Heiko J. WEW. ARIA JS050-A1 Owner's Manual
The Heiko J. WEW. ARIA JS050-A1 is a domestic air conditioner designed for comfortable and efficient indoor climate control. It features a variety of functionalities including Super Quiet operation, long distance air supplying, heating capabilities down to -15℃, and a sleep mode for optimal comfort. The unit boasts a range of control options like automatic operation, cooling, dehumidifying, heating, strength, mute and timing modes. It also offers features like defrosting, coil protection, and low/high load protection for optimal performance.
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SERVICE MANUAL Model JS050-A1 WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or Repair the product or products dealt with in this service information by anyone else could result in serious injury or death All rights reserved. Unauthorized copying and distribution is a violation of law Version V1 Date 2020-12-02 Contents Table of contents 1. Introduction............................................................................................ 1 2. Features ................................................................................................ 7 3. Specifications ........................................................................................ 8 4. Sensors list............................................................................................ 9 5. Piping diagrams.....................................................................................10 6. Printed Circuit Board Connector Wiring Diagram..................................11 7. Functions and Control ........................................................................... 14 8. Dimensional drawings ........................................................................... 25 9. Center of gravity .................................................................................... 25 10. Service d iagnosis................................................................................ 26 11. Wiring diagrams .................................................................................. 40 Domestic air conditioner Introduction 1 Introduction 1.1 Model name explanation J S 0 5 0 - A1 Platform of indoor units:F(F Plstform) Nominal cooling capacity (18000BTU/h) Indoor unit Domestic air conditioner lntroduction 1.2 Safety Cautions Be sure to read the following safety cautions before conducting repair work. The caution items are classified into "Warning" and "Caution". The "Warning" items are especially important since they can lead t,o death or serious injury if they are not followed closely. The "Caution" items can also lead to serious accidents under some conditions if they are not followed. Therefore, be sure to observe all the safety caution items described below. About the pictograms D This symbol indicates an item for which caution must be exercised. The pictogram shows the item to which attention must be paid. o This symbol indicates a prohibited action. The prohibited item or action is shown inside or near the symbol. • This symbol indicates an action that must be taken, or an instruction. The instruction is shown inside or near the symbol. Afler the repair work is complete, be sure to conduct a test operation to ensure that the equipment operates Normally, and explain the cautions for operating the product to the customer. 1.2.1 Embedded wire checking before installation Check the embedded wire diameter suitable to request: 2 2 (Power supply from indoor: 2.Skw 2:1.0mm 3.Skw,Skw 2:1.Smm 7kw 2:1.0mm2 ; Power supply from outdoor 2:1.0mm 2 ) Check the embedded wire are four roots, L/N/CO�/GND; GND is needed, if not, thunder or high voltage wave from power grid will impact to the performan�e Using a multi-m�ter to test short circuit of the four roots wires, make sure no short circuit happen. 1.2.2 Caution in Repair Warning Be sure to disconnect the power cabie plug from the plug socket before disassembling the equipment for a repair. Working on the equipment that is connected to a power supply can cause an electrical shook. lf it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits, do not touch any electrically charged sections of the equipment. lf the refrigerant gas discharges during the repair work, do not touch the discharging refrigerant gas . The refrigerant gas can cause frostbite. 2 C (S) Domestic air conditioner lntroduction When disconnecting the suction or discharge pipe of the compressor at the welded section, release the refrigerant gas completely at a well-ventilated place first. lf there is a gas remaining inside the compressor , the refrigerant gas or refrigerating machine oil o discharges when the pipe is disconnected, and it can cause injury. lf the refrigerant gas li,aks during the repair work, ventilate the area. The refrigerant gas can generate toxic gases when it contacts flames. A The step-up capacitor supplies high-voltage electricity to the electrical components of the outdoor unit. Be sure to discharge the capacitor completely before conducting repair work . A charged capacitor can cause an electrical shock. Do not start or stop the air conditioner operation by plugging or unplugging the power cabie plug. (S) Plugging or unplugging the power cabie plug to operate the equipment can cause an electrical shock or fire. Warning (S) (S) Do not repair the electrical components with wet hanqs . Working on the equipment with wet hands can cause an electrical sho�k Do not clean the �ir conditioner by splashing water. Washing the unit with water can cause an electrical o shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shock. Be sure to turn off the power switch and unplug the power cabie when cleaning the equipment. The interna! fan rotates at a high speed, and cause injury. � (S) Do not tilt the unit when removing it. The watE;r inside the unit can spili and wet the furniture and floor. Be sure to check that the refrigerating cycle section has cooled down sufficiently before conducting repair o work. Working on the unit when the refrigerating cycle section is hot can cause burns. Use the welder in a well-ventilated place. Using the welder in an enclosed room can cause oxygen deficiency. 1.2.3 Cautions Regarding Products after Repair Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to 3 I Domestic air conditioner lntroduction conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools can cause an electrical shock, excessive heat generation or fire. When relocating the equipment, make sure that the new instaliation site has sufficient strength to withstand the weight of the equipment. lf the instaliation site does not have sufficient strength and if the instaliation work is not conducted securely, the equipment can fali and cause injury. Be sure to instali the product correctly by using the provided standard instaliation frame. For lncorrect use of the instaliation frame and improper instaliation can cause the equipment to fali, resulting integral in injury. units only Be sure to instali the product securely in the instaliation frame mounted on a window frame. lf the unit is not securely mounted, it can fali and cause injury. For integral units only Warning Be sure to use an �xclusive power circuit for the equipment, and foliow the technical standards related to the electrical equipment, the interna! wiring regulations and the instruction manuał for installation wh�n conducting electrical wor�. lnsufficient power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cabie to connect between the indoor and outdoor units. Make the connections securely and route the cabie properly so that there is no force puliing the cabie at the connection terminals. lmproper connections can cause excessive heat generation or fire. When connecting the cabie between the indoor and outdoor units, make sure that the terminal cover does not lift off or dismount because of the cabl�. lf the cover is not mounted properly, the terminal connection section can cause an electrical shock, excessive heat generation or fire. Do not damage or modify the power cabie. Damaged or modified power cabie can cause an electrical shock or fire. Placing heavy items on the po'◊'er cabie, and heating or puliing the power cabie can damage the cabie. (S) Do not mix air or gas other than the specified refrigerant (R32) in the refrigerant system. lf air enters the refrigerating system, an excessively high pressure results, causing equipment damage and injury. lf the refrigerant gas leaks, be sure to locate the leak and repair it before charging the refrigerant. After charging refrigerant, make sure that there is no refrigerant leak. lf the leak cannot be located and the repair work must be stopped, be sure to perform pump-down and close the service valve, to prevent the refrigerant gas from leaking into the room. The refrigerant gas 4 o Domestic air conditioner lntroduction itself is harmless, but it can generate toxic gases when it contacts flames, such as fan and other heaters, stoves and ranges. When replacing the coin battery in the remote controller, be sure to disposed of the ald battery to prevent children from swallowing it. lf a chi Id swallows the coin battery, see a doctor immediately. Caution lnstallation of a leąkage breaker is necessary in same cases depending on the conditions of the installation site, to prevent electrical shocks. Do not install the equipme�t in a place where there is a possibility of combustible gas leaks. lf a combustible gas leaks and remains around the unit, it can cause a fire. Be sure to install the packing and seal on the installation frame properly. lf the packing and seal are not (S) installed properly, water can enter the room and wet the furniture and floor. 1.2.4 lnspection after Repair Warning Check to make sure that the power cabie plug is not dirty or loose, then insert the plug into a power outlet all the way. lf the plug has dust or loose connection, it can cause an electrical shock or fire. lf the power cabie and lead wires have scratches or deteriorated, be sure to replace thel]l. Damaged cabie and wires can cause an electrical shock, excessive heat generation or fire. o o Węrning Do not use a joined power cabie or extension cabie, or share the same power outlet with other electrical appliances since it can cause an electrical shock, excessive heat generation or fire. 5 Domestic air conditioner lntroduction Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. lmproper installation and connections can cause excessive heat generation, fjre or an electrical shock. lf the installation platform or frame has corroded, replace it. Corroded installation platform or frame can cause the unit to fali, resulting in injurY,. Check the grounding, and repair it if the equipment is not properly grounded. lmproper grounding can cause an electrical shock. Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 M ohm or higher. o Faulty insulation can cause an electrical shock. Be sure to check the drainage of the indoor unit after the r�pair. Faulty drainage can cause the water to enter the room and wet the furniture and floor. 1.2.4 Using lcons lcons are used to attract the attention of the reader to specific information. The meaning of each icon is described in the table below: 1.2.5 Using lcons List lcon Type of lnformati9n Note Description A "note" provides information that is not indispensable, but may Note nevertheless be valuable to the reader, such as tips and tricks. A "caution" is used when there is danger that the reader, through &c;aution incorrect manipulation, may damage equipment, loose data, get Caution an unexpected result or has to restart (part of) a procedure. &warning [! Warning A "warning" is used when there is danger of personal injury. A "reference" guides the reader to other places in this binder or in Reference this manuał, where he/she will find additional information on a specific topie. 6 Domestic air conditioner Specifications 2.Features Super quiet: Lower noise operation condition A-PAM DC inverter:With adoption of S-TYPE,S-PAM and PHASE control technology to works more stably at low-frequency,and is more energy-saving,mor powerful at high frequency. Long distance air supplying: The indoor units is improved by the optimized motor, fan and air duct so as to provide long distance airflow with 12m+ maximum. -15 10 Heating: When -15 can still heating natural heating maintenance:Heating Holding 10 temperature Confortable sleep The setting temperature and the indoor noise can be adjusted to a more comfortable level when you set the “sleep mode” during night sleep. Super match:One outdoor unit can match two or more indoor unit. DIY auto mode: Adjust the last fixed operation mode automatically. Turbo mode: Quick cooling or heating Auto restart: Automatic return to previous operation conditions after sudden power blackout 24 hours timer: Use the timer function to set on,or off,or from on to off,or from off to on. Intergrative valve cover:The valve cover is Intergrative. 2-way piping design: The pipe can shoot out both from left or right side. Easy clean design: The panel is easy to wash and the airflow vents can be detached easily Double 8 display:The display is Double 8 mode. 7 Domestic air conditioner Specifications 3. Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE Phase / 1 Frequency Hz 50 Voltage V 230 NOMINAL CAPACITY and NOMINAL INPUT KW Capacity rated Btu/h cooling heating 5.2(1.4-6.0) 6.0(1.4-6.9) 17740(4770-20470) 20470(4770-23540) Power Consumption(Rated) KW 1.4 1.5 SEER/SCOP W/W 7.2 4.6 Annual energy consumption KWh 253 1401 Moisture Removal m³/h 2*10 ³ TECHNICAL SPECIFICATIONS Dimensions H*W*D mm 1009*223*327 Packaged Dimensions H*W*D mm 1080*290*400 Weight / KG 12.0 Gross weight / KG 15.0 Color / / White dB(A) 45/41/37/28 dB(A) 57 Sound Sound level peessure(Hi/Mid/Lo/Si) Sound power(high) Domestic air conditioner Specifications TECHNICAL SPECIFICATIONS-PARTS cooling Type Fan Cross flow fan Motor output W 40 Air flow rate(high) m³/h Speed(Hi/Mid/Lo) rpm 40 1000 1000/850/700 1050/900/750 Type Heat exchanger heating ML fin- Segment *stage*fitch 7HI-HX tube 3*16*1.4 Air direction control Right,Left,Horizontal,Downward Removable/Washable/Mildew Proof Air filter Microcomputer Control Temperature control Remote controller model 0010401715Y Note: the data are based on the conditions shown in the table below cooling heating Indoor: 27 DB/19 WB Indoor:20 DB Outdoor: 35 DB/24 WB Outdoor: 7 DB/6 WB 4 Piping length 5m Conversation formulae Kcal/h= KW×860 Btu/h= KW×3414 cfm=m³/min×35.3 Sensors list type Description Room sensor Its used for detecting room temperature Pipe sensor Its used for detecting temperature of evaporator Qty 1 Domestic air conditioner Piping diagrams 5ˊPiping diagrams 10 Domestic air conditioner Connector Wiring diagrams 6. Printed Circuit Board Connector Wiring Diagram Connectors PCB(1) (Control PCB) For JS050-A1 1) CN9 Connector for fan motor 2) CN6 Connector for heat exchanger thermistor and Room temperature thermistor 3) CN5、CN5’ Connector for UP&DOWN STEP motor 4) CN11、CN11’ Connector for RIGHT&LEFT STEP motor 5) CN21(white line)、CN52(black line) Connector for indoor terminal N and L 6) CN8 Connector for display board 7) CN23 (red line) Connector for communicate between the indoor board and the outdoor board 8) CN36 Connector for long-range control 9) CN34 Connector for wifi Module 10) CN2 Connector for wired controller 11) CN51 Connector for room card Note: Other designations PCB(1) (Indoor Control PCB) 1) CN14 Connector for Forced operation ON / OFF switch 2) FUSE1 Fuse 3.15A/250VAC Note: Other designations PCB(1) (Indoor Control PCB) 1) SW1 Connector for Forced operation ON / OFF switch 2) SW2 1 Select remote code A or B, 2 Select room card able or disable 3,4 Select 23 26 3) RV1 Varistor0 33 and 35 , 4) FUSE1 Fuse 3.15A/250VAC 1 2 OFF A N-RC UNIT MODEL JS050-A1 J1 J2 DISPLAY SERIES UNIT MODEL JS050-A1 ON B RC 3 4 ON ON 35 ON OFF 33 ON OFF 387 ON ON 317 OFF ON 26 OFF OFF 23 PCB MODEL 0011801123B(23) OFF OFF 325/498 OFF ON 324 DISPLAY MODEL 0011800387D 11 Domestic air conditioner PCB CN11 ‘’’ CN5 CN5’ CN11’ ‘’’ CN14 CN51 CN34 CN8 CN2 CN6 CN36 CN15 CN9 CN23 CN21 12 CN52 D omestic air conditioner Functions and Control 7.Funcitions and Control 7.1 Main functions and control specification 7.1.1 Automatic operation When the running mode is turned to automation after starting the system, the system will first determine the running mode according to the current room temperature and then will run according to the determined mode. Tr in the following selection conditions means room temperature, Ts means setting temperature, Tp means temperature of indoor coil pipe Tr≥Ts-3℃ Choose Cooling Mode Tr<Ts-3℃ Choose Heating Mode After turning to the automation mode, the running mode can be switched between cooling mode, fan mode and heating mode according to the change of the indoor ambient temperature. But the automatic conversion between cooling mode and heating mode must be conducted after 15 minutes. 7.1.2 Cooling operation mode Temperature control range: 16 ---30 Temperature difference: 1 * Control features: When Tr input airflow >Ts set temperature , the compressor will be opened, the indoor fan will operate at the set speed and the mode signal will be sent to the outdoor system. When Tr airflow Ts set temperature input , the compressor will be opened, the indoor fan will operate at the set speed and the mode signal will be sent to the outdoor system. The system will keep the original status if Tr= Ts. Airflow speed control: (temperature difference 1 ) Automatic: When Tr Ts+3 , high speed. When Ts+1 When Tr<Ts+1 Tr<Ts+3 , medium speed , low speed When the sensor is off, low speed When the airflow speed has no delay from the high to low switching, the speed should be delayed for 3 minutes (remain at high speed for 3 minutes.) before the next switch.Manus: When the system is operating, you can set the high, medium or low speed manually. (When the sensor is on or off, the system will change the speed 2 seconds after receiving the signal.)*Airgate location control: the location for the airgate can be set according to your needs.*Defrosting function: preventing the frosting on the indoor heat exchanger (when cooling or dehumidifying). When the compressor works continuously for 6 minutes and the temperature of the indoor coils has been below one centigrade for 10 seconds, the compressor will be stopped and the malfunction will be recorded in the malfunction list. The indoor system will continue to run. When the temperature of the indoor coil is raised to 9℃, the compressor will be restarted again (the requirement of 3 minutes’ delay should be satisfied.) * timing system on/off function. * Dormant control function. 7.1.3 Dehumidifying mode. * temperature control range: 16---30℃ * temperature difference: ±1℃ 13 Domestic air conditioner Functions and Control Control feature: send the dehumidifying signal to the outdoor system. When Tr>Ts+2℃, the compressor will be turned on, the indoor fan will operate at the set speed. When Tr is between the Ts and Ts+2℃, the outdoor system will operate at the high dehumidifying frequency for 10 minutes and then at the low dehumidifying mode for six minutes. The indoor fan will operate at low speed. When Tr< Ts-1.5℃, the outsystem will be stopped, the indoor fan will be stopped for 3 minutes and then turned to the low speed option. All the frequency converses have a ±1℃ difference. 区 段 Ts+20AD 值(约 2℃) 1 (COOL) Ts 区段 2(DRY) Ts+3AD 值(约 0.5℃) Ts-12AD 值(约 1.5℃) 区段 3(停机) * Wind speed control: Automatic: When Tr≥ Ts+ 5℃, high speed. When Ts+3℃≤Tr< Ts+5℃, medium speed. When Ts+2℃≤Tr< Ts+3℃, low speed. When Tr<Ts+2℃, light speed. If the outdoor fan stopped, the indoor fan will be paused for 3 minutes. If the outdoor fan stopped for more than 3 minutes and the outdoor system still operates, the system will be changed into light speed mode. When the airflow speed has no delay from the high to low switching, the speed should be delayed for 3 minutes (remain at high speed for 3 minutes.) before the next switch. Manual: When the sensor is off or Tr< Ts+3℃, the manual operation can not be made. (obligatory automatic operation.) *Airgate location control: the location for the airgate can be set according to your needs. *Defrosting function: preventing the frosting on the indoor heat exchanger (when cooling or dehumidifying). When the compressor works continuously for 6 minutes and the temperature of the indoor coils has been below 1℃ for 10 seconds, the compressor will be stopped and the malfunction will be recorded in the malfunction list. The indoor system will continue to run. When the temperature of the indoor coil is raised to 9℃, the compressor will be restarted again (the requirement of 3 minutes’ delay should be satisfied.) * Coil protection (synchronic overheating protection) are installed for the four directions latch malfunctions when dehumidifying. * Timing system on/off function. * Dormant control function. 14 Domestic air conditioner Functions and Control 7.1.4 Heating operation mode. * temperature control range: 16---30℃ * temperature difference: ±1℃ * control feature: the temperature compensation is automatically added and the system will send the heating signals to the outdoor system. If Tr+0.5℃≤Ts, the outdoor compressor is turned on, the indoor fan will be at the cold air proof mode. If Tr>Ts+1.5℃, the outdoor system is turned off, the indoor fan will be at the heat residue sending mode. *Indoor fan control manual control: You can choose high, medium, low and automatic speed control. Automatic: When Tr<Ts, high speed. When Ts≤Tr≤Ts+2℃, medium speed. When Tr> Ts+2℃, low speed. When the airflow speed has no delay from the high to low switching, the speed should be delayed for 3 minutes (remain at high speed for 3 minutes.) before the next switch. *Airgate location control: the location for the airgate can be set according to your needs. Coldair proof operation 1. The fan control functions as below: 设定 37(THHOT4) 35 23 37(THHOT3) 中风 35(THHOT2) 低风 25(THHOT1) 微弱风 16(THHOT0) 停止 * Residue heat sending. The indoor fan will send the residue heat at a low speed for 20 seconds. If other conditions are satisfied, when the compressor stops, the indoor system will operate at a light speed. The indoor fan will stop when the coil temperature is below the THHOT0. * Defrosting. When the system receives the defrosting signal from outdoors, the indoor fan will stop and the indoor temperature display won’t change. At the time, any indoor coil malfunctions will be neglected. When the outdoor defrosting finishes, the coil malfunction will still be neglected until the compressor has been started up for 30 seconds. The indoor temperature display will not change and the system operates at the cold air proof mode. * Automatic heating temperature compensation: when the system enters the heating mode, the temperature compensation (4℃) will be added. When the status is switched off, the compensation will be erased. 7.1.5 Strength operation The system enters the mode after receiving the ‘strength signal’. 15 Domestic air conditioner Functions and Control Send strength operation signal to the outdoor system. The mode change finishes the strength operation. Entering ‘mute’, you can have normal operation or signal control such as timing to finish the strength operation. When the system is at the automatic option with the strength/ mute function, if the system enters the cooling mode, the cooling strength/ mute function will be offered; if the system enters the heating mode, then the heating strength/ mute function will be offered; if the system enters the airflow mode, there will be no strength/ mute function. 7.1.6 Mute operation The system enters the mode after receiving the ‘mute signal’. a. Mute heating: the airflow speed is slight, the system sends the mute signal to the outdoor system. b. mute cooling: the airflow speed is slight, the system sends the mute signal to the outdoor system. When the compressor operates, the airflow speed is mute speed. EEPROM is adaptable. Mute operation can not work under the dehumidifying and airflow-sending operation. 7.1.7 Air refreshing(This model does not choose) After receiving the signal from the remote control, (HV series: the background light of the ‘health’ logo is green. HS series: the ‘health’ indicator will be lighted). If the fan operates, the Nano-Aqua operates to realize the ions sending function. If the indoor fan stops, the Nano-Aqua is turned off. When the Nano-Aqua is turned off, if the air refreshing system is turned on, the Nano-Aqua will be turned on when the fan operates. 7.1.8 Timing You can set 24 hours’ on/off timing accordingly. After the setting, the timing indicator will be lightened. Also, the light will be turning off after the timing is finished. The followings are several timing methods. 1.system /on timing: The timing indicator will be lightened and the indoor system is under the waiting mode. The light will be turned off when the timing is finished and the rest of the system will operate under a normal condition. The timing starts since the last reception of the timing signal. 2.system /off timing: When the system is turned on, the timing indicator is lightened, the rest of the system will operated under a normal condition. When set time comes, the indicator light will be turned off and the system will be turned off. If you have set the dormant functions, the order of your settings will be operated according to the timing settings. 3 .system /on and off timing: The settings will be completed according to the orders.. 7.1.9 Dormant operation The dormant timing is an eight hours unadaptable one. The timing signs are shown on the display board,if the model have timing or sleeping signs. 2.1 Under the cooling/ dehumidifying operation, after the setting of the dormant operation, the set temperature will be raised for 1 centigrade after 1 hour’s operation and will be raised for 1 centigrade 1 hour later. The system will keep this status for 6 hours and then close. 2.2 Under the heating mode, after the setting of the dormant operation, the setting temperature will fall 2 centigrade after 1 hour’s operation and will fall 2 centigrade 1 hour later. 3 hours after the preceding 16 Domestic air conditioner Functions and Control operations, the set temperature will be raised for 1 centigrade and the system will keep this status for 3 hours and then close down. 2.3 During the dormant time, except the change of the system mode or a new press on the dormant setting keys, the timing of the 8 hours dormancy will take the first timing as the start time, any presses on other keys will not affect the original timing. 2.4 Indoor fan control under the dormant operation. If the indoor fan is at the high speed before the dormant operation setting, the speed will be turned to medium after the setting. If the fan is at the medium speed before the dormant setting, the speed will be turned to low after the setting. If the fan is at the low speed before the dormant setting, the speed will not change. 7.1.10 Urgent on/off input Press the urgency button the buzzer will ring. The system will enter the automatic mode if you don’t press the button for more than 5 seconds. Under the system off mode, if you press the urgency key for 5 to 10 seconds, the system will start the test operation. Under the system off mode, if you press the urgency key for 10 to 15 seconds, the display screen will show the resume of the last malfunction. If the system is under operation, the press on the urgency key will stop it. Under the system off mode, the display screen will show automatic running sign. Under the system off mode, the system will not receive the remote control signal if the press on the urgency key doesn’t last for 15 seconds or if the key is loosened. Urgency operation: If you press the urgency key for less than 5 seconds, the buzzer will ring when you press the on/off key. The system will enter the urgency operation when the urgency key is loosened. The urgency operation is fully automatic. Test operation. The inlet temperature sensor doesn’t work, the indoor fan and the indoor air direction board motor works synchronically. High speed airflow, cooling, outdoor system on, etc, will send the ambient temperature 30 centigrade and coil temperature 16 centigrade information to the outdoor system. Test operation The defrost protection of the evaporator doesn’t work. The temperature control doesn’t work. The test operation will be finished in 30 minutes. The test operation can be stopped by the relative commands from the remote control. 7.1.11 Low load protection control In order to prevent the frosting of the indoor heat interaction device, the outdoor system will be stopped if the indoor heat interaction temperature is below 1℃ centigrade for 5 minutes, but the fan will continue to operate. The outdoor system will be started again when the heat interaction temperature is above 9 centigrade and the system has been stopped for 3 minutes. The malfunction will be stored in the malfunction resume and will not be revealed 17 Domestic air conditioner Functions and Control 7.1.12 High load protection control The outdoor system will be stopped if the coil temperature is above 63℃ for 2 minutes. The indoor fan will be controlled by the thermostat. The outdoor system can be restarted when the coil temperature is below 45℃ and the system has been stopped for 3 minutes. The malfunction will be stored in the malfunction resume and will not be revealed. 7.1.13 Abnormal operation of indoor system When the outdoor system operates, if the indoor system operation differs from the outdoor system, the abnormal operation malfunction will be reported. 10s after the report, the indoor system will be closed. Outdoor system mode Indoor system mode conflicts cooling heating yes cooling cooling no cooling airflow no heating heating no heating airflow yes heating cooling yes 7.1.14 Malfunction list resume. Nothing is presented if there is no code list. The malfunction display will automatically finish in 10 seconds. The remote control only receives the signals for stop. According to the signals, the malfunction resume presentation finishes. The resume restores after the power supply restores. 7.1.15 Abnormality confirmation approaches 1. indoor temperature sensor abnormality: Under the operation, the normal temperature ranges from 120 degree to -30 degree. When the temperature goes beyond this range, the abnormality can be confirmed. If the temperature goes back into the range, the system will automatically resume. 2 .indoor heat interaction sensor abnormality: Under the operation, the normal temperature ranges from 120 degree to -30 degree. When the temperature goes beyond this range, the abnormality can be confirmed. If the temperature goes back into the range, the system will automatically resume. 3 .indoor malfunction: Out door malfunction: When the indoor system receives the outdoor malfunction codes, it will store the code into E2 for the malfunction list resume. The indoor system will continue to operate according to the original status, the malfunction code will not be revealed or processed. 4. transmission abnormality: If the indoor system can’t receive the outdoor system for 8 minutes, the communication abnormality can be confirmed and reported and the outdoor system will be stopped. 18 Domestic air conditioner Functions and Control 7.1.16 Single indoor system operation * Enter condition: First, set the high speed airflow and 30 centigrade set temperature, then press the dormant keys for 6 times within 7 seconds, the system will feedback with 6 rings. * After the system enters the separate indoor system operation mode, the indoor system will operate according to the set mode and neglect the communication signals of the outdoor system. However, it has to send signals to the outdoor system. * Quitting condition: This mode can be quitted after receiving the quitting signal from the remote control or urgency system. The indoor system thus can quit the single operation mode. 7.1.17 Power cut compensation * Entering condition: Press dormant button 10 times within 7 second, the buzzer will ring 4 times and the present system status will be stored into the EEPROM of the indoor system. * After entering the power cut compensation mode, the processing of the indoor system should be as the followings: Remote control urgency signal: operate according to the remote control and the urgent conditions, the present status will be stored into the EEPROM of the indoor system. * Quitting conditions: Press dormant button 10 times within 7 seconds and the buzzer will ring twice. 7.1.18 Test program First, connect the test program terminal on the mainboard. Then connect the system to the power circuit. The test program will operate as follows. HV series display: The buzzer rings for one time—the signal will be sent to outdoor system for 0.5 second— the violet is sent for 0.5-- the background light turns to white—the back ground light turns to white—the background light turns to white—the background light is fully lighted for 0.5 second—LED screen lights for 0.5 second— the step-in motor fully output for 0.5 second—then the motor doesn’t output for 0.5 second—the motor fully output again for 0.5 second. The test program finishes. 7.1.19 Time cutting function: Connect the test program terminal on the mainboard after connecting the system to the power circuit. The CPU of the main control will be 60 times faster. 7.1.20 Room card function: 1、If the SW2 code chooses the room card is invalid(SW2_2 is OFF), the remote control, wire control, long-range control, room card (closed is on, disconnect is off) are effective. 2、If the SW2 code chooses the room card is valid(SW2_2 is ON), you need to insert the room card first.And then received the start signal of remote control, or wire control, or long-range control, the machine can run. 19 Domestic air conditioner Functions and Control 7.2 Value of thermistor Room sensor and Pipe Sensor Room sensor R25℃=23KΩ±2% B25℃/50℃=4200K±1% R25℃=23KΩ+2% Temp.(℃) Resistor(KΩ) Temp.(℃) Resistor(KΩ) Temp.(℃) Resistor(KΩ) -20 266.905 18 32.215 56 6.1 -19 250.866 19 30.671 57 5.87 -18 235.895 20 29.21 58 5.65 -17 221.911 21 27.828 59 5.44 -16 208.838 22 26.521 60 5.24 -15 196.609 23 25.283 61 5.04 -14 185.163 24 24.111 62 4.86 -13 174.443 25 23 63 4.68 -12 164.399 26 21.94 64 4.51 -11 154.983 27 20.94 65 4.35 -10 146.153 28 19.99 66 4.19 -9 137.87 29 19.09 67 4.04 -8 130.096 30 18.23 68 3.9 -7 122.799 31 17.42 69 3.76 -6 115.946 32 16.65 70 3.63 -5 109.51 33 15.97 71 3.5 -4 103.462 34 15.22 72 3.38 -3 97.779 35 14.56 73 3.26 -2 92.437 36 13.93 74 3.15 -1 87.415 37 13.34 75 3.04 0 82.691 38 12.77 76 2.94 1 78.248 39 12.23 77 2.84 2 74.067 40 11.71 78 2.74 3 70.133 41 11.22 79 2.65 4 66.43 42 10.76 80 2.56 5 62.943 43 10.31 6 59.659 44 9.89 7 56.566 45 9.49 8 53.651 46 8.1 9 50.904 47 8.74 10 48.314 48 8.39 11 45.872 49 8.05 12 43.569 50 7.73 13 41.395 51 7.43 20 Domestic air conditioner Functions and Control R25℃=10KΩ±2% B25℃/50℃=3700K±2% Temp.((℃)) Max.(KΩ) Normal(KΩ) Min.(KΩ) -30 165.2170 147.9497 132.3678 -1.94 1.75 -29 155.5754 139.5600 125.0806 -1.93 1.74 -28 146.5609 131.7022 118.2434 -1.91 1.73 -27 138.1285 124.3392 111.8256 -1.89 1.71 -26 130.2371 117.4366 105.7989 -1.87 1.70 -25 122.8484 110.9627 100.1367 -1.85 1.69 -24 115.9272 104.8882 94.8149 -1.83 1.67 -23 109.4410 99.1858 89.8106 -1.81 1.66 -22 103.3598 93.8305 85.1031 -1.80 1.64 -21 97.6556 88.7989 80.6728 -1.78 1.63 -20 92.3028 84.0695 76.5017 -1.76 1.62 -19 87.2775 79.6222 72.5729 -1.74 1.60 -18 82.5577 75.4384 68.8710 -1.72 1.59 -17 78.1230 71.5010 65.3815 -1.70 1.57 -16 73.9543 67.7939 62.0907 -1.68 1.55 -15 70.0342 64.3023 58.9863 -1.66 1.54 -14 66.3463 61.0123 56.0565 -1.64 1.52 -13 62.8755 57.9110 53.2905 -1.62 1.51 -12 59.6076 54.9866 50.6781 -1.60 1.49 -11 56.5296 52.2278 48.2099 -1.58 1.47 -10 53.6294 49.6244 45.8771 -1.56 1.46 -9 50.8956 47.1666 43.6714 -1.54 1.44 -8 48.3178 44.8454 41.5851 -1.51 1.42 -7 45.8860 42.6525 39.6112 -1.49 1.40 -6 43.5912 40.5800 37.7429 -1.47 1.39 -5 41.4249 38.6207 35.9739 -1.45 1.37 -4 39.3792 36.7676 34.2983 -1.43 1.35 -3 37.4465 35.0144 32.7108 -1.41 1.33 -2 35.6202 33.3552 31.2062 -1.38 1.31 -1 33.8936 31.7844 29.7796 -1.36 1.29 0 32.2608 30.2968 28.4267 -1.34 1.28 1 30.7162 28.8875 27.1431 -1.32 1.26 2 29.2545 27.5519 25.9250 -1.29 1.24 3 27.8708 26.2858 24.7686 -1.27 1.22 4 26.5605 25.0851 23.6704 -1.25 1.20 5 25.3193 23.9462 22.6273 -1.23 1.18 6 24.1432 22.8656 21.6361 -1.20 1.16 7 23.0284 21.8398 20.6939 -1.18 1.14 8 21.9714 20.8659 19.7982 -1.15 1.12 9 20.9688 19.9409 18.9463 -1.13 1.09 10 20.0176 19.0621 18.1358 -1.11 1.07 21 Tolerance(℃) Domestic air conditioner Functions and Control 11 19.1149 18.2270 17.3646 -1.08 1.05 12 18.2580 17.4331 16.6305 -1.06 1.03 13 17.4442 16.6782 15.9315 -1.03 1.01 14 16.6711 15.9601 15.2657 -1.01 0.99 15 15.9366 15.2770 14.6315 -0.98 0.96 16 15.2385 14.6268 14.0271 -0.96 0.94 17 14.5748 14.0079 13.4510 -0.93 0.92 18 13.9436 13.4185 12.9017 -0.91 0.90 19 13.3431 12.8572 12.3778 -0.88 0.87 20 12.7718 12.3223 11.8780 -0.86 0.85 21 12.2280 11.8126 11.4011 -0.83 0.83 22 11.7102 11.3267 10.9459 -0.81 0.80 23 11.2172 10.8634 10.5114 -0.78 0.78 24 10.7475 10.4216 10.0964 -0.75 0.75 25 10.3000 10.0000 9.7000 -0.75 0.75 26 9.8975 9.5974 9.2980 -0.76 0.76 27 9.5129 9.2132 8.9148 -0.80 0.80 28 9.1454 8.8465 8.5496 -0.84 0.83 29 8.7942 8.4964 8.2013 -0.87 0.86 30 8.4583 8.1621 7.8691 -0.91 0.90 31 8.1371 7.8428 7.5522 -0.95 0.93 32 7.8299 7.5377 7.2498 -0.98 0.97 33 7.5359 7.2461 6.9611 -1.02 1.00 34 7.2546 6.9673 6.6854 -1.06 1.04 35 6.9852 6.7008 6.4222 -1.10 1.07 36 6.7273 6.4459 6.1707 -1.13 1.11 37 6.4803 6.2021 5.9304 -1.17 1.14 38 6.2437 5.9687 5.7007 -1.21 1.18 39 6.0170 5.7454 5.4812 -1.25 1.22 40 5.7997 5.5316 5.2712 -1.29 1.25 41 5.5914 5.3269 5.0704 -1.33 1.29 42 5.3916 5.1308 4.8783 -1.37 1.33 43 5.2001 4.9430 4.6944 -1.41 1.36 44 5.0163 4.7630 4.5185 -1.45 1.40 45 4.8400 4.5905 4.3500 -1.49 1.44 46 4.6708 4.4252 4.1887 -1.53 1.47 47 4.5083 4.2666 4.0342 -1.57 1.51 48 4.3524 4.1145 3.8862 -1.61 1.55 49 4.2026 3.9686 3.7443 -1.65 1.59 50 4.0588 3.8287 3.6084 -1.70 1.62 51 3.9206 3.6943 3.4780 -1.74 1.66 52 3.7878 3.5654 3.3531 -1.78 1.70 53 3.6601 3.4416 3.2332 -1.82 1.74 54 3.5374 3.3227 3.1183 -1.87 1.78 22 Domestic air conditioner Functions and Control 55 3.4195 3.2085 3.0079 -1.91 1.82 56 3.3060 3.0989 2.9021 -1.95 1.85 57 3.1969 2.9935 2.8005 -2.00 1.89 58 3.0919 2.8922 2.7029 -2.04 1.93 59 2.9909 2.7948 2.6092 -2.08 1.97 60 2.8936 2.7012 2.5193 -2.13 2.01 61 2.8000 2.6112 2.4328 -2.17 2.05 62 2.7099 2.5246 2.3498 -2.22 2.09 63 2.6232 2.4413 2.2700 -2.26 2.13 64 2.5396 2.3611 2.1932 -2.31 2.17 65 2.4591 2.2840 2.1195 -2.36 2.21 66 2.3815 2.2098 2.0486 -2.40 2.25 67 2.3068 2.1383 1.9803 -2.45 2.29 68 2.2347 2.0695 1.9147 -2.49 2.34 69 2.1652 2.0032 1.8516 -2.54 2.38 70 2.0983 1.9393 1.7908 -2.59 2.42 71 2.0337 1.8778 1.7324 -2.63 2.46 72 1.9714 1.8186 1.6761 -2.68 2.50 73 1.9113 1.7614 1.6219 -2.73 2.54 74 1.8533 1.7064 1.5697 -2.78 2.58 75 1.7974 1.6533 1.5194 -2.83 2.63 76 1.7434 1.6021 1.4710 -2.88 2.67 77 1.6913 1.5528 1.4243 -2.92 2.71 78 1.6409 1.5051 1.3794 -2.97 2.75 79 1.5923 1.4592 1.3360 -3.02 2.80 80 1.5454 1.4149 1.2942 -3.07 2.84 81 1.5000 1.3721 1.2540 -3.12 2.88 82 1.4562 1.3308 1.2151 -3.17 2.93 83 1.4139 1.2910 1.1776 -3.22 2.97 84 1.3730 1.2525 1.1415 -3.27 3.01 85 1.3335 1.2153 1.1066 -3.32 3.06 86 1.2953 1.1794 1.0730 -3.38 3.10 87 1.2583 1.1448 1.0405 -3.43 3.15 88 1.2226 1.1113 1.0092 -3.48 3.19 89 1.1880 1.0789 0.9789 -3.53 3.24 90 1.1546 1.0476 0.9497 -3.58 3.28 91 1.1223 1.0174 0.9215 -3.64 3.33 92 1.0910 0.9882 0.8942 -3.69 3.37 93 1.0607 0.9599 0.8679 -3.74 3.42 94 1.0314 0.9326 0.8424 -3.80 3.46 95 1.0030 0.9061 0.8179 -3.85 3.51 96 0.9756 0.8806 0.7941 -3.90 3.55 97 0.9490 0.8558 0.7711 -3.96 3.60 98 0.9232 0.8319 0.7489 -4.01 3.64 23 Domestic air conditioner Connector Wiring diagrams 99 0.8983 0.8088 0.7275 -4.07 3.69 100 0.8741 0.7863 0.7067 -4.12 3.74 101 0.8507 0.7646 0.6867 -4.18 3.78 102 0.8281 0.7436 0.6672 -4.23 3.83 103 0.8061 0.7233 0.6484 -4.29 3.88 104 0.7848 0.7036 0.6303 -4.34 3.92 105 0.7641 0.6845 0.6127 -4.40 3.97 106 0.7441 0.6661 0.5957 -4.46 4.02 107 0.7247 0.6482 0.5792 -4.51 4.07 108 0.7059 0.6308 0.5632 -4.57 4.12 109 0.6877 0.6140 0.5478 -4.63 4.16 110 0.6700 0.5977 0.5328 -4.69 4.21 111 0.6528 0.5820 0.5183 -4.74 4.26 112 0.6361 0.5667 0.5043 -4.80 4.31 113 0.6200 0.5518 0.4907 -4.86 4.36 114 0.6043 0.5374 0.4775 -4.92 4.41 115 0.5891 0.5235 0.4648 -4.98 4.45 116 0.5743 0.5100 0.4524 -5.04 4.50 117 0.5600 0.4968 0.4404 -5.10 4.55 118 0.5460 0.4841 0.4288 -5.16 4.60 119 0.5325 0.4717 0.4175 -5.22 4.65 120 0.5194 0.4597 0.4066 -5.28 4.70 24 Domestic air conditioner Service diagnosis 8.Dimensional drawings 222 285 327 1010 79.2 354.2 9.Center of gravity 79.2 unit:mm 1010 111 327 172 533 222 Domestic air conditioner 25 Service diagnosis 10. Service Diagnosis 10.1 Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2. When a signal transmission error occurs between the indoor and outdoor units. In either case, conduct the diagnostic procedure described in the following pages. 10.2 Problem Symptoms and Measures Symptom None of the units operates Operation sometimes stops. Check Item Check the power supply. Check the indoor PCB Check the power supply. Details of Measure Check to make sure that the rated voltage is supplied. Check to make sure that the indoor PCB is broken A power failure of 2 to 10 cycles can stop air conditioner operation. Set the units to cooling operation, and compare the Equipment operates but does not cool, or does not heat (only for heat pump) Check for faulty operation temperatures of the liquid side connection pipes of the of the electronic connection section among rooms to check the opening and expansion valve. closing operation of the electronic expansion valves of the individual units. Diagnosis by service port pressure and operating Check for insufficient gas. current. Large operating Check the noise and condition. vibrations Check to make sure that the required spaces for installation installation (specified in the Technical Guide, etc.) are provided. 26 Domestic air conditioner Service diagnosis 10.3 Error Codes and Description indoor display Code indication Indoor displaying panel code indication Other display Outdoor Only For 498 and (LED1 498A display flash (Red/Green Time times) Run □On ★Flash■Off) fault description Reference Page ● Indoor and E7 Outdoor E1 E2 Indoor Malfunction E4 E14 E5 E9 F12 F1 F22 F3 F20 F19 F27 F4 F8 F21 Outdoor F7 Malfunction F6 F25 F13 F14 F11 F28 F15 F2 F23 F9 F24 F34 F35 F43 Directly display ■ ■ ★ 15 Directly Directly Directly Directly ★ ■ ■ ★ □ □ ★ □ ★ ■ □ ★ / / / / display display display display ● Trouble record □ ■ ★ 22 Trouble record Directly display Directly display □ ■ □ ■ ★ ★ ■ ★ ★ 21 1 2 Directly display ★ ★ ■ 3 Directly display ■ ★ ■ 4 Trouble record ■ ★ □ 5 Trouble record ■ ★ □ 6 Directly display ■ ★ ■ 7 Directly display ■ ★ ■ 8 Trouble record Directly display ■ □ ★ □ □ ★ 9 10 Directly display ■ ★ ■ 11 Directly display □ ★ ■ 12 Directly display ★ □ ■ 13 Trouble record Trouble record Directly display Directly display ■ ■ ■ ■ ★ ★ ★ ★ □ □ ■ ■ 16 17 18 19 Trouble record ■ ★ □ 20 Trouble record ■ ★ □ 24 Trouble record ■ ★ □ 25 / ■ ★ / ★ □ ★ ■ 26 27 37 38 46 Trouble Trouble Trouble Trouble / record record record record ● ● ★ ■ ■ ● 27 Communication fault between indoor and outdoor units Indoor temperature sensor failure Indoor coil sensor failure Indoor eeprom failure Indoor fan failure Internal unit antifreeze protection Internal unit overload Eeprom failure IPM failure AC current overcurrent protection Communication error between module board and main PCB board High pressure protection Power over/under voltage protection Compressor stall / press instantaneous stop Compressor discarging temperature protection Abnormal of DC motor Abnormal of piping sensor Suction temperature sensor failure Abnormal of outdoor ambient sensor Abnormal of compressor discharge sensor Lack of refrigerant 4-way valve reverse failure Compressor jam (only for spdu) Module PWM select circuit error Outdoor terminal block temperature protection Instantaneous over-current protection of the compressor Compressor U-phase overcurrent Compressor V-phase overcurrent Compressor W-phase overcurrent Module reset CT disconnection Outdoor coil protection Compressor driver board failure Model matching abnormality Page.36 Page.28 Page.28 Page.29 Page.30 / Page.39 Page.29 Page.31 Page.32 Page.33 / Page.34 / Page.35 Page.30 Page.28 Page.28 Page.28 Page.28 / / Page.38 Page.38 / Page.32 Page.32 / / / / / Domestic air conditioner Installations 10.3.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure Outdoor display LED1 flash 10 times:Defrost temperature sensor failure LED1 flash 11 times:Suction temperature sensor failure LED1 flash 12 times:Ambient temperature sensor failure LED1 flash 13 times:Discharge temperature sensor failure Method of Malfunction Detection Malfunction Decision Conditions The temperatures detected by the thermistors are used to determine thermistor errors When the thermistor input is more than 4.92V or less than 0.08V during compressor operation. Note: The values vary slightly in some models Supposed Causes ■ Faulty connector connection ■ Faulty thermistor ■ Faulty PCB Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. Check the connector connection. NO Correct the connection Is it normal? Yes Thermistor resistance check NO Replace the thermistor Is it normal? Yes Replace the indoor unit PCB Thermistor resistance check method: Remove the connector of the thermistor on the PCB, and measure the resistance of thermistor using tester.The relationship between normal temperature and resistance is shown in the value of indoor thermistor. 28 Domestic air conditioner Installations 10.3.2 EEPROM abnormal Indoor Display E4: Indoor EEPROM error Indoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times Method of The Data detected by the EEPROM are used to determine MCU Malfunction Detection Malfunction When the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed ■ Faulty EEPROM data Causes ■ Faulty EEPROM ■ Faulty PCB Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Replace the indoor or outdoor mainboard. 29 Domestic air conditioner Installations 10.3.3 Indoor fan motor malfunction Indoor Display E14 Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation Detection when the detected rotation feedback signal don’t received in 2 minutes Malfunction Decision Conditions Supposed Causes Operation halt due to breaking of wire inside the fan motor. Operation halt due to breaking of the fan motor lead wires. Detection error due to faulty indoor unit PCB. How to check Fan Motor (DC) 1. Check connector connection. 2. Check motor power supply voltage output (pins 1-4). 3. Check motor control voltage (pins 4-5). 4. Check rotation command voltage output (pins 4-6). 5. Check rotation pulse input (pins 4-7). Notes: the a/c is electrifying, don’t pull out or insert the terminals of the motor, else the motor would be damaged. Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. 10.3.4 Outdoor DC fan motor fault Outdoor display LED1 flash 9 times Method of DC fan motor is detected by checking the fan running condition and so on Malfunction Detection Malfunction when the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed ■ DC fan motor protection dues to the DC fan motor faulty Causes ■ DC fan motor protection dues to faulty PCB Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. 30 Domestic air conditioner Installations Check whether Terminal on the outdoor mainboard is well inserted. NO it is normal Reinsert the terminals YES Electrify the machine again and turn it on in the Cool state with the remote controller. check whether the motor could run. The motor and outdoor pcb are well YES NO R emove fan m otor af te r s witch off the power.Measure the resistances between black line (0V) and red line( 310V),between black line(0V) a nd w hi te l in e ( 1 5 V ) of th e fan motor . The resistances are greater than 40KΩ YES NO the resistances between 0V and 310V,between 0V and 15V of the fan terminal of outdoor pcb are greater than 10MΩ. YES The module pcb is damaged, replace it with a new one. The motor of the outdoor unit is damaged and needs replacing. NO The outdoor pcb is damaged, replace it with a new one. 10.3.5 IPM protection Outdoor display: Method of Malfunction Detection Malfunction Decision Conditions LED1 flash 2 times IPM protection is detected by checking the compressor running condition and so on ■ The system leads to IPM protection due to over current ■ The compressor faulty leads to IPM protection ■ circuit component of IPM is broken and led to IPM protection 31 Domestic air conditioner Installations Supposed Causes ■ IPM protection dues to the compressor faulty ■ IPM protection dues to faulty PCB of IPM module ■ Compressor wiring disconnected Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. Electrify the machine again and turn it on with the rem ote controller ,If ma lfunctions are reported before or upon the compressor being started up. Test IPM module resistance between P and U,V,W . Then test IPM module resistance between N and U,V,W. The resistances range are between 1MΩ with 10MΩ.and they are similar. YES YES NO NO IPM Mod ule is damaged and needs replacing. The com pressor is started nor mally , but malfunctions are reported after it has run for some time. 1、The system may have been over(like,capillary clogging or electronic expansion valve faulty ) or under charged with gas, which can be judged through the pressure of the measuring system. 2、The shaft of compressor is seized and the compressor needs replacing. 10.3.6 Over-current of the compressor Outdoor Display: LED1 flash 3 or 24 or 25 times Method of Malfunction Detection The current of the compressor is too high Malfunction Decision Conditions when the IPM Module is damaged or the compressor is damaged. power supply voltage is too low or too high Supposed Causes Troubleshooting ■ Faulty IPM Module ■ Faulty compressor ■ Faulty power supply * Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. 32 Domestic air conditioner Installations Electrify the machine again and turn it on YES with the remote controller, If malfunctions IPM Module is damaged and are reported before or upon the compressor needs replacing. being started up, NO The compressor is started normally, but Yes malfunctions are reported after it has Repair the power supply run for some time. Check the power supply is too low or too high NO NO The system may have been over or under charged with gas, which can be judged through the pressure of the measuring system. 10.3.7 The communication fault between IPM and outdoor PCB Outdoor display: LED1 flash 4 times Method of Malfunction Detection Communication is detected by checking the IPM module and the outdoor PCB Malfunction Decision Conditions ■ The outdoor PCB broken leads to communication fault ■ The IPM module broken leads to communication fault Supposed Causes Troubleshooting ■ The outdoor PCB is broken ■ The IPM module is broken ■ Communication wiring disconnected * Caution Be sure to turn off power switch before connect or disconnect connector, parts damage may be occurred. 33 or else Domestic air conditioner Installations 10.3.8 Power Supply Over or under voltage fault Outdoor display: LED1 flash 6 times The power supply is over voltage Method of Malfunction Detection An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. Malfunction Decision Conditions An voltage signal is fed from the voltage detection circuit to the microcomputer Supposed Causes ■ Supply voltage not as specified ■ the IPM module is broken ■ the outdoor PCB is broken Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. Electrify the machine again and turn it on with the remote controller. Check whether the compressor is started normally Yes Is it ok? Maybe there is some disturbance No Yes Test the outdoor power supply Change the IPM module (+310VDC) with a multimeter. check whether the power is >150 V or <390V? NO Yes Change the IPM module ~230 is ok? NO This question may be caused by the power. Repair the power supply. 34 Domestic air conditioner Installations 10.3.9 Overheat Protection For Discharge Temperature Outdoor display: Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes LED1 flash 8 times The Discharge temperature control is checked with the temperature being detected by the Discharge pipe thermistor when the compressor discharge temperature is above 110℃ ■ Electronic expansion valve defective ■ Faulty thermistor ■ Faulty PCB Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. Electrify the machine again and turn it on with the remote controller, then measure the temperature at the exhaust temperature sensor of the compressor on the outdoor unit 1) The cryogen may have been leaked during YES The temperature exceeds 110 ℃ installation, or there may be leakage in the piping system. shortly after the 2) There may be other causes to make the exhaust machine starts up? temperature too high. NO Malfunctions occur after running for some time even though the measured temperature is below 110℃. Pull out the exhaust sensor and measure its resistance at standard temperatures according to the resistance-temperature table YES The results deviate The sensor is damaged. Replace the sensor with a new one. much? NO The outdoor mainboard is damaged and needs be replaced 35 Domestic air conditioner Installations 10.3.10 The communication fault between indoor and outdoor Indoor display outdoor display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting E7 LED1 flash 15 times Communication is detected by checking the indoor PCB and the outdoor PCB. ■ The outdoor PCB broken leads to communication fault. ■ The indoor PCB broken leads to communication fault. ■ ■ ■ ■ Communication wiring disconnected. The indoor PCB is broken. The outdoor PCB is broken. The Module PCB is broken. * Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. YES Restart the a/c and it becomes normally. The outdoor mainboard needs dehumidification. NO NO If starting up normally, but malfunction occurs again after a while The outdoor mainboard needs dedust. YES Check whether the linking cable between the indoor and outdoor is well connected or whether its core wires are well insulated or its L/N is not reversed. Reconnect the linking cable or replace the linking cable with new one. NO YES Check the indoor mainboard:only indoor YES charged. Measure the voltage between 3 and 4 of IC6 on the indoor mainboard with a multimete .And measure the voltage between CN23(C) and CN21(L) with a multimeter . (A) 36 Domestic air conditioner Installations (A) If the voltage is a constant value of 0V DC to 5V DC.Or the voltage between Communication line(red ) and N(white line) is not close to18V DC when only indoor charged. The indoor mainboard is damaged; replace it with a new one. YES NO Test the outdoor power is supply 230VAC with a multimeter when indoor and outdoor are charged. NO Check the cable between outdoor and power YES NO LED2 light of the outdoor The module pcb is damaged, replace it with a new one. YES Led1 light YES Measure the voltage Between 3 and 4 of IC9 on the Outdoor mainboard with a Multimete . The voltage is a constant value of 0V DC to 5V DC NO Remove fan motor after switch off the power and restart the a/c ,the led 1 becomes light or flash. The outdoor pcb is damaged, replace it with a new one. The outdoor pcb is well,and then check the cable NO YES YES Fan motor is damaged,replace it with a new one. NO Test the fan motor terminal resistance between pin 310V and 0V,or pin15V and 0V of CN22 are close to 0mΩ with a multimeter after switch off the power . Remove the connection cable between CN23 of outdoor pcb and CN10 of module pcb,The led1 becomes light or flash. NO YES The module pcb is damaged, replace it with a new one. NO YES The outdoor pcb is damaged, replace it with a new one. 37 Domestic air conditioner Installations 10.3.11 Loss of synchronism detection Inverter Outdoor Display side current detection is abnormal LED1 flash 18 times LED1 flash 19 times Method of Malfunction Detection The position of the compressor rotor can not detected normally Malfunction Decision Conditions when the wiring of compressor is wrong or the connection is poor; or the compressor is damaged Supposed Causes ■ Faulty The wiring of compressor ■ Faulty compressor ■ Faulty PCB Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. NO Within 3 minutes after the machine is 1. The wiring of compressor is incorrect or the connection is poor; supplied with power and turned on with 2. The compressor is damaged the remote controller, check whether the compressor can start up YES YES At first, the compressor start up ,soon the IPM Module is damaged and needs compressor stopped with the LED1 on the outdoor PCB blinks(1Hz)19/18 times replacing. Malfunction unsolved the Maybe there is some disturbance Malfunctions exist also, the compressor is damaged replace a new one 38 Domestic air conditioner Table of Contents 10.3.12 High work-intense protection Outdoor display LED1 flash 21 times Method of Malfunction Detection High work-intense control is activated in the heating mode if the temperature being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Decision Conditions Activated when the temperature being sensed by the heat exchanger rises above 65℃ twices in 30 minutes. Supposed Causes Troubleshooting ■ Faulty electronic expansion valve ■ Dirty heat exchanger ■ Faulty heat-exchange sensor ■ Insufficient gas * Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. Electrify the machine again and turn it on with the remote controller, check whether the wind temperature is below 65℃ The malfunction is reported YES 1 、 Check room temperature and pipe temperature sensor. after the machine has run 2、the temperature monitoring circuit for some time? of the indoor mainboard NO The indoor unit blows poorly YES due to blocked filters or poor 1) Clean the filters 2) Reinstall the fan. condition of the fan? NO Use some tools to measure the pressure of system, 39 Domestic air conditioner Table of Contents 11. Wiring diagrams 11.1 INDOOR UNIT BL W R WIRED CONTROLLER WIFI MAG SWITCH SWITCH SW1/CN14 UP-DOWN STEPMOTOR LEFT-RIGHT STEPMOTOR CONDENSER 40 Domestic air conditioner Circuit diagrams 11.2 Circuit Diagrams R3 2K R10 10K +5V 1 2 3 4 C11 IC1 100nF A0 VCC A1 WP A2 SCL GND SDA M24C04 C1 100nF RST EEP ROM 2K P1 2SA1037AK R11 R23 10K R30 +5V 10K 8 7 6 5 R9 R45 560Ω wp R66 R29 10K 10K +5V JP3 1 2 3 4 5 TJC 8-05 E 7B 6B 5B 4B 3B 2B 1B +12V R82 220Ω-0805 COM 7C 6C 5C 4C 3C 2C 1C E 7B 6B 5B 4B 3B 2B 1B 8 7 6 5 4 3 2 1 +5V R54 10K 2 R118 R33 2 +5V XT1 JP1 2 1 TJC 8-02 560ΩSCL 560ΩSDA 1 +5V LED1 DS3 R40 10K R56 1K 3-5-SW 3-29-TD 3-20-FLZ FJ-pwm MODE RST DS1 DS2 DS3 10K 1K TLP 421 USTEP _B USTEP _C USTEP _D LS TEP _A LS TEP _B LS TEP _C LS TEP _D R5 R2 1 2 3 4 5 6 7 8 9 R36 1K 10K 10K R64 10K JP4 4 3 2 1 TJC 8-04 P120/AN19 P43 P42/TI04/TO04 P41/TI07/TO07 P40/TOOL0 RESRT P124/XT2 P123/XT1 P137/INT0 P122/X2 P121/X1 REGC VSS EVSS0 VDD EVDD0 +5V FJ-fb R60 +5V 390Ω 5267-04A TLP 421 IC7 1nF C14 R 39 C16 100nF +5V zj 10 1M IC8 C 15 100nF 11 8 C 38 1uF 12 M00G53(8M 0.5% BUZZ8 7 C STLS C37 13 6 DSTEP _A 14 E2 5 DSTEP _B TVS1 1nF15 C43 C6 4 DSTEP _C 5V/400W 100nF 16 3 DSTEP _D 100nF +5V 2 USTEP _A 100uF-16V PTVS 5V0S1UR 1 R50 2K +12V 9 10 11 12 13 14 15 16 COM 7C 6C 5C 4C 3C 2C 1C C10 100nF IC12 ULN2003A +12V 9 10 11 12 13 14 15 16 IC3 R59 10K 4.7uF-50V-105℃ E14 E15 47uF-50V-105℃ C17 10nF R57 10KR68 +15V +15V R58 2.7K +310V 10nF/630V C36 ULN2003A-贴片 CN9 7 6 5 4 3 2 1 B5P7-XH +5V R53 R93 NetLabel241 NetLabel240 NetLabel3 R94 100ΩRST 1K 100ΩMODE +5V C24 R88 10K 10nF R108 10K R98 100Ω IR LS TEP _D SWITCH Nettx Netrx ROOM PIPE C29 10nF R92 N3 2K C3 R24 R25 10nF 1K 1K R27 R28 4-1971798-1- 4.7uF-1206 +5V 4.7uF-1206 10K +5V R49 1K +5V DS1 R86 DS2 R103 20K R62 10K R106 R43 10K N2 27Ω-0805 10K 4.7K KRC119S R38 10K PIPE ROOM R102 CN6 4 3 2 1 C30 +5V 5 6 7 8 C31 SW2 100Ω 100Ω 4 3 2 1 R6 R16 100Ω 100Ω 100Ω 1K SW1 TS VC-1 R73 NDI-04H DIGL DIGH R18 R17 R21 R31 C19 1nF R34 C21 N1 2SD1781KT146R C12 100nF R99 CN51 2K 1 2K 2 R100 B2B-XH- A 10nF 1K SER RCK SRCK IR R101 10K 10K REMOTE_TX +5V R95 REMOTE_RX 3-23-LINE-RX 3-25-LINE- TX PIPE REMOTE_RX REMOTE_TX IC2 R5F100LE 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 FK C27 100nF 1 2 B2B-XH- A-CN14 2SD1781KT146R R1 10K R4 1K C5 100nF +5V SWI TCH R97 100ΩNettx Netrx AN18/P147 P146 scl00/TI07/TO07/P10 sda00/TI06/TO06/RXD0/P11 TI 05/TO05/INT5/TXD0/P12 sdaa0/TI04/TO04/TXD2/P13 scla0/sda20/TI03/TO03/RXD2/P14 scl20/TI02/TO02/P15 (R XD0)/INT5/TO01/TI01/P16 (TXD0) /TO02/TI02/P17 PCLB UZ1/P55 P54 (INT11)/P53 (INT10)/P52 INT2/P51 INT1/P50/sda11 FJ-pwm CN34+5V 1 GND 2 TX 3 RX 4 R37 10K 10K 10K R42 2 10K 2 +5V 10K BM(ad) 25/35 A/B C2 100nF +5V 1 R109 J1 1 1K J2 C28 C20 R 104 2K 2K 2K +5V R69 R7 CN7 1 COM3 2 COM2 E1 3 +5V 4 GND 100uF-16V 5 SER 6 RCK 7 SRCK 8 IR B8B-PH-K-S- +12V 10K RLS 4148 D16 D15 CN36 3 RLS 4148 2 1 B3B-XH- A R35 10K R96 R8 100nF 100nF Domestic air conditioner 41 3 1 64 FJ-fb 63 NetLabel238 62 3-1-N 61 60 3-41-COMM_TX 59 3-40-COMM_RX 58 zj 57 NetLabel239 56 ROOM 55 BM(ad) 54 25/35 53 A/B 52 NetLabel243 51 50 49 beep0/INT6/P140 P60/SCLA0 beep1/INT7/P141 P61/SDAA0 TI00/P00 P62 TO00/P01 P63 TXD1/AN17/P02 P31/INT4/TI03/TO03/beep0 sda10/RXD1/AN16/P03 P77/INT11/TXD2 SCL10/SCK10/P04 P76/INT10/RXD2 P130(out) P75/INT9/scl01 AVREFP/AN0/P20 P74/INT8/sda01 AVREFM/AN1/P21 P73/KR3 AN2/P22 P72/KR2 AN3/P23 P71/sda21 AN4/P24 P70/KR0/scl21 AN5/P25 P06/TI06 AN6/P26 P05/TI05 AN7/P27 P30/INT3/scl11 SCL 17 SDA 18 19 wp 20 NetLabel242 21 BUZZ DSTEP_A 22 DSTEP_B 23 DSTEP_C 24 DSTEP_D 25 USTEP_A 26 USTEP_B 27 USTEP_C 28 USTEP_D 29 LSTEP_A 30 LSTEP_B 31 LSTEP_C 32 BUZZ1 PKM13EPY- 4002 5 4 3 2 1 CN11' B5B-XH- A- +12V CN11 12V 5 4 A 3 B 2 C 1 D B5B-PH-K-S- B10B-PH-K-S +12V CN5 12V CN5' 10 A 1 9 B 2 8 C 3 7 D 4 6 5 5 12V A 4 B 3 C 2 D 1 B5B-PH-K-S Circuit diagrams 11.2 Circuit Diagrams 220-L 220-N NTC1 SCK084R72 D7 +310V 1N5399(1500mA/1000V) D6 D9 +310V E7 C002 104-630VDC IC9 A6059H D21 1A/1000V D19 1A/1000V C23 R78 47K/2W R61 1.5Ω-1/2W D20 C013 C014 1 3 4.7nF/250V4.7nF/250V 4 T1 5 6 D206 FR 106(1A-600V-500ns) 102/1000V C009 R019 47uF-50V-105℃ E8 CY1 3000mA/200V CY6 E9 C41 100nF R51 100K R202 10Ω-2512 R203 ZD001 R206 270-2W N001 KTC 8050 C35 100nF TPS5402 BOOT PH Vin GND EN COMP SS VS ENSE IC5 C13 10nF 1 2 3 4 100-1206 R011 100-1206 ZD003 1N4742A(12V-1W) R004 2.2K R205 560 +12V 12V-900mA R209 100Ω-1206 100nF E204 C32 1000uF-25V-105℃ R80 1.5K E5 LC1 BLM21PG600SN1D +12V 1N4742A(12V-1W) 220-N 220-L TLP 421 IC 10 4.7nF-250VAC 4.7nF-250VAC C010 1nF ZD202 7 R77 47Ω-1/2W TR A-SRW 19ES-X58V013/BCK- 6-FE-1901H 10-120612V/1A-15V D008 FR106(1A-600V-500ns) CX2 100nF/275V L1 LB 2271(32mH-0.35A) CY5 CN27 1 22uF-50V-105℃ 1N4746A(18V-1W) 8 7 6 5 10uH-2.5A L2 C39 10pF +5V E6 1uF C42 100nF C53 470uF-25V-105℃ C40 220pF R76 22Ω R71 200K D13 100nF C7 15V-100mA +15V MBR1100(1A-100V) C26 220pF R65 R79 R81 1% 1% 1% Domestic air conditioner 42 D8 1N5399(1500mA/1000V) CN52 1 CN17 1 D250 FUSE1 T3.15A 250V 4 TVR 14621*620V 1 L 220V_L BALCK ~220VAC CN21 3 100uF/450V 2.2nF-250VAC CY4 D/ST D/ST NC VCC S BR GND FB 1 2 3 4 2 RV1 L1 220V_N 2.2nF-250VAC 470uF-25V-105℃ 8 7 6 5 10nF/630V 470nF/275V 1N5399(1500mA/1000V) CN21' 1 D250 CX1 1N5399(1500mA/1000V) Circuit diagrams 11.2 Circuit Diagrams 3-41-COMM_TX R90 4.7K +5V R13 330 N5 2SD1781KT146R IC4 IC6 TLP 851/PC851 C8 100nF-50V R12 E4 1N4007(1000mA/1000V) D11 R14 47K-3W R15 L D4 +12V RLS 4148 +12V D5 RLS 4148 +12V D10 0Ω RLS 4148 L1 RED 1 ION CON3 1 ION CON2 CON1 1 K2 OJE-SS (H)-112L(D) 220V_N K3 OJE-SS (H)-112L(D) L 220V_N K1 OJE-SS (H)-112L(D) COMM N1 K5 OJE-SS (H)-112L( D) 220V_N Domestic air conditioner 43 L1 47K-3W ZD4 1N4746A(18V-1W) D171N4007(1000mA/1000V) 220V_N R55 +12V 4 N1 CN23' 1 D250 CN23 16 15 14 13 12 11 10 9 3 R22 2K-1/4W R26 COMM 1C 2C 3C 4C 5C 6C 7C COM IC11 ULN2003A 1B 2B 3B 4B 5B 6B 7B E 4 100K-1/4W 100uF-50V-105℃ CY3 2.2nF-250VAC 2K-2W 1K 1K R44 R46 1K 1K R63 R47 1 2 3 4 5 6 7 8 D18 3 R91 TLP 421 +5V 3-20-FLZ 3-29-TD 3-5-SW 3-1-N +12V 4 D12 10K 1N4007(1000mA/1000V) R116 1K 3-23-LINE-RX C33 100nF 3 R20 R19 10K +12V R112 10nF C25 2SD1781KT146R R117 N4 R115 10K 3-25-LINE- TX RLS 4148 2 4.7K +12V 10K R113 R111 10K 27Ω-0805 N6 KRC119S 4.7K 10K 1 3 2 4 1 1 2 2 1 C9 1K 1nF D25 RLS 4148 D26 C34 1nF RLS4148 3-40-COMM_RX CN2 +12 4 GND 3 SIG 2 1 B4BXH A CONTR OLLER WIRED Remove of front panel Indoor unit Step Procedure ● 1.Features 2.Remove the front panel ● 1 Hold the front panel by the tabs on the both sides and lift it until it stops with a click. Loosen the screw and lift up the casing cover 2 Loosen the screw and lift up the control box cover ● 1 Points Step 3 Procedure Points Pull the wires out of the control box and then release the pivots on both sides of the unit to remove the front panel. ● Remove the air filters and horizontal flap ● Step 1 Procedure Points Lift the first air filter upwards slightly and then pull it out downwards 2 Lift the second air filter upwards slightly and then pull it out downwards ● Remove the horizontal flap ● 1 ■ The horizontal flap is Double ■ First release the down of the horizontal flap and then release the up of the horizontal flap Release the side of pivot and then release the Center of the pivot. Bend the horizontal blade slightly and remove it. ● 2 Remove the casing Step 1 2 Procedure Release the screw covers(3EA) Points ■ lift up the screw covers and then release them. Loosen the marked screw (7EA) ● 3 Step Procedure Points HOLE (4EA) 3 ■When assembling, install the front grille horizontally so as not to stuff the flap inside. ■When assembling, make sure the four hooks are caught properly. Release the marked hooks (4EA) and then Pull the front grille out Horizontally and remove it ● ● HOOK (4EA) ● 4 Release stepping motor and the control box Step 1 Procedure Loosen the stepping motor screws (4EA) and then remove the stepping motor ● Remove the control box ● 1 Loosen the control Box screws (1EA) and then pull it. ● 5 Points Removal of Heat Exchanger Step 1 2 Procedure Loosen the marked screws(2EA) Pull mounting plate and heat exchanger bracket, and then release them. 3 Release the fixture plate from the base Frame hook and remove it. 4 Loosen the screws ● 6 Points Step 5 Procedure Remove the heat Exchanger Remove Fan motor 1 Loosen the marked screws(4EA) and release the cover of fan motor 2 Loosen the marked screw (1EA) and remove fan motor 3 Lift up the fan and remove it ● 7 Points Generalny Dystrybutor Systemów Klimatyzacji i Pomp Ciepła HEIKO REFSYSTEM Sp. z o. o. ul. Metalowców 5 86-300 Grudziądz +48 723 737 378 www.heiko.pl ">

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Key features
- Super quiet operation
- Long distance air supplying
- Heating to -15℃
- Sleep mode
- Automatic operation
- Cooling mode
- Dehumidifying mode
- Heating mode
- Strength mode
- Mute mode
Frequently asked questions
The temperature control range in cooling mode is 16 ---30℃.
The device automatically determines the running mode based on the room temperature and switches between cooling, fan, and heating modes as needed. Switching between cooling and heating requires a 15-minute delay.
In cooling mode, the airflow speed can be set to high, medium, low, or automatic. The automatic mode selects the speed based on the temperature difference between the room temperature and the set temperature.