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Contents 1 Read Before Servicing ................................................................ [1] Items to Be Checked .............................................................. [2] Necessary Tools and Materials .............................................. [3] Piping Materials ...................................................................... [4] Storage of Piping .................................................................... [5] Piping Processing .................................................................. [6] Brazing.................................................................................... [7] Air Tightness Test .................................................................... [8] Vacuum Drying (Evacuation) .................................................. [9] Refrigerant Charging .............................................................. [10] Remedies to be taken in case of a Refrigerant Leak ............ [11] Characteristics of the Conventional and the New Refrigerants .. [12] Notes on Refrigerating Machine Oil........................................ 7 7 8 9 11 11 12 13 14 15 15 16 17 2 Restrictions .................................................................................. [1] Types and Maximum allowable Length of Cables .................. [2] Types of Switch Setting and Address Setting ........................ [3] Examples of system connection ............................................ [4] Restrictions on piping length .................................................. 18 18 19 20 21 3 Components of the Unit .............................................................. [1] Appearance of the Components and Refrigerant Circuit........ [2] Control Box ............................................................................ [3] Circuit Board .......................................................................... 22 22 24 26 4 Remote Controller ........................................................................ 29 [1] Functions and Specifications of MA Remote Controller.................. 29 [2] Interlocking Setting via the MA Remote Controller ........................ 30 5 Electrical Wiring Diagram ............................................................ [1] PWFY-P100VM-E-BU ............................................................ [2] PWFY-P100, 200VM-E-AU, PWFY-P100, 200VM-E1-AU ...... [3] PWFY-P100, 200VM-E2-AU .................................................. 32 32 33 34 6 Refrigerant Circuit ........................................................................ [1] Refrigerant Circuit Diagram .................................................... [2] Pump interlock ........................................................................ [3] Functions of Principal Parts.................................................... 35 35 36 37 7 Control.......................................................................................... 39 [1] Dip Switch Functions and Their Factory Settings .................. 39 8 Test Run ...................................................................................... [1] Check Items before Test Run.................................................. [2] Test Run Method .................................................................... [3] Refrigerant .............................................................................. [4] Symptoms that do not Signify Problems ................................ [5] Standard operation data ........................................................ 42 42 42 42 43 43 9 Troubleshooting ............................................................................ [1] Check Code List .................................................................... [2] Responding to Error Display on the Remote Controller ........ [3] Troubleshooting Principal Parts .............................................. [4] Maintenance .......................................................................... 44 44 45 61 75 0 LED display .................................................................................. 80 [1] LED Monitor Display .............................................................. 80 Safety Precautions Before installing the unit, thoroughly read the following safety precautions. Observe these safety precautions for your safety. WARNING This symbol is intended to alert the user to the presence of important instructions that must be followed to avoid the risk of serious injury or death. CAUTION This symbol is intended to alert the user to the presence of important instructions that must be followed to avoid the risk of serious injury or damage to the unit. After reading this manual, give it to the user to retain for future reference. Keep this manual for easy reference. When the unit is moved or repaired, give this manual to those who provide these services. When the user changes, make sure that the new user receives this manual. WARNING Do not use refrigerant other than the type indicated in the manuals provided with the unit and on the nameplate. Do not make any modifications or alterations to the unit. Consult your dealer for repair. Doing so may cause the unit or pipes to burst, or result in explosion or fire during use, during repair, or at the time of disposal of the unit. It may also be in violation of applicable laws. MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for malfunctions or accidents resulting from the use of the wrong type of refrigerant. Improper repair may result in water leakage, electric shock, smoke, and/or fire. Do not touch the refrigerant pipes and Water pipes. Improper handling may result in injury. In the event of a refrigerant leak, thoroughly ventilate the room. Do not use steel pipes as water pipes. Copper pipes are recommended. If refrigerant gas leaks and comes in contact with an open flame, poisonous gases will be produced. The water circuit should be a closed circuit. Properly install the unit according to the instructions in the installation manual. Ask your dealer or a qualified technician to install the unit. Improper installation may result in water leakage, electric shock, smoke, and/or fire. Improper installation by the user may result in water leakage, electric shock, smoke, and/or fire. Have all electrical work performed by an authorized electrician according to the local regulations and instructions in this manual, and a dedicated circuit must be used. Properly install the unit on a surface that can withstand the weight of the unit. Unit installed on an unstable surface may fall and cause injury. Insufficient capacity of the power supply circuit or improper installation may result in malfunctions of the unit, electric shock, smoke, and/or fire. Only use specified cables. Securely connect each cable so that the terminals do not carry the weight of the cable. Improperly connected or fixed cables may produce heat and start a fire. Take appropriate safety measures against strong winds and earthquakes to prevent the unit from falling. If the unit is not installed properly, the unit may fall and cause serious injury to the person or damage to the unit. -1- WARNING Securely attach the terminal block cover (panel) to the unit. After completing the service work, check for a gas leak. If the terminal block cover (panel) is not installed properly, dust and/or water may infiltrate and pose a risk of electric shock, smoke, and/or fire. If leaked refrigerant is exposed to a heat source, such as a fan heater, stove, or electric grill, poisonous gases may be produced. Only use the type of refrigerant that is indicated on the unit when installing or reinstalling the unit. Do not try to defeat the safety features of the unit. Infiltration of any other type of refrigerant or air into the unit may adversely affect the refrigerant cycle and may cause the pipes to burst or explode. Forced operation of the pressure switch or the temperature switch by defeating the safety features of these devices, or the use of accessories other than the ones that are recommended by MITSUBISHI may result in smoke, fire, and/or explosion. When installing the unit in a small room, exercise caution and take measures against leaked refrigerant reaching the limiting concentration. Only use accessories recommended by MITSUBISHI. Ask a qualified technician to install the unit. Improper installation by the user may result in water leakage, electric shock, smoke, and/or fire. Consult your dealer with any questions regarding limiting concentrations and for precautionary measures before installing the unit. Leaked refrigerant gas exceeding the limiting concentration causes oxygen deficiency. Control box houses high-voltage parts. When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components. Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the voltage between FT-P and FT-N on INV Board has dropped to DC20V or less. (It takes about 10 minutes to discharge electricity after the power supply is turned off.) Consult your dealer or a specialist when moving or reinstalling the unit. Improper installation may result in water leakage, electric shock, and/or fire. -2- 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. A large amount of chlorine that may be contained in the residual refrigerant and refrigerating machine oil in the existing piping may cause the refrigerating machine oil in the new unit to deteriorate. R410A is a high-pressure refrigerant and can cause the existing pipes to burst. If a vacuum pump that is not equipped with a reverse-flow check valve is used, the vacuum pump oil may flow into the refrigerant cycle and cause the refrigerating machine oil to deteriorate. Prepare tools for exclusive use with R410A. Do not use the following tools if they have been used with the conventional refrigerant (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 phosphorus deoxidized copper. Keep the inner and outer surfaces of the pipes clean and free of such contaminants as sulfur, oxides, dust, dirt, shaving particles, oil, and water. If the refrigerant or the refrigerating machine oil left on these tools are mixed in with R410A, it may cause the refrigerating machine oil to deteriorate. Infiltration of water may cause the refrigerating machine oil to deteriorate. Gas leak detectors for conventional refrigerants will not detect an R410A leak because R410A is free of chlorine. These types of contaminants inside the refrigerant pipes may cause the refrigerant oil to deteriorate. Store the pipes to be installed indoors, and keep both ends of the pipes sealed until immediately before brazing. (Keep elbows and other joints wrapped in plastic.) Infiltration of dust, dirt, or water into the refrigerant system may cause the refrigerating machine oil to deteriorate or cause the unit to malfunction. Do not use a charging cylinder. If a charging cylinder is used, the composition of the refrigerant will change, and the unit may experience power loss. Use a small amount of ester oil, ether oil, or alkylbenzene to coat flares and flanges. Exercise special care when handling the tools for use with R410A. Infiltration of a large amount of mineral oil may cause the refrigerating machine oil to deteriorate. Infiltration of dust, dirt, or water into the refrigerant system may cause the refrigerating machine oil to deteriorate. Charge liquid refrigerant (as opposed to gaseous refrigerant) into the system. Only use refrigerant R410A. If gaseous refrigerant is charged into the system, the composition of the refrigerant in the cylinder will change and may result in performance loss. The use of other types of refrigerant that contain chlorine (i.e. R22) may cause the refrigerating machine oil to deteriorate. -3- Before installing the unit WARNING Do not install the unit where a gas leak may occur. When installing the unit in a hospital, take appropriate measures to reduce noise interference. If gaseous refrigerant leaks and piles up around the unit, it may be ignited. High-frequency medical equipment may interfere with the normal operation of the air conditioner or vice versa. Do not use the unit to keep food items, animals, plants, artifacts, or for other special purposes. Do not install the unit on or over things that cannot get wet. The unit is not designed to preserve food products. When the humidity level exceeds 80% or if the drainage system is clogged, the indoor unit may drip water. Drain water is also discharged from the outdoor unit. Install a centralized drainage system if necessary. Do not use the unit in an unusual environment. Do not install the unit where a large amount of oil or steam is present or where acidic or alkaline solutions or chemical sprays are used frequently. Doing so may lead to a remarkable drop in performance, electric shock, malfunctions, smoke, and/or fire. The presence of organic solvents or corrosive gas (i.e. ammonia, sulfur compounds, and acid) may cause gas leakage or water leakage. -4- Before installing the unit (moving and reinstalling the unit) and performing electrical work CAUTION Properly ground the unit. Periodically check the installation base for damage. Do not connect the grounding wire to a gas pipe, water pipe, lightning rod, or grounding wire from a telephone pole. Improper grounding may result in electric shock, smoke, fire, and/or malfunction due to noise interference. If the unit is left on a damaged platform, it may fall and cause injury. Properly install the drain pipes according to the instructions in the installation manual. Keep them insulated to avoid dew condensation. Do not put tension on the power supply wires. Improper plumbing work may result in water leakage and damage to the furnishings. If tension is put on the wires, they may break and result in excessive heat, smoke, and/or fire. Exercise caution when transporting products. Install an earth leakage breaker to avoid the risk of electric shock. Products weighing more than 20 kg should not be carried alone. Do not carry the product by the PP bands that are used on some products. Failure to install an earth leakage breaker may result in electric shock, smoke, and/or fire. Use the kind of power supply wires that are specified in the installation manual. Properly dispose of the packing materials. The use of wrong kind of power supply wires may result in current leak, electric shock, and/or fire. Nails and wood pieces in the package may pose a risk of injury. Plastic bags may pose a risk of choking hazard to children. Tear plastic bags into pieces before disposing of them. Use breakers and fuses (current breaker, remote switch <switch + Type-B fuse>, moulded case circuit breaker) with the proper current capacity. The use of wrong capacity fuses, steel wires, or copper wires may result in malfunctions, smoke, and/or fire. Do not spray water on the unit or immerse the air conditioner in water. Otherwise, electric shock and/or fire may result. When handling units, always wear protective gloves to protect your hands from metal parts and high-temperature parts. -5- Before the test run CAUTION Turn on the unit at least 12 hours before the test run. Do not operate the unit without panels and safety guards. Keep the unit turned on throughout the season. If the unit is turned off in the middle of a season, it may result in malfunctions. Rotating, high-temperature, or high-voltage parts on the unit pose a risk of burns and/or electric shock. To avoid the risk of electric shock or malfunction of the unit, do not operate switches with wet hands. Do not turn off the power immediately after stopping the operation. Keep the unit on for at least five minutes before turning off the power to prevent water leakage or malfunction. Do not touch the refrigerant pipes with bare hands during and immediately after operation. Do not operate the unit without the air filter. During or immediately after operation, certain parts of the unit such as pipes and compressor may be either very cold or hot, depending on the state of the refrigerant in the unit at the time. To reduce the risk of frost bites and burns, do not touch these parts with bare hands. Dust particles may build up in the system and cause malfunctions. -6- ¡ Read Before Servicing [1] Items to Be Checked 1. Check the type of refrigerant used in the system to be serviced. Refrigerant Type PWFY-P100, 200VM-E-AU PWFY-P100VM-E-BU PWFY-P100, 200VM-E1-AU PWFY-P100, 200VM-E2-AU Between unit and BC controller R410A R410A R134a Inside the unit 2. Check the symptoms exhibited by the unit to be serviced. Refer to this service handbook for symptoms relating to the refrigerant cycle. 3. Thoroughly read the safety precautions at the beginning of this manual. 4. Preparing necessary tools: Prepare a set of tools to be used exclusively with each type of refrigerant. Refer to "Necessary Tools and Materials" for information on the use of tools.(page 8) 5. Verification of the connecting pipes: Verify the type of refrigerant used for the unit to be moved or replaced. Use refrigerant pipes made of phosphorus deoxidized copper. Keep the inner and outer surfaces of the pipes clean and free of such contaminants as sulfur, oxides, dust, dirt, shaving particles, oil, and water. These types of contaminants inside the refrigerant pipes may cause the refrigerant oil to deteriorate. 6. If there is a leak of gaseous refrigerant and the remaining refrigerant is exposed to an open flame, a poisonous gas hydrofluoric acid may form. Keep workplace well ventilated. CAUTION Install new pipes immediately after removing old ones to keep moisture out of the refrigerant circuit. The use of refrigerant that contains chloride, such as R22, will cause the refrigerating machine oil to deteriorate. -7- [2] Necessary Tools and Materials Prepare the following tools and materials necessary for installing and servicing the unit. Tools for use with R410A (Adaptability of tools that are for use with R22 or R407C) 1. To be used exclusively with R410A (not to be used if used with R22 or R407C) Tools/Materials Use Notes Gauge Manifold Evacuation and refrigerant charging Higher than 5.09MPa[738psi] on the high-pressure side Charging Hose Evacuation and refrigerant charging The hose diameter is larger than the conventional model. Refrigerant Recovery Cylinder Refrigerant recovery Refrigerant Cylinder Refrigerant charging The refrigerant type is indicated. The cylinder is pink. Charging Port on the Refrigerant Cylinder Refrigerant charging The charge port diameter is larger than that of the current port. Flare Nut Use Type-2 Flare nuts. Connection of the unit with the pipes 2. Tools and materials that may be used with R410A with some restrictions Tools/Materials Use Notes Gas Leak Detector Gas leak detection The ones for use with HFC refrigerant may be used. Vacuum Pump Vacuum drying May be used if a check valve adapter is attached. Flare Tool Flare processing Flare processing dimensions for the piping in the system using the new refrigerant differ from those of R22. Refer to next page. Refrigerant Recovery Equipment Refrigerant recovery May be used if compatible with R410A or R134a 3. Tools and materials that are used with R22 or R407C that may also be used with R410A Tools/Materials Use Vacuum Pump with a Check Valve Vacuum drying Bender Bending pipes Torque Wrench Tightening flare nuts Pipe Cutter Cutting pipes Welder and Nitrogen Cylinder Welding pipes Refrigerant Charging Meter Refrigerant charging Vacuum Gauge Vacuum level check Notes Only the flare processing dimensions for pipes that have a diameter of ø12.70 (1/2") and ø15.88 (5/8") have been changed. 4. Tools and materials that must not be used with R410A Tools/Materials Charging Cylinder Use Refrigerant charging Notes Prohibited to use Tools for R410A must be handled with special care to keep moisture and dust from infiltrating the cycle. -8- [3] Piping Materials Do not use the existing piping! 1. Copper pipe materials O-material (Annealed) Soft copper pipes (annealed copper pipes). They can easily be bent with hands. 1/2H-material (Drawn) Hard copper pipes (straight pipes). They are stronger than the O-material (Annealed) at the same radial thickness. The distinction between O-materials (Annealed) and 1/2H-materials (Drawn) is made based on the strength of the pipes themselves. O-materials (Annealed) can easily be bent with hands. 1/2H-materials (Drawn) are considerably stronger than O-material (Annealed) at the same thickness. 2. Types of copper pipes Maximum working pressure Refrigerant type 4.30 MPa [624psi] R410A and R134a 3. Piping materials/Radial thickness Use refrigerant pipes made of phosphorus deoxidized copper. The operation pressure of the units that use R410A is higher than that of the units that use R22. Use pipes that have 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.) Pipe size (mm[in]) Radial thickness (mm) ø6.35 [1/4"] 0.8t ø9.52 [3/8"] 0.8t ø12.7 [1/2"] 0.8t ø15.88 [5/8"] 1.0t ø19.05 [3/4"] 1.0t ø22.2 [7/8"] 1.0t ø25.4 [1"] 1.0t ø28.58 [1-1/8"] 1.0t ø31.75 [1-1/4"] 1.1t ø34.93 [1-3/8"] 1.1t ø41.28 [1-5/8"] 1.2t Type O-material (Annealed) 1/2H-material, H-material (Drawn) The pipes in the system that uses the refrigerant currently on the market are made with O-material (Annealed), even if the pipe diameter is less than ø19.05 (3/4"). For a system that uses R410A, use pipes that are made with 1/2H-material (Drawn) unless the pipe diameter is at least ø19.05 (3/4") and the radial thickness is at least 1.2t. The figures in the radial thickness column are based on the Japanese standards and provided only as a reference. Use pipes that meet the local standards. -9- 4. Thickness and refrigerant type indicated on the piping materials Ask the pipe manufacturer for the symbols indicated on the piping material for new refrigerant. 5. Flare processing (O-material (Annealed) and OL-material only) The flare processing dimensions for the pipes that are used in the R410A system are larger than those in the R22 system. Flare processing dimensions (mm[in]) A dimension (mm) ø6.35 [1/4"] 9.1 ø9.52 [3/8"] 13.2 ø12.7 [1/2"] 16.6 ø15.88 [5/8"] 19.7 ø19.05 [3/4"] 24.0 Dimension A Pipe size (mm[in]) If a clutch-type flare tool is used to flare the pipes in the system using R410A, the length of the pipes must be between 1.0 and 1.5 mm. For margin adjustment, a copper pipe gauge is necessary. 6. Flare nut The flare nut type has been changed to increase the strength. The size of some of the flare nuts have also been changed. Flare nut dimensions (mm[in]) Pipe size (mm[in]) B dimension (mm) ø6.35 [1/4"] 17.0 ø9.52 [3/8"] 22.0 ø12.7 [1/2" ] 26.0 ø15.88 [5/8" ] 29.0 ø19.05 [3/4"] 36.0 Dimension B The figures in the radial thickness column are based on the Japanese standards and provided only as a reference. Use pipes that meet the local standards. - 10 - [4] Storage of Piping 1. Storage location Store the pipes to be used indoors. (Warehouse at site or owner's warehouse) If they are left outdoors, dust, dirt, or moisture may infiltrate and contaminate the pipe. 2. Sealing the pipe ends Both ends of the pipes should be sealed until just before brazing. Keep elbow pipes and T-joints in plastic bags. The new refrigerator oil is 10 times as hygroscopic as the conventional refrigerating machine oil (such as Suniso) and, if not handled with care, could easily introduce moisture into the system. Keep moisture out of the pipes, for it will cause the oil to deteriorate and cause a compressor failure. [5] Pipe Processing Use a small amount of ester oil, ether oil, or alkylbenzene to coat flares and flanges. Use a minimum amount of oil. Use only ester oil, ether oil, and alkylbenzene. - 11 - [6] Brazing No changes have been made in the brazing procedures. Perform brazing with special care to keep foreign objects (such as oxide scale, water, and dust) out of the refrigerant system. Example: Inside the brazed connection Use of oxidized solder for brazing Use of non-oxidized solder for brazing 1. Items to be strictly observed Do not conduct refrigerant piping work outdoors if raining. Use non-oxidized solder. Use a brazing material (BCuP-3) that requires no flux when brazing between copper pipes or between a copper pipe and copper coupling. If installed refrigerant pipes are not immediately connected to the equipment, then braze and seal both ends. 2. Reasons The new refrigerating machine oil is 10 times as hygroscopic as the conventional oil and is more likely to cause unit failure if water infiltrates into the system. Flux generally contains chloride. Residual flux in the refrigerant circuit will cause sludge to form. 3. Notes Do not use commercially available antioxidants because they may cause the pipes to corrode or refrigerating machine oil to deteriorate. - 12 - [7] Air T ightness T est No changes have been made in the detection method. Note that a refrigerant leak detector for R22 will not detect an R410A leak. Halide torch R22 leakage detector 1. Items to be strictly observed Pressurize the equipment with nitrogen up to the design pressure (4.15MPa[601psi]), and then judge the equipment's air tightness, taking temperature variations into account. When using refrigerant instead of a leak detector to find the location of a leak, use R410A. Refrigerant R410A must be charged in its liquid state (vs. gaseous state). 2. Reasons Oxygen, if used for an air tightness test, poses a risk of explosion. (Only use nitrogen to check air tightness.) Refrigerant R410A must be charged in its liquid state. If gaseous refrigerant in the cylinder is drawn out first, the composition of the remaining refrigerant in the cylinder will change and become unsuitable for use. 3. Notes Procure a leak detector that is specifically designed to detect an HFC leak. A leak detector for R22 will not detect an HFC(R410A, R407C) leak. - 13 - [8] Vacuum Drying (Evacuation) (Photo1) 15010H (Photo2) 14010 Recommended vacuum gauge: ROBINAIR 14010 Thermistor Vacuum Gauge 1. Vacuum pump with a reverse-flow check valve (Photo1) To prevent the vacuum pump oil from flowing into the refrigerant circuit during power OFF or power failure, use a vacuum pump with a reverse-flow check valve. A reverse-flow check valve may also be added to the vacuum pump currently in use. 2. Standard of vacuum degree (Photo 2) Use a vacuum pump that attains 0.5Torr(6 5Pa) or lower degree of vacuum after 5 minutes of operation, and connect it directly to the vacuum gauge. Use a pump well-maintained with an appropriate lubricant. A poorly maintained vacuum pump may not be able to attain the desired degree of vacuum. 3. Required precision of vacuum gauge Use a vacuum gauge that registers a vacuum degree of 5Torr(650Pa) and measures at intervals of 1Torr(130Pa). (A recommended vacuum gauge is shown in Photo2.) Do not use a commonly used gauge manifold because it cannot register a vacuum degree of 5Torr(650Pa). 4. Evacuation time After the degree of vacuum has reached 5Torr(650Pa), evacuate for an additional 1 hour. (A thorough vacuum drying removes moisture in the pipes.) Verify that the vacuum degree has not risen by more than 1Torr(130Pa) 1hour after evacuation. A rise by less than 1Torr(130Pa) is acceptable. If the vacuum is lost by more than 1Torr(130Pa), conduct evacuation, following the instructions in section 6. Special vacuum drying. 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 5Torr(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. If water infiltrates the system, break the vacuum with nitrogen. Pressurize the system with nitrogen gas to 0.5kgf/cm2G(0.05MPa) and evacuate again. Repeat this cycle of pressurizing and evacuation either until the degree of vacuum below 5Torr(650Pa) is attained or until the pressure stops rising. Only use nitrogen gas for vacuum breaking. (The use of oxygen may result in an explosion.) - 14 - [9] Refrigerant Charging Cylinder without a siphon Cylinder with a siphon Cylinder Cylinder Cylinder color R410A is pink. Refrigerant charging in the liquid state Valve Valve liquid liquid 1. Reasons R410A is a pseudo-azeotropic HFC blend (boiling point R32=-52 C[-62 F], R125=-49 C [-52 F]) and can almost be handled the same way as a single refrigerant, such as R22. To be safe, however, draw out the refrigerant from the cylinder in the liquid phase. If the refrigerant in the gaseous phase is drawn out, the composition of the remaining refrigerant will change and become unsuitable for use. 2. Notes When using a cylinder with a siphon, refrigerant is charged in the liquid state without the need for turning it upside down. Check the type of the cylinder on the label before use. [10] Remedies to be taken in case of a Refrigerant Leak If the refrigerant leaks out, it may be replenished. The entire refrigerant does not need to be replaced. (Charge refrigerant in the liquid state.) - 15 - [11] Characteristics of the Conventional and the New Refrigerants 1. Chemical property As with R22, refrigerants R410A and R134a are low in toxicity and chemically stable nonflammable refrigerants. However, because the specific gravity of vapor refrigerant is greater than that of air, leaked refrigerant in a closed room will accumulate at the bottom of the room and may cause hypoxia. If exposed to an open flame, refrigerant will generate poisonous gases. Do not perform installation or service work in a confined area. New Refrigerant (HFC type) R410A R134a R32/R125 R134a Composition (wt%) (50/50) (100) Type of Refrigerant Pseudo-azeotropic Refrigerant SingleRefrigerant Not included Not contained A1/A1 A1/A1 72.6 102.0 Boiling Point ( C/ F) -51.4/-60.5 -26.1/-15.0 Steam Pressure (25 C,MP a/77 F,psi) (gauge) 1.557/226 0.67/97 64.0 32.3 Nonflammable Non-flammable 0 0 1730 1300 Refrigerant charging in the liquid state Liquid charging Available Possible Chloride Safety Class Molecular Weight Saturated Steam Density (25 C,kg/m3/77 F, psi) Flammability *1 Ozone Depletion Coeff icient (ODP) *2 Global Warming Coefficient (GWP) Refrigerant Charging Method Replenishment of Refrigerant after a Refrigerant Leak *1 When CFC11 is used as a reference *2 When CO2 is used as a reference 2. Refrigerant composition R410A is a pseudo-azeotropic HFC blend and can almost be handled the same way as a single refrigerant, such as R22. To be safe, however, draw out the refrigerant from the cylinder in the liquid phase. If the refrigerant in the gaseous phase is drawn out, the composition of the remaining refrigerant will change and become unsuitable for use. If the refrigerant leaks out, it may be replenished. The entire refrigerant does not need to be replaced. 3. Pressure characteristics R410A has slightly higher operating pressure compared with R22. Pressure (gauge) Temperature ( C/ F ) R410A R134a R22 MPa/psi MPa/psi MPa/psi -20/-4 0.30/44 0.13/19 0.14/20 0/32 0.70/102 0.29/42 0.40/58 20/68 1.34/194 0.57/83 0.81/117 40/104 2.31/335 1.02/148 1.44/209 60/140 3.73/541 1.68/244 2.33/338 65/149 4.17/605 1.89/274 2.60/377 - 16 - [12] 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 system. Note that the ester oil used in the system has properties that are different from commercially available ester oil. Refrigerant Refrigerating machine oil R134a HAB R410A Ester oil 2. Effects of contaminants*1 Refrigerating machine oil used in the HFC system must be handled with special care to keep contaminants out. The table below shows the effect of contaminants in the refrigerating machine oil on the refrigeration cycle. 3. The effects of contaminants in the refrigerating machine oil on the refrigeration cycle. Cause Symptoms Water infiltration Frozen expansion valve and capillary tubes Hydrolysis Air infiltration Effects on the refrigerant cycle Sludge formation and adhesion Acid generation Oxidization Oil degradation Clogged expansion valve and capillary tubes Poor cooling performance Compressor overheat Motor insulation failure Burnt motor Coppering of the orbiting scroll Lock Burn-in on the orbiting scroll Oxidization Adhesion to expansion valve and capillary tubes Clogged expansion valve, capillary tubes, and drier Poor cooling performance Compressor overheat Infiltration of contaminants into the compressor Burn-in on the orbiting scroll Sludge formation and adhesion Clogged expansion valve and capillary tubes Poor cooling performance Compressor overheat Oil degradation Burn-in on the orbiting scroll Dust, dirt Infiltration of contaminants Mineral oil etc. *1. Contaminants is defined as moisture, air, processing oil, dust/dirt, wrong types of refrigerant, and refrigerating machine oil. - 17 - ™ Restrictions [1] T ypes and Maximum allowable Length of Cables 1. Wiring work (1) Notes 1) Have all electrical work performed by an authorized electrician according to the local regulations and instructions in this manual. 2) Install external transmission cables at least 5cm [1-31/32"] away from the power supply cable to avoid noise interference. (Donot put the control cable and power supply cable in the same conduit tube.) 3) Provide grounding for the outdoor unit as required. 4) Run the cable from the electric box of the indoor or outdoor unit in such way that the box is accessible for servicing. 5) Do not connect power supply wiring to the terminal block for transmission line. Doing so will damage the electronic components on the terminal block. 6) Use 2-core shielded cables as transmission cables. Use a separate 2-core control cable for each refrigerant system. Do not use a single multiple-core cable to connect indoor units that belong to different refrigerant systems. The use of a multiple-core cable may result in signal transmission errors and malfunctions. Unit Unit Unit Unit 2-core cable Multiplecore cable Remote controller Remote controller BC controller BC controller 2-core cable 7) When extending the transmission cable, be sure to extend the shield wire. (2) Control wiring Types and maximum allowable length of cables Control lines are categorized into 2 types: transmission line and remote controller line. Use the appropriate type of cables and observe the maximum allowable length specified for a given system. If a given system has a long transmission line or if a noise source is located near the unit, place the unit away from the noise source to reduce noise interference. PWFY-P100VM-E-BU Transmission cables MA Remote controller cables External input External output Cable diameter Shielding wire (2-core) CVVS, CPEVS or MVVS More than 1.25 mm2 Sheathed 2-core cable (shielded) CVVS 0.3 ~ 1.25 mm2 (0.75 ~ 1.25 mm2)*1 Sheathed multi-core cable (shielded) CVVS or MVVS 0.3 ~ 0.5 mm2 Sheathed multi-core cable (unshielded) CVV or MVV 0.3 ~ 1.25 mm2 Remarks - Max.length: 200 m Max.length: 100 m Rated voltage: L1-N: 220 ~ 240 V Rated load: 0.6 A Type of cable PWFY-P100/200VM-E/E1/E2-AU Transmission cables MA Remote controller cables External input External output Cable diameter Shielding wire (2-core) CVVS, CPEVS or MVVS More than 1.25 mm2 Sheathed 2-core cable CVV (unshielded) 0.3 ~ 1.25 mm2 (0.75 ~ 1.25 mm2)*1 Sheathed multi-core cable CVV or MVV (unshielded) 0.3 ~ 0.5 mm2 Sheathed multi-core cable (unshielded) CVV or MVV 0.3 ~ 1.25 mm2 Remarks - Max.length: 200 m Max.length: 100 m Rated voltage: L1-N: 220 ~ 240 V Rated load: 0.6 A Type of cable *1 Connected with simple remote controller. CVVS, MVVS: PVC insulated PVC jacketed shielded control cable CVV, MVV : PVC insulated PVC sheathed control cable CPEVS : PE insulated PVC jacketed shielded communication cable - 18 - [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. Unit or controller Unit Main/sub units MA remote controller 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. 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) 0, 01~50 (Note 1) No address setting required. (When operating with 2 remote controllers, the main/sub selector switch must be set. Outdoor unit Auxiliary units Address setting range BC controller (Main) 0, 51~100 (Note 1, 2, 3) Use the address that equals the sum of the smallest indoor unit address in the same refrigerant system and 50. 52~100 (Note 2, 3) Use the address that equals the sum of the address of the heat source unit in the same refrigerant system and 1. Factory setting 00 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. BC controller (Sub) Notes: 1. Address setting is not required for a single refrigerant system (with a few exception). 2. When setting the unit and outdoor auxiliary unit address to “100,” make it “50.” 3. When an address in a system overlapped with the heat source unit or BC controller (Main) address of other refrigerant system, choose an another address within the set range that is not in use (with a few exceptions). 4. BC controller is found only in the R2 systems. (2) Unit port switch setting (R2 series (Factory Setting: “0”)) Make the settings for the port switch that corresponds to the connected BC (Main/Sub) controller. When more than two ports are used, make the setting on the port with a smaller port number. (3) Various start-stop controls (Unit settings) Each unit (or group of units) can be controlled individually by setting SW 1-3 and 1-4. Function Operation of the indoor unit when the operation is resumed after the unit was stopped Power ON/OFF by the plug (Note 1) Unit will go into operation regardless of its operation status before power off (power failure). (In approx. 5 minutes) Automatic restoration after power failure Unit will go into operation if it was in operation when the power was turned off (or cut off due to power failure). (In approx. 5 minutes) Unit will remain stopped regardless of its operation status before power off (power failure). Setting (SW1) (Note 2) 3 4 OFF ON ON ON OFF OFF (Note 1) Do not cut off power to the outdoor unit. Cutting off the power supply to the outdoor unit will cut off the power supply to the crankcase heater and may cause the compressor to malfunction when the unit is put back into operation. (Note 2) Requires that the dipswitch settings for all the units in the group be made. - 19 - [3] Examples of system connection 1. Connecting remote controller, indoor and outdoor transmission cabls • Connect unit TB5 and outdoor unit TB3. (Non-polarized 2-wire (shield)) The “S” on unit TB5 is a shielding wire connection. For specifications about the connecting cables, refer to the outdoor unit installation manual. • Install a remote controller following the manual supplied with the remote controller. 2. System using MA remote controller (1) In the case of single refrigerant system (Automatic address set-up) • Connect the “1” and “2” on unit TB15 to a MA remote controller. (Non-polarized 2-wire) MA Remote controller (A) (B) (C) TB3 TB02 TB5 TB15 M1M2 S M1M2 S 1 2 S (E) M1M2 (A) Outdoor unit (B) BC controller (C) PWFY-P100VM-E-BU (D) PWFY-P100, 200VM-E/E1/E2-AU (E) MA remote controller earth cable (shielded) (D) (shielding wire) TB5 M1M2 S • (E) TB15 1 2 DC 10 to 13 V between 1 and 2 (MA remote controller) PWFY- P100VM-E-BU PWFY- P100, 200VM-E/E1/E2-AU (B) (B) S 2 (D) 2 (D) (A) 1 S 1 S (A) M2 M2 (E) M1 DC10~13V (E) M1 DC10~13V (C) L • N A B 1 2 (A) Non-polarized (B) TB15 (MA remote controller cables) (C) MA remote Controller (D) TB5 (Transmission cables) (E) TB2 (Power supply wiring) (C) L N A 1 B 2 The MA remote controller cannot be used at the same time or interchangeably. Note: Ensure that the wiring is not pinched when fitting the terminal box cover. Pinching the wiring may cut it. • • • • Caution: Use wire with supplemental insulation. Input to TB142A, TB142B, and TB142C should not carry voltage. Cables from equipment connected to external input/output should have supplemental insulation. Use a single multiple-core cable for external input/output to allow for connection to the PG screw. Caution: Wire the power supply so that no tension is imparted. Otherwise disconnection, heating or fire result. - 20 - [4] Restrictions on piping length The same piping length restrictions apply as the ones that apply to the conventional indoor units. Refer to the Service Manual that came with the outdoor unit for restrictions on piping length. Design the water piping system so that the total amount of water in the entire system will be as shown in the table below. - 21 - £ Components of the Unit [1] Appearance of the Components and Refrigerant Circuit < PWFY-P100VM-E-BU > Pressure sensor (63LS) Pressure switch (63H1) Heat exchanger assy Thermistor (TH8) Pressure sensor (63HS) Heat exchanger assy Linear expansion valve Linear expansion valve coil (LEV2W) Thermistor (TH11) Thermistor (TH13) Check joint Linear expansion valve (LEV1W) Compressor Thermistor (TH6) Thermistor (TH22) < PWFY-P100, 200VM-E/E1-AU > Heat exchanger assy Thermistor (TH8,TH23) Linear expansion valve (LEV1Wa,b) Solenoid valve Solenoid valve coil (SV) Check valve Thermistor (TH6,TH22) - 22 - < PWFY-P100, 200VM-E2-AU > Thermistor (TH23) Heat exchanger assy Thermistor (TH8) Check valve (CV1) Linear expansion valve (LEV1Wa,LEV1Wb) Solenoid valve Solenoid valve coil (SVG) Solenoid valve Solenoid valve coil (SV1) Check valve (CV2) Solenoid valve Solenoid valve coil (SVL) Thermistor (TH22) Thermistor (TH6) - 23 - [2] Control Box < PWFY-P100VM-E-BU > Thermistor (THHS) INV board Fan Reactor Noise filter Fuse Terminal block (TB2) Control board Terminal block (TB5) Terminal block (TB15) < PWFY-P100, 200VM-E/E1-AU > Transformer Fuse Control board Terminal block assy (TB5) Terminal block assy (TB15) DSA board Terminal block assy (TB2) - 24 - < PWFY-P100, 200VM-E2-AU > Transformer Fuse Control board Terminal block assy (TB5) Terminal block assy (TB15) Fuse DSA board Terminal block assy (TB2) - 25 - - 26 - LED4 CN3A LED1 CN2M CN422 CN421 CN401 CN402 CN403 CN404 CN405 CN63LS CN63HS CN3T TB141B SWP1 SWP2 SWP3 F631 CN631 (IN1) (IN2) (IN3) (IN4) (IN5) (IN6) (IN7) (IN8) TB142C SW5 SW1 SW3 (COM+) SW2 SW4 TB142A TB142A TB142B TB142B TB142C TB142C TB142C TB142C CN661 (63H1) TB141A, TB142A, TB142B, TB142C : Refer to 5 Electrical Wiring Diagram TB141A TB141A TB141A TB141A (OUT1) (OUT2) (OUT3) (OUT4) LED3 SWU1 SWU2 SWU3 F01 CNLVC CNLVB CNLVA CN2 CN4 CN52C CN506A,B CN501 CN507 CNAC [3] Circuit Board 1. Main board < PWFY-P100VM-E-BU, PWFY-P100, 200VM-E-AU, PWFY-P100, 200VM-E1-AU, PWFY-P100, 200VM-E2-AU > 2. Power board < PWFY-P100VM-E-BU > CN5 CN4 CN3 CN2 U V LD2 LD9 LD1 W R S - 27 - 3. Noise filter < PWFY-P100VM-E-BU > E2 E1 CNAC1 NI LI E3 CNAC2 CN5 NO CN52C LO 4. DSA < PWFY-P100,200VM-E-AU, PWFY-P100,200VM-E1-AU, PWFY-P100,200VM-E2-AU > CN1 - 28 - ¢ Remote Controller [1] Functions and Specifications of MA Remote Controller MA remote controller is connected to each unit. Function/specification MA remote controller Remote controller address setting Not required Indoor/outdoor unit address setting Not required (required only by a system with one outdoor unit) Wiring method Non-polar 2 wires ✻ Daisy-chain the units with non-polar 2 wires when running a group operation. Installation location of remote controller Connectable to any unit in the group Making group changes MA remote controller wires between units require rewiring. - 29 - [2] Interlocking Setting via the MA Remote Controller 1. Remote controller function selection via the MA remote controller Function selection of remote controller The setting of the following remote controller functions can be changed using the remote controller function selection mode. Change the setting when needed. Item 2 Item 1 Item 3 (Setting content) 1. Change Language (“CHANGE LANGUAGE”) Language setting to display • Display in multiple languages is possible 2. Function limit (“FUNCTION SELECTION”) (1) Operation function limit setting (operation lock) (“LOCKING FUNCTION”) • Setting the range of operation limit (operation lock) (2) Operation mode skip setting (“SELECT MODE”) • Setting the use or non-use of each operation mode (3) Temperature range limit setting (“LIMIT TEMP FUNCTION”) • Setting the temperature adjustable range (maximum, minimum) (1) Remote controller main/sub setting (“CONTROLLER MAIN/ SUB”) • Selecting main or sub remote controller * When two remote controllers are connected to one group, one controller must be set to sub. (2) Use of clock setting (“CLOCK”) • Setting the use or non-use of clock function (3) Timer function setting (“WEEKLY TIMER”) • Setting the timer type (4) Contact number setting for error situation (“CALL.”) • Contact number display in case of error • Setting the telephone number (5) Temp off set setting (“TEMP OFF SET FUNCTION”) • Setting the use or non-use of setback amount setting (1) Temperature display ˚C/˚F setting (“TEMP MODE ˚C/˚F”) • Setting the temperature unit (˚C or ˚F) to display (2) Water temperature display setting (“WATER TEMP DISP SELECT”) • Setting the use or non-use of the display of water temperature 3. Mode selection (“MODE SELECTION”) 4. Display change (“DISP MODE SETTING”) Function selection flowchart [1] Stop the unit to start remote controller function selection mode. [2] Select from item 1. 3) [5] Setting completed. [6] Change the display to the normal one. (End) [3] Select from item 2. [4] Make the setting. (Details are specified in item Normal display (Display when the unit is not running) (Hold down the E button and press the D button for two seconds.) * The display cannot be changed during the test run and the self diagnosis. Item 1 Press the G button. Change Language (“CHANGE LANGUAGE”) (Hold down the E button and press the D button for two seconds.) * The remote controller records the setting that is made in this way. Remote Controller Function Selection Mode See [3]–1 Item 3 (Setting content) Item 2 Press the E button. Function limit (“FUNCTION SELECTION”) Press the Operation function limit setting (“LOCKING FUNCTION”) Press the G button. Operation mode skip setting (“SELECT MODE”) G button. Temperature range limit setting (“LIMIT TEMP FUNCTION”) Press the Press the E button. E button. Press the Mode selection G button. Remote controller main/sub setting (“CONTROLLER MAIN/SUB”) Press the G button. Use of clock setting (“CLOCK”) (“MODE SELECTION”) Press the E button. NOTE Timer operation stops when the display for remote controller function selection is changed to the normal one. Press the D button. Dot display The language that is selected in CHANGE LANGUAGE mode appears on this display. English is set in this manual. See [3]–2. (1) See [3]–2. (2) See [3]–2. (3) Press the D button. See [3]–3. (1) F I TEMP. Timer function setting (“WEEKLY TIMER”) See [3]–3. (3) Contact number setting for error situation (“CALL.”) See [3]–3. (4) Temp off set setting (“TEMP OFF SET FUNCTION”) See [3]–3. (5) A E G MENU BACK PAR-W21MAA MONITOR/SET (“DISP MODE SETTING”) ON/OFF DAY CLOCK INITIAL SETTING CHECK CIR.WATER TEST CLEAR B C Press the Display change G button. ON/OFF See [3]–3. (2) Temperature display ˚C/˚F setting (“TEMP MODE ˚C/˚F”) Press the G button. Water temperature display setting (“WATER TEMP DISP SELECT”) - 30 - Press the D button. See [3]–4. (1) See [3]–4. (2) D H [3]–3. Mode selection setting Detailed setting (1) Remote controller main/sub setting • To switch the setting, press the [ ON/OFF] button D. 1 Main : The controller will be the main controller. 2 Sub : The controller will be the sub controller. [3]–1. CHANGE LANGUAGE setting The language that appears on the dot display can be selected. • Press the [ MENU] button to change the language. 1 English (GB), 2 German (D), 3 Spanish (E), 4 Russian (RU), 5 Italian (I), 6 French (F), 7 Swedish (2) Use of clock setting • To switch the setting, press the [ ON/OFF] button D. 1 ON : The clock function can be used. 2 OFF : The clock function cannot be used. [3]–2. Function limit (1) Operation function limit setting (operation lock) • To switch the setting, press the [ ON/OFF] button. 1 no1 : Operation lock setting is made on all buttons other than the [ ON/OFF] button. 2 no2 : Operation lock setting is made on all buttons. 3 OFF (Initial setting value) : Operation lock setting is not made. * To make the operation lock setting valid on the normal screen, it is necessary to press buttons (Press and hold down the [CIR.WATER] and [ ON/OFF] buttons at the same time for two seconds.) on the normal screen after the above setting is made. (2) Operation mode skip setting After setting is changed, the operation mode can not be changed within the changed range. • To switch the following settings, press the [ ON/OFF] button. 1 Heating mode : Sets the use or non-use of the Heating mode. 2 Heating ECO mode : Sets the use or non-use of the Heating ECO mode. 3 Hot Water mode : Sets the use or non-use of the Hot Water mode. 4 Anti-freeze mode : Sets the use or non-use of the Anti-freeze mode. 5 Cooling mode : Sets the use or non-use of the Cooling mode. 6 OFF (Initial setting value) : Operation mode skip is not executed. * When the setting, other than OFF, is made, the skip settings of the Heating, Heating ECO, Hot Water, Anti-freeze, and Cooling modes are executed at the same time. * A mode that is not available on the unit to connect cannot be used even if the setting is “AVAILABLE.” (3) Temperature range limit setting After this setting is made, the temperature can be changed within the set range. • To switch the setting, press the [ ON/OFF] button. 1 LIMIT TEMP HEATING MODE: The temperature range can be changed on heating mode. 2 LIMIT TEMP HOT WATER MODE: The temperature range can be changed on heating/hot water mode. 3 LIMIT TEMP ANTI-FREEZE MODE: The temperature range can be changed on anti-freeze mode. 4 LIMIT TEMP COOLING MODE: The temperature range can be changed on cooling mode. 5 OFF (Initial setting) : The temperature range limit is not active. * When the setting, other than OFF, is made, the temperature range limit setting on hot water, anti-freeze and cooling mode is made at the same time. However, the range cannot be limited when the set temperature range has not changed. • To increase or decrease the temperature, press the [ TEMP. or ] button. • Settable range Hot Water mode : Lower limit: 30 ~70 ˚C (87 ~158 ˚F) Upper limit: 70 ~30 ˚C (158 ~ 87 ˚F) Heating mode : Lower limit: 30 ~45 ˚C (87 ~113 ˚F) Upper limit: 45 ~30 ˚C (113 ~ 87 ˚F) Cooling mode : Lower limit: 10 ~30 ˚C (50 ~ 87 ˚F) Upper limit: 30 ~10 ˚C (87 ~ 50 ˚F) * The settable range varies depending on the unit to connect. (3) Timer function setting • To switch the setting, press the [ ON/OFF] button D (Choose one of the followings.). 1 WEEKLY TIMER (Initial setting value): The weekly timer can be used. 2 AUTO OFF TIMER : The auto off timer can be used. 3 SIMPLE TIMER : The simple timer can be used. 4 TIMER MODE OFF : The timer mode cannot be used. * When the use of clock setting is OFF, the “WEEKLY TIMER” cannot be used. (4) Contact number setting for error situation • To switch the setting, press the [ ON/OFF] button D. 1 CALL OFF : The set contact numbers are not displayed in case of error. 2 CALL **** *** **** : The set contact numbers are displayed in case of error. CALL_ : The contact number can be set when the display is as shown on the left. • Setting the contact numbers To set the contact numbers, follow the following procedures. Move the flashing cursor to set numbers. Press the [ TEMP. or ] button F to move the cursor to the right (left). Press the [ CLOCK or ] button C to set the numbers. (5) Temp off set setting • To switch the following settings, press the [ ON/OFF] button D. 1 ON : The setback amount setting is displayed under the water temperature initial setting mode. 2 OFF : The setback amount setting is not displayed under the water temperature initial setting mode. [3]–4. Display change setting (1) Temperature display ˚C/˚F setting • To switch the setting, press the [ ON/OFF] button D. 1 ˚C: The temperature unit ˚C is used. 2 ˚F: The temperature unit ˚F is used. (2) Water temperature display setting • To switch the setting, press the [ ON/OFF] button D. 1 ON : The water temperature is displayed. 2 OFF : The water temperature is not displayed. - 31 - 63LS TH11 t∞ TH8 t∞ TH6 t∞ TH13 t∞ - 32 - CN63LS red CN403 red MS V white 3~ black U red RS4 12 CN5 red RS3 X512 X513 X514 12 CN3 t∞ THHS red U CT1 LED1 X516 X517 blue red SW5 ON OFF 1 5 RS1 RS2 CB1 + CB2 + CB3 + ON OFF 1 ON OFF 1 SW2 SW1 gray SW4 IN1 red red 2 L4 1 3 CNAC1 E3 3 CNAC2 1 red RS red CY4 N blue U CX1 Z1 L2 NI L1 CY1 R1 CY2 CY3 CX2 CX3 CX4 CY6 CX5 blue E2 gray DSA E1 gray U TB2 yellow/green Z2 2 CN5 red 1 2 CN52C black 1 6 5 CNLVB 4 3 2 1 CT1 NO 2 1 7 6 5 6 5 CNLVA 4 3 blue 2 1 CN2 CN4 2 1 CN52C blue 2 1 CN506B 2 1 X506 CN506A 2 1 F01 AC250V CNAC red 1 2 6.3A Power Supply ~220/230/240V 50Hz/60Hz L red LI L3 CX6 CX7 52C CY5 24V LO U ZNR01 Noise Filter S(SHIELD) TB15 To MA remote controller 1 gray gray COM+ IN6 COM+ IN5 IN7 IN8 *7 TB142C SWU3 SWU1 SWU2 SWP3 SWP2 SWP1 orange black blue N CN631 3 pink Power Supply circuit F631 DC700V 4A P 1 Unit address setting(SWU1,SWU2) Connection No.(SWU3) *6 TB142B IN3 IN4 10 10 blue ACL IN2 *5 TB142A ON 10 OFF 1 ON 10 OFF 1 SW3 S(SHIELD) TB5 INV control circuit To outdoor unit/ BC controller M1 M2 yellow purple S R PFC black W CT2 CIS Control Board LED1 Display setting(SW2) Function setting(SW1,SW3,SW4) INV Board CYP TB141B CPS + OUT5 OUT7 OUT6 X515 1 3 CN661 yellow P LED3:Lit when powered LED4:Remote controller when powered white V 12 567 CN2 OUT1 OUT3 OUT2 OUT4 X511 CYN IPM 12 CN4 TB141A *4 CN3A 3 1 blue CN2M 21 blue CN422 3 2 1 blue CN421 3 2 1 black 21 CN401 CN402 21 green 21 CN404 21 black CN405 21 yellow 321 3 2 1 CN63HS W Moter (Compressor) black CN422 3 2 1 blue 4-20mA CN421 3 2 1 black 4-20mA 1 2 3 TH22 t∞ 1 2 3 63HS 63H1 Fan motor (DC) Fan motor (DC) gray 3 2 1 CN-E1 M LEV1W M LEV2W M M Function Operation ON/OFF Defrost Compressor Error signal Function Common Hot water Heating ECO Anti-freeze Symbol Explanation Pressure High pressure switch 63H1 switch (High pressure protection for the booster unit) 63HS Discharge pressure Pressure sensor 63LS Low pressure 52C Magnetic relay(main circuit) ACL AC reactor CT1,CT2 Current sensor(AC) LEV1W Linear BC controller/outdoor unit expansion valve LEV2W Booster unit Power supply TB2 Terminal block TB5 Outdoor unit/BC controller TB15 MA remote controller TH11 Thermistor Compressor discharge temp TH13 Evaporator outlet temp TH22 liquid pipe temp TH6 water inlet temp TH8 water outlet temp IGBT temp THHS <Symbol explanation> Symbol COM+ IN5 IN6 IN7 *7 TB142C(input) Symbol Function IN3 Connection demand IN4 Operation ON/OFF *6 TB142B(input) Symbol Function IN1 Pump interlock *5 TB142A(input) Symbol OUT1 OUT2 OUT3 OUT4 <HIGH VOLTAGE WARNING> Control box houses high-voltage parts. Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes,and confirm that the voltage CN631 on Control Board has dropped to DC20V or less. <CAUTION FOR INSTALLATION> Prior to installation,read the Installation Manual carefully. *1.Single-dotted lines indicate wiring not supplied with the unit. *2.Dot-dash lines indicate the control box boundaries. *3.Faston terminals have a locking function. Make sure the terminals are securely locked in place after insertion. Press the tab on the terminals to removed them. *4 TB141A(output) ∞ Electrical Wiring Diagram [1] PWFY-P100VM-E-BU t∞ TH8 CN422 3 2 1 blue 4-20mA CN421 3 2 1 black 4-20mA t∞ TH6 TH23 t∞ TH22 t∞ CN403 red - 33 - TB141A *4 CN3A 3 1 blue CN2M 21 blue CN422 3 2 1 blue CN421 3 2 1 black CN402 21 green 21 CN404 21 black CN405 21 yellow X512 X513 X514 OUT1 OUT3 OUT2 OUT4 X511 LED1 X516 X517 OUT5 OUT7 OUT6 X515 M2 SW2 SW1 SW4 SW3 IN1 *6 TB142B 2 *7 TB142C TB15 COM+ IN6 IN8 COM+ IN5 IN7 To MA remote controller 1 SWU1 SWU2 SWP3 SWP2 SWP1 SWU3 U L red N blue gray CN1 ZNR1 1 U 3 TB2 yellow/green red DSA Board DSA1 *3 M LEV1Wb 6 5 CNLVC 4 3 2 1 SV1 M LEV1Wa 3 3 6 5 CNLVB 4 3 2 1 X502 CN502 black 1 CN507 1 F01 AC250V CNAC 6.3A red 1 2 Power Supply ~220/230/240V 50Hz/60Hz ZNR01 Unit address setting(SWU1,SWU2) Connection No.(SWU3) IN3 IN4 10 10 orange black *5 TB142A ON 10 OFF 1 ON 10 OFF 1 S(SHIELD) TB5 ON OFF 1 ON OFF 1 To outdoor unit/ BC controller/ M1 yellow purple TB141B 5 SW5 ON OFF 1 Control Board LED1 Display setting(SW2) Function setting(SW1,SW3,SW4) LED3:Lit when powered LED4:Remote controller when powered 3 1 CN3T red T01 Function Operation ON/OFF Defrost Error signal Function Common Heating Heating ECO Anti-freeze Cooling Symbol SV1 LEV1Wa LEV1Wb TB2 TB5 TB15 TH22 TH23 TH6 TH8 Thermistor Solenoid valve Linear expansion valve Terminal block Explanation For opening/closing the bypass circuit BC controller/outdoor unit BC controller/outdoor unit Power supply Outdoor unit/BC controller MA remote controller liquid pipe temp gas pipe temp water inlet temp water outlet temp <Symbol explanation> Symbol COM+ IN5 IN6 IN7 IN8 *7 TB142C(input) Symbol Function IN3 Connection demand IN4 Operation ON/OFF *6 TB142B(input) Symbol Function IN1 Flow switch *5 TB142A(input) Symbol OUT1 OUT2 OUT4 *4 TB141A(output) Model name Appliance P100 *3 do not exist P200 *3 exist <CAUTION FOR INSTALLATION> Prior to installation,read the Installation Manual carefully. *1.Single-dotted lines indicate wiring not supplied with the unit. *2.Dot-dash lines indicate the control box boundaries. *3.Difference of appliance [2] PWFY-P100, 200VM-E-AU, PWFY-P100, 200VM-E1-AU TH22 t˚ - 34 - X514 blue X513 black X512 OUT1 X511 OUT3 OUT2 OUT4 TB141A *4 CN3A 3 1 blue CN2M 21 blue CN422 3 2 1 blue CN422 3 2 1 blue CN402 21 green CN403 red CN421 3 2 1 black t˚ TH8 21 CN404 21 black CN405 21 yellow CN421 3 2 1 black 4-20mA 4-20mA t˚ TH6 TH23 t˚ LED1 X516 X517 OUT5 OUT7 OUT6 X515 M2 SW2 SW1 SW4 SW3 IN1 10 10 2 3 TB15 To MA remote controller 1 SVL 1 white F02 AC250V 3.15A T red COM+ IN6 IN8 COM+ IN5 IN7 CNSV1 IN3 IN4 *7 TB142C SWU3 SWU1 SWU2 SWP3 SWP2 SWP1 2 L N red blue gray 3 TB2 yellow/green red CN1 1 U ZNR1 DSA Board DSA1 *3 M LEV1Wb LEV1Wa 6 5 CNLVC 4 3 2 1 SV1 M 3 6 5 CNLVB 4 3 2 1 CN502 X502 black 1 3 CNAC red 1 2 CN507 1 Power Supply ~220/230/240V 50Hz/60Hz CNSV2 red red SVG 1 F03 AC250V 3.15A T U ZNR01 Unit address setting(SWU1,SWU2) Connection No.(SWU3) *6 TB142B orange black IN2 *5 TB142A ON 10 OFF 1 ON 10 OFF 1 S(SHIELD) TB5 ON OFF 1 ON OFF 1 To outdoor unit/ BC controller/ M1 5 SW5 ON OFF 1 yellow purple TB141B Control Board LED1 Display setting(SW2) Function setting(SW1,SW3,SW4,SW5) LED3:Lit when powered LED4:Remote controller when powered 3 1 CN3T red F01 AC250V 6.3A T T01 Function Common Heating Heating ECO Anti-freeze Cooling LEV1Wa LEV1Wb TB2 TB5 TB15 TH22 TH23 TH6 TH8 SVL SVG Thermistor Linear expansion valve Terminal block Symbol Explanation Solenoid valve SV1 For opening/closing the bypass circuit For opening/closing the gas refrigerant circuit For opening/closing the liquid refrigerant circuit BC controller/outdoor unit BC controller/outdoor unit Power supply Outdoor unit/BC controller MA remote controller liquid pipe temp gas pipe temp water inlet temp water outlet temp <Symbol explanation> Symbol COM+ IN5 IN6 IN7 IN8 *7 TB142C(input) Symbol Function IN3 Connection demand IN4 Operation ON/OFF *6 TB142B(input) Symbol Function Flow switch IN1 *5 TB142A(input) Symbol Function Operation ON/OFF (Voltage contact) OUT1 OUT2 Defrost Error signal OUT4 OUT3 is no function. *4 TB141A(output) Model name Appliance P100 *3 do not exist P200 *3 exist <CAUTION FOR INSTALLATION> ·Prior to installation,read the Installation Manual carefully. *1.Single-dotted lines indicate wiring not supplied with the unit. *2.Dot-dash lines indicate the control box boundaries. *3.Difference of appliance [3] PWFY-P100, 200VM-E2-AU § Refrigerant Circuit [1] Refrigerant Circuit Diagram < PWFY-P100VM-E-BU > ST2 CJ LEV1W TH22 LEV2W TH6 ST1 Water inlet Brazed screw 63HS 63LS ST3 TH8 TH11 Water outlet screw Brazed PHEX TH13 PHEX 63H1 COMP < PWFY-P100VM-E-AU, PWFY-P100VM-E1-AU > Flow switch *1 Field supply Gas piping TH23 ST2 Brazed Field supply TH8 Screw CV1 Water outlet Brazed Brazed SV Liquid LEV1Wa ST3 TH22 TH6 piping Brazed Screw Water inlet PHEX *1 A flow switch is not supplied with PWFY-P100VM-E-AU. Please therefore supply it by yourself. < PWFY-P200VM-E-AU, PWFY-P200VM-E1-AU > Flow switch *1 Field supply Gas piping Brazed piping Screw CV1 SV Liquid TH8 TH23 ST2 Field supply Brazed Brazed LEV1Wa TH6 TH22 ST4 LEV1Wb Brazed PHEX Screw Water inlet *1 A flow switch is not supplied with PWFY-P200VM-E-AU. Please therefore supply it by yourself. - 35 - Water outlet < PWFY-P100VM-E2-AU > Flow switch Field supply Field supply SVG TH23 ST2 Gas piping TH8 Screw Brazed Brazed Brazed Water outlet CV1 CV2 SV SVL Liquid piping LEV1Wa ST3 TH22 TH6 Screw Brazed Water inlet < PWFY-P200VM-E2-AU > Flow switch Field supply Field supply SVG TH23 ST2 Gas piping TH8 Screw Brazed Brazed Brazed Water outlet CV1 CV2 SV LEV1Wa SVL Liquid TH22 ST4 LEV1Wb piping TH6 Screw Water inlet Brazed [2] Pump interlock PWFY-P100/P200VM-E/E1/E2-AU, E/E1/E2 *PWFY-P100/P200VM-E/E1 ONLY Implement the following for a PWFY-P100/P200VM-E/E1-AU unit that meets conditions (1) and (2) below: • Pump interlock • Use of a solenoid valve kit (PAC-SV01PW-E) packaged Conditions (1) When Y, Zubadan, WY, or Replace-Y series models are used for the outdoor units (2) When PWFY-P100/P200VM-E/E1-AU units are used for heating only and are placed on the same refrigerant circuit as the indoor units or other PWFY-P100/P200VM-E/E1/E2-AU units However, this does not apply in cases where brine is added to the water line or cases where the unit is run in heating mode only as a refrigerant circuit system (Fig.C) - 36 - A B [3] Functions of Principal Parts 1. Unit Symbols Part (functions) Name Compres- MC1 sor High 63HS -pressure sensor Notes Usage Adjusts the amount of circulating refrigerant by adjusting the operating frequency based on the operating pressure data 1) Detects high pressure 2) Regulates frequency and provides high-pressure protection Specifications High-pressure shell rotary compressor 20˚C[68˚F] : 0.583Ω 63HS 123 Connector Pressure 0~3.60 MPa [522psi] Vout 0.5~3.5V 0.071V/0.098 MPa [14psi] Pressure [MPa] =1.38 x Vout [V]-0.69 Pressure [psi] =(1.38 x Vout [V] - 0.69) x 145 GND (Black) Vout (White) Vcc (DC5V) (Red) 1 2 3 Low 63LS -pressure sensor 1) Detects low pressure 2) Provides low-pressure protection 63LS 123 Connector Pressure 0~1.7 MPa [247psi] Vout 0.5~3.5V 0.173V/0.098 MPa [14psi] Pressure [MPa] =0.566 x Vout [V] - 0.283 Pressure [psi] =(0.566 x Vout [V] - 0.283) x 145 1 2 3 Pressure switch 63H1 GND (Black) Vout (White) Vcc (DC5V) (Red) 1) Detects high pressure 3.60MPa[522psi] OFF setting 2) Provides high-pressure protection - 37 - Check method Symbols Part (functions) Name Thermistor TH11 (Discharge) Notes Usage Specifications 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 For LEV2 control Controls compressor suction superheat based on the difference with the saturation temperature yielded from the TH13 and 63LS values. TH13 TH6 (Inlet water temperature) Detects inlet water temperature TH22 TH23 Controls LEV1, using TH22, TH23 TH8 (Outlet water temperature) Detects water temperature at the outlet THHS Inverter heat sink temperature Heat sink Controls inverter cooling fan, using THHS temperature. 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 Check method 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 Solenoid valve PWFY-P100,200 A refrigerant bypass circuit that SV1 VM-E/E1/E2-AU functions to prevent water heat Bypass exchanger from icing up during the only solenoid defrost cycle. valve (defrost) AC220~240V Open when energized Closed when not energized Continuity check with a tester Linear SVG PWFY-P100, Stops LEV1W(a,b) leaking due to expansion LEV leak 200VM-E2-AU PHEX freezing prevention. valve protect only solenoid valve (gas) AC230V Open during energized Closed during not energized Continuity check with a tester SVL PWFY-P100, Stops LEV1W(a,b) leaking due to LEV leak 200VM-E2-AU PHEX freezing prevention. protect only solenoid valve (liquid) AC220~240V Open during energized Closed during not energized Continuity check with a tester 1 Adjusts superheat at the unit heat DC12V exchanger outlet during cooling Opening of stepping motor 2 Adjusts subcool at the unit heat driving valve 0-(1400) pulses exchanger outlet during hot water or heating LEV1 Refer to the section on continuity test with a tester Continuity between white-red-orange Continuity between yellow-brown-blue White M Red Orange Switch LEV2 PWFY-P100 VM-E-BU only Flow switch PWFY-P100,200 Detects water flow VM-E1/E2-AU only Adjusts compressor suction superheat - 38 - DC12V Opening of a valve driven by a stepping motor 0-480 pulses (direct driven type) P100: ON when water flow is 1.1m3/h or more P200: ON when water flow is 1.8 m3/h or more Yellow Brown Blue ¶ Control [1] Dip Switch Functions and Their Factory Settings 1. Unit (1) Main board Error history deleted Normal Resets the pre-error data overwrite protection. *4 Keep overwrite protection Sets the restart interval for the delay mode. *4, *5 9 seconds Deleted Reset overwrite protection *6 9 minutes and 59 seconds Before power on *4 This function is available on ver. 1.24 or later. *5 When setting DipSW3-10 to ON, make sure that the water flow rate in the system is greater than the minimum design amount. *6 This switch is reset when set from OFF to ON. - 39 - 2. Frequency control <PWFY-P100VM-E-BU> • The following table shows the frequency change of the inverter compressor during normal operation. Model Frequency/heating Speed PWFY-P100VM-E-BU 25~100Hz 2Hz/sec. (1) Pressure limit The maximum limit of high pressure (Pd) is set for frequency level. If this limit is exceeded, the frequency will be reduced every 1 minute. (2) Discharge temperature limit • Control is performed 1 min after compressor start-up and every 1 min thereafter. (3) 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) 1 min after either compressor start up or the completion of defrost operation (b) 1 min 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 set tempera ture. 3. Subcool control for Heating or Hot water mode (Linear expantion valve <LEV1W(a,b)>) • The amount of subcool is controlled by LEV1W(a,b) based on the differential between liquid refrigerant temperature (TH22) and condensing temperature every 1 miniute. • Defrost operation (1) Booster Unit (PWFY-P100VM-E-BU) It stays closed at (LEV1W = 0 pulse) during defrost operation (2) HEX Unit (PWFY-P100, 200VM-E/E1/E2-AU) It depends on inletwater temperature (TH6) as below. defrost start TB142A IN1 *1. TH7 - Outdoor unit's thermistor for ambient temperature *2. High or Low mean as below Open High Low Short 16˚C Outdoor ambient temperature(TH7*1) 18˚C TH6 TH7 < -10 TH7 -10 Inletwater temperature(TH6) Low*2 High*2 LEV1Wa, b = opened. SV as bypass circuit for PHEX = shut off. LEV1Wa, b = closed. SV as bypass circuit for PHEX = open. 4. Superheat control for Cooling mode (Linear expantion valve <LEV1Wa,b>) < PWFY-P100/200VM-E/E1/E2-AU> • The amount of superheat is controlled by LEV1W(a,b) based on the differential between gas refrigerant temperature (TH23) and liquid refrigerant temperature (TH22) every 1 miniute. - 40 - 5. Control at initial startup • When the unit is started for the first time, it will run the following course of operation. <Flow chart of initial operation mode> ✻Do not operate the unit in the initial operation mode 12 or more hours after power on. Less than 12 hours after power on Initial operation mode begins Frequency is fixed at 25 Hz for one minute after startup. Initial operation mode completed 6. Control box cooling System <PWFY-P100VM-E-BU> On the PWFY-P100VM-E-BU model, the cooling fan operates for the period between one minute before compressor startup and one minute after compressor stoppage to prevent INV temperature from rising. 7. Super heat control of the high-side (R134a) of the binary cycle. (Linear expansion valve <LEV2W>) <PWFY-P100VM-E-BU> (1) LEV2W control (a) LEV2W control range. 0 LEV2W 480 pulses (b) LEV2W Control method LEV2W Hot Water Pd/Ps < 1.7 Pd/Ps Down 1.7 TdSH Down 15 TdSH > 15 SH < 2 Down 2 < SH < 4 Down SH 5 0 5 < SH 7 Up 4 7 < SH Up *TdSH = TH11 - T(63HS) *Pd/Ps = 6SHS/63LS *SH = TH13 - T(63LS) 8. Operation mode (1) Unit operation modes An operation mode can be selected from the following modes on the remote controller. PWFY-P100VM-E-BU PWFY-P100/P200VM-E/E1/E2-AU 1 Hot Water Heating 2 - Cooling - 41 - • 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. Never measure the insulation resistance of the transmission terminal block for the MA remote controller. 3 Confirm that the ball valves of outdoor unit are fully opened at both gas and liquid sides. Note: 1. Make sure to tighten the cap. 4 Check the input voltage to the power supply terminal block TB2. [2] Test Run Method 1 A 0 2 9 3 8 TEMP. ON/OFF 4 7 MENU BACK 5 MONITOR/SET PAR-W21MAA ON/OFF DAY CLOCK INITIAL SETTING CHECK CIR.WATER 6 TEST 1 2 3 4 5 6 7 8 9 0 A * [Set Temperature] buttons ( Down/ Up buttons) [TIMER MENU] button (MONITOR/SET button) [Mode] button (Return button) [Set Time] buttons ( Back/ Ahead buttons) [TIMER ON/OFF] button (SET DAY button) [CHECK] button (CLEAR button) [TEST RUN] button Not available [CIR. WATER] button ( <Enter> button) Down/ Up buttons) [INITIAL SETTING] button ( [ON/OFF] button Opening the lid. CLEAR Operation procedures Turn on the main power. "PLEASE WAIT" appears on the LCD for up to five minutes. Press the Test button twice. "TEST RUN" will appear on the LCD. Cancel the test run by pressing the ON/OFF button. Stop Note 1: Refer to the following pages if an error code appears on the remote controller or when the unit malfunctions. 2: The OFF timer will automatically stop the test run after 2 hours. [3] Refrigerant Unit type Refrigerant type Refrigerant charge PWFY-P100VM-E-BU R134a 1.1kg - 42 - [4] Symptoms that do not Signify Problems Symptom Remote controller display 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. The display shown right will appear on the indoor unit remote controller for about 5 minutes when the main power source is turned on. "PLEASE WAIT" ("HO") blinking display The system is under starting up. Operate the remote controller after the blinking of “PLEASE WAIT” (“HO”) is disappeared. Normal display Sound of the refrigerant flow is heard from the indoor unit immediately after starting operation. Cause This is caused by the transient instability of the refrigerant flow and is normal. [5] Standard operation data PWFY-P100VM-E-BU Indoor DB/WB C 20/- Outdoor DB/WB C 7/6 Water flow rate 3 m /h 2.15 Comp discharge temp. C 92.0 Water inlet C 65.0 Water outlet C 70.0 Frequency Hz High pressure kg/cm Tc C 100 2 22.5 74.4 2 Low pressure kg/cm Te C 34.4 LEV1 pulse 680 LEV2 pulse 380 7.8 PWFY-P100VM-E/E1/E2-AU Heating PWFY-P200VM-E/E1/E2-AU Cooling Cooling Indoor DB/WB C 20/- 20/- Indoor DB/WB C Heating 20/- Outdoor DB/WB C 7/6 35/24 Outdoor DB/WB C 7/6 35/24 Water flow rate 3 m /h 2.15 1.93 Water flow rate m3/ h 4.3 3.86 Water inlet C 30.0 23.0 Water inlet C 30.0 23.0 Water outlet C 35.0 18.0 Water outlet C 35.0 18.0 28.1 High pressure kg/cm 31 28.4 51.9 47 Tc C 50.5 47.5 6.5 7.1 Low pressure 6.7 7.4 High pressure kg/cm Tc C Low pressure 2 kg/cm 2 31.5 2 kg/cm 2 20/- Te C -1.5 0 Te C -1.2 1.5 LEV1 pulse 474 220 LEV1 pulse 480 220 - 43 - ª Troubleshooting [1] Check Code List BU: PWFY-P100VM-E-BU AU: PWFY-P100, 200VM-E/E1/E2-AU 1. Error Code and Preliminary Error Code List Error Code Preliminary error code Error (preliminary) detail code 0403 4300 - Serial communication error O 1102 1202 - Discharge temperature fault O 1301 1401 - Low pressure fault O 1302 - - High pressure fault 1 O 1302 1402 - High pressure fault 2 O 2000 2100 - Pump interlock error O 2000 2100 - Flow switch error 2134 2234 - Abnormal water temperature O O 2135 2235 - Water-source heat exchanger freezing O O 4102 4152 - Open phase O 4115 4165 - Power supply signal sync error O [01] Bus voltage error (PAM damage) O [108] Abnormal bus voltage drop O [109] Abnormal bus voltage rise O [121] Converter Fo error O Heatsink overheat protection O 4220 (Note) 4320 (Note) Searched unit Error code definition Notes BU AU O 4230 4330 - 4250 (Note) 4350 (Note) [101] IPM error O [102] ACCT overcurrent (H/W detection) O 5102 1210 - Temperature sensor fault (TH22) O O 5103 1209 - Temperature sensor fault (TH23,TH13) O O 5104 1202 - Temperature sensor fault (TH11) O 5106 2237 - Temperature sensor fault (TH6) O O 5108 2238 - Temperature sensor fault (TH8) O O 5110 1214 - Temperature sensor fault (THHS) O 5201 1402 - High-pressure sensor fault O 5202 1401 - Low-pressure sensor fault O - ACCT sensor Shor circuit/open circuit O 5301 4300 ACCT sensor fault O [115] - 44 - [2] Responding to Error Display on the Remote Controller 1. Error Code 0403 Serial communication error 2. Error definition and error detection method Serial communication error between the control board and the INV board on the compressor, and between the control board and the Fan board Detail code 01: Between the control board and the INV board Detail code 05: Between the control board and the Fan board 3. Cause, check method and remedy (1) Faulty wiring Check the following wiring connections. 1) Between Control board and INV board Control board INV board CN2 CN2 CN4 CN4 (2) INV board failure and Control board failure Replace the INV board or control board when the power turns on automatically, even if the power source is reset. Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the inverter.(page 70) - 45 - 1. Error Code 1102 Abnormal discharge air temperature 2. Error definition and error detection method 1) If a discharge temperature of 115 C [239 F] or higher is detected (first detection), units will stop, go into the 3-minute restart delay mode, and automatically restart after three minutes. 2) If a discharge temperature of 115 C [239 F ] or higher is detected again (second detection) within 30 minutes of the first stoppage of the units as described above, units will stop, go into the 3 minute restart delay mode, and automatically restart after three minutes. 3) If a discharge temperature of 115 C [239 F ] or higher is detected again (third detection) within 30 minutes of the second stoppage of the units as described above, the units will come to an abnormal stop, and the error code "1102" will appear. 4) If a discharge temperature of 115 C [239 F ] or higher is detected after 30 minutes have elapsed after a stoppage (first or second) of the unit as described above, it is regarded as the first detection and the sequence as described above will be followed. 5) The period of 30 minutes after a stoppage of the units is considered a preliminary error, and a preliminary error code will appear on the LED. 3. Cause, check method and remedy Cause Check method and remedy (1) Gas leak, gas shortage Refer to the page on refrigerant amount evaluation.(page 42) (2) Overload operation Check the operating conditions and operational status. (3) LEV actuation failure Refer to the section on troubleshooting the LEV.(page 64) (4) Thermistor failure (TH11) Check the thermistor resistor.(page 55) (5) Input circuit failure on the controller board thermistor Check the inlet air temperature on the LED monitor. (6) Shortage of circulating water Check that the pump meets the required specifications. 0.6m3/h~2.15m3/h (7) Clogged heat vent outlet Check that the heat vent outlet (located on the left side of the unit) is not clogged. 1. Error Code 1301 Abnormal low pressure 2. Error definition and error detection method When starting the compressor from Stop Mode for the first time if low pressure reads 0.098MPa [14psi] immediately before start-up, the operation immediately stops. 3. Cause, check method and remedy Cause (1) Inner pressure drop due to a leakage (2) Low pressure sensor failure (3) Short-circuited pressure sensor cable due to torn outer rubber (4) A pin on the male connector is missing. (5) Disconnected wire (6) Failure of the low pressure input circuit on the controller board (7) Shortage of circulating water Check method and remedy Refer to the section on troubleshooting the low pressure sensor.(page 62) Check that the pump meets the required specifications. 0.6m3/h~2.15m3/h - 46 - 1. Error Code 1302 Abnormal high pressure 1 2. Error definition and error detection method 1) If a pressure of 3.23MPa [468 psi ] or higher is detected during operation, units will stop, go into the 3 minute restart delay mode, and automatically restart after three minutes. 2) If a pressure of 3.23MPa [468 psi ] or higher is detected again (second detection) within 30 minutes of the first stoppage of the units, units will stop, go into the 3 minute restart delay mode, and automatically restart after three minutes. 3) If a pressure of 3.23 MPa [468 psi ] or higher is detected again (third detection) within 30 minutes of the second stoppage of the units, the unit will come to an abnormal stop, and the check code "1302" will appear on the display. 4) If a pressure of 3.23MPa [468 psi ] or higher is detected after 30 minutes have elapsed after a stoppage of the units, it is regarded as the first detection, and the sequence as described in section 1) above is followed. 5) Preliminary error code will remain on the LED for 30 minutes after the stoppage of the uinit. 6) The outdoor unit makes an error stop immediately when not only the pressure sensor but also the pressure switch detects 3.60+0,-0.15 MPa [522+0,-22 psi] 3. Cause, check method and remedy Cause Check method and remedy (1) LEV actuation failure Refer to the section on troubleshooting the LEV.(page 64) (2) Pressure sensor failure Refer to the page on the troubleshooting of the high pressure sensor. (page 61) (3) Failure of the thermistor input circuit and pressure sensor input circuit on the controller board Check the temperature and the pressure of the sensor with LED monitor. (4) Disconnected male connector on the pressure switch (63HS) or disconnected wire Check the temperature and the pressure of the sensor with LED monitor. (5) Shortage of circulating water Check that the pump meets the required specifications. 0.6m3/h~2.15m3/h 1. Error Code 1302 Abnormal high pressure 2 (outdoor unit) 2. Error definition and error detection method If the pressure of 0.098MPa [14psi] or lower is registered on the pressure sensor immediately before start-up, it will trigger an abnormal stop, and error code "1302" will be displayed. 3. Cause, check method and remedy Cause Check method and remedy (1) Inner pressure drop due to a leakage. Refer to the page on the troubleshooting of the high pressure sensor.(page 61) (2) Pressure sensor failure (3) Shorted-circuited pressure sensor cable due to torn outer rubber (4) A pin on the male connector on the pressure sensor is missing or contact failure (5) Disconnected pressure sensor cable (6) Failure of the pressure sensor input circuit on the controller board - 47 - 1. Error Code 2000 Pump interlock error (BU only) 2. Error definition and error detection method Preliminary pump interlock error is detected when the pump interlock circuit becomes open while the units are stopped during Thermo-ON. When a preliminary error is detected, units will go into the Thermo-OFF state and into the restart-prevention mode. When the amount of time listed below has elapsed since the time when a given preliminary error was detected, an error code "2000" will be detected, and the units will come to an abnormal stop. DipSW3-10=OFF 9 seconds *1 DipSW3-10=ON 9 minutes and 59 seconds *1 *1 When the version of the software is before 1.24, this value will be 9 minutes and 59 seconds regardless of the DipSW settings. 3. Cause, check method and remedy Cause (1) Pump is not connected properly. Check method and remedy Check the pump for proper connection. Check the pump interlock circuit. 1. Error Code 2000 Flow switch error (AU only) 2. Error definition and error detection method When the water flow rate of the water supply to the unit is the specified rate or less, the flow switch does not detect, and the unit will be stopped. 3. Cause, check method and remedy Cause (1) Water shortage Check method and remedy Check the water flow rate. Check the strainer for proper operation. 1. Error Code 2134 Abnormal water temperature 2. Error definition and error detection method In the case of BU and WH, if the value of TH6 becomes equal to or greater than 85°C, units will stop and go into the 3 minute restart delay mode. For a period of thirty minutes after units came to a stop is considered a preliminary error. 3. Cause, check method and remedy Cause Check method and remedy Check the pump for proper connection. (1) Pump is not connected properly. (2) Thermistor fault Replace thermistor TH6. (3) Disconnected thermistor connector Check the thermistor connector. - 48 - 1. Error Code 2135 Water heat exchanger freeze up 2. Error definition and error detection method Condition 1 Condition 2 Condition 3 Condition 4 Condition 5 Both TH22 and TH23 of 1˚C or below have been detected for three minutes in a mode other than Heating Thermo-ON. If PWFY is running in Heating Thermo-ON mode TH22 of -15˚C or below has been detected for 3 continuous minutes when the defrost cycle starts starting from 2 minutes after the start of the defrost cycle. If PWFY is running in a mode other than Heating TH22 of -15˚C or below has been detected for 3 continuous minutes Thermo-ON mode when the defrost cycle starts starting from 4 minutes after the start of the defrost cycle. TH22 of -8˚C or below has been detected for 90 seconds except during the defrost cycle and while PWFY is running in modes other than Cooling Thermo-ON. TH6 or TH8 of 2˚C or below has been detected while the PWFY unit is in operation. The PWFY unit has a power failure while the outdoor unit is in the defrost cycle. For a period of 60 minutes after the units came to a stop is considered a preliminary error. 3. Cause, check method and remedy (1) (2) (3) Cause Pump is not connected properly. Shortage of circulating water Thermistor fault Disconnected thermistor connector Check method and remedy Check the pump for proper connection. Check the amount of circulating refrigerant. Replace thermistor TH6, TH8. Check the thermistor connector. 1. Error Code 4102 Open phase 2. Error definition and error detection method An open phase of the power supply (L phase, N phase) was detected at power on. The N phase current is outside of the specified range. The open phase of the power supply may not always be detected if a power voltage from another circuit is applied. 3. Cause, check method and remedy Cause Check method and remedy Check the input voltage to the power supply terminal block TB2. (1) Power supply problem Open phase voltage of the power supply Power supply voltage drop (2) Noise filter problem Coils (L1 to L3) problem Circuit board failure (3) Wiring failure Confirm that the voltage at the control board connector CNAC is 198 V or above. If the voltage is below 180V, check the wiring between CNAC2 on the noise filter board and CNAC on the control board. Check the wiring between the power supply terminal block (TB2) and the tab terminals LI and NI on the noise filter board. Check the wiring between the tab terminals LO and NO on the noise filter board and the ACL. Check the wiring between the ACL and the tab terminals R and S on the INV board. Check the wiring between CN5 on the noise filter board and CN5 on the INV board. (4) Blown fuse (5) INV board failure Check for a blown fuse (F01) on the control board. →If a blown fuse is found, check for a short-circuiting or earth fault of the actuator. Replace the inverter if this problem is detected after the compressor has gone into operation. (6) Control board failure Check the coil connections. Check for coil burnout. Check that the voltage at CNAC2 connector is 198V or above. Replace the control board if none of the above is causing the problem. - 49 - 1. Error Code 4115 Power supply signal sync error 2. Error definition and error detection method The frequency cannot be determined when the power is switched on. 3. Cause, check method and remedy Cause Check method and remedy (1) Power supply error Check the voltage of the power supply terminal block (TB2). (2) Noise filter problem Coils (L1 to L3) problem Circuit board failure (3) Faulty wiring Check fuse F01 on the control board. (4) Wiring fault Between CNAC2 on the noise filter board and CNAC on the control board Confirm that the voltage at the control board connector CNAC is 198 V or above. Check the wiring between the power supply terminal block (TB2) and the tab terminals LI and NI on the noise filter board. (5) Control board failure If none of the items described above is applicable, and if the trouble reappears even after the power is switched on again, replace the control board. Check the coil connections. Check for coil burnout. Confirm that the voltage at the CNAC2 connector is 198 V or above. - 50 - 1. Error Code 4220 Abnormal bus voltage drop (Detail code 108) 2. Error definition and error detection method If Vdc 200V or less is detected during Inverter operation. (S/W detection) 3. Cause, check method and remedy (1) Power supply environment. Check whether the unit makes an instantaneous stop when the detection result is abnormal or a power failure occurs. Check that the interphase power supply voltage is 198V or above. (2) Voltage drop detected. If the bus voltage that appears on the LED monitor is 200V or below during inverter operation, check the following. 1) Replace the control board if the voltage across pins 1-3 of CN631 on the control board is 200V or above during inverter operation. 2) Checking the wiring connections 1 Check the wiring between the INV board and CN631 on the control board. 2 Check the wiring between the ACL and the tab terminals R and S on the INV board. 3 Check the wiring between the tab terminals LO and NO on the noise filter board and the ACL. 4 Check the wiring between the power supply terminal block (TB2) and the tab terminals LI and NI on the noise filter board. 3) Noise filter board fault 1 Check for broken coils (L1-L3). 2 Check the RS value → 20Ω ± 5%. 4) Replace the INV board if no problems are found with the above items. Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the inverter.(page 70) 1. Error Code 4220 Bus voltage error (PAM damage) (Detail code 01) 2. Error definition and error detection method PWM circuit error on the INV board is detected. 3. Cause, check method and remedy (1) INV board failure Replace the INV board. Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the inverter.(page 70) - 51 - 1. Error Code 4220 Abnormal bus voltage rise (Detail code 109) 2. Error definition and error detection method If Vdc 380V is detected during inverter operation. 3. Cause, check method and remedy (1) Different voltage connection. Check the power supply voltage on the power supply terminal block (TB2). (2) INV board failure. Replace the INV board if no problems are found with the power supply. Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the inverter.(page 70) 1. Error Code 4220 Converter Fo error (Detail code 121) 2. Error definition and error detection method INV board converter circuit error is detected. 3. Cause, check method and remedy (1) INV board failure Replace the INV board. Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the inverter.(page 70) - 52 - 1. Error Code 4230 Heat sink overheat protection 2. Error definition and error detection method When the heat sink temperature (THHS) remains at or above 85˚C is detected. 3. Cause, check method and remedy Cause Check method and remedy (1) Checking the fan wiring. Check connectors CN506A and CN506B on the control board. Check the fan wiring for breakage and damage. (2) Checking the control board output voltage Check the output voltage at CN506A and CN506B on the control board during inverter operation. Criteria : Output voltage 22V Replace the control board if no voltage is output during inverter operation. Replace the fan if voltage is output from the control board but the fan does not operate. (3) Checking the air passage for blockage Check the heatsink cooling air passage for blockage. (4) THHS fault 1) Check INV board IGBT for proper connection. Check that heatsink on IGBT is installed properly. 2) Check the THHS wiring for damage. Replace the THHS sensor if problems are found. 3) Check the THHS sensor value on the LED monitor. Replace the THHS sensor if the values are abnormal. Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the inverter.(page 70) - 53 - 1. Error Code 4250 IPM error (Detail code 101) 2. Error definition and error detection method Overcurrent is detected while power module error detection signal is output. 3. Cause, check method and remedy Cause Check method and remedy (1) Check the inverter output wiring for proper connection. Check the fan wiring for breakage and damage. Check that the wiring is connected with correct polarity. (2) Compressor failure Check the compressor for earth fault and short circuit. Replace the INV board if no problems are found with the above items. Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the inverter.(page 70) 1. Error Code 4250 ACCT overcurrent (H/W detection) (Detail code 102) 2. Error definition and error detection method Overcurrent 34.5Apeak or 16Arm and above is detected 3. Cause, check method and remedy Cause Check method and remedy (1) Check the inverter output wiring for proper connection. Check the fan wiring for breakage and damage. Check that the wiring is connected with correct polarity. (2) Compressor failure Check the compressor for earth fault and short circuit. Replace the INV board if no problems are found with the above items. Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the inverter.(page 70) - 54 - 1. Error Code 5102 TH22 temperature sensor failure (BU, AU ) 5103 TH13, TH23 temperature sensor failure (BU, AU) 5104 TH11 temperature sensor failure (BU) 5106 TH6 temperature sensor failure (BU, AU ) 5108 TH8 temperature sensor failure (BU, AU ) 2. Error definition and error detection method When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor. When a short or an open is detected again (the second detection) after the first restart of the outdoor unit, the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected temperature is within the normal range. When a short or an open is detected again (the third detection) after the previous restart of the outdoor unit, the outdoor unit makes an error stop. When a short or an open of the thermistor is detected just before the restart of the outdoor unit, the outdoor unit makes an error stop, and the error code "5102", "5103", 5104", "5105", "5106"or "5108" will appear. During 3-minute antirestart mode, preliminary errors will be displayed on the LED display. A short or an open described above is not detected for 10 minutes after the compressor start, during defrost mode, or for 3 minutes after defrost mode. 3. Cause, check method and remedy Cause Check method and remedy (1) Thermistor failure Check thermistor resistance. (2) Pinched lead wire Check for pinched lead wire. (3) Torn wire coating Check for wire coating. (4) A pin on the male connector is missing or contact failure Check connector. (5) Disconnected wire Check for wire. (6) Thermistor input circuit failure on the control 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. <Reference> TH22 TH13,TH23 TH11 TH6 TH8 Short detection 70 C [158 F ] and above (0.4 k ) 110 C [230 F ] and above (0.4 k ) 240 C [464 F ] and above (0.57 k ) 70 C [158 F ] and above (0.4 k ) 70 C [158 F ] and above (1.14 k ) -40 -40 0 -40 -40 - 55 - Open detection C [ -40 F ] and below (130 k C [ -40 F ] and below (130 k C [ 32 F ] and below (698 k C [ -40 F ] and below (130 k C [ -40 F ] and below (130 k ) ) ) ) ) 1. Error Code 5110 Heat sink failure 2. Error definition and error detection method When a short or an open of THHS is detected just before or during the inverter operation. 3. Cause, check method and remedy Cause (1) Check method and remedy INV board failure If the problem recurs when the unit is put into operation, replace the INV board. Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the inverter.(page 70) 1. Error Code 5201 High pressure sensor failure (63HS) 2. Error definition and error detection method If the high pressure sensor detects 0.098MPa [14psi] or less during the operation, the outdoor unit stops once, turns to antirestart mode for 3 minutes, and restarts after 3 minutes when the detected high pressure sensor is 0.098MPa [14psi] or more. If the high pressure sensor detects 0.098MPa [14psi] or less just before the restart, the outdoor unit makes an error stop, and the error code "5201" will appear. During 3-minute antirestart mode, preliminary errors will be displayed on the LED display. A error is not detected for 3 minutes after the compressor start, during defrost operation, or 3 minutes after defrost operation. 3. Cause, check method and remedy Cause Check method and remedy (1) High pressure sensor failure Refer to the page on the troubleshooting of the high pressure sensor. (9 [3] -1-(page 61)) (2) Pressure drop due to refrigerant leak (3) Torn wire coating (4) A pin on the male connector is missing or contact failure (5) Disconnected wire (6) High pressure sensor input circuit failure on the control board - 56 - 1. Error Code 5202 Low-pressure sensor fault 2. Error definition and error detection method When a pressure sensor reading of 4.06 MPa [589 psi] or above is detected, error code "5202" will appear. The unit will continue its operation by using other sensors as a backup. 3. Cause, check method and remedy Cause Check method and remedy (1) Low pressure sensor failure Refer to the page on the troubleshooting of the high pressure sensor. (9 [3] -1-(page 61)) (2) Pressure drop due to refrigerant leak (3) Torn wire coating (4) A pin on the male connector is missing or contact failure (5) Disconnected wire (6) Low pressure sensor input circuit failure on the control board 1. Error Code 5301 ACCT sensor short circuit/open circuit 2. Error definition and error detection method Abnormal value is detected by the ACCT sensor detection circuit immediately before inverter startup. 3. Cause, check method and remedy Cause Check method and remedy (1) INV board failure Replace the INV board if compressor failure (see below) is ruled out. (2) Compressor failure Check the compressor for earth fault and short circuit. 1. Error Code 5301 ACCT sensor fault (Detail code 115) 2. Error definition and error detection method When the formula "output current < 1.5 Arms" remains satisfied for 10 seconds while the inverter is in operation. 3. Cause, check method and remedy Cause Check method and remedy (1) Inverter open output phase Check the output wiring connections. (2) Compressor failure Check the compressor for earth fault and short circuit. (3) INV board failure If no problems are found with the above items, replace the INV board. - 57 - -1- Troubleshooting according to the remote controller malfunction or the external input error 1. Phenomena Even if the operation button on the remote controller is pressed, the display remains unlit and the unit does not start running.(Power indicator does not appear on the screen.) 2. Cause 1) Power is not supplied to the unit. The main power to the unit is not turned on. Connectors on the circuit board are disconnected. The fuse on the circuit board is blown. Transformer fault or broken wiring 2) Incorrect wiring for the MA remote controller Disconnected wire for the MA remote controller or disconnected line to the terminal block. Short-circuited MA remote controller wiring Incorrect wiring of the MA remote controller cables Incorrect connection of the MA remote wiring to the terminal block for transmission line (TB5) on the indoor unit Wiring mixup between the MA remote controller cable and 200 VAC power supply cable 3) 4) 5) 6) 7) The number of the MA remote controllers that are connected to an indoor unit exceeds the allowable range (2 units). The length or the diameter of the wire for the MA remote controller are out of specification. Short circuit of the wire for the remote display output of the outdoor unit or reversed polarity connection of the relay. Circuit board fault MA remote controller failure 3. Check method and remedy 1) Measure voltages of the MA remote controller terminal (among 1 to 3). If the voltage is between DC 9 and 12V, the remote controller is a failure. If no voltage is applied, check the causes 1) and 3) and if the cause is found, correct it. If no cause is found, refer to 2). 2) Remove the wire for the remote controller from the terminal block (TB15) on the MA remote controller for the indoor unit, and check voltage among 1 to 3. If the voltage is between DC 9 and 12 V, check the causes 2) and 4) and if the cause is found, correct it. If no voltage is applied, check the cause 1) and if the cause is found, correct it. If no cause is found, check the wire for the remote display output (relay polarity). If no further cause is found, replace the indoor unit board. - 58 - 1. Phenomena 2. Cause ! " # $ % & '()* " '()* ) +% , - % '+, & ( 3. Check method and remedy When 2) and 3) above apply, check code 7102 will be displayed on the self-diagnosis LED. 0 / 2 && % '+, . (% 1# " 3* 0 / . (% ) (% ! / 3 !*40 . (% , (% ( . 0 / ( $ & ( - 59 - 1. Phenomena "HO" or "PLEASE WAIT" display on the remote controller does not disappear, and no operation is performed even if the button is pressed. ("HO" or "PLEASE WAIT" display will normally turn off 5 minutes later after the power on.) 2. 1) 2) 3) Cause The power for the M-NET transmission line is not supplied from the outdoor unit. Short-circuited transmission line Incorrect wiring of the M-NET transmission line on the outdoor unit. Disconnected wire for the MA remote controller or disconnected line to the terminal block. The male power supply connectors on the multiple outdoor units are connected to the female power supply switch connector (CN40). In the system to which the power supply unit for transmission lines is connected, the male power supply connector is connected to the female power supply switch connector (CN40) on the outdoor unit 4) Broken M-NET transmission line on the unit side 5) Faulty wiring or loose connector between the terminal block for M-NET transmission line connection (TB5) on the unit and CM2M on the indoor unit circuit board 6) Incorrect wiring for the MA remote controller Short-circuited wire for the MA remote controller Disconnected wire for the MA remote controller (No.2) and disconnected line to the terminal block. Reversed daisy-chain connection between groups Incorrect wiring for the MA remote controller to the terminal block for transmission line connection (TB5) on the indoor unit The M-NET transmission line is connected incorrectly to the terminal block (TB13) for the MA remote controller. 7) The sub/main setting of the MA remote controller is set to sub. 8) 2 or more main MA remote controllers are connected. 9) Circuit board fault (MA remote controller communication circuit) 10) Remote controller failure 11) Outdoor unit failure 3. Check method and remedy 1) When 2) and 3) above apply, check code 7102 will be displayed on the self-diagnosis LED. Same symptom for all units in a system with one outdoor unit? NO Measure the voltages at the terminal block for transmission line connection (TB5) on the unit. YES Check the self-diagnosis LED Check 4. Is the error code 7102 displayed? YES NO Check 2 and 3. YES Check for 5 and 6. NO YES Error found? 17 - 30V? YES Correct the error. Replace the M-NET remote controller with the MA remote controller Error found? NO Circuit board fault or MA remote controller error NO Check (1). Correct the error. - 60 - [3] T roubleshooting Principal Parts -1- High-Pressure Sensor (63HS) 1. Compare the pressure that is detected by the high pressure sensor, and the high-pressure gauge pressure to check for failure. By configuring the digital display setting switch (SW1) as shown in the figure below, the pressure as measured by the high-pressure sensor appears on the LED1 on the control board. SW1 1 2 3 4 5 6 7 8 9 10 ON (1) While the sensor is stopped, compare the gauge pressure and the pressure displayed on self-diagnosis LED1. 1) When the gauge pressure is between 0 and 0.098MPa [14psi], internal pressure is caused due to gas leak. 2) When the pressure displayed on self-diagnosis LED1 is between 0 and 0.098MPa [14psi], the connector may be defective or be disconnected. Check the connector and go to (4). 3) When the pressure displayed on self-diagnosis LED1 exceeds 3.60MPa [522psi], go to (3). 4) If other than 1), 2) or 3), compare the pressures while the sensor is running. Go to (2). (2) Compare the gauge pressure and the pressure displayed on self-diagnosis LED1 while the sensor is running. (Com-pare them by MPa [psi] unit.) 1) When the difference between both pressures is within 0.098MPa [14psi], both the high pressure sensor and the control board are normal. 2) When the difference between both pressures exceeds 0.098MPa [14psi], the high pressure sensor has a problem. (performance deterioration) 3) When the pressure displayed on self-diagnosis LED1 does not change, the high pressure sensor has a problem. (3) Remove the high pressure sensor from the control board to check the pressure on the self-diagnosis LED1. 1) When the pressure displayed on self-diagnosis LED1 is between 0 and 0.098MPa [14psi], the high pressure sensor has a problem. 2) When the pressure displayed on self-diagnosis LED1 is approximately 3.60MPa [522psi], the control board has a problem. (4) Remove the high pressure sensor from the control board, and short-circuit between the No.2 and 3 connectors (63HS) to check the pressure with self-diagnosis LED1. 1) When the pressure displayed on the self-diagnosis LED1 exceeds 3.60MPa [522psi], the high pressure sensor has a problem. 2) If other than 1), the control board has a problem. 2. Pressure sensor configuration The high pressure sensor consists of the circuit shown in the figure below. If DC 5V is applied between the red and the black wires, voltage corresponding to the pressure between the white and the black wires will be output, and the value of this voltage will be converted by the microcomputer. The output voltage is 0.1028V per 0.098MPa [14psi]. The pressure sensor on the body side is designed to connect to the connector. The connector pin number on the body side is different from that on the control board side. Body side Control board side Vcc Pin 1 Pin 3 Vout Pin 2 Pin 2 GND Pin 3 Pin 1 63HS 123 Pressure 0 ~ 3.60 MPa [522psi] Vout 0.5 ~ 3.5 V 0.1028 V / 0.098 MPa [14 psi] 2 3 3.0 [435] Pressure (MPa [psi]) Connector 1 3.5 [508] GND (Black) Vout (White) 2.5 [363] 2.0 [290] 1.5 [218] 1.0 [145] 0.5 [73] Vcc (DC 5 V)(Red) 0 0 0.5 1 1.5 2 2.5 Output voltage (V) - 61 - 3 3.5 -2- Low-Pressure Sensor (63LS) 1. Compare the pressure that is detected by the low pressure sensor, and the low pressure gauge pressure to check for failure. By configuring the digital display setting switch (SW1) as shown in the figure below, the pressure as measured by the low-pressure sensor appears on the LED1 on the control board. SW1 1 2 3 4 5 6 7 8 9 10 ON (1) While the sensor is stopped, compare the gauge pressure and the pressure displayed on self-diagnosis LED1. 1) When the gauge pressure is between 0 and 0.098MPa [14psi], internal pressure is caused due to gas leak. 2) When the pressure displayed on self-diagnosis LED1 is between 0 and 0.098MPa [14psi], the connector may be defective or be disconnected. Check the connector and go to (4). 3) When the pressure displayed on self-diagnosis LED1 exceeds 1.7MPa [247psi], go to (3). 4) If other than 1), 2) or 3), compare the pressures while the sensor is running. Go to (2). (2) Compare the gauge pressure and the pressure displayed on self-diagnosis LED1 while the sensor is running. (Compare them by MPa [psi] unit.) 1) When the difference between both pressures is within 0.03MPa [4psi], both the low pressure sensor and the control board are . normal 2) When the difference between both pressures exceeds 0.03MPa [4psi], the low pressure sensor has a problem. (performance deterioration) 3) When the pressure displayed on the self-diagnosis LED1 does not change, the low pressure sensor has a problem. (3) Remove the low pressure sensor from the control board to check the pressure with the self-diagnosis LED1 display. 1) When the pressure displayed on the self-diagnosis LED1 is between 0 and 0.098MPa [14psi], the low pressure sensor has a problem. 2) When the pressure displayed on self-diagnosis LED1 is approximately 1.7MPa [247psi], the control board has a problem. When the outdoor temperature is 30 C [86 F] or less, the control board has a problem. When the outdoor temperature exceeds 30 C [86 F], go to (5). (4) Remove the low pressure sensor from the control board, and short-circuit between the No.2 and 3 connectors (63LS:CN63LS) to check the pressure with the self-diagnosis LED1. 1) When the pressure displayed on the self-diagnosis LED1 exceeds 1.7MPa [247psi], the low pressure sensor has a problem. 2) If other than 1), the control board has a problem. (5) Remove the high pressure sensor (63HS) from the control board, and insert it into the connector for the low pressure sensor (63LS) to check the pressure with the self-diagnosis LED1. 1) When the pressure displayed on the self-diagnosis LED1 exceeds 1.7MPa [247psi], the control board has a problem. 2) If other than 1), the control board has a problem. 2. Low-pressure configuration The low pressure sensor consists of the circuit shown in the figure below. If DC5V is applied between the red and the black wires, voltage corresponding to the pressure between the white and the black wires will be output, and the value of this voltage will be converted by the microcomputer. The output voltage is 0.173V per 0.098MPa [14psi]. The pressure sensor on the body side is designed to connect to the connector. The connector pin number on the body side is different from that on the control board side. Body side Control board side Vcc Pin 1 Pin 3 Vout Pin 2 Pin 2 GND Pin 3 Pin 1 1.8 [261] Pressure 0 ~ 1.7 MPa [247psi] Vout 0.5 ~ 3.5 V 0.173 V / 0.098 MPa [14 psi] Pressure (MPa [psi]) 1.6 [232] 63LS 123 1.4 [203] 1.2 [174] 1.0 [145] 0.8 [116] Connector 0.6 [87] 1 2 3 0.4 [58] GND (Black) 0.2 [29] Vout (White) 0 Vcc (DC 5 V)(Red) 0 0.5 1 1.5 2 2.5 Output voltage (V) - 62 - 3 3.5 -3- Solenoid Valve Check whether the output signal from the control board and the operation of the solenoid valve 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. LEDs light up when relays are ON. The circuits on some parts are closed when the relays are ON. Refer to the following instructions. Display SW1 LD1 Upper LD2 LD3 LD4 LD5 LD6 LD7 LD8 SV1 SW1 1 2 3 4 5 6 7 8 9 10 ON Lower When there is a problem with a solenoid valve, first check for loose solenoid valve coil, broken lead wire, incorrect connecter connections on the circuit board, and broken wire at the connectors. (1) In case of SV1 (Bypass valve) This solenoid valve opens when powered (Relay ON). 1) This valve turns on during defrost, and its operation can be verified on the LED or by the operation sound it makes when it closes. 2) The open or closed status of the valve can be verified by measuring the temperature of the pipe at the downstream of SV1. When the valve is closed, pipes will be hot. Do not touch the pipe to check its temperature. - 63 - -4- LEV1W(a,b) LEV1W(a,b) operation LEV1W(a,b) are stepping-motor-driven valves that operate by receiving the pulse signals from the indoor and outdoor unit control boards. (1) LEV The valve opening changes according to the number of pulses. 1) Indoor and outdoor unit control boards and the LEV (Indoor unit: Linear expansion valve) Outdoor control board Intermediate connector LEV 4 M 6 5 2 3 1 Blue DC12V 2 Brown 6 5 Red 5 Drive circuit Brown 4 1 Blue 4 4 Yellow 3 3 Orange 3 3 2 4 Yellow 2 2 1 6 White 1 1 White Red Orange Note. The connector numbers on the intermediate connector and the connector on the control board di ffer. Check the color of the lead wire to judge the number. 2) Pulse signal output and valve operation Output (phase) number Output state 1 1 ON 2 OFF 3 OFF 4 ON 2 3 ON OFF ON ON OFF ON OFF 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 will be off. *2. When the output is open phase or remains ON, the motor cannot run smoothly, and rattles and vibrates. 3) LEV valve closing and opening operation Valve opening (refrigerant flow rate) D C *When the power is turned on, the valve closing signal of 2200 pulses will be output from the indoor board to LEV to fix the valve position. It must be fixed at point A . When the valve operates smoothly, no sound from LEV or no vibration occurs, however, when the pulses change from E to A in the chart or the valve is locked, a big sound occurs. *Whether a sound is generated or not can be determined by holding a screwdriver against it, then placing your ear against the handle. Valve closed Valve open A Fully open: 1400 pulses E B Pulses 80 - 100 pulses - 64 - (2) Judgment methods and possible failure mode Malfunction mode Microcomputer driver circuit failure Judgment method Remedy Disconnect the control board connector and connect the check LED as shown in the figure below. 6 Target LEV When the drive circuit has a problem, replace the control board. BU AU 5 4 3 2 1k LED 1 resistance : 0.25W 1k LED : DC15V 20mA or more When the main power is turned on, the indoor unit circuit board outputs pulse signals to the indoor unit LEV for 10 seconds, and the outdoor unit circuit board outputs pulse signals to the outdoor unit LEV for 17 seconds. If any of the LED remains lit or unlit, the drive circuit is faulty. LEV mechanism is locked If the LEV is locked, the drive motor runs idle, and makes a small clicking sound. When the valve makes a closing and opening sound, the valve has a problem. Replace the LEV. BU AU Disconnected or short-circuited LEV motor coil Measure resistance between the coils (red - white, red -orange, brown - yellow, brown - blue) using a tester. They are normal if resistance is 150ohm 10%. Replace the LEV coils. BU AU Measure resistance between the coils (red - white, red -orange, brown - yellow, brown - blue) using a tester. They are normal if resistance is 46ohm 3%. Replace the LEV coils. BU AU Incomple sealing To check the LEV for leakage, stop the unit in question, If there is a large amount of (leak from the and operate the other units in the cooling mode. Next, leakage, replace the LEV. valve) check the temperature of the unit liquid pipe (TH22) on the service LED. When the unit is stopped, the LEV is fully closed, so unless there is a leak, the pipe temperature will not go down. If the liquid pipe temperature is considerably lower than the water temperature reading on the remote controller, it indicates a valve closure failure. (The LEV is not sealed properly.) If the amount of leakage is insignificant and does not have negative effects, the valve does not need to be replaced. AU Thermistor (liquid piping temperature detection) Linear Expansion Valve Faulty wire connections in the connector or faulty contact 1. Check for loose pins 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. - 65 - Check the continuity at the points where an error occurs. BU AU (3) LEV coil removal procedure Motor Driver Locknut Bellows Valve assembling Refrigerant Circuit Valve body side Orifice Notes on the procedure 1) Do not put undue pressure on the motor. 2) Do not use motors if dropped. 3) Do not remove the cap until immediately before the procedure. 4) Do not wipe off any molybdenum. 5) Do not remove the packing. 6) Do not apply any other than specified liquid such as screw lock agent, grease and etc. Molybdenum Motor Packing Cap - 66 - Replacement procedure 1) Stop all the indoor and outdoor units. Check that all the units are stopped, and turn off the power to the outdoor unit. 2) Prepare two spanners. Hold the valve body with one spanner and loosen the locknut with another one. Turning the locknut counter-clockwise from motor side view can loosen it. Two spanners must be used. Do not hold the motor with one hand and loosen the locknut with only one spanner. 3) Turning the locknut several times. The locknut will come off and then the motor can be removed. 4) Prepare a motor replacement. Use only factory settings, which the head part of the driver does not come out.Use of other than factory settings may result in malfunction and failure of valve flow rate control. 5) Keep dust, contaminants, and water out of the space between the motor and the valve body during replacement. (The space is the mechanical section of the valve.) Do not damage the junction with tools. After removing the motor, blow N2 gas or etc. into bellows in order to blow off water from inside. 6) Remove the cap of the motor replacement. Joint the axis of the motor and the one of the valve body with the locknut to stick precisely. Apply screw lock agent to whole part of the screw. Do not introduce screw lock agent into the motor. Use new motors if problems are found on the motor during the replacement. 7) After rotating the locknut 2~3 times by hands, hold the valve body with the spanner, and tighten the locknut with the specified torque with a torque wrench. Apply the tightening torque of 15N m (150kgf cm) (administration value 15 1 N m (150 10kgf cm)). Note that undue tightening may cause breaking a flare nut. 8) When tightening the locknut, hold the motor with hands so that undue rotary torque and load can not be applied. 9) The differences of relative position after assembling the motor and the valve body do not affect the valve control and the switching function. Do not relocate the motor and the valve body after tightening the locknut. Even the relative position is different from before and after assembling. Difference in rotational direction is acceptable. The motor may not be fixed with clamp because of the changing of the motor configuration. However, the fixing is not necessary due to the pipe fixing. 10) Connect the connector. Do not pull hard on the lead wire. Make sure that the connector is securely inserted into the specified position, and check that the connector does not come off easily. 11) Turn on the indoor unit, and operate the air conditioner. Check that no problems are found. - 67 - (4) LEV2W The valve opening changes according to the number of pulses. 1) Connections between the control board and LEV2W Outdoor control board DC 12V LEV 4 1 M 6 5 2 3 6 Red 6 5 Brown 5 4 Blue 4 4 3 Orange 3 3 2 Yellow 2 2 1 White 1 1 Drive circuit 2) Pulse signal output and valve operation Output state Output (phase) number 1 2 3 4 5 6 7 Output pulses change in the following orders when the Valve is open; 1 2 3 4 5 6 7 8 Valve is closed; 8 7 6 5 4 3 2 1 8 1 ON OFF OFF OFF OFF OFF ON ON 2 ON ON ON OFF OFF OFF OFF OFF 3 OFF OFF ON ON ON OFF OFF OFF 4 OFF OFF OFF OFF ON ON ON OFF *1. When the LEV opening angle does not change, all the output phases will be off. *2. When the output is open phase or remains ON, the motor cannot run smoothly, and rattles and vibrates. 3) LEV valve closing and opening operation Valve opening (refrigerant flow rate) B *When the power is turned on, the valve closing signal of 520 pulses will be output from the indoor board to LEV to fix the valve position. It must be fixed at point A . (Pulse signal is output for approximately 17 seconds.) When the valve operates smoothly, there is no sound from the LEV and no vibration occurs, but when the valve is locked, noise is generated. *Whether a sound is generated or not can be determined by holding a screwdriver against it, then placing your ear against the handle. Valve closed 1 8 *If liquid refrigerant flows inside the LEV, the sound may become smaller. Valve open Fully open: 480 pulses A Pulses - 68 - (5) LEV (LEV2W) coil removal procedure 1) LEV component As shown in the figure, the outdoor LEV is made in such a way that the coils and the body can be separated. Body Coils Stopper Lead wire 2) 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 the coils are pulled out without the body gripped, undue force will be applied and the pipe will be bent. Part A 3) Installing the coils Fix 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, and insert the coil stopper securely in the pipe on the body. Hold the body when pulling out the coils to prevent so that the pipe will not be bent. If the coils are pushed without the body gripped, undue force will be applied and the pipe will be bent. Hold the body when pulling out the coils to prevent so that the pipe will not be bent. Part A - 69 - -5- Inverter Replace only the compressor if only the compressor is found to be defective. Replace the defective components if the inverter is found to be defective. If both the compressor and the inverter are found to be defective, replace the defective component(s) of both devices. (1) Inverter-related problems: Troubleshooting and remedies 1) The inverter board has a large-capacity electrolytic capacitor, in which residual voltage remains even after the main power is turned off, posing a risk of electric shock. Before inspecting the inside of the control box, turn off the power, leave the unit turned off for at least 10 minutes, and check that the voltage between the pins of CN631 has dropped to 20V or less. (It takes about 10 minutes to discharge electricity after the power supply is turn off.) 2) If cables are not inserted properly to the Faston terminals or connectors are not connected properly, inverter parts will be damaged. If a problem occurs after replacing some of the parts, mixed up wiring is often the cause of the problem. Check for proper connection of the wiring, screws, connectors, and Faston terminals. 3) To avoid damage to the circuit board, do not connect or disconnect the inverter-related connectors with the main power turned on. 4) Faston terminals have a locking function. Make sure the terminals are securely locked in place after insertion. Press the tab in the middle of the terminals to remove them. Squeeze down with your finger Plastic tab Cable 5) When replacing the INV (inverter) board, apply a thin layer of grease (supplied with the service parts) evenly to the radiation plate. Wipe off any grease that may get on the wiring terminal to avoid terminal contact failure. 6) Faulty wiring to the compressor damages the compressor. Connect the wiring in the correct phase sequence. - 70 - Error display/failure condition Measure/inspection item [1] Inverter related errors 4102, 4115, 4220, 4230, 4250, 5110, 5301, 0403 Check the details of the inverter error in the error log at 10 . [1 ] LED Monitor Display. Take appropriate measures to the error code and the error details in accordance with 9 . [1] Check Code List [2] Main power breaker trip Refer to "(3) Trouble treatment when the main power breaker is tripped".(page 73) [3] Main power earth leakage breaker trip Refer to "(4) Trouble treatment when the main power earth leakage breaker is tripped".(page 73) [4] Only the compressor does not operate. Check the inverter frequency on the LED monitor and proceed to (2) [4] if the compressor is in operation.(page 72) [5] The compressor vibrates violently at all times or makes an abnormal sound. See (2)-[4].(page 72) [6 ] Noise is picked up by the peripheral device <1> Check that power supply wiring of the peripheral device does not run close to the power supply wiring of the outdoor unit. <2> Check if the inverter output wiring is not running parallel to the power supply wiring and the transmission lines. <3> Check that the shielded wire is used as the transmission line when it is required, and check that the grounding work is performed properly on the shielded wire. <4> Meg failure for electrical system other than the inverter <5> Attach a ferrite core to the inverter output wiring. (Contact the factory for details of the service part settings.) <6> Provide separate power supply to the air conditioner and other electric appliances. <7> If the error occurred suddenly, a ground fault of the inverter output can be considered. See (2)-[4].(page 72) *Contact the factory for cases other than those listed above. [7 ] Sudden malfunction (as a result of external noise.) <1> Check that the grounding work is performed properly. <2>Check that the shielded wire is used as the transmission line when it is required, and check that the grounding work is performed properly on the shielded wire. <3>Check that neither the transmission line nor the external connection wiring does not run close to another power supply system or does not run through the same conduit pipe. * Contact the factory for cases other than those listed above. - 71 - (2) Inverter output related troubles Items to be checked (1) [1] Check the INV board error detection circuit. (2) Terminals on the inverter board Remove the inverter output cable from U, V, and W terminals. Operate the units. Phenomena Remedy 1) Overcurrent error (4250 Detail code No. 101, 102) Replace the INV board. 2) Converter-related errors (4220 Detail code No. 01, 108, 109, 121) Replace the INV board. 3) ACCT sensor circuit failure (5300 Detail code No.115) Replace the INV board. 4) IPM open (5300 Detail code No. [-] None) Normal 5) Power-supply-related problems occur. Replace the INV board. Error code : 4115, 4102 Detail code : 01, [-] None [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 1 Mohm. Check that there is no liquid refrigerant in the compressor. If there is none, replace the compressor. 2) Compressor coil resistance failure Coil resistance value of 1 ohm (20˚C [68˚F]): BU, AU Replace the compressor. 1) Inverter-related problems are detected. Turn SW5-1 to OFF, and see item "1." 2) Inverter voltage is not output at the terminals Replace the INV board. (3) Operate the units. 3) There is an voltage imbalance between the wires. Check the inverter Greater than 5% imbalance or 5V output volt-age after the inverter output frequency 4) There is no voltage imbalance behas stabilized. tween the wires. Replace the INV board. [3] (1) Remove the inverter Check whether output cable from U, V, the inverter is and W-W terminals. damaged. (No load) (2) Turn SW5-1 on the control board to ON. [4] Check whether the inverter is damaged. (During compressor operation) Operate the units. Check the inverter output volt-age after the inverter output frequency has stabilized. 1) There is an voltage imbalance between the wires. Greater than 5% imbalance or 5V - 72 - Normal *Turn SW5-1 to OFF. Replace the INV board. (3) Trouble treatment when the main power breaker is tripped Items to be checked Phenomena Remedy [1] Check the breaker capacity. Use of a non-specified break- Replace it with a specified breaker. er [2] Perform Meg check between the terminals on the power terminal block TB1. Zero to several ohm, or Meg failure [3] Turn on the power again and check again. 1) Main power breaker trip 2) No remote control display [4] Turn on the outdoor unit and check 1) Operates normally without that it operates normally. tripping the main breaker. 2) Main power breaker trip Check each part and wiring. *Refer to (5) "Simple checking proc edures for individual components of main inverter circuit".(page 74) INV board Noise filter board AC reactor a) The wiring may have been short-circuited. Search for the wire that short-circuited, and repair it. b) If item a) above is not the cause of the problem, refer to (2)-[1]. (4) Trouble treatment when the main power earth leakage breaker is tripped Items to be checked Phenomena Remedy [1] Check the earth leakage breaker capacity and the sensitivity current. Use of a non-specified earth leakage breaker Replace with a regulation earth leakage breaker. [2] Check the resistance at the power supply terminal block (TB1) with a megger. Failure resistance value Check each part and wiring. *Refer to (5) "Simple checking proc edures for individual components of main inverter circuit".(page 74) INV board Noise filter board AC reactor [3] Disconnect the compressor wirings and check the resistance of the compressor with a megger. Failure compressor if the insulating resistance value is not in specified range. Failure when the insulating resistance value is 1 Mohm or less. Check that there is no liquid refrigerant in the compressor. If there is none, replace the compressor. The insulation resistance could go down to close to 1Mohm after installation or when the power is kept off for an extended period of time because of the accumulation of refrigerant in the compressor. If the earth leakage breaker is triggered, please use the following procedure to take care of this. Disconnect the wires from the compressor's terminal block. If the resistance is less than 1 Mohm, switch on the power for the outdoor unit with the wires still disconnected. Leave the power on for at least 12 hours. Check that the resistance has recovered to 1 Mohm or greater. Earth leakage current measurement method For easy on-site measurement of the earth leakage current, enable the filter with a measurement instrument that has filter functions as below, clamp all the power supply wires, and measure. Recommended measurement instrument: CLAMP ON LEAK HiTESTER 3283 made by HIOKI E.E. CORPORATION When measuring one device alone, measure near the device's power supply terminal block. - 73 - (5) Simple checking procedure for individual components of main inverter circuit Leave the power turned off for 10 minutes, check that the voltage between pins 1 and 3 of CN631 on the control board is 20V or below, and remove the circuit board or the parts from the control box. When any problem is found with the circuit board or other parts, replace them. Part name Judgment method INV board See " Inver ter output related troubles "( 9 [3] - 5 - (2) )(page 72) Noise filter board (Inrush current limiting resistor) Measure the resistance between terminal RS: 20 ohm Noise filter board (Electromagnetic relay 52C) This electromagnetic relay is rated at DC12V and is driven by a coil. Check the resistance between terminals (52C on the noise filter board) Parts Coil Contact DC reactor ACL 10% Checkpoints Criterion value Not to be short-circuited Between pins 1 and 2 of CN52C (Center value 16 ohm) Both ends of RS 20 ohm 10% Measure the resistance between terminals: 1ohm or lower (almost 0 ohm) Measure the resistance between terminals and the chassis: - 74 - [4] Maintenance 1. Section 1 Recovering and charging refrigerant from the R134a side Before replacing the parts on PWFY-P100VM-E-BU (compressor, LEV, strainer (ST2), PHEX), be sure to take the following steps. [Recovering the refrigerant] 1. Stop all indoor and outdoor units, and turn off all power supplies to the units. 1) Check that all indoor and outdoor units are stopped. 2. Recover all refrigerant remaining inside the unit through the check joint. Do not release the extracted refrigerant into the atmosphere. [Charging refrigerant] 1. Evacuate air from the unit through the check joint. Refer to section 1-[8] "Vacuum Drying" for detailed procedures. 2. Charge 1.1 kg of R134a through the check joint. Check the Service Manual that came with the outdoor unit for how to recover refrigerant from or charge refrigerant into the outdoor units. Check joint (CJ) [Cleaning the water strainer] 1. Remove the caulking used to fill the space between the insulation material and the unit. 2. Peel off the tape that is holding insulation material together. 3. Remove the strainer, take the net out, and clean it with a brush. To remove the strainer, hold part A with a pipe wrench so that the strainer will not move, and loosen part B with a spanner. Use two spanners to tighten or loosen the strainer. 4. When cleaning is finished, replace the parts in the reverse order as they were removed. Caulking material Peel off the tape. Part A Part B Remove the strainer and clean it. [Replacing the strainer] 1. Remove the caulking used to fill the space between the insulation material and the unit. Caulking material B Peel off the tape. 2. Peel off the tape that is holding insulation material together. Rotation direction 3. Hold part A with a spanner, and loosen part B with a spanner by turning it counterclockwise, and remove the strainer. Use two spanners to tighten or loosen the strainer. A 4. Replace the parts in the reverse order as they were removed. - 75 - [Replacing the parts on PWFY-P100VM-E-BU] Recover the refrigerant before replacing the parts. Refer to section 1 "Recovering the refrigerant" for how to recover the refrigerant. 1. Stop all indoor and outdoor units, and turn off all power supplies to the units. 1) Check that all indoor and outdoor units are stopped. 2. Recover all refrigerant remaining inside the unit through the check joint. Do not release the extracted refrigerant into the atmosphere. [Replacing the compressor] 1. Debraze the parts on the pipe that are marked with an arrow, and replace the compressor. 2. After replacement is complete, securely connect the cables, and place the cover (A) back on. Brazed part Discharge pipe U phase (wire color: red) Cover (A) V phase (wire color: white) W phase (wire color: black) Front Check joint - 76 - [Replacing the LEV] Replacing LEV1 1. Debraze the parts on the pipe that are indicated in the figure, and replace LEV1. 2. Connect the connector to CNLVC on the circuit board. In the case of PWFY-P200VM-E/E1/E2-AU, connect the connectors to CNLVB and CNLVC on the circuit board. Replacing LEV2 1. Debraze the parts on the pipe that are indicated in the figure, and replace LEV1. 2. Connect the connector to CNLVA on the circuit board after installation is complete. LEV2 : Brazed part LEV1 : Brazed parts LEV1 : Brazed parts [Replacing the heat exchanger] Replacing the refrigerant-refrigerant heat exchanger 1. Cut the part that is indicated in the figure. 2. Debraze the parts on the pipe that are indicated in the figure. 3. Rebraze the debrazed parts after replacement. *PWFY-P100VM-E/E1/E2-AU only has one LEV. Replacing the water-refrigerant heat exchanger 1. Debraze the parts on the pipe that are indicated in the figure. 2. Rebraze the debrazed parts after replacement. Refrigerant-refrigerant heat exchanger Brazed parts CUT Brazed part Brazed parts Brazed part Water - refrigerant heat exchanger Water - refrigerant heat exchanger *Common to PWFY-P100/P200VM-E/E1/E2-AU - 77 - [Replacing the strainer] 1. Debraze the parts on the pipe that are indicated in the figure. 2. Rebraze the debrazed parts after replacement. ST2 Brazed parts [Replacing the solenoid valve] 1. Unscrew the screws. 2. Debraze the parts on the pipe that are indicated in the figure. 3. Rebraze the debrazed parts after replacement. 4. Connect the connector to CN502 on the circuit board. <PWFY-P100/P200VM-E/E1-AU> <PWFY-P100/P200VM-E2-AU> Screw Screw (SVG) Screw (SV1) Brazed parts (SV1) Brazed parts Brazed parts (SVL) *Common to PWFY-P100/P200VM-E1/E2-AU - 78 - Brazed parts (SVG) Screw (SVL) [Replacing the check valve] 1. Debraze the parts on the pipe that are indicated in the figure. 2. Rebraze the debrazed parts after replacement. <PWFY-P100/P200VM-E/E1-AU> <PWFY-P100/P200VM-E2-AU> Brazed parts (CV1) Brazed parts (CV2) Brazed parts [Replacing the strainer ST3, ST4] 1. Debraze the parts on the pipe that are indicated in the figure. 2. Rebraze the debrazed parts after replacement. <PWFY-P100/P200VM-E/E1-AU> <PWFY-P100/P200VM-E2-AU> ST2 ST4* Brazed parts Brazed parts (ST2) *ST3 in the case of P100VM-E/E1/E2-AU - 79 - ST4* Brazed parts 0 LED display [1] LED Monitor Display 1. How to Read the LED on the Service Monitor (1) How to read the LED By setting the DIP SW 2-1 through 2-10 (Switch number 10 is represented by 0), the operating condition of the unit can be monitored on the service monitor. (Refer to the table on the following pages for DIP SW settings.) The service monitor uses 4-digit 7-segment LED to display numerical values and other types of information. 7SEG LED SW2 1 2 3 4 5 6 7 8 9 10 ON SW1-10 is represented as "0" in the table. Pressure and temperature are examples of numerical values, and operating conditions and the on-off status of solenoid valve are examples of flag display. 1) Display of numerical values Example: When the pressure data sensor reads 18.8kg/cm2 (Item No. 55) The unit of pressure is in kg/cm2 Use the following conversion formula to convert the displayed value into a value in SI unit. Value in SI unit (MPa) = Displayed value (kg/cm2) x 0.098 2) Flag display Example: Pump interlock Upper Lower LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 (2) LED display at initial setting From power on until the completion of initial settings, the following information will be displayed on the monitor screen. (Displays No. 1 through No. 4 in order repeatedly.) No Item Display Remarks Software version 1 [0104] : Version 1.04 Refrigerant type 2 [ 134] : R134A Model and capacity [A-04] : PWFY-P100VM-E-AU [A-08] : PWFY-P200VM-E-AU [b-04] : PWFY-P100VM-E-BU 3 Communication address 4 [ 01] : Address 1 After the initial settings have been completed, the information on these items can be checked by making the switch setting that corresponds to No. 261 in the LED display table. Only item No. 1 "Software Version" appears on the display if there is a wiring failure between the control board and the transmission line power supply board or if the circuit board has failed. - 80 - (3) Time data storage function If an error (including a preliminary error) occurs, the error history data and the error detection time are stored into the service memory. The error detection time stored in the service memory and the current time can be seen on the service LED. 1) Use the time displayed on the service LED as a reference. 2) The date and the time are set to "00" by default. 3) The time is not updated while the power of the indoor unit is turned 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, the time that differs the actual time will be displayed. (This also applies when a power failure occurs.) (3)-1 Reading the time data: 1) Time display Example: 12 past 9 * Disappears if the time data is deviated due to a power failure, or if a system controller that sets the time is not connected. 2) Date display When the main controller that can set the time is connected Example: May 10, 2003 Alternate display Alternate display of year and month, and date * Appears between the year and the month, and nothing appears when the date is displayed. When the main controller that can set the time is not connected Example: 52 days after power was turned on Alternate display Day count * Appears between the year and the month, and nothing appears when the date is displayed. - 81 - - 82 - 0000000000 1000000000 0100000000 1100000000 0010000000 1010000000 0110000000 1110000000 0001000000 1001000000 0101000000 1101000000 0011000000 1011000000 0111000000 1111000000 0000100000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1234567890 SW1 0 No. Current data Item 0000 to 9999 Operation status External signal External signal 52C LD5 3-minutes restart mode -99.9 to 999.9 Compressor in operation Preliminary error 0000 to 9999 Contact point demand LD4 LD6 Error 0000 to 9999 (Address and error codes highlighted) SV1 LD3 Contact point demand capacity Outlet LD2 0000 to 9999 Inlet Comp in operation LD1 Display Communication demand capacity TH0 Preset temperature Error code display 2 Preliminary BU/WH error Error code display 1 BU/WH error Relay output display 1 Lighting LED monitor display 3-minutes restart after instantaneous power failure Pump interlock (Contact: open) BU LD7 CPU in operation LD8 If not demanded controlled, "----" [ % ] appears on the display. If not demanded controlled, "----" [ % ] appears on the display. Display of the latest preliminary error If no preliminary errors are detected, "----" appears on the display. Remarks - 83 - 1000100000 0100100000 1100100000 0010100000 1010100000 0110100000 1110100000 0001100000 1001100000 0101100000 1101100000 0011100000 1011100000 0111100000 1111100000 0000010000 1000010000 0100010000 1100010000 0010010000 1010010000 0110010000 1110010000 0001010000 1001010000 0101010000 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 1234567890 SW1 17 No. Current data Control mode BC controller operation mode Operation mode Item Stop Standby Heating Hot Water Permit Cooling OFF LD2 Cooling ON LD1 Abnormal stop Prohibit Heating ECO Heating ON LD3 Scheduled control Defrost Antifreeze Heating OFF LD4 Display Cooling LD5 Defrost LD6 High frequency oil recovery LD7 Low frequency oil recovery Stop LD8 Remarks - 84 - 0001110000 1001110000 0101110000 1101110000 0011110000 1011110000 0111110000 1111110000 0000001000 1000001000 56 57 58 59 60 61 62 63 64 65 Test-run mode LD5 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 Power failure LD4 0000 to 9999 0000 to 9999 -99.9 to 999.9 -99.9 to 999.9 COMP output frequency COMP 1 primary current COMP operating current 0 to 480 0000 to 9999 COMP control frequency LEV2 LEV1 -99.9 to 999.9 Anti-freeze LD3 Low-pressure sensor data Refrigerant recovery LD2 -99.9 to 999.9 LD1 Display High-pressure sensor data THHS1 TH8 TH6 TH22 TH13/TH23 TH11 Control mod Item LD6 *1 Output frequency of the inverter depends on the type of compressor and equals the integer multiples of the operating frequency of the compressor. 1110110000 55 1010110000 0110110000 53 54 1000110000 49 0010110000 0000110000 48 52 1111010000 47 0100110000 0111010000 46 1100110000 1011010000 45 50 0011010000 44 51 1101010000 1234567890 SW1 43 No. Current data LD7 LD8 The unit is [Arms] The unit is [Arms] The unit is [rps] Compressor operating frequency (*1) The unit is [rps] LEV opening (Fully open : 480) The unit is [kgf/cm2] The unit is [ C] The unit is [ C] Remarks - 85 - 1100001000 0010001000 1010001000 0110001000 1110001000 0001001000 1001001000 0101001000 1101001000 0011001000 1011001000 0111001000 1111001000 0000101000 1000101000 0100101000 1100101000 0010101000 1010101000 0110101000 1110101000 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 0100001000 1234567890 SW1 66 No. Current data 0000 to 9999 LD5 0000 to 9999 0000 to 9999 0000 to 9999 Lower 4 digits of the number of COMP startstops Upper 4 digits of operation time (excluding stoppage time) Lower 4 digits of operation time (excluding stoppage time) Td rise 0000 to 9999 Upper 4 digits of the number of COMP startstops Backup 0000 to 9999 Lower 4 digits of COMP operation time -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 LD4 0000 to 9999 Low-pressure drop LD3 Upper 4 digits of COMP operation time LD2 -99.9 to 999.9 High-pressure rise LD1 Display Td* SC SH Target SC Target SH Te Tc COMP bus voltage Item LD6 LD7 LD8 Circulating water replacement indicator timer The unit is [ h ] The unit is [ C] The unit is [ V ] Remarks - 86 - 0111101000 1111101000 0000011000 1000011000 0100011000 1100011000 0010011000 94 95 96 97 98 99 100 0001011000 1001011000 0101011000 1101011000 0011011000 1011011000 0111011000 1111011000 0000111000 1000111000 0100111000 1100111000 0010111000 104 105 106 107 108 109 110 111 112 113 114 115 116 1110011000 1011101000 93 103 0011101000 92 1010011000 1101101000 91 0110011000 0101101000 90 101 1001101000 102 0001101000 89 1234567890 SW1 88 No. Current data Item LD1 LD2 LD3 LD4 Display LD5 LD6 LD7 LD8 Remarks - 87 - 1101111000 0011111000 1011111000 0111111000 1111111000 0000000100 1000000100 0100000100 1100000100 0010000100 1010000100 0110000100 1110000100 0001000100 123 124 125 126 127 128 129 130 131 132 133 134 135 136 0011000100 1011000100 0111000100 1111000100 0000100100 1000100100 140 141 142 143 144 145 1101000100 0101111000 122 139 1001111000 121 1001000100 0001111000 120 0101000100 1110111000 119 137 0110111000 138 1010111000 118 1234567890 SW1 117 No. Current data Item LD1 LD2 LD3 LD4 Display LD5 LD6 LD7 LD8 Remarks - 88 - 0101100100 1101100100 0011100100 1011100100 0111100100 1111100100 0000010100 1000010100 0100010100 154 155 156 157 158 159 160 161 162 1110010100 0001010100 1001010100 0101010100 1101010100 0011010100 1011010100 0111010100 167 168 169 170 171 172 173 174 0110010100 1001100100 153 166 0001100100 152 1010010100 1110100100 151 165 0110100100 150 1100010100 1010100100 149 0010010100 0010100100 148 163 1100100100 164 0100100100 147 1234567890 SW1 146 No. Current data Item LD1 LD2 LD3 LD4 Display LD5 LD6 LD7 LD8 Remarks - 89 - SW1 1111010100 0000110100 1000110100 176 177 1234567890 175 No. Current data Item LD1 LD2 LD3 LD4 Display LD5 LD6 LD7 LD8 Remarks - 90 - SW1 0100001100 194 0000 to 9999 Display LD5 200 Error details of inverter (0001-0120) Error details of inverter 1110001100 0001001100 199 0000 to 9999 Error details of inverter (0001-0120) 0000 to 9999 Error details of inverter (0001-0120) 0000 to 9999 Error details of inverter (0001-0120) 0000 to 9999 Error details of inverter (0001-0120) 0000 to 9999 Error details of inverter (0001-0120) 0000 to 9999 Error details of inverter (0001-0120) 0000 to 9999 Error details of inverter (0001-0120) 0000 to 9999 Error details of inverter (0001-0120) 0000 to 9999 Error details of inverter (0001-0120) LD4 0000 to 9999 LD3 Error history of inverter (At the time of last data backup before error) LD2 0110001100 LD1 Error details of inverter (0001-0120) Error history 10 Error details of inverter Error history 9 Error details of inverter Error history 8 Error details of inverter Error history 7 Error details of inverter Error history 6 Error details of inverter Error history 5 Error details of inverter Error history 4 Error details of inverter Error history 3 Error details of inverter Error history 2 Error details of inverter Error history 1 Item Error details of inverter 198 1000001100 193 1010001100 0000001100 192 197 1111110100 191 1100001100 0111110100 190 0010001100 1011110100 189 196 0011110100 188 195 1101110100 187 0001110100 184 1001110100 1110110100 182 183 0101110100 0110110100 181 185 1010110100 180 186 1100110100 0010110100 179 0100110100 1234567890 178 No. Error history LD6 LD7 LD8 Address and error codes highlighted If no errors are detected, "---- " appears on the display. Remarks - 91 - 0010101100 1010101100 0110101100 1110101100 0001101100 1001101100 0101101100 1101101100 0011101100 1011101100 0111101100 1111101100 213 214 215 216 217 218 219 220 221 222 223 0000101100 208 212 1111001100 207 1100101100 0111001100 206 211 1011001100 205 0100101100 0011001100 204 210 1101001100 203 1000101100 0101001100 202 209 1001001100 1234567890 SW1 201 No. Data before error TH8 TH6 TH22 TH13/TH23 TH11 Preset temperature Relay output display 1 Lighting Control mode BC controller operation mode Operation mode Operation status Item Comp in operation Stop Refrigerant recovery Standby Heating Hot Water Permit Cooling OFF LD2 Cooling ON BC operation signal LD1 SV1 Anti-freeze Abnormal stop Prohibit Heating ECO Heating ON 3-minutes restart mode LD3 52C Test-run mode Cooling Preliminary error LD5 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 Power failure Scheduled control Defrost Antifreeze Heating OFF Compressor in operation LD4 Display Defrost Error LD6 BU High frequency oil recovery 3-minutes restart after instantaneous power failure LD7 Always lit Low frequency oil recovery Stop Preliminary low pressure error LD8 The unit is [ C] Items No. 201 through No. 255 indicate abnormal unit stoppage or preliminary error data. Remarks - 92 - 0001011100 1001011100 232 233 0010111100 1010111100 0110111100 1110111100 244 246 247 1100111100 243 245 1000111100 0100111100 241 0000111100 240 242 0111011100 1111011100 238 239 1011011100 1110011100 231 237 0110011100 230 0011011100 1010011100 229 236 0010011100 228 1101011100 1100011100 227 235 0100011100 226 0101011100 1000011100 234 0000011100 225 1234567890 SW1 224 No. Data before error LD5 -99.9 to 999.9 LD4 -99.9 to 999.9 COMP operating current SH Target SC Target SH Te Tc -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 -99.9 to 999.9 0000 to 9999 -99.9 to 999.9 COMP 1 primary current COMP bus voltage 0000 to 9999 0000 to 9999 0 to 480 0000 to 9999 COMP output frequency COMP control frequency LEV2 LEV1 -99.9 to 999.9 LD3 Low-pressure sensor data LD2 -99.9 to 999.9 LD1 Display High-pressure sensor data THHS1 Item LD6 LD7 LD8 The unit is [ C] The unit is [ V ] The unit is [ Arms] The unit is [ Arms] Compressor operating frequency The unit is [ rps] The unit is [ rps] LEV opening (Fully open : 480) The unit is [kgf/cm2] Remarks - 93 - 0111111100 1111111100 0000000010 254 255 256 0101000010 1101000010 0011000010 1011000010 0111000010 1111000010 0000100010 266 268 269 270 271 272 1001000010 265 267 1110000010 0001000010 0110000010 262 263 1010000010 264 0010000010 260 261 1100000010 1011111100 253 259 0011111100 252 0100000010 1101111100 251 258 0101111100 250 1000000010 1001111100 249 257 0001111100 1234567890 SW1 248 No. Data before error 0000 to 9999 Lower 4 digits of the number of COMP startstops BC controller address BC address INV version 1 OC address LD7 0.00 to 99.99 OC address S/W version -> Refrigerant type -> Model and capacity -> Communication address display Count-up display of number of connected units RC address Version / capacity LD6 The unit displays its own address and the model code alternately. 0000 to 9999 Upper 4 digits of the number of COMP startstops Unit address LD5 -99.9 to 999.9 LD4 0000 to 9999 LD3 Lower 4 digits of COMP operation time LD2 0000 to 9999 LD1 Display Upper 4 digits of COMP operation time SC Item LD8 The unit is [ h ] Remarks - 94 - 0101010010 1101010010 0011010010 298 300 1001010010 297 299 1110010010 0001010010 0110010010 294 295 1010010010 293 296 0010010010 292 1011100010 285 1100010010 0011100010 284 291 1101100010 283 0100010010 0101100010 282 290 1001100010 281 1000010010 0001100010 280 0000010010 1110100010 279 289 0110100010 278 288 1010100010 277 1111100010 0010100010 276 287 1100100010 275 0111100010 0100100010 286 1000100010 274 1234567890 SW1 273 No. Data before error Item LD1 LD2 LD3 LD4 Display LD5 LD6 LD7 LD8 Remarks - 95 - SW1 1000001010 0100001010 1100001010 0010001010 1010001010 0110001010 1110001010 0001001010 1001001010 321 323 324 325 326 327 328 329 0000001010 320 322 1111110010 319 1001110010 313 0111110010 0001110010 312 1011110010 1110110010 311 318 0110110010 310 317 1010110010 309 0011110010 0010110010 308 316 1100110010 307 0101110010 0100110010 306 1101110010 1000110010 305 314 0000110010 304 315 0111010010 1111010010 302 303 1011010010 1234567890 301 No. Current data Item LD1 LD2 LD3 LD4 Display LD5 LD6 LD7 LD8 Remarks - 96 - 0011101010 1011101010 0111101010 350 0110101010 342 349 1010101010 341 348 0010101010 340 1101101010 1100101010 339 347 0100101010 338 0101101010 1000101010 337 1001101010 0000101010 336 346 1111001010 335 345 0111001010 334 0001101010 1011001010 333 344 0011001010 332 1110101010 1101001010 343 0101001010 331 1234567890 SW1 330 No. Current data Item LD1 LD2 LD3 LD4 Display LD5 LD6 LD7 LD8 Remarks - 97 - 0111011010 1111011010 0000111010 1000111010 0100111010 1100111010 0010111010 1010111010 0110111010 1110111010 0001111010 1001111010 0101111010 367 368 369 370 371 372 373 374 375 376 377 378 0101011010 362 366 1001011010 361 1011011010 0001011010 360 0011011010 1110011010 359 365 0110011010 358 364 1010011010 357 1101011010 0010011010 356 363 0100011010 1100011010 1000011010 353 354 0000011010 352 355 1111101010 1234567890 SW1 351 No. Data on indoor unit system Item LD1 LD2 LD3 LD4 Display LD5 LD6 LD7 LD8 Remarks - 98 - 1101000110 1011000110 0111000110 1111000110 0000100110 1000100110 0100100110 1100100110 0010100110 1010100110 0110100110 1110100110 397 398 399 400 401 402 403 404 405 406 407 0101000110 394 0011000110 1001000110 393 395 0001000110 392 396 0110000110 1110000110 1010000110 389 390 0010000110 388 391 1100000110 0000000110 384 387 1111111010 383 1000000110 0111111010 382 0100000110 1011111010 381 385 0011111010 380 386 1101111010 1234567890 SW1 379 No. Data on indoor unit system Item LD1 LD2 LD3 LD4 Display LD5 LD6 LD7 LD8 Remarks - 99 - 0001100110 1001100110 0101100110 1101100110 0011100110 1011100110 0111100110 1111100110 0000010110 1000010110 0100010110 1100010110 0010010110 1010010110 0110010110 1110010110 0001010110 1001010110 0101010110 1101010110 0011010110 1011010110 0111010110 1111010110 0000110110 1000110110 0100110110 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 1234567890 SW1 408 No. Item Time of error detection 1 Current time -2 Current time Data on indoor unit system LD1 LD2 LD3 LD5 00:00 to 23:59 00.00 to 99.12/1 to 31 00:00 to 23:59 LD4 Display LD6 LD7 LD8 Hour: minute Year and month, and date alternate display Hour: minute Remarks - 100 - 1100110110 0010110110 1010110110 0110110110 1110110110 0001110110 1001110110 0101110110 1101110110 0011110110 1011110110 0111110110 1111110110 0000001110 1000001110 0100001110 1100001110 0010001110 1010001110 0110001110 1110001110 0001001110 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 1234567890 SW1 435 No. Item LD5 00.00 to 99.12/1 to 31 00:00 to 23:59 00.00 to 99.12/1 to 31 00:00 to 23:59 00.00 to 99.12/1 to 31 00:00 to 23:59 00.00 to 99.12/1 to 31 00:00 to 23:59 00.00 to 99.12/1 to 31 00:00 to 23:59 00.00 to 99.12/1 to 31 00:00 to 23:59 00.00 to 99.12/1 to 31 00:00 to 23:59 00.00 to 99.12/1 to 31 00:00 to 23:59 00.00 to 99.12/1 to 31 00:00 to 23:59 00.00 to 99.12/1 to 31 LD4 00.00 to 99.12/1 to 31 LD3 Time of last data backup before error -2 LD2 00:00 to 23:59 LD1 Display Time of last data backup before error Time of error detection 10-2 Time of error detection 10 Time of error detection 9-2 Time of error detection 9 Time of error detection 8-2 Time of error detection 8 Time of error detection 7-2 Time of error detection 7 Time of error detection 6-2 Time of error detection 6 Time of error detection 5-2 Time of error detection 5 Time of error detection 4-2 Time of error detection 4 Time of error detection 3-2 Time of error detection 3 Time of error detection 2-2 Time of error detection 2 Time of error detection 1-2 Data on indoor unit system LD6 LD7 LD8 Year and month, and date alternate display Hour: minute Year and month, and date alternate display Hour: minute Year and month, and date alternate display Hour: minute Year and month, and date alternate display Hour: minute Year and month, and date alternate display Hour: minute Year and month, and date alternate display Hour: minute Year and month, and date alternate display Hour: minute Year and month, and date alternate display Hour: minute Year and month, and date alternate display Hour: minute Year and month, and date alternate display Hour: minute Year and month, and date alternate display Remarks - 101 - 1011101110 1111101110 0000011110 1000011110 0100011110 1100011110 0010011110 1010011110 479 480 481 482 483 484 485 0011101110 476 0111101110 1101101110 475 477 0101101110 474 478 0001101110 1001101110 472 1110101110 471 473 0110101110 1100101110 0010101110 467 468 470 0100101110 466 1010101110 1000101110 465 469 0000101110 464 1011001110 461 0111001110 0011001110 460 1111001110 1101001110 459 462 0101001110 458 463 1001001110 1234567890 SW1 457 No. Data on indoor unit system Item LD1 LD2 LD3 LD4 Display LD5 LD6 LD7 LD8 Remarks - 102 - 0100111110 1100111110 0010111110 1010111110 0110111110 1110111110 0001111110 1001111110 498 499 500 501 502 503 504 505 1111111110 1000111110 497 0111111110 0000111110 496 511 1111011110 495 510 0111011110 494 1011111110 1011011110 493 509 0011011110 492 0011111110 1101011110 491 508 0101011110 490 0101111110 1001011110 489 1101111110 0001011110 488 506 1110011110 487 507 0110011110 1234567890 SW1 486 No. LD3 LD4 0 to 254 LD2 INV board 1 WDT Reset counter LD1 Display 0 to 254 Item Control board WDT Reset counter Data on indoor unit system LD5 LD6 LD7 LD8 Remarks
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