor LEV) and indoor unit (indoor LEV) differ. For this reason, there are cases where the treatment contents differ, so follow the treatment specified for the appropriate LEV as indicated in the right column. Failure mode Microcomputer driver circuit failure Judgment method 1. Disconnect the control board connector and connect the check LED as shown in the figure below. Treatment Affected LEV In the case of driver circuit failure, replace the control board. Indoor Outdoor 6 5 4 3 2 1 1kΩ LED When the base power supply is turned on, the indoor LEV outputs pulse signals for 10 seconds, the outdoor LEV outputs pulse signals for 17 seconds. If the LED does not light up, or lights up and remains on, the driver circuit is abnormal. LEV mechanism is locked 1. If the LEV is locked up, the drive motor turns with no load and a small clicking sound is generated. Generation of this sound when the LEV is fully closed or fully open is abnormal. Replace the LEV. Indoor Outdoor The LEV motor coils have a disconnected wire or is shorted Measure the resistance between the coils (red - white, red orange, brown - yellow, brown - blue) using a tester. They are normal if the resistance is within 150Ω ± 10%. Replace the LEV coils. Indoor Measure the resistance between the coils (gray - orange, gray - red, gray - yellow, gray - black) using a tester. They are normal if the resistance is within 46Ω ± 10%. Replace the LEV coils. Outdoor Fully closed failure (valve leaks) 1. If you are checking the indoor unit’s LEV, operate the indoor unit’s blower and the other indoor units in the cooling mode, then check the piping temperatures (liquid pipe temperatures) of the indoor units by the operation monitor through the heat source unit’s control board. When the fan is running, the linear expansion valve is fully closed, so if there is leakage, the temperature sensed by the thermistor (liquid pipe temperature sensor) will become low. If the temperature is considerably low compared Thermistor liquid to the remote control’s intake pipe (temperature sensor) temperature display, it can be judged that there is not a fully closed failure. In the case of Linear expansion minimal leakage, it is not necvalve essary to replace the LEV if there are no other effects. If there is a large amount of leakage, replace the LEV. Indoor Faulty wire connections in the connector or faulty contact. 1. Check for pins not fully inserted on the connector and check the colors of the lead wires visually 2. Disconnect the control board’s connector and conduct a continuity check using a tester. Check the continuity at the places where trouble is found. Indoor Outdoor - 140 - (4) Outdoor LEV coil removal procedure (configuration) As shown in the figure, the outdoor LEV is made in such a way that the coils and the body can be separated. Coils Body Stopper Lead wire Removing the coils: Fasten the body tightly at the bottom (Part A in the figure) so that the body will not move, then pull out the coils toward the top. If they catch on the stopper and are difficult to take out, turn the coils left and right until the stoppers are free from the stopper indentations, then pull the coils out. If you take out the coils without gripping the body, undue force may be applied to the piping and the pipe may be bent, be sure to fasten the body in such a way that it will not move. Part A Installing the coils : Fasten the body tightly at the bottom (Part A in the figure) so that the body will not move, then insert the coils from the top, inserting the coils’ stopper securely in one of the indentations on the body. (There are four indentations for the stopper on the body around its circumference, and it doesn’t matter which indentation is used. However, be careful not to apply undue force to the lead wires or twist them around inside the body.) If the coils are inserted without gripping the body, it may exert undue force on the piping, causing it to become bent, so be sure to hold the body firmly so that it won’t move when installing the coils. Part A - 141 - 6. Inverter and compressor a. Replace only the compressor if only the compressor is found to be defective. (Overcurrent will flow through the inverter if the compressor is damaged, however, the power supply is automatically cut when overcurrent is detected, protecting the inverter from damage.) b. Replace the defective components if the inverter is found to be defective. c. If both the compressor and the inverter are found to be defective, replace the defective component(s) of both devices. (1) Inverter related defect identification and countermeasures Error display/failure condition Measure/inspection item [1] Inverter related errors 4250, 4255, 4220, 4225, 4230, 4235, 4240, 4245, 4260, 4265, 5301, 0403, 5110 Check the details of the inverter error in the error log at 9.[1] Check Code List. Perform the measures corresponding to the error code and error details determined using 9.[2] Responding to Error Display on the Remote Controller. [2] Main power breaker trip a. Check the breaker capacity. b. Electrical system short circuit or grounding other than the inverter c. Refer to (3) - [1] if not a, or b. [3] Main power earth leakage breaker trip a. Earth leakage breaker capacity/sensitivity current check b. Meg defect for electrical system other than the inverter c. Refer to (3) - [1] if not a, or b. [4] Only the compressor does not operate. • Check the inverter frequency at the LED monitor and proceed to (2) - [3] if the status is operational. [5] The compressor always vibrates strongly or emits an abnormal noise. Go to (2) - [3]. [6] Only the fan motor does not operate. • Check the inverter frequency at the LED monitor and proceed to (2)-[6], [7] if status is operational. [7] The fan motor shakes violently at all times or makes an abnormal sound. • Check the inverter frequency at the LED monitor and proceed to (2)-[6], [7] if status is operational. [8] Noise has penetrated the peripheral device a. Check to ensure that power supply wiring, etc. of the peripheral device is not in close contact with the power supply wiring of outdoor unit. b. Check to ensure that the inverter output wiring is not in close contact with the power supply wiring and transmission lines. c. Check to ensure that the transmission line shield wiring is being used properly in the necessary environment, and that the shield wire ground is appropriate. d. Meg defect for electrical system other than the inverter. e. Attach a ferrite core to the inverter output wiring. (Please contact the factory for details of the service part settings.) f. Change the power to another system. g. If this problem occurs suddenly, there is a possibility that the inverter output is grounded. Proceed to (2) - [3]. • Contact the factory for cases other than those listed above. [9] Sudden malfunction (as a result of external noise.) a. Check to ensure that the unit is grounded. b. Check to ensure that the transmission line shield wiring is being used properly in the necessary environment, and that the shield wire ground is appropriate. c. Check to ensure that the neither the transmission line or external connection wiring run close to another power supply system or run through the same conduct pipe. • Contact the factory for cases other than those listed above. Notes: 1. Due to a large capacity electrolytic capacitor used in the inverter, voltage still flows through even after cutting the main power, creating the possibility of electric shock. As a result, wait for a sufficient length of time (5~10 minutes) after cutting the main power and check the voltage at both terminals of the electrolytic capacitor to performing any checks on the inverter. 2. Damage will result to the components of IPM, etc. if the inverter wiring is not properly secured with screws, or if the connector has not been properly inserted. It is likely that any errors occurring after replacing components are the result of wiring mistakes. Ensure that the wiring, screws, connectors and Faston, etc. are properly inserted. 3. Do not remove or insert inverter connectors with the main power supply on, as this will result in damage to the PCB. 4. The current sensor will be damaged if current flows without connecting to the PCB. Always insert connectors into the corresponding PCB when running the inverter. - 142 - (2) Treatment of inverter output related troubles Check item [1] Check the INV board error detection circuit. Perform the following: 1. Disconnect INV board CNDR2. After removing, turn on the outdoor unit and check the error status. (The compressor does not operate because CNDR2, which carries the IPM drive signal, has been disconnected.) Phenomena Treatment (1) IPM/overcurrent error. (4250 detailed No. 101, 102, 103, 104, 105, 106, 107) • Replace the INV board. (2) Logic error (4250 detail No.111) • Replace the INV board. (3) ACCT sensor circuit error. (5301 detailed No. 115) See to 9.[4].6.(4) "Current Sensor ACCT" Check the resistance and replace if erroneous. Replace the INV board if the ACCT status is normal. (4) DCCT sensor circuit error. (5301 detailed No. 116) • Replace the DCCT After replacing the DCCT, operate the outdoor unit again. In the case when the error occurs again, replace the INV board. (The DCCT may be no problem.) (5) IPM open error (5301 detail No.119) • Normal [2] Check for compressor ground fault or coil error. Disconnect the compressor wiring, and check the compressor Meg, and coil resistance. (1) Compressor Meg failure Error if less than 1MΩ. • When no refrigerant is accumulated in the compressor. (2) Compressor coil resistance failure Coil resistance value of 0.16Ω (20˚C) • Replace compressor Check whether the refrigerant is accumulating in the compressor again. [3] Check to see if the inverter is damaged. • Perform this check if an error occurs immediately before or after turning on the compressor. Perform the following: 1. Reconnect the connector removed at item [1]. 2. Disconnect the compressor wiring. 3. Turn on SW1-1 on the INV board. Operate the outdoor unit after above steps. Check the inverter output voltage. • It is recommend to use the teste rused to determine the 9.[4].6.(5) IPM troubleshooting when checking the inverter output voltage. (1) IPM/overcurrent error. (4250 detailed No. 101, 102, 103, 104, 105, 106, 107) • Refer to item [5] for inverter circuit trouble. (2) There is a high possibility of an inverter circuit error if the voltage unbalance across all wiring is greater than the larger of the values represented by 5% or 5V. (3) No voltage unbalance across all wiring See item [2]. Proceed to item [5] however if there is no problem at [2]. Replace the compressor if there is no problem at [5]. (1) There is a high possibility of an inverter circuit error if the voltage unbalance across all wiring is greater than the larger of the values represented by 5% or 5V. • Refer to item [5] for inverter circuit trouble. (2) No voltage unbalance across all wiring See item [2]. Proceed to item [5] however if there is no problem at [2]. Replace the compressor if there is no problem at [5]. • Measure when the inverter output frequency is stable. [4] Check to see if the inverter is damaged. • Perform this check if an error occurs during steady operation. Turn on the outdoor unit. Check the inverter output voltage. • It is recommend to use the teste rused to determine the 9.[4].6.(5) IPM troubleshooting when checking the inverter output voltage. • Measure when the inverter output frequency is stable. - 143 - Check item [5] Check the inverter circuit trouble. Phenomena Treatment 1. Check to see if the IPM screw terminal is loose. (1) Screw terminal is loose. Check all IPM screw terminals and tighten. 2. Check the exterior of the IPM. (2) IPM is cracked due to swelling. • IPM replacement Check the operation in [3] or [4] after replacing the IPM. In the case of an output voltage unbalance or error recurrence: →Replace the G/A board In the case of an output voltage unbalance or error recurrence after replacement: →Replace the INV board 3. Check the resistances between each terminal of IPM. Refer to 9.[4].6.(5) for details on IPM troubleshooting. (3) Resistance error between each terminal of IPM. • IPM replacement Check the operation in [3] or [4] after replacing the IPM. In the case of an output voltage unbalance or error recurrence: →Replace the G/A board In the case of an output voltage unbalance or error recurrence after replacement: →Replace the INV board (4) All normal for items (1) ~ (3) above. • IPM replacement In the case of an output voltage unbalance or error recurrence after replacement: →Replace the G/A board In the case of an output voltage unbalance or error recurrence after replacement: →Replace the INV board (1) Fan motor megger fault Fault when the megger is 1Ω or less. Replace the fan motor. [6] Check the fan motor grounding fault and the winding. Remove the wire for the outdoor fan motor and check the fan motor megger and the winding resistance. [7] Check the FAN board failure. 1. Check around the fan output wiring. Connector contact failure 1) Board side (CNINV) 2) Fan motor side Connect the connector 2. Check the connector CNVDC connection Connector contact failure Connect the connector 3. Check the FAN board failure. (1) The voltage unbalance among each motor. (The voltage unbalance is grerater than the larger of the values represented by 5% or 5V.) Replace the FAN board. (2) Fan motor disconnection Standard: The winding resistance is approximately several Ω. (It varies depending on the temperature or while the inner thermo is operating, it will be ∞Ω.) (2) The same error occurs even if operated again. 4. Check the transformation of the FAN board. The same error occurs even if the board is replaced as described in 3. - 144 - Replace the power-supply transformation for FAN board. (3) Trouble measures when main power breaker tripped Check item Phenomena Treatment [1] Perform Meg check between the terminals in the power terminal block TB1. (1) Zero to several ohm, or Meg failure. [2] Turn on the power again and check once more. (1) Main power breaker trip Check each part in the main inverter circuit. • Refer to "Simple checking Procedure for individual components of main inverter circuit". a. Diode Stack b. IPM c. Rush current protection resistor d. Electromagnetic relay e. DC reactor f. Noise filter (2) No remote control display [3] Turn on the outdoor unit and check that it operates normally. (1) Operates normally without tripping the main breaker. a. There is a possibility that the wiring shorted momentarily. Trace the short and repair. b. If a. above is not the case, there is a possibility that there was a compressor failure. (2) Main power breaker trip • A compressor ground fault can be considered. Go to (2) - [2]. (4) Simple checking procedure for individual components of main inverter circuit ✻ Before checking, cut the power off and remove the required parts from the control box. Part name Judgement method Diode stack Refer to "Determining diode stack troubleshooting" ( 9.[4].6.(6) ) IPM (Intelligent power module) Refer to "Determining IPM interference" ( 9.[4].6.(5) ) Rush current protection resistor R11, R12 Measure the resistance between terminals: 47Ω ± 10% Electromagnetic contactor (52C1, 52C2, 52F) [In the case of 52C1, 52C2] A1 13 L1 Checking position Judgement value A1-A2 0.1k~2.0kΩ A2 L2 L3 31 Button ON (pushdown) Pushbutton 1Ω or less (Almost 0Ω) L1-T1 L2-T2 L3-T3 14 T1 T2 T3 13-14 32 [In the case of 52F] A1 L1 L2 Button OFF A2 L3 13 31-32 ∞ L1-T1 ∞ L2-T2 L3-T3 13-14 Pushbutton 31-32 T1 T2 T3 1Ω or less (Almost 0Ω) 14 DC reactor DCL Measure the resistance between terminals: 1Ω or lower (almost 0Ω) Measure the resistance between terminals and the chassis : ∞ Current sensor ACCT Disconnect the CNCT2 target connector and check the resistance between terminals: 280Ω ± 30Ω ACCT-U 1-2PIN (U-phase) 3-4PIN (W-phase) W U U V IPM ACCT-W W ❉ Check the ACCT connecting phase and direction. - 145 - (5) Intelligent power module (IPM) Measure resistances between each terminal of IPM with tester, and use the results for troubleshooting Notes on measurement • Make sure the polarity before the measurement. (On the tester, black normally indicates plus.) • Make sure that the resistance is not open (∞Ω) or not shorted (to 0Ω). • For the resistance, the margin of error is allowed. • The result that is more than double or half than the result that is measured at the same measurement point is not allowed. Tester restriction • Use the tester whose internal electrical power source is 1.5V or greater. • Use the dry-battery-powered tester. (✻The accurate diode-specific resistance cannot be measured with the button-battery-powered card tester, as the applied voltage is low.) • Use the range that measures low resistance as much as possible. The more accurate resistance can be measured. • External view • Internal circuit diagram P 3 2 U W V N 5 B 7 4 Pre-Driver V 4 9 8 10 U 1 6 P 16 Pre-Driver Pre-Driver W 7 1 11 13 • Judgement value 14 Black (+) Red Pre-Driver 10 P N U V (–) 15 P – 5~200Ω 5~200Ω ∞ N – U ∞ 5~200Ω V ∞ 5~200Ω – W ∞ 5~200Ω – Pre-Driver W Pre-Driver 5~200Ω ∞ ∞ – – B 12 N – Over heating protection circuit 16 Temperature sensor – (6) Diode stack Measure resistances between each terminal of diode stack with tester, and use the results for troubleshooting. Refer to (5) “ Intelligent power module (IPM) ” for notes on measurement and tester restriction. • Judgement value Black (+) Red + (P) + (P) 1 2 3 + 1 2 3 — - 146 - - (N) ~ (1) ~ (2) ~ (3) (–) – 5~200Ω 5~200Ω ∞ - (N) – ~ (1) ∞ 5~200Ω ~ (2) ∞ 5~200Ω – ~ (3) ∞ 5~200Ω – 5~200Ω ∞ ∞ – – – – (7) Caution at replacement of inverter parts (1) Fully check wiring for incorrect and loose connection. The incorrect or loose connection of the power circuit part wiring like IPM and diode module causes to damage the IPM. Therefore, check the wiring fully. As the insufficient tightening of screws is difficult to find, tighten them together additionally after finishing other works. For the wiring of the base for IPM, observe the wiring diagram below carefully as it has many terminals. (2) Coat the grease for radiation provided uniformly onto the radiation surface of IPM /diode modules. Coat the grease for radiation on the full surface in a thin layer, and fix the module securely with the screw for fastening. As the radiation grease attached on the wiring terminal causes poor contact, wipe it off if attached. Motor (Compressor) Red White Black IPM U V W N G/A board - 147 - P Black Red Capacitor (C11, C12) 7. Control circuit (1) Control power source function block [ P200~P400 types ] Power source system Control system (DC5~30V) TB1 Noise filter AC380~415V Terminal block for power source Rectifier Smoothing capacitor 52C1 Compressor Inverter G/A board Fuse (6.3A) Fuse (10A) Heat exchanger fan IPM IPM drive circuit 52C1 Relay,LEV drive circuit 52C1 Solenoid valve 4-way valve IPM drive circuit Fuse (2A) Microcomputer Transformer 5V Power source 15V Power source 12V Power source DC/DC converter 15V Power source 5V Power source Rectifier FAN control board TB7 Terminal block for centralized control (DC24 ~ 30V) TB3 Terminal block for transmission line (DC24 ~ 30V) M-NET transmission line (Non-polar 2-wire line) Microcomputer 12V Power source CN40 Control circuit board Power circuit board TB2 AC220~240V Terminal block for power source TB15 Indoor unit MA remote controller TB5 terminal block To next unit (Indoor unit) Transmission terminal block DC17~30V A,B MA remote controller line (Non-polar 2-wire line) DC17~30V M-NET remote controller A,B or 1,2 DC8.5~12V Cooling fan drive circuit Microcomputer 7V Power source 30V Power supply for centralized control Power Power supply for transmission line source 5V Power source MA remote controller ❉ M-NET remote controller and MA remote controller can not be used together. - 148 - ❉ Outdoor unit Cooling fan [ P450~P650 types ] Power source system Control system (DC5~30V) 51C2 Fuse (50A) 52C2 No.2 Compressor TB1 AC380~415V Terminal block for power source Rectifier Noise filter Smoothing capacitor 52C1 No.1 Compressor Inverter G/A board 52F 52C2 Heat exchanger fan Fuse (6.3A) Relay board Fuse (10A) 52F Heat exchanger fan 52F 52C2 drive circuit IPM IPM drive circuit 52C1, 52C2 Relay,LEV drive circuit 52C1 Solenoid valve 4-way valve IPM drive circuit Fuse (2A) Microcomputer Transformer 5V Power source 15V Power source 12V Power source DC/DC converter 15V Power source 5V Power source Rectifier FAN control board TB7 Terminal block for centralized control (DC24 ~ 30V) TB3 Terminal block for transmission line (DC24 ~ 30V) M-NET transmission line (Non-polar 2-wire line) Microcomputer Cooling fan drive circuit 12V Power source Microcomputer 7V Power source 5V Power source Power supply for centralized control CN40 Power supply for transmission line Control circuit board 30V Power source Power circuit board TB2 AC220~240V Terminal block for power source TB15 Indoor unit MA remote controller TB5 terminal block To next unit (Indoor unit) Transmission terminal block DC17~30V A,B MA remote controller line (Non-polar 2-wire line) DC17~30V M-NET remote controller A,B or 1,2 DC8.5~12V MA remote controller ❉ M-NET remote controller and MA remote controller can not be used together. - 149 - ❉ Outdoor unit Cooling fan (2) Outdoor unit transmission power source circuit failure judgment Check voltage of indoor/outdoor transmission terminal block (TB3) of outdoor unit. DC24 ~ 30V YES Check and modify transmission line for disconnection & poor contact NO Check voltage of TB3 by removing transmission line from TB3. DC24 ~ 30V YES Check and modify indoor/outdoor transmission line for short circuit. NO Check whether power supply connector is replaced with CN40. NO Replaced YES Check voltage of terminal block for centralized control (TB7). DC24 ~ 30V YES NO Check voltage of TB7 by removing transmission line from TB7. DC24 ~ 30V YES Check wiring between connectors (CNS1 and TB3). Check pulling off of connector (CNS1). Connector being pulled off? NO YES Modify pulling off of connector. Check and modify shorting of transmission line for centralized control. NO Check voltage between 1 and 2, and 1 and 3 of main board CNVCC1 DC24 ~ 30V YES Replace main board. NO Check voltage between 1 and 2, and 1 and 3 of main board CNVCC1 DC24 ~ 30V YES NO Check connector (CNL1 and CNL2) on filter board for pulling off. Connector being pulled off? YES Check and modify wiring between main board connector (CNVCC1) and INV board connector (CNVCC1). Modify pulling off of connector. NO Check voltage between 1 and 3 of INV board CNDC2. DC517 ~ 587V YES Replace INV board. NO Check voltage of outdoor unit power source terminal block TB1. AC342 ~ 457V NO Confirm and modify power source wiring and main power source. YES Check connector on outdoor unit board for pulling off. INV board : CNDC2 G/A board : CNDC1 NO Connector being pulled off? YES Modify pulling off of connector. NO Check wiring inside outdoor unit. G/A board : CNDC1 – INV board : CND2 Faulty wiring? YES Modify wiring. NO Check fuse (F02) on INV board. Damaged? YES Replace fuse. NO Check rush current protection resistance. 42 ~ 52Ω NO Replace rush current protection resistor. YES Check diode stack. Broken? YES Replace diode stack. NO - 150 - Apply power source again. [5] Refrigerant Leak 1. Leak spot: In the case of extended pipe for indoor unit (Cooling season) 1 Mount a pressure gauge on the check joint (CJ2) for low-pressure service. 2 Stop all the indoor units, and close the liquid ball valve (BV2) inside the outdoor unit while the compressor is being stopped. 3 Stop all the indoor units; turn on SW3-6 on the outdoor unit main board while the compressor is being stopped. (Pump down mode will start, and all the indoor unit will perform a test run in cooling mode.) 4 Under the pump down mode (SW3-6 is ON), the low-pressure pressure (LPS) becomes 0.382MPa or less, or all the indoor units automatically stop in 15 minutes after the pump mode starts. When the value of the pressure gauge, which is on the check joint (CJ2) for low-pressure service, is 0.284MPa or when 20 minutes pass, stop all the indoor units and the compressor. 5 Close the gas ball valve (BV1) inside the outdoor unit. 6 Wipe the refrigerant that remains in the extended pipe for the indoor unit. Do not discharge refrigerant into air into the atmosphere when it is collected. 7 Repair the leak. 8 After repairing the leak, vacuum the extended pipe for the indoor unit. 9 To adjust refrigerant, open the ball valves (BV1 and BV2) inside the outdoor unit and turn off SW3-6. 2. Leak spot: In the case of outdoor unit (Cooling season) 1 Conduct a test run for all the indoor units under the cooling mode. (1) To start a test run for all the indoor units, turn on SW3-2 when SW3-1 on the outdoor unit main board is ON. (2) Change the setting of the remote controller for all the indoor units to the cooling mode. (3) Check that all the indoor units are performing a cooling operation. 2 Check the values of Tc and TH7. (To display the values on the LED screen, use the self-diagnosis switch (SW1) on the outdoor unit main board.) (1) When Tc-TH7 is 10K or more ···· See the next item 3. (2) When Tc-TH7 is less than 10K ···· After the compressor stops, wipe the refrigerant inside the system, repair the leak, perform evacuation, and recharge new refrigerant. (Leak spot: In the case of outdoor unit, handle in the same way as heating season.) [ Tc self-diagnosis switch ] 1 2 3 4 5 6 [ TH7 self-diagnosis switch ] 7 8 9 10 1 2 3 4 5 ON 6 7 8 9 10 ON 3 Stop all the indoor units, and stop the compressor. (1) To stop all the indoor units and the compressor, turn off SW3-2 when SW3-1 on the outdoor unit main board is ON. (2) Check that all the indoor units are being stopped. 4 Close the ball valves (BV1 and BV2). 5 To prevent the liquid seal, extract small amount of refrigerant from the check joint of the liquid ball valve (BV2), as the liquid seal may cause a malfunction of the unit. 6 Collect the refrigerant that remains inside the outdoor unit. Do not discharge refrigerant into air into the atmosphere when it is collected. 7 Repair the leak. 8 After repairing the leak, replace the dryer with the new one, and perform evacuation inside the outdoor unit. 9 To adjust refrigerant, open the ball valves (BV1 and BV2) inside the outdoor unit. Note : When the power for the outdoor/indoor unit must be turned off to repair the leak after closing the ball valves specified in the item 4, turn the power off in approximately one hour after the outdoor/indoor units stop. a) If the power for the outdoor unit is turned off within 30 minutes after the item 4, → When the stop mode continues for 30 minutes in a row, the indoor unit LEV turns from fully closed to faintly open to prevent the liquid seal inside the liquid pipe. Therefore, when the power for the indoor unit is turned off within 30 minutes after the outdoor unit stops, liquid will be sealed. b) Even if the outdoor unit LEV turns from fully closed to faintly open within 30 minutes after the outdoor unit stops, do not turn off the power for indoor/outdoor unit until the refrigerant inside the liquid pipe discharges into the indoor unit and into the gas pipe. → When only the power for the indoor unit is turned off, the indoor unit LEV turns from faintly open to fully closed. - 151 - 3. Leak spot: In the case of extended pipe for indoor unit (Heating season) 1 Conduct a test run for all the indoor units under the heating mode. (1) To start a test run for all the indoor units, turn on SW3-2 when SW3-1 on the outdoor unit main board is ON. (2) Change the setting of the remote controller for all the indoor units to the heating mode. (3) Check that all the indoor units are performing a heating operation. 2 Stop all the indoor units, and stop the compressor. (1) To stop all the indoor units and the compressor, turn off SW3-2 when SW3-1 on the outdoor unit main board is ON. (2) Check that all the indoor units are being stopped. 3 Close the ball valves (BV1 and BV2). 4 Collect the refrigerant that remains inside the outdoor unit. Do not discharge refrigerant into air into the atmosphere when it is collected. 5 Repair the leak. 6 After repairing the leak, perform evacuation of the extended pipe for the indoor unit, and open the ball valves (BV1 and BV2) to adjust refrigerant. 4. Leak spot: In the case of outdoor unit (Heating season) 1 Collect the refrigerant in the entire system (outdoor unit, extended pipe and indoor unit). Do not discharge refrigerant into the atmosphere when it is collected. 2 Repair the leak. 3 After repairing the leak, replace the dryer with the new one, and perform evacuation of the entire system, an calculate the standard amount of refrigerant to be added (for outdoor unit, extended pipe and indoor unit), and charge the refrigerant. For the amount of refrigerant, refer to 8.[4].3. - 152 - [6] Compressor Replacement Instructions (only P450-P650 types) Follow the instructions below when replacing the compressor. When replacing the compressor No.1 (inverter drive), start replacing after judging whether the compressor is malfunctioning or the inverter is malfunctioning. When only one compressor is malfunctioning, operate the compressor for approximately an hour under emergency operation mode before the replacement, check the items below, and replace the compressor after examining whether the return oil circuit is working properly or not. Refer to the right chart for the temperature of each part. < When normal > 1 Temperature of A = Temperature of C, and Temperature of A > Outdoor temperature + 10deg 2 Temperature of B = Temperature of C, and Temperature of B > Outdoor temperature + 10deg < When abnormal > When 1 is abnormal (out of range) Return oil failure due to SV1 circuit failure → Replace SV1 circuit. When 2 is abnormal (out of range) Return oil failure due to capillary blockage → Replace the capillary Compressor Four-way/Valve Oil separator SV1 A C B Capillary (1) Make sure that the main power is OFF. When replacing the compressor due to megger fault and the megger is 1Ω or more, megger drop is likely due to the liquified refrigerant gas entering and accumulating in the compressor. Turn the power off after powering the crankcase heater at least 12 hours, and apply megger again. (2) Remove the fin guard, the front panel and the front partition plate on the right (as you face the front). (3) Drain the refrigerant from the check joint for high and low-pressure service. When collecting refrigerant from the accumulator, perform proper work with the reference of the liquid refrigerant collecting method from the accumulator. (4) Drain the refrigerating machine oil from the drain oil pipe that is located on the equal oil pipe. Note : When draining the oil, prepare an approximately 10-liter container. Note : Keep draining oil until the oil in the drain oil plug clears up. Note : Keep track of the amount of drained oil, as the same amount of oil will be added. Note : Do not splash oil. Note : Do not leave the refrigerant circuit open for a long time, as the oil rapidly absorbs moisture. Note : The drained oil cannot be recycled. (5) After draining oil from the refrigerant and the drain oil plug, remove the metal fitting-1 or the flare nuts (2 places) that connect the compressor and the equal oil pipe, and bend the equal oil pipe so as not to apply an excess force. (6) Close the equal oil pipe attachment point with a cap to prevent the oil from leaking. (7) Remove the compressor terminal cover, and remove the power supply wiring. (8) Remove the sound-proof material that is winded around the discharge temperature thermistor and the compressor. (9) Remove the crankcase heater. (10) Heat the brazing part of the discharge pipe and the suction pipe, and remove the pipes. (11) Remove the compressor fixing nut and the metal fitting-2 (3 places for compressor-2). (12) Replace the compressor with the service compressor. (13) Braze the discharge pipe and the suction pipe. (14) Attach the equal oil pipe to both compressors. Replace the dryer with the new one. After replacing the dryer, do not leave the refrigerant circuit open for long time. Note : When replacing the compressor and when the equal oil pipe is damaged or irreparably deformed, after replacing the compressor, heat the junction of the equal oil pipe, remove the equal oil pipe, and braze the service equal oil pipe. (15) Close the ball valves in the outdoor unit (both on the liquid and the gas side), and pressurize up to 4.15MPa with nitrogen from the check joint for high and low-pressure service. (16) After confirming the airtightness, emit nitrogen gas. (17) Open the ball valves in the outdoor unit (both on the liquid and the gas side), and perform vacuuming. (18) While vacuuming, add the same amount of oil that is drained from the drain oil plug on the equal oil pipe in the procedure (4). Note : The oil to be added must be MEL32 made by Nisseki Mitsubishi. When adding oil, the oil must not absorb moisture, and do not use the oil that is over a year old. Note : Do not drain the oil in the compressor and return the oil, as it will be used to examine for reasons for the compressor malfunction. - 153 - (19) Attach the crankcase heater. Note : Attach the appropriate crankcase heater to the appropriate compressor. (20) Attach the soundproof material to the compressor. (21) Attach the discharge tempareture themistor, and attach the insulation cover. (22) Attach the power source wire to the terminal on the compressor. (23) After vacuuming, calculate the amount of added refrigerant at factory shipment and the amount of added refrigerant on site, and charge the system. (24) After reconfirming the power source-wiring phase, apply a megger, attach the terminal cover, turn on the main power, and check whether the crankcase heater is powered. (25) Check that the ball valves (both on the liquid and the gas side) are open. (26) Operate all the indoor units, and check whether they run properly. (27) If there is something that needs to be improved in the installation or the usage, explain that to the customers. Compressor1 Soundproof material Compressor2 Equal oil pipe joint Drain oil plug Metal fitting1 Flare nut Equal oil Flare nut Metal fitting2 Check joint for draining liquid [7] Collecting the Cooling Liquid from the Accumulator (Only P450-P650 types) (1) Perform evacuation inside the recovery cylinder. (2) Connect the check joint for collecting liquid that is derived from the accumulator and the recovery cylinder with a connection pipe (or hose that has predetermined withstand pressure). Note : When connecting the check joint and the connecting pipe (hose), extremely low-temperature oil may flow out. Use some protective equipment, such as leather gloves. (3) Open the valves of the recovery cylinder while the recovery cylinder is being weighed, and collect the liquid inside the accumulator into the cylinder. Note : Allow some capacity when collecting the liquid so that the recovery cylinder will not be flooded. Use several cylinders when collecting large amount of liquid. (4) After collecting the liquid, close the valve of the recovery cylinder, and remove the connecting pipe (hose). Note : When removing the check joint and the connecting pipe (hose), extremely low-temperature oil may flow out. Use some protective equipment, such as leather gloves. (5) Charge 3-liter oil from the check joint of the accumulator during evacuation. - 154 - 0 LED display [1] LED Monitor Display 1. How to read LED for service monitor By setting of DIP SW1-1 ~ 1-10, the unit operating condition can be observed with the service LED on the control circuit board. (For the relation of each DIP SW to the content, see the table provided.) As shown in the figure below, the LED consist of 7 segments is put in 4 sets side by side for numerical and graphic display. OC IC : Outdoor unit : Indoor unit L SW1 : E : SV EV : Solenoid valve : Electronic expansion valve COMP : Compressor THHS : Inverter radiator panel Th : Thermistor Outdoor unit control circuit board Memory storage for service activities (sampling per minute) 7 seg LED The numerical display includes that of pressure, temperature or the like, while the graphic display includes that of operating condition, solenoid valve ON/OFF state or the like. • Numerical display Example : Display at 18.8kg/cm2G (1.84MPa) of pressure sensor data (Item No. 72) • Graphic display (Two LEDs aligned vertically express a flag.) Example : At forcible powering in outdoor unit operation display (Item No. 14) LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 2. LED display at initial setting After turning the power on, the following model information will be displayed until the initial setting is done. (Repeat No1 → 2 → 3 → 4) No SW1 Item Display Remark 1 Software version [0103] ········ Version1.03 2 Refrigerant type [ 410] ········ R410A Irrelevant 3 4 [C-08] ········ PUY 8 horsepower Unit type & capacity [H-20] ········ PUHY 20 horsepower [r-10] ········ PURY 10 horsepower M-NET address [ 51] ········ 51 address This LED display can be seen after the initial setting when No517, monitor display, setting is made. - 155 - 3. Time data storage function ❉ This function is not compatible with some units. The outdoor unit has a simple clock function to receive the time setting from the system controller, such as the G50A, and count the current time with an internal timer. If an error (prediction) occurs, the error history data and the error detection time are saved in the service memory. The error detection time saved in the service memory and the current time can be confirmed with the service LEDs. Notes: 1. This is a simple clock function so the time should be used only for reference. 2. The date and time data is all set to 00 as the default. If a system controller that sets the time in the outdoor unit, such as the G50A, is not connected, the time and days elapsed from the first time the power was turned on will be displayed. If the time setting has been received, the count will start from the set date and time. 3. The time data is not updated when the outdoor unit's power is off. When the power is turned off and then on again, the count will resume from the time before the power was turned off. Thus, a time differing from the actual time will be saved. (This also applies when a power failure occurs) The system controller, such as the G50A, sets the time once a day. Thus, if this type of system controller is connected, the time will be updated to the correct time after the settings are received. (The data stored in the memory before the settings are received will not be corrected.) Reading the time data: • For time display Example : 9 hours 12 minutes " . " disappears if the time data is deviated due to a power failure, or if a system controller for setting the time is not connected. • Date display (1) When upward controller that can set time is connected Example : May 10, 2003 Alternate display Year Month Date ❉ The year and month display uses " . ". The date display has no " . ". (2) When upward controller that can set time is not connected Example : 52 days after power was turned ON Alternate display Day count ❉ The year and month display uses " . ". The date display has no " . ". - 156 - 4. List of code on the LED monitor LED monitor display The following abbreviations are used in this table. IC : Indoor unit, OC : Outdoor unit No. SW1 1234567890 0 LED Item 0000000000 Relay output display 1 (lighting to display) LD1 LD2 LD3 Comp operation Comp 1 operation Comp 2 operation Check display 1 OC error LD4 LD5 LD6 52C1 52C2 LD7 LD8 Lights for normal operation 0000 ~ 9999 (Address and error code reversed) Remarks LD8 is a relay output which lights up at all times when the microcomputers power is on. 1 1000000000 Check display 2 OC preliminary error 0000 ~ 9999 (Address and error code reversed) Display the latest preliminary error. If there is no error, "----" is displayed. 2 0100000000 Check code 3 (including IC and BC) 0000 ~ 9999 (Address and error code reversed) If there is no error "----" is displayed. 3 1100000000 Relay output display 2 21S4a 4 0010000000 Relay output display 3 SV1 5 1010000000 Relay output display 4 6 0110000000 7 1110000000 Special operation 8 0001000000 9 1001000000 Communication demand capacity 0000 ~ 9999 If no demand control, "----" is diaplayed [ % ]. 10 0101000000 Contact demand capacity 0000 ~ 9999 If no demand control, "----" is diaplayed [ % ]. 11 1101000000 External signal [signal during input] 21S4b 21S4c CH11 CH12 SV3 SV5b SV5c 52F Temporary Retry operation operation Contact demand Night mode Snow Cooling and Cooling and sensor heating heating mode mode selection selection (Cooling) (Heating) 12 0011000000 13 1011000000 14 0111000000 Outdoor unit operation display Warm up mode 3 minutes Compressor Preliminary restart operation error protection mode Error 3 minutes Vacuum restart afte operation instanta- protection neous po- delayed wer failure Unit No.1 Unit No.2 Unit No.3 Unit No.4 Unit No.5 Unit No.6 Unit No.7 Unit No.8 23 1110100000 Indoor unit operation Unit No.1 mode Unit No.9 24 0001100000 Unit No.2 Unit No.3 Unit No.4 Unit No.5 Unit No.6 Unit No.7 Unit No.8 15 1111000000 16 0000100000 Indoor unit check 17 1000100000 18 0100100000 19 1100100000 If the IC makes an error stop, lit up Unit Unit No.9 Unit No.10 Unit No.11 Unit No.12 Unit No.13 Unit No.14 Unit No.15 Unit No.16 No.1 can be lit out with error Unit No.17 Unit No.18 Unit No.19 Unit No.20 Unit No.21 Unit No.22 Unit No.23 Unit No.24 rest in order from small address. Unit No.25 Unit No.26 Unit No.27 Unit No.28 Unit No.29 Unit No.30 Unit No.31 Unit No.32 20 0010100000 21 1010100000 22 0110100000 25 1001100000 Lights up during cooling. Unit No.10 Unit No.11 Unit No.12 Unit No.13 Unit No.14 Unit No.15 Unit No.16 Blinks during heating. Goes off during stop Unit No.17 Unit No.18 Unit No.19 Unit No.20 Unit No.21 Unit No.22 Unit No.23 Unit No.24 and blower mode. 26 0101100000 Unit No.25 Unit No.26 Unit No.27 Unit No.28 Unit No.29 Unit No.30 Unit No.31 Unit No.32 27 1101100000 28 0011100000 29 1011100000 - 157 - No. SW1 LED Item 1234567890 LD1 LD2 LD3 LD4 Unit No.1 Unit No.2 Unit No.3 LD5 Unit No.4 Unit No.5 LD6 LD7 LD8 Unit No.6 Unit No.7 Unit No.8 Remarks 30 0111100000 31 1111100000 32 0000010000 Lights up when thermostat is on. Unit No.9 Unit No.10 Unit No.11 Unit No.12 Unit No.13 Unit No.14 Unit No.15 Unit No.16 Goes off when thermostat is off. Unit No.17 Unit No.18 Unit No.19 Unit No.20 Unit No.21 Unit No.22 Unit No.23 Unit No.24 33 1000010000 Unit No.25 Unit No.26 Unit No.27 Unit No.28 Unit No.29 Unit No.30 Unit No.31 Unit No.32 34 0100010000 35 1100010000 36 0010010000 37 1010010000 38 0110010000 39 1110010000 Outdoor operation mode 40 0001010000 41 1001010000 42 0101010000 Outdoor unit control mode 43 1101010000 44 0011010000 45 1011010000 TH11 -99.9 ~ 999.9 46 0111010000 TH12 ↑ 47 1111010000 48 0000110000 TH5 -99.9 ~ 999.9 49 1000110000 TH6 ↑ 50 0100110000 TH7 ↑ 51 1100110000 TH8 ↑ 52 0010110000 53 1010110000 54 0110110000 55 1110110000 56 0001110000 57 1001110000 58 0101110000 59 1101110000 60 0011110000 61 1011110000 62 0111110000 63 1111110000 64 0000001000 65 1000001000 66 0100001000 67 1100001000 68 0010001000 69 1010001000 70 0110001000 Indoor unit thermostat Pemissable stop Standby Cooling Stop Thermo OFF Error stop Heating Regular control Initial start Defrost Oil Low recovery frequency oil collection Warm up Refrigerant collection THHS1 -99.9 ~ 999.9 THHS5 -99.9 ~ 999.9 - 158 - The unit is [ ˚C ]. The unit is [ ˚C ]. No. SW1 LED Item 1234567890 LD1 LD2 LD3 LD4 LD5 71 1110001000 72 0001001000 High pressure -99.9 ~ 999.9 73 1001001000 Low pressure ↑ 74 0101001000 75 1101001000 76 0011001000 77 1011001000 78 0111001000 Σ Qj 79 1111001000 Σ Qjc ↑ 80 0000101000 Σ Qjh ↑ 81 1000101000 Target condensor temp. Tc -99.9 ~ 999.9 82 0100101000 Target condensor temp. Te ↑ 83 1100101000 Tc ↑ 84 0010101000 Te ↑ 85 1010101000 86 0110101000 87 1110101000 All temporary frequency 0000 ~ 9999 88 0001101000 COMP1 control frequency ↑ 89 1001101000 COMP2 control frequency ↑ 90 0101101000 91 1101101000 COMP1 output frequency 92 0011101000 93 1011101000 94 0111101000 95 1111101000 96 0000011000 97 1000011000 FAN1 98 0100011000 99 1100011000 AK1 100 0010011000 Number of fans being used LD6 LD7 LD8 Remarks The unit is [ kgf/cm2 ]. 0000 ~ 9999 The unit is [ ˚C ]. Control data [ Hz ]. 0000 ~ 9999 Frequency that is output from inverter [ Hz ]. 0000 ~ 9999 Control data 0000 ~ 9999 Fan inverter output [ % ]. 0000 ~ 9999 101 1010011000 102 0110011000 103 1110011000 0 ~ 480 104 0001011000 LEV1 Outdoor LEV opening pulses (Fully open: 480) 105 1001011000 106 0101011000 107 1101011000 108 0011011000 COMP1 operation current (DC) -99.9 ~ 999.9 109 1011011000 110 0111011000 - 159 - Peak value [ A ]. No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks COMP1 bus voltage 0000 ~ 9999 The unit is [ V ]. 117 1010111000 Compressor 1 operatin time upper 4 digits. 0000 ~ 9999 The unit is [ h ]. 111 1111011000 112 0000111000 113 1000111000 114 0100111000 115 1100111000 116 0010111000 118 0110111000 Compressor 1 operatin time lower 4 digits. ↑ 119 1110111000 Compressor 2 operatin time upper 4 digits. ↑ 120 0001111000 Compressor 2 operatin time lower 4 digits. ↑ 123 1101111000 COMP 1 number of starts and stops upper 4 digits. 0000 ~ 9999 124 0011111000 COMP 1 number of starts and stops lower 4 digits. ↑ 125 1011111000 COMP 2 number of starts and stops upper 4 digits. ↑ 126 0111111000 COMP 2 number of starts and stops lower 4 digits. ↑ 121 1001111000 122 0101111000 127 1111111000 128 0000000100 129 1000000100 130 0100000100 131 1100000100 132 0010000100 133 1010000100 134 0110000100 135 1110000100 136 0001000100 137 1001000100 138 0101000100 139 1101000100 140 0011000100 141 1011000100 142 0111000100 143 1111000100 144 0000100100 145 1000100100 146 0100100100 147 1100100100 148 0010100100 149 1010100100 - 160 - Count up when starting up. [ Time ] No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 150 0110100100 151 1110100100 152 0001100100 153 1001100100 154 0101100100 155 1101100100 156 0011100100 157 1011100100 158 0111100100 159 1111100100 160 0000010100 161 1000010100 162 0100010100 163 1100010100 164 0010010100 165 1010010100 166 0110010100 167 1110010100 168 0001010100 169 1001010100 170 0101010100 171 1101010100 172 0011010100 173 1011010100 174 0111010100 175 1111010100 176 0000110100 177 1000110100 178 0100110100 Error history 1 179 1100110100 Inverter error detail 180 0010110100 Error history 2 181 1010110100 Inverter error detail 182 0110110100 Error history 3 183 1110110100 Inverter error detail 184 0001110100 Error history 4 185 1001110100 Inverter error detail 186 0101110100 Error history 5 187 1101110100 Inverter error detail 188 0011110100 Error history 6 189 1011110100 Inverter error detail 190 0111110100 Error history 7 191 1111110100 Inverter error detail 192 0000001100 Error history 8 0000 ~ 9999 Inverter error detail (0001 ~ 0120) 0000 ~ 9999 Inverter error detail (0001 ~ 0120) 0000 ~ 9999 Inverter error detail (0001 ~ 0120) 0000 ~ 9999 Inverter error detail (0001 ~ 0120) 0000 ~ 9999 Inverter error detail (0001 ~ 0120) 0000 ~ 9999 Inverter error detail (0001 ~ 0120) 0000 ~ 9999 Inverter error detail (0001 ~ 0120) 0000 ~ 9999 - 161 - Address and error code are reversed and displayed. "----" is displayed when there is no error. No. SW1 LED Item 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Inverter error detail (0001 ~ 0120) 193 1000001100 Inverter error detail 194 0100001100 Error history 9 Address and error code are reversed and displayed. "----" is displayed when there is no error. 0000 ~ 9999 Inverter error detail (0001 ~ 0120) 195 1100001100 Inverter error detail Remarks 0000 ~ 9999 196 0010001100 Error history 10 197 1010001100 Inverter error detail Inverter error detail (0001 ~ 0120) 198 0110001100 Inverter error history (when saving data before an error) 0000 ~ 9999 199 1110001100 Inverter error detail Inverter error detail (0001 ~ 0120) 200 0001001100 201 1001001100 Outdoor unit operation display Warm up mode 3 minutes Compressor Preliminary restart operation error protection mode Error 3 minutes Vacuum Error stop from restart afte operation No.201-No.299 or instanta- protection data just before neous po- delayed preliminary error wer failure 202 0101001100 203 1101001100 204 0011001100 205 1011001100 Outdoor operation mode Pemissable stop Standby Cooling Stop Thermo OFF Error stop Heating 206 0111001100 207 1111001100 208 0000101100 Outdoor unit control mode Regular control Initial start Defrost 52C1 52C2 Oil Low recovery frequency oil collection Warm up Refrigerant collection 209 1000101100 210 0100101100 211 1100101100 Relay output display 1 (lighting to display) Comp Comp 1 Comp 2 operation operation operation 212 0010101100 Relay output display 2 (lighting to display) 21S4a 213 1010101100 Relay output display 3 (lighting to display) SV1 214 0110101100 Relay output display 4 (lighting to display) 21S4b 21S4c CH11 Lights for normal operation CH12 SV3 SV5b SV5c 52F 215 1110101100 216 0001101100 TH11 -99.9 ~ 999.9 217 1001101100 TH12 ↑ 218 0101101100 219 1101101100 TH5 -99.9 ~ 999.9 220 0011101100 TH6 ↑ 221 1011101100 TH7 ↑ 222 0111101100 TH8 ↑ 223 1111101100 224 0000011100 225 1000011100 226 0100011100 227 1100011100 228 0010011100 - 162 - The unit is [ ˚C ]. No. SW1 LED Item 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 229 1010011100 230 0110011100 THHS1 -99.9 ~ 999.9 234 0101011100 THHS5 -99.9 ~ 999.9 231 1110011100 The unit is [ ˚C ]. 232 0001011100 233 1001011100 235 1101011100 236 0011011100 237 1011011100 238 0111011100 239 1111011100 240 0000111100 241 1000111100 242 0100111100 243 1100111100 High pressure -99.9 ~ 999.9 244 0010111100 Low pressure ↑ The unit is [ kgf/cm2 ]. 245 1010111100 246 0110111100 247 1110111100 248 0001111100 249 1001111100 Σ Qj 0000 ~ 9999 250 0101111100 Σ Qjc ↑ 251 1101111100 Σ Qjh ↑ 252 0011111100 Target condensor temp. Tc 253 1011111100 Target condensor temp. Te ↑ 254 0111111100 Tc ↑ 255 1111111100 Te ↑ -99.9 ~ 999.9 The unit is [ ˚C ]. 256 0000000010 257 1000000010 258 0100000010 All temporary frequency 0000 ~ 9999 259 1100000010 COMP1 control frequency ↑ 260 0010000010 COMP2 control frequency ↑ Control data [ Hz ]. 261 1010000010 262 0110000010 COMP1 output frequency 0000 ~ 9999 Frequency that is output from inverter [ Hz ]. 0000 ~ 9999 Control data 0000 ~ 9999 Fan inverter output [ % ]. 263 1110000010 264 0001000010 265 1001000010 AK1 266 0101000010 267 1101000010 268 0011000010 FAN1 269 1011000010 270 0111000010 - 163 - No. SW1 LED Item 1234567890 271 1111000010 Number of fans being used LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 0000 ~ 9999 272 0000100010 273 1000100010 274 0100100010 0 ~ 480 275 1100100010 LEV1 Outdoor LEV opening pulses (Fully open: 480) 276 0010100010 277 1010100010 278 0110100010 -99.9 ~ 999.9 Peak value [ A ]. -99.9 ~ 999.9 The unit is [ V ]. 288 0000010010 Compressor 1 operatin time upper 4 digits. 0000 ~ 9999 The unit is [ h ]. 289 1000010010 Compressor 1 operatin time lower 4 digits. ↑ 290 0100010010 Compressor 2 operatin time upper 4 digits. ↑ 291 1100010010 Compressor 2 operatin time lower 4 digits. ↑ 279 1110100010 COMP1 operation current (DC) 280 0001100010 281 1001100010 282 0101100010 COMP1 bus voltage 283 1101100010 284 0011100010 285 1011100010 286 0111100010 287 1111100010 292 0010010010 293 1010010010 294 0110010010 COMP 1 number of starts and stops upper 4 digits. 0000 ~ 9999 295 1110010010 COMP 1 number of starts and stops lower 4 digits. ↑ 296 0001010010 COMP 2 number of starts and stops upper 4 digits. ↑ 297 1001010010 COMP 2 number of starts and stops lower 4 digits. ↑ 298 0101010010 299 1101010010 300 0011010010 301 1011010010 302 0111010010 303 1111010010 304 0000110010 305 1000110010 306 0100110010 307 1100110010 308 0010110010 - 164 - Count up when starting up. [ Time ] No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 309 1010110010 310 0110110010 311 1110110010 312 0001110010 313 1001110010 314 0101110010 315 1101110010 316 0011110010 317 1011110010 318 0111110010 319 1111110010 320 0000001010 321 1000001010 322 0100001010 323 1100001010 324 0010001010 325 1010001010 326 0110001010 327 1110001010 328 0001001010 329 1001001010 330 0101001010 331 1101001010 332 0011001010 333 1011001010 334 0111001010 355 1111001010 336 0000101010 337 1000101010 338 0100101010 339 1100101010 340 0010101010 341 1010101010 342 0110101010 343 1110101010 344 0001101010 345 1001101010 346 0101101010 347 1101101010 348 0011101010 349 1011101010 350 0111101010 351 1111101010 IC1 Address/Capacity code 352 0000011010 IC2 Address/Capacity code 0000 ~ 9999 0000 ~ 9999 ↑ ↑ - 165 - Displayed alternately every 5 seconds. No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 353 1000011010 IC3 Address/Capacity code 0000 ~ 9999 0000 ~ 9999 354 0100011010 IC4 Address/Capacity code ↑ ↑ 355 1100011010 IC5 Address/Capacity code ↑ ↑ 356 0010011010 IC6 Address/Capacity code ↑ ↑ 357 1010011010 IC7 Address/Capacity code ↑ ↑ 358 0110011010 IC8 Address/Capacity code ↑ ↑ 359 1110011010 ↑ ↑ 360 0001011010 IC10 Address/Capacity code ↑ ↑ 361 1001011010 IC11 Address/Capacity code ↑ ↑ 362 0101011010 IC12 Address/Capacity code ↑ ↑ 363 1101011010 IC13 Address/Capacity code ↑ ↑ 364 0011011010 IC14 Address/Capacity code ↑ ↑ 365 1011011010 IC15 Address/Capacity code ↑ ↑ 366 0111011010 IC16 Address/Capacity code ↑ ↑ 367 1111011010 IC17 Address/Capacity code ↑ ↑ 368 0000111010 IC18 Address/Capacity code ↑ ↑ 369 1000111010 IC19 Address/Capacity code ↑ ↑ 370 0100111010 IC20 Address/Capacity code ↑ ↑ 371 1100111010 IC21 Address/Capacity code ↑ ↑ 372 0010111010 IC22 Address/Capacity code ↑ ↑ 373 1010111010 IC23 Address/Capacity code ↑ ↑ 374 0110111010 IC24 Address/Capacity code ↑ ↑ 375 1110111010 IC25 Address/Capacity code ↑ ↑ 376 0001111010 IC26 Address/Capacity code ↑ ↑ 377 1001111010 IC27 Address/Capacity code ↑ ↑ 378 0101111010 IC28 Address/Capacity code ↑ ↑ 379 1101111010 IC29 Address/Capacity code ↑ ↑ 380 0011111010 IC30 Address/Capacity code ↑ ↑ 381 1011111010 IC31 Address/Capacity code ↑ ↑ 382 0111111010 IC32 Address/Capacity code ↑ ↑ IC9 Address/Capacity code 383 1111111010 384 0000000110 385 1000000110 386 0100000110 387 1100000110 388 0010000110 389 1010000110 390 0110000110 391 1110000110 392 0001000110 393 1001000110 394 0101000110 395 1101000110 - 166 - LD8 Remarks Displayed alternately every 5 seconds. No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 396 0011000110 397 1011000110 398 0111000110 399 1111000110 400 0000100110 401 1000100110 402 0100100110 403 1100100110 404 0010100110 405 1010100110 406 0110100110 407 1110100110 408 0001100110 IC1 Suction temperature -99.9 ~ 999.9 409 1001100110 IC2 Suction temperature ↑ 410 0101100110 IC3 Suction temperature ↑ 411 1101100110 IC4 Suction temperature ↑ 412 0011100110 IC5 Suction temperature ↑ 413 1011100110 IC6 Suction temperature ↑ 414 0111100110 IC7 Suction temperature ↑ 415 1111100110 IC8 Suction temperature ↑ 416 0000010110 IC9 Suction temperature ↑ 417 1000010110 IC10 Suction temperature ↑ 418 0100010110 IC11 Suction temperature ↑ 419 1100010110 IC12 Suction temperature ↑ 420 0010010110 IC13 Suction temperature ↑ 421 1010010110 IC14 Suction temperature ↑ 422 0110010110 IC15 Suction temperature ↑ 423 1110010110 IC16 Suction temperature ↑ 424 0001010110 IC17 Suction temperature ↑ 425 1001010110 IC18 Suction temperature ↑ 426 0101010110 IC19 Suction temperature ↑ 427 1101010110 IC20 Suction temperature ↑ 428 0011010110 IC21 Suction temperature ↑ 429 1011010110 IC22 Suction temperature ↑ 430 0111010110 IC23 Suction temperature ↑ 431 1111010110 IC24 Suction temperature ↑ 432 0000110110 IC25 Suction temperature ↑ 433 1000110110 IC26 Suction temperature ↑ 434 0100110110 IC27 Suction temperature ↑ 435 1100110110 IC28 Suction temperature ↑ 436 0010110110 IC29 Suction temperature ↑ 437 1010110110 IC30 Suction temperature ↑ 438 0110110110 ↑ IC31 Suction temperature - 167 - The unit is [ ˚C ]. No. SW1 1234567890 439 1110110110 LED Item IC32 Suction temperature LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks -99.9 ~ 999.9 The unit is [ ˚C ]. -99.9 ~ 999.9 The unit is [ ˚C ]. 440 0001110110 441 1001110110 442 0101110110 443 1101110110 444 0011110110 445 1011110110 446 0111110110 447 1111110110 448 0000001110 449 1000001110 450 0100001110 451 1100001110 452 0010001110 453 1010001110 454 0110001110 455 1110001110 456 0001001110 457 1001001110 458 0101001110 IC1 Liquid pipe temp. 459 1101001110 IC2 Liquid pipe temp. ↑ 460 0011001110 IC3 Liquid pipe temp. ↑ 461 1011001110 IC4 Liquid pipe temp. ↑ 462 0111001110 IC5 Liquid pipe temp. ↑ 463 1111001110 IC6 Liquid pipe temp. ↑ 464 0000101110 IC7 Liquid pipe temp. ↑ 465 1000101110 IC8 Liquid pipe temp. ↑ 466 0100101110 IC9 Liquid pipe temp. ↑ IC10 Liquid pipe temp. ↑ 468 0010101110 IC11 Liquid pipe temp. ↑ 469 1010101110 IC12 Liquid pipe temp. ↑ 470 0110101110 IC13 Liquid pipe temp. ↑ 471 1110101110 IC14 Liquid pipe temp. ↑ 472 0001101110 IC15 Liquid pipe temp. ↑ 473 1001101110 IC16 Liquid pipe temp. ↑ 474 0101101110 IC17 Liquid pipe temp. ↑ 475 1101101110 IC18 Liquid pipe temp. ↑ 476 0011101110 IC19 Liquid pipe temp. ↑ 477 1011101110 IC20 Liquid pipe temp. ↑ 478 0111101110 IC21 Liquid pipe temp. ↑ 479 1111101110 IC22 Liquid pipe temp. ↑ 480 0000011110 IC23 Liquid pipe temp. ↑ 481 1000011110 IC24 Liquid pipe temp. ↑ 467 1100101110 - 168 - No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 482 0100011110 IC25 Liquid pipe temp. -99.9 ~ 999.9 483 1100011110 IC26 Liquid pipe temp. ↑ 484 0010011110 IC27 Liquid pipe temp. ↑ 485 1010011110 IC28 Liquid pipe temp. ↑ 486 0110011110 IC29 Liquid pipe temp. ↑ 487 1110011110 IC30 Liquid pipe temp. ↑ 488 0001011110 IC31 Liquid pipe temp. ↑ 489 1001011110 IC32 Liquid pipe temp. ↑ LD6 LD7 LD8 Remarks The unit is [ ˚C ]. 490 0101011110 491 1101011110 492 0011011110 493 1011011110 494 0111011110 495 1111011110 496 0000111110 497 1000111110 498 0100111110 499 1100111110 500 0010111110 501 1010111110 502 0110111110 503 1110111110 504 0001111110 505 1001111110 506 0101111110 507 1101111110 508 0011111110 509 1011111110 510 0111111110 511 1111111110 512 0000000001 Self-address Self-address and model code are alternately displayed 513 1000000001 IC/FU address Display count up for the number of connected units 514 0100000001 RC address Display count up for the number of connected units 515 1100000001 BC/TU address Display count up for the number of connected units 516 0010000001 OS address Display count up for the number of connected units 517 1010000001 Main board S/W version S/W version → Refrigerant type → Cooling only / Cooling & Heating capacity → Address Refer to LED display at initial setting 518 0110000001 519 1110000001 520 0001000001 521 1001000001 522 0101000001 523 1101000001 IC1 Gas pipe temp. -99.9 ~ 999.9 524 0011000001 IC2 Gas pipe temp. ↑ - 169 - The unit is [ ˚C ]. No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 525 1011000001 IC3 Gas pipe temp. -99.9 ~ 999.9 526 0111000001 IC4 Gas pipe temp. ↑ IC5 Gas pipe temp. ↑ 528 0000100001 IC6 Gas pipe temp. ↑ 529 1000100001 IC7 Gas pipe temp. ↑ 530 0100100001 IC8 Gas pipe temp. ↑ 531 1100100001 IC9 Gas pipe temp. ↑ 532 0010100001 IC10 Gas pipe temp. ↑ 533 1010100001 IC11 Gas pipe temp. ↑ 534 0110100001 IC12 Gas pipe temp. ↑ 535 1110100001 IC13 Gas pipe temp. ↑ 536 0001100001 IC14 Gas pipe temp. ↑ 537 1001100001 IC15 Gas pipe temp. ↑ 538 0101100001 IC16 Gas pipe temp. ↑ 539 1101100001 IC17 Gas pipe temp. ↑ 540 0011100001 IC18 Gas pipe temp. ↑ 541 1011100001 IC19 Gas pipe temp. ↑ 542 0111100001 IC20 Gas pipe temp. ↑ 543 1111100001 IC21 Gas pipe temp. ↑ 544 0000010001 IC22 Gas pipe temp. ↑ 545 1000010001 IC23 Gas pipe temp. ↑ 546 0100010001 IC24 Gas pipe temp. ↑ 547 1100010001 IC25 Gas pipe temp. ↑ 548 0010010001 IC26 Gas pipe temp. ↑ 549 1010010001 IC27 Gas pipe temp. ↑ 550 0110010001 IC28 Gas pipe temp. ↑ 551 1110010001 IC29 Gas pipe temp. ↑ 552 0001010001 IC30 Gas pipe temp. ↑ 553 1001010001 IC31 Gas pipe temp. ↑ 554 0101010001 IC32 Gas pipe temp. ↑ 527 1111000001 555 1101010001 556 0011010001 557 1011010001 558 0111010001 559 1111010001 560 0000110001 561 1000110001 562 0100110001 563 1100110001 564 0010110001 565 1010110001 566 0110110001 567 1110110001 - 170 - LD6 LD7 LD8 Remarks The unit is [ ˚C ]. No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 568 0001110001 569 1001110001 570 0101110001 571 1101110001 572 0011110001 573 1011110001 IC1SH -99.9 ~ 999.9 574 0111110001 IC2SH ↑ 575 1111110001 IC3SH ↑ 576 0000001001 IC4SH ↑ 577 1000001001 IC5SH ↑ 578 0100001001 IC6SH ↑ 579 1100001001 IC7SH ↑ 580 0010001001 IC8SH ↑ 581 1010001001 IC9SH ↑ 582 0110001001 IC10SH ↑ 583 1110001001 IC11SH ↑ 584 0001001001 IC12SH ↑ 585 1001001001 IC13SH ↑ 586 0101001001 IC14SH ↑ 587 1101001001 IC15SH ↑ 588 0011001001 IC16SH ↑ 589 1011001001 IC17SH ↑ 590 0111001001 IC18SH ↑ 591 1111001001 IC19SH ↑ 592 0000101001 IC20SH ↑ 593 1000101001 IC21SH ↑ 594 0100101001 IC22SH ↑ 595 1100101001 IC23SH ↑ 596 0010101001 IC24SH ↑ 597 1010101001 IC25SH ↑ 598 0110101001 IC26SH ↑ 599 1110101001 IC27SH ↑ 600 0001101001 IC28SH ↑ 601 1001101001 IC29SH ↑ 602 0101101001 IC30SH ↑ 603 1101101001 IC31SH ↑ 604 0011101001 IC32SH ↑ 605 1011101001 606 0111101001 607 1111101001 608 0000011001 609 1000011001 610 0100011001 - 171 - The unit is [ deg ]. No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 611 1100011001 612 0010011001 613 1010011001 614 0110011001 615 1110011001 616 0001011001 617 1001011001 618 0101011001 619 1101011001 620 0011011001 621 1011011001 622 0111011001 623 1111011001 IC1SC -99.9 ~ 999.9 624 0000111001 IC2SC ↑ 625 1000111001 IC3SC ↑ 626 0100111001 IC4SC ↑ 627 1100111001 IC5SC ↑ 628 0010111001 IC6SC ↑ 629 1010111001 IC7SC ↑ 630 0110111001 IC8SC ↑ 631 1110111001 IC9SC ↑ 632 0001111001 IC10SC ↑ 633 1001111001 IC11SC ↑ 634 0101111001 IC12SC ↑ 635 1101111001 IC13SC ↑ 636 0011111001 IC14SC ↑ 637 1011111001 IC15SC ↑ 638 0111111001 IC16SC ↑ 639 1111111001 IC17SC ↑ 640 0000000101 IC18SC ↑ 641 1000000101 IC19SC ↑ 642 0100000101 IC20SC ↑ 643 1100000101 IC21SC ↑ 644 0010000101 IC22SC ↑ 645 1010000101 IC23SC ↑ 646 0110000101 IC24SC ↑ 647 1110000101 IC25SC ↑ 648 0001000101 IC26SC ↑ 649 1001000101 IC27SC ↑ 650 0101000101 IC28SC ↑ 651 1101000101 IC29SC ↑ 652 0011000101 IC30SC ↑ 653 1011000101 IC31SC ↑ - 172 - The unit is [ deg ]. No. SW1 1234567890 LED Item 654 0111000101 IC32SC LD1 LD2 LD3 LD4 LD5 -99.9 ~ 999.9 LD6 LD7 LD8 Remarks The unit is [ deg ]. 655 1111000101 656 0000100101 657 1000100101 658 0100100101 659 1100100101 660 0010100101 661 1010100101 662 0110100101 663 1110100101 664 0001100101 665 1001100101 666 0101100101 667 1101100101 668 0011100101 669 1011100101 670 0111100101 671 1111100101 672 0000010101 673 1000010101 674 0100010101 675 1100010101 676 0010010101 INV board S/W version 0.00 ~ 99.99 677 1010010101 678 0110010101 679 1110010101 FAN board S/W version 0.00 ~ 99.99 680 0001010101 681 1001010101 682 0101010101 683 1101010101 684 0011010101 685 1011010101 686 0111010101 687 1111010101 688 0000110101 Current time 689 1000110101 Current time-2 690 0100110101 Error detection time1 691 1100110101 Error detection time1-2 692 0010110101 Error detection time2 693 1010110101 Error detection time2-2 694 0110110101 Error detection time3 695 1110110101 Error detection time3-2 00:00 ~ 23:59 00.00 ~ 99.12 / 1 ~ 31 00:00 ~ 23:59 00.00 ~ 99.12 / 1 ~ 31 00:00 ~ 23:59 00.00 ~ 99.12 / 1 ~ 31 00:00 ~ 23:59 00.00 ~ 99.12 / 1 ~ 31 - 173 - Hour : minute Display alternately year/month and day Hour : minute Display alternately year/month and day Hour : minute Display alternately year/month and day Hour : minute Display alternately year/month and day No. SW1 1234567890 LED Item 696 0001110101 Error detection time4 697 1001110101 Error detection time4-2 698 0101110101 Error detection time5 699 1101110101 Error detection time5-2 700 0011110101 Error detection time6 701 1011110101 Error detection time6-2 702 0111110101 Error detection time7 703 1111110101 Error detection time7-2 704 0000001101 Error detection time8 705 1000001101 Error detection time8-2 706 0100001101 Error detection time9 LD1 LD2 LD3 LD4 LD5 00:00 ~ 23:59 00.00 ~ 99.12 / 1 ~ 31 00:00 ~ 23:59 00.00 ~ 99.12 / 1 ~ 31 00:00 ~ 23:59 00.00 ~ 99.12 / 1 ~ 31 00:00 ~ 23:59 00.00 ~ 99.12 / 1 ~ 31 00:00 ~ 23:59 00.00 ~ 99.12 / 1 ~ 31 00:00 ~ 23:59 707 1100001101 Error detection time9-2 00.00 ~ 99.12 / 1 ~ 31 708 0010001101 Error detection time10 00:00 ~ 23:59 709 1010001101 Error detection time10-2 00.00 ~ 99.12 / 1 ~ 31 710 0110001101 Time when data before error is saved 00:00 ~ 23:59 711 1110001101 Time when data before error is saved-2 00.00 ~ 99.12 / 1 ~ 31 LD6 LD7 LD8 Remarks Hour : minute Display alternately year/month and day Hour : minute Display alternately year/month and day Hour : minute Display alternately year/month and day Hour : minute Display alternately year/month and day Hour : minute Display alternately year/month and day Hour : minute Display alternately year/month and day Hour : minute Display alternately year/month and day Hour : minute Display alternately year/month and day 712 0001001101 713 1001001101 714 0101001101 IC1 LEV opening pulses 0000 ~ 2000 715 1101001101 IC2 LEV opening pulses ↑ 716 0011001101 IC3 LEV opening pulses ↑ 717 1011001101 IC4 LEV opening pulses ↑ 718 0111001101 IC5 LEV opening pulses ↑ 719 1111001101 IC6 LEV opening pulses ↑ 720 0000101101 IC7 LEV opening pulses ↑ 721 1000101101 IC8 LEV opening pulses ↑ 722 0100101101 IC9 LEV opening pulses ↑ 723 1100101101 IC10 LEV opening pulses ↑ 724 0010101101 IC11 LEV opening pulses ↑ 725 1010101101 IC12 LEV opening pulses ↑ 726 0110101101 IC13 LEV opening pulses ↑ 727 1110101101 IC14 LEV opening pulses ↑ 728 0001101101 IC15 LEV opening pulses ↑ 729 1001101101 IC16 LEV opening pulses ↑ 730 0101101101 IC17 LEV opening pulses ↑ 731 1101101101 IC18 LEV opening pulses ↑ 732 0011101101 IC19 LEV opening pulses ↑ 733 1011101101 IC20 LEV opening pulses ↑ 734 0111101101 IC21 LEV opening pulses ↑ 735 1111101101 IC22 LEV opening pulses ↑ 736 0000011101 IC23 LEV opening pulses ↑ 737 1000011101 IC24 LEV opening pulses ↑ - 174 - Fully open : 2000 No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 738 0100011101 IC25 LEV opening pulses 0000 ~ 2000 739 1100011101 IC26 LEV opening pulses ↑ 740 0010011101 IC27 LEV opening pulses ↑ 741 1010011101 IC28 LEV opening pulses ↑ 742 0110011101 IC29 LEV opening pulses ↑ 743 1110011101 IC30 LEV opening pulses ↑ 744 0001011101 IC31 LEV opening pulses ↑ 745 1001011101 IC32 LEV opening pulses ↑ 746 0101011101 747 1101011101 748 0011011101 749 1011011101 750 0111011101 751 1111011101 752 0000111101 753 1000111101 754 0100111101 755 1100111101 756 0010111101 757 1010111101 758 0110111101 759 1110111101 760 0001111101 761 1001111101 762 0101111101 763 1101111101 764 0011111101 IC1 Operation mode 765 1011111101 IC2 Operation mode 766 0111111101 IC3 Operation mode 767 1111111101 IC4 Operation mode 768 0000000011 IC5 Operation mode 769 1000000011 IC6 Operation mode 770 0100000011 IC7 Operation mode 0000 : Off 771 1100000011 IC8 Operation mode 0001 : Fan 772 0010000011 IC9 Operation mode 0002 : Cooling 773 1010000011 IC10 Operation mode 0003 : Heating 774 0110000011 IC11 Operation mode 0004 : Dry 775 1110000011 IC12 Operation mode 776 0001000011 IC13 Operation mode 777 1001000011 IC14 Operation mode 778 0101000011 IC15 Operation mode 779 1101000011 IC16 Operation mode 780 0011000011 IC17 Operation mode - 175 - LD6 LD7 LD8 Remarks Fully open : 2000 No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 781 1011000011 IC18 Operation mode 782 0111000011 IC19 Operation mode 783 1111000011 IC20 Operation mode 784 0000100011 IC21 Operation mode 785 1000100011 IC22 Operation mode 786 0100100011 IC23 Operation mode 0000 : Off 787 1100100011 IC24 Operation mode 0001 : Fan 788 0010100011 IC25 Operation mode 0002 : Cooling 789 1010100011 IC26 Operation mode 0003 : Heating 790 0110100011 IC27 Operation mode 0004 : Dry 791 1110100011 IC28 Operation mode 792 0001100011 IC29 Operation mode 793 1001100011 IC30 Operation mode 794 0101100011 IC31 Operation mode 795 1101100011 IC32 Operation mode 796 0011100011 797 1011100011 798 0111100011 799 1111100011 800 0000010011 801 1000010011 802 0100010011 803 1100010011 804 0010010011 805 1010010011 806 0110010011 807 1110010011 808 0001010011 809 1001010011 810 0101010011 811 1101010011 812 0011010011 813 1011010011 814 0111010011 IC1 Filter 0000 ~ 9999 815 1111001001 IC2 Filter ↑ 816 0000101011 IC3 Filter ↑ 817 1000101011 IC4 Filter ↑ 818 0100101011 IC5 Filter ↑ 819 1100101011 IC6 Filter ↑ 820 0010101011 IC7 Filter ↑ 821 1010101011 IC8 Filter ↑ 822 0110101011 IC9 Filter ↑ 823 1110101011 IC10 Filter ↑ - 176 - Hours since previous maintenance [ h ] No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 824 0001101011 IC11 Filter 0000 ~ 9999 825 1001101011 IC12 Filter ↑ 826 0101101011 IC13 Filter ↑ 827 1101101011 IC14 Filter ↑ 828 0011101011 IC15 Filter ↑ 829 1011101011 IC16 Filter ↑ 830 0111101011 IC17 Filter ↑ 831 1111101011 IC18 Filter ↑ 832 0000011011 IC19 Filter ↑ 833 1000011011 IC20 Filter ↑ 834 0100011011 IC21 Filter ↑ 835 1100011011 IC22 Filter ↑ 836 0010011011 IC23 Filter ↑ 837 1010011011 IC24 Filter ↑ 838 0110011011 IC25 Filter ↑ 839 1110011011 IC26 Filter ↑ 840 0001011011 IC27 Filter ↑ 841 1001011011 IC28 Filter ↑ 842 0101011011 IC29 Filter ↑ 843 1101011011 IC30 Filter ↑ 844 0011011011 IC31 Filter ↑ 845 1011011011 IC32 Filter ↑ 846 0111001001 847 1111001011 848 0000101011 849 1000101011 850 0100101011 851 1100101011 852 0010101011 853 1010101011 854 0110101011 855 1110101011 856 0001101011 857 1001101011 858 0101101011 859 1101101011 860 0011101011 861 1011101011 862 0111101011 863 1111101011 864 0000011011 865 1000011011 866 0100011011 - 177 - LD6 LD7 LD8 Remarks Hours since previous maintenance [ h ] No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 867 1100011011 868 0010011011 869 1010011011 870 0110011011 871 1110011011 U phase current effective value 1 -99.9 ~ 999.9 872 0001011011 W phase current effective value 1 ↑ 873 1001011011 Power tactor phase angle 1 (deg) ↑ The unit is [ deg ]. 0 ~ 254 The unit is [ Time ]. The unit is [ A ]. 874 0101011011 875 1101011011 876 0011011011 877 1011011011 878 0111011011 879 1111011011 880 0000111011 Main circuit board reset counter ↑ 881 1000111011 INV board reset counter 882 0100111011 883 1100111011 884 0010111011 FAN board reset counter 0 ~ 254 885 1010111011 886 0110111011 887 1110111011 888 0001111011 889 1001111011 890 0101111011 891 1101111011 892 0011111011 893 1011111011 894 0111111011 895 1111111011 896 0000000111 897 1000000111 898 0100000111 899 1100000111 900 0010000111 901 1010000111 902 0110000111 903 1110000111 904 0001000111 905 1001000111 906 0101000111 - 178 - No. SW1 1234567890 LED Item LD1 LD2 LD3 LD4 907 1101000111 1020 0011111111 1021 1011111111 1022 0111111111 1023 1111111111 - 179 - LD5 LD6 LD7 LD8 Remarks Service Handbook PUHY-P200, P250, P300, P350, P400YGM-A PUHY-P450, P500, P550, P600, P650YGM-A PUY-P200, P250, P300, P350YGM-A HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Issued in Sep. 2004 HWE04010 Printed in Japan New publication effective Sep. 2004. Specifications subject to change without notice.
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