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Service diagnosis

43 Domestic air conditioner

10.3.10 The communication fault between indoor and outdoor

Indoor display

ƵƵƾ

E7

outdoor display LED1 flash 15 times

Method of Communication is detected by checking the indoor PCB and the outdoor PCB.
Malfunction
Detection

Malfunction

Ŷ

The outdoor PCB broken leads to communication fault.

Decision

Ŷ

The indoor PCB broken leads to communication fault.

Conditions

Supposed

Ŷ

Communication wiring disconnected.

Causes

Ŷ

The indoor PCB is broken.

Ŷ

The outdoor PCB is broken.

Ŷ

The Module PCB is broken.

Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else

parts damage may be occurred.

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Summary of Contents for 1U68REMFRA

Page 1: ...l 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 WARNING 2018 Qingdao Haier Air Conditioner General corp Ltd All rights reserved Unauthorized cop...

Page 2: ...ns 7 3 Sensors list 8 4 Piping diagrams 9 5 Operation range 10 6 Printed circuit board connector wiring diagram 11 7 Functions and control 8 Dimensional drawings 9 Center of gravity 10 Service diagnosis 11 Performance and curves diagrams 12 Circuit diagrams 15 48 30 29 29 56 ...

Page 3: ...me explanation 1 U 6 8 R E M F A R The maximum combination number Type of outdoor unit U normal type Nominal cooling capacity 24000BTU h Platform of outdoor units 2p 2p platform Europe Version number Heat pump R32 refrigerant DC inverter Apply toT1 220 240V50HZ 1ph 1 ...

Page 4: ...cket before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If 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 If the refrigerant gas discharges during the repair work do not touch the discharging refri...

Page 5: ...e welder in an enclosed room can cause oxygen deficiency 1 2 2 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 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 equ...

Page 6: ...s other than the specified refrigerant R 410A R22 in the refrigerant system If air enters the cooling system an excessively high pressure results causing equipment damage and injury If 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 If the leak cannot be located and the repair ...

Page 7: ...operly and if the connections at the soldered or crimped terminals are secure Improper installation and connections can cause excessive heat generation fire or an electrical shock If the installation platform or frame has corroded replace it Corroded installation platform or frame can cause the unit to fall resulting in injury Check the grounding and repair it if the equipment is not properly grou...

Page 8: ...cks Caution Caution A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get an unexpected result or has to restart part of a procedure Warning Warning A warning is used when there is danger of personal injury Reference A reference guides the reader to other places in this binder or in this manual where he she will find additional in...

Page 9: ...ound level 52 e r u s s e e p d n u o S 65 B d r e w o p d n u o S ELECTRICAL SPECIFICATIONS g n i t a e h g n i l o o c 9 3 9 4 A t n e r r u c g n i n n u r l a n i m o N Maximum running current A 12 5 13 5 0 1 1 0 A t n e r r u c g n i t r a t S TECHNICAL SPECIFICATIONS PARTS g n i t a e h g n i l o o c Compressor r o s s e r p m o C y r a t o R e p y T TVB220FAEMC l e d o M 1370 W t u p t u o ...

Page 10: ... Additional Charge of Refrigerant g m 20 Intemational Protection degree IP 24 Note the data are based on the conditions shown in the table below cooling heating Piping length Indoor 27 DB 19 WB Outdoor 35 DB 24 WB Indoor 20 DB Outdoor 7 DB 6 WB 5m 3 Sensors list type Description Qty Ambient sensor Its used for detecting temperature of outdoor side 1 Defrosting sensor Its used for controlling outdo...

Page 11: ...Pinping diagrams Domestic air conditioner 4ˊPiping diagrams 9 EEV EEV ...

Page 12: ...Operation range 10 Domestic air conditioner 5 Operation range 10 0 21 27 35 20 40 60 43 20 40 ...

Page 13: ...l board and the module board 9 CN25 CN28 Connector to N and P of the module board 10 CN36 Connector for communicate between indoor and outdoor unit 11 CN15 Connector for electric expansion valves PCB 2 Module PCB For 1U18JEFFRA 1U24REFFRA 1U24REBFRA CN10 Connector for the DC power 5V and 15V form the control PCB CN11 Connector for communicating between the control board and the module board P CN8 ...

Page 14: ...Printed circuit board connector wiring diagram 12 Domestic air conditioner PCB 1 CN6 CN7 CN1 CN2 CN25 CN28 CN23 CN24 CN9 CN10 CN36 CN3 CN11 CN15 CN47 CN17 CN22 ...

Page 15: ...Printed circuit board connector wiring diagram 13 Domestic air conditioner PCB 2 CN4 CN3 CN10 CN6 CN5 CN8 CN11 CN9 CN7 CN1 CN2 ...

Page 16: ... CAPACITOR EVEN AFTER PLUG OFF DANGER OF ELECTRIC SHOCK CN7 CN6 AC N OUT AC L OUT BR OR B BL OR W BL OR W BR OR B Note The dotted parts are optional The 1 and the 2 cannot exist at the time but must keep one of them B Black W White R Red Y G Yellow Green BR Brown OR Orange BL Blue GR Gray THE CAPACITOR RETAINS HIGH VOLTAGE EVEN AFTER THE PLUG OFF FOR YOUR SAFETY BE SURE TO WAIT AT LEAST5 MINUTES A...

Page 17: ...d every determined frequency for protection should be prior to the calculated frequency 7 1 1 3 The speeds of increasing or decreasing the frequency of the compressor The speed of increasing or decreasing the frequency rapidly 1 1HZ second The speed of increasing or decreasing the frequency slowly 2 1HZ 10seconds 7 1 1 4 The calculation of the compressor s frequency Refrigeration dehumidification ...

Page 18: ...f the complete appliance which are affected by the environment but also the maximum ability limitation of the system When the starting ability is not the maximum its maximum frequency limitation is calculated by the following equations The frequency limitation which is affected by the temperature and under the condition of actual ability the actual running system ability the maximum frequency whic...

Page 19: ... controled according to the ambient temperature Tao ć Tao 22ć 22ć Tao 28ć Taoı29ć Refrigeration dehumidification 18K 24K 2nd level 2nd level 3rd level 4th level 5th level 6th level Tao ć Tao 10ć 10ć Tao 17ć Taoı17ć Heating 5th level 6th level 3th level 5th level 3rd level 2nd level After 3 minutes the compressor is controled according to the ambient temperature and the frequency of the compressor ...

Page 20: ... no such limitation Sensor detection methods 100 times one cycle of procedure run is one time and about 5ms detection method for each time continuously sampling for 8 times then order them and take the mean value of the middle 2 values take the mean value TTC ć 18K 24K Abnormal stop 110 110 Decreasing the frequency rapidly 1HZ second 107 105 Decreasing the frequency slowly 1HZ 10seconds 102 100 Th...

Page 21: ...compressor if the AC current is greater than 14 5A 15A 18K 24K the frequency of the compressor decreases at the speed of 1HZ second ƽDuring the starting process of the compressor if the AC current is greater than 13 5A 14A 18K 24K the frequency of the compressor decreases at the speed of 0 1HZ second ƽDuring the starting process of the compressor if the AC current is greater than 13A 13A 18K 24K t...

Page 22: ...ing heating prevent freezing Tpg_indoor is the minimum value of the effective indoor unit start it and it is in accord with the running state 11ć ice_temp_3 5 ice_temp_3 3 9ć Increasing slowly 8ć ice_temp_3 2 Keeping the frequency ice_temp_3 7ć 7ć ice_temp_2 5ć Decreasing slowly ice_temp_1 3ć Decreasing rapidly ice_temp_1 1ć Stop When Tpg_indoorǇ ice_temp_1 the frequency of the compressor decrease...

Page 23: ...5ć 50ć 3700Kf3 Temp ć Max Kȍ Normal Kȍ Min Kȍ Tolerance ć 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 10...

Page 24: ...315 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 ...

Page 25: ...4 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 ...

Page 26: ...1 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...

Page 27: ...5548 3573 4260 3049 5312 2 70 2 32 10 3933 3289 3365 7336 2877 4527 2 69 2 31 9 3699 5139 3171 3148 2716 0828 2 67 2 30 8 3480 9407 2989 2460 2564 6945 2 66 2 29 7 3276 5302 2818 6731 2422 6139 2 64 2 28 6 3085 2854 2658 8058 2289 2164 2 63 2 28 5 2906 2851 2508 9126 2163 9230 2 61 2 27 4 2738 6777 2368 3158 2046 1961 2 60 2 26 3 2581 6752 2236 3876 1935 5371 2 58 2 25 2 2434 5487 2112 5459 1831 4...

Page 28: ...6 1295 334 5542 1 95 1 80 33 381 5350 349 4341 319 7460 1 93 1 78 34 363 7176 333 5801 305 6645 1 90 1 76 35 346 8176 318 5216 292 2709 1 88 1 75 36 330 7839 304 2151 279 5286 1 86 1 73 37 315 5682 290 6199 267 4031 1 84 1 71 38 301 1254 277 6976 255 8620 1 82 1 70 39 287 4128 265 4119 244 8745 1 80 1 68 40 274 3905 253 7288 234 4118 1 78 1 66 41 262 0206 242 6161 224 4465 1 76 1 64 42 250 2676 23...

Page 29: ...0 96 75 62 3423 60 1906 58 0609 0 95 0 94 76 59 9821 57 9770 55 9885 0 92 0 92 77 57 7223 55 8552 53 9998 0 90 0 89 78 55 5583 53 8210 52 0912 0 87 0 87 79 53 4856 51 8706 50 2591 0 85 0 84 80 51 5000 50 0000 48 5000 0 85 0 84 81 49 7063 48 2057 46 7083 0 85 0 85 82 47 9835 46 4842 44 9911 0 89 0 89 83 46 3286 44 8323 43 3452 0 93 0 92 84 44 7385 43 2468 41 7672 0 96 0 95 85 43 2105 41 7248 40 254...

Page 30: ...2 23 2 12 117 15 4489 14 4506 13 5047 2 27 2 16 118 14 9968 14 0149 13 0855 2 32 2 19 119 14 5599 13 5942 12 6811 2 36 2 23 120 14 1376 13 1879 12 2909 2 41 2 27 121 13 7294 12 7955 11 9144 2 45 2 31 122 13 3347 12 4165 11 5510 2 50 2 35 123 12 9531 12 0503 11 2003 2 54 2 39 124 12 5840 11 6965 10 8617 2 58 2 43 125 12 2270 11 3545 10 5348 2 63 2 47 126 11 8817 11 0240 10 2191 2 68 2 51 127 11 547...

Page 31: ...Dimensinal drawings Domestic air conditioner 8 Dimensional drawings 9 Center of gravity 29 890 131 131 96 890 340 25 10 405 369 697 628 288 677 374 132 unit mm unit mm ...

Page 32: ...ion error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Parameter of primary electronic appliance e r u t c i p r e t e m a r a p e m a n Compressor Rated voltage 220 230V Rated current 4 8A Rated frequency 50 60HZ Fan motor Rated voltage 220 230V Rated current 0 2A Rated frequency 50 60HZ Reactor Rated voltage 220 230V...

Page 33: ...ipment operates but does not cool or does not heat only for heat pump Check for faulty operation of the electronic expansion valve Set the units to cooling operation and compare the temperatures of the liquid side connection pipes of the connection section among rooms to check the opening and closing operation of the electronic expansion valves of the individual units Diagnosis by service port pre...

Page 34: ... Outdoor EEPROM error Page 34 F1 ƶ ƾ ƾ 2 The protection of IPM Page 38 F22 ƾ ƾ Ƶ 3 Overcurrent protection of AC electricity for the outdoor model Page 39 F3 Ƶ ƾ Ƶ 4 Communication fault between the IPM and outdoor PCB Page 40 F19 Ƶ ƾ ƶ 6 Power voltage is too high or low Page 41 F4 Ƶ ƾ Ƶ 8 Overheat protection for Discharge temperature Page 42 F21 ƶ ƶ ƾ 10 Defrost temperature sensor failure Page 33 F...

Page 35: ...or input is more than 4 92V or less than 0 08V during compressor Decision operation Conditions z Note The values vary slightly in some models Supposed Ŷ Faulty connector connection Causes Ŷ Faulty thermistor Ŷ Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Thermistor resistance check method Remove the ...

Page 36: ... 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 Ŷ Faulty EEPROM data Causes Ŷ Faulty EEPROM Ŷ 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...

Page 37: ...r due to faulty indoor unit PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Check whether terminals on indoor pcb is well Electrify the machine again and turn it on in the cooling operation Measure voltage between the positions 1and 3 of Terminal CN5 on the indoor PCB the voltage is about 90 220vac check wheth...

Page 38: ...ing condition and so on Malfunction Detection Malfunction when the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed Ƶ DC fan motor protection dues to the DC fan motor faulty Causes Ƶ 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 ...

Page 39: ...Service diagnosis 37 Domestic air conditioner ...

Page 40: ... to IPM protection due to over current Decision Ŷ The compressor faulty leads to IPM protection Conditions Ŷ circuit component of IPM is broken and led to IPM protection Supposed Ŷ IPM protection dues to the compressor faulty Causes Ŷ IPM protection dues to faulty PCB of IPM module Ŷ Compressor wiring disconnected Troubleshooting Caution Be sure to turn off power switch before connect or disconnec...

Page 41: ...pply Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Electrify the machine again and turn it on with the remote controller If malfunctions are reported before or upon the compressor being started up IPM Module is damaged and needs replacing Repair the power supply The system may have been over or under charged with gas...

Page 42: ...isconnected Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred 1 Check whether Terminal CN23 and CN24 on the outdoor mainboard CN10 and CN11 on IPM module 2 Check whether the connected wire between IPM and outdoor Are they good Electrify the machine again and turn it on Check whether the voltage between 1 and 2 of Te...

Page 43: ...Supply voltage not as specified Causes Ŷ the IPM module is broken Ŷ 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 Is it ok Yes Maybe there is some disturbance NO No 230...

Page 44: ... 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 The temperature exceeds 110 ć shortly after the machine starts up 1 The cryogen may have been leaked during installation or there may be leakage in the piping system 2 There may be other causes to make the exhaust tempe...

Page 45: ...utdoor PCB Malfunction Detection Malfunction Ŷ The outdoor PCB broken leads to communication fault Decision Ŷ The indoor PCB broken leads to communication fault Conditions Supposed Ŷ Communication wiring disconnected Causes Ŷ The indoor PCB is broken Ŷ The outdoor PCB is broken Ŷ The Module PCB is broken Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connecto...

Page 46: ...Service diagnosis 44 Domestic air conditioner ...

Page 47: ...mpressor Ƶ Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Within 3 minutes after the machine is supplied with power and turned on with the remote controller check whether the compressor can start up 1 The wiring of compressor is incorrect or the connection is poor 2 The compressor is damaged At first the co...

Page 48: ...Dirty heat exchanger Ƶ Faulty heat exchange sensor Ƶ Insufficient gas 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 wind temperature is below 65ć The malfunction is reported after the machine has run for some time 1 ǃ Check r...

Page 49: ...6 5360 5054 6317 6798 6706 6370 6038 27 19 6207 6088 5914 5633 6910 7672 7460 7101 6773 30 22 6580 6440 6300 5950 7350 8050 7840 7560 7070 32 23 6895 6773 6623 6313 7917 8647 8218 7965 7447 35 24 7279 7192 6846 6491 8059 8934 8487 8262 7854 cooling value temerature table performance curves outdoor temp 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000 cooling capacity W cooling capacity and indoor...

Page 50: ... 1464 1845 2293 2591 2804 27 19 1881 1845 1792 1125 1566 2028 2441 2785 3084 30 22 1935 1894 1853 1151 1625 2077 2477 2926 3127 32 23 1970 1935 1892 1222 1751 2231 2678 3082 3294 35 24 2022 1998 1902 1256 1782 2305 2766 3197 3474 power consumption value temp table performance curves outdoor temp 100 600 1100 1600 2100 2600 3100 3600 4100 power consumption w indoor temp DB WB power consumption and ...

Page 51: ... 1949 2037 2141 20 1976 2064 2178 25 2079 2144 2287 30 2211 2385 2478 35 2429 2546 2674 38 2615 2734 2901 40 2940 3082 3234 43 3359 3484 3650 performance curves cooling discharge pressure table indoor temp 1000 1500 2000 2500 3000 3500 4000 10 15 20 25 30 35 38 40 43 discharge pressure Kpa outdoor temp DB WB cooling discharge pressure and temp curves 21 15 27 19 35 24 ...

Page 52: ...1 15 27 19 35 24 10 9 2 0 1 6 8 8 7 5 7 15 0 4 0 1 5 9 8 5 6 7 20 0 5 0 1 3 1 9 2 7 7 25 2 7 0 1 2 2 9 3 1 8 30 2 8 0 1 1 7 9 6 5 8 35 9 3 1 1 1 8 9 4 6 8 38 910 1011 1163 40 1001 1112 1279 43 1101 1201 1394 indoor temp performance curves cooling suction pressure table suction pressure Kpa cooling suction pressure and temp curves ...

Page 53: ...10 2 7 9 5 4 7 4 6 1 8 0 7 7 8 2 3 3 7 0 9 8 7 2 0 7 8 2 1 5 4 4 7 0 1 2 8 3 0 3 9 7 6 9 3 4 7 1 6 3 8 4 5 0 9 12 11 9 0 5 6 6 6 4 7 4 0 1 8 18 16 2 8 4 5 2 5 2 6 1 3 6 6 24 20 4 6 2 4 1 8 7 4 0 2 3 5 indoor temp humidity 46 heating capacity and indoor outdoor temp table performance curves heating capacity W heating capacity and indoor outdoor temp curves ...

Page 54: ... 2 8 5 6 2 9 9 4 2 2 1 8 6 8 2 2 3 7 2 5 9 5 2 7 6 9 2 6 2 4 0 5 2 4 0 4 2 12 11 2 1 0 2 9 2 8 1 1 0 7 1 18 16 5 4 5 1 4 0 4 1 4 6 2 1 24 20 0 9 0 1 1 9 9 2 9 8 indoor temp humidity 46 power consumption value temp table performance curves 0 500 1000 1500 2000 2500 3000 3500 15 10 7 8 2 1 7 6 12 11 18 16 24 20 power consumption w outdoor temp DB WB heating consumption and indoor outdoor temp curves...

Page 55: ...3 1 1 4 3 9 5 2 3 2 1 3 8 8 3 8 9 6 3 1 6 4 3 7 6 2 7 6 3 0 9 5 3 9 0 4 3 12 11 6 0 6 3 2 8 4 3 6 4 3 3 18 16 1 5 3 3 3 7 2 3 8 9 0 3 24 20 3 2 9 2 2 8 7 2 8 3 6 2 performance curves heating discharge pressure table indoor temp 1000 1500 2000 2500 3000 3500 4000 15 10 7 8 2 1 7 6 12 11 18 16 24 20 discharge pressure Kpa outdoor temp DB WB heating discharge pressure and temp curves 10 20 27 ...

Page 56: ... 5 2 3 5 2 9 4 2 1 0 7 6 1 5 6 1 1 6 7 6 3 0 8 4 8 7 4 4 7 12 11 4 0 9 4 8 8 4 4 8 18 16 1011 1051 1071 24 20 1197 1237 1257 performance curves heating suction pressure table indoor temp 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 15 10 7 8 2 1 7 6 12 11 18 16 24 20 suction pressure Kpa outdoor temp DB WB heating suction pressure and temp curves 10 20 27 ...

Page 57: ...56 Do C omestic air ircuit Diagra conditioner ams r 12 Circuit diagrams 12 1 Outdoor unit control board circuit diagrams ...

Page 58: ...58 Do C omestic air ircuit Diagra conditioner ams r 12 2 Module board circuit diagram ...

Page 59: ...57 Do C omestic air ircuit Diagra conditioner ams r ...

Page 60: ...ams Domestic air conditioner Sincere Forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China_ Http www haier com Edited by Signed by Approved by Shi Haiyan Yang Xiaodong Yang Wenjun Wu Hongjin ...

Page 61: ...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 WARNING 2018 Qingdao Haier Air Conditioner General corp Ltd All rights reserved Unauthorized copying and distribution is a violation of law Haier Group Version V...

Page 62: ...val of Outdoor panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work s t n i o P e r u d e c o r P p e t S s l e n a p e h t e v o m e R 1 1 Loosen the screws and lift the top panel and remove the handle ...

Page 63: ...e r u d e c o r p f o l a v o m e R 2 Domestic air conditioner s t n i o P e r u d e c o r P p e t S 2 Loosen the screws of the panel pull and remove the front panel ...

Page 64: ...r conditioner 2 Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the fixing screws Than lift the electrical box ...

Page 65: ...Removal Procedure 3 Removal of Fan and Fan Motor Loosen the fixing screws Remove the fan and motor 4 Domestic Air Conditioner ...

Page 66: ...Removal Procedure 4 Removal of Fan Motor Bracket and Partition Loosen the fixing screws and lift the fan motor bracket Remove the partition 5 Domestic Air Conditioner ...

Page 67: ...Removal Procedure 5 Removal of Compressor and Heat Exchanger Remove the valve plate Remove the valves and the compressor Loosen the screws and remove the heat exchanger 3 6 Domestic Air Conditioner ...

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