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SERVICE MANUALL

Type

DC Inverter 

Model

 

No.

1U71REAFRA

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

WARNING

2017 (Qingdao Haier Air Conditioner General corp. , Ltd)

All rights reserved. Unauthorized copying and distribution is a violation of law

Haier Group

Version

 

V1

 

Date

 

201

9-

4-10

Packaged

1U24REAFRA

Содержание 1U71REAFRA

Страница 1: ...empting 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...

Страница 2: ...rs 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 Conter of gravity 10 Service Diagnosis 33 11 Per...

Страница 3: ...planation 1 U 2 4 R E A F A R Type of outdoor unit U normal type The maximum combination number Nominal cooling capacity 24000Btu h EU European Union Platform of outdoor units 2P 2P platform 1 Heat pu...

Страница 4: ...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 condu...

Страница 5: ...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 appropr...

Страница 6: ...ified power cable can cause an electrical shock or fire Placing heavy items on the power cable and heating or pulling the power cable can damage the cable Do not mix air or gas other than the specifie...

Страница 7: ...an electrical shock or fire If the power cable and lead wires have scratches or deteriorated be sure to replace them Damaged cable and wires can cause an electrical shock excessive heat generation or...

Страница 8: ...attention of the reader to specific information The meaning of each icon is described in the table below 1 2 5 Using Icons List Icon Type of Information Description Note Note A note provides informat...

Страница 9: ...Sound level B d e r u s s e r p d n u o S B A 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 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 14 5 16...

Страница 10: ...g m 20 Note the data are based on the conditions shown in the table below 3 Sensors list Conversation formulae Kcal h KW 860 Btu h KW 3414 cfm m min 35 3 8 International Protection degree IP X4 Elect...

Страница 11: ...Pinping diagrams Domestic air conditioner 4 Pinping diagrams electrical expansion valve electrical expansion valve 9...

Страница 12: ...Operation range Domestic air conditioner 5 Operation range 10 0 20 16 32 10 20 15 10...

Страница 13: ...r communicate between indoor and outdoor unit 9 CN16 Connector for electric expansion valves 10 CN21 Connector for DC FAN Other Designations 1 FUSE 1 20 25A 250VAC 2 LED 1 Keep light representative no...

Страница 14: ...Connector Wiring diagrams Domestic air conditioner 12 PCB 1 CN1 CN2 CN4 CN3 CN26 CN24 CN23 CN22 CN8 CN9 CN10 CN16 CN20 CN18 CN21...

Страница 15: ...Connector Wiring Diagram Domestic air conditioner 13 CN4 CN3 CN10 CN1 CN2 CN9 CN7 CN6 CN5 CN8 CN11 PCB 2...

Страница 16: ...Domestic air conditioner Wiring diagrams 14 Connector Wiring diagrams...

Страница 17: ...requency for protection should be prior to the calculated frequency The speed of increasing or decreasing the frequency rapidly 1 1HZ second The speed of increasing or decreasing the frequency slowly...

Страница 18: ...de K Ki the number of running machines The calculation of the actual output frequency when there is no healthy airflow F F ED P K When the healthy airflow has been set F F ED P K airflow speed K healt...

Страница 19: ...way valve control see the defrosting process Four way working in other ways Under the mode of heating open the four way valve when the compressor is not started or changed to non heating mode make sur...

Страница 20: ...blowing alarm malfunction to the indoor others don t last 7 1 5 2 TC high temperature preventing control of the indoor heating unit Tpg_indoor is the highest value of the effective indoor unit start i...

Страница 21: ...accord with the running state 11 ice_temp_4 2 9 ice_temp_4 Increasing slowly 9 ice_temp_3 2 Keeping the frequency ice_temp_3 7 6 ice_temp_2 5 Decreasing slowly ice_temp_1 3 Decreasing rapidly ice_tem...

Страница 22: ...ensor Defrosting Sensor Pipe sensor R25 10K 3 B25 50 3700K 3 Temp Max K No r mal K Min K Tolerance 30 165 2170 147 9497 132 3678 1 94 1 75 155 5754 139 5600 125 0806 1 93 1 74 146 5609 131 7022 118 24...

Страница 23: ...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...

Страница 24: ...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 5 016...

Страница 25: ...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 0 978...

Страница 26: ...2 90 2 42 24 9687 0270 8074 3787 6724 1389 2 88 2 41 23 9057 2314 7564 2244 6311 6413 2 87 2 41 22 8472 2852 7089 4741 5927 0206 2 86 2 40 21 7928 7217 6647 4547 5568 2222 2 84 2 39 20 7423 3626 6235...

Страница 27: ...5 2 24 2 02 18 807 3024 723 4134 647 6580 2 22 2 00 19 766 4212 687 8205 616 7252 2 20 1 99 20 727 8172 654 1596 587 4271 2 18 1 98 21 691 3524 622 3161 559 6694 2 16 1 96 22 656 8979 592 1831 533 363...

Страница 28: ...4 8443 99 7046 94 7315 1 28 1 23 63 100 6112 95 7939 91 1253 1 25 1 21 64 96 5692 92 0553 87 6735 1 23 1 19 65 92 7088 88 4805 84 3690 1 20 1 17 66 89 0211 85 0614 81 2048 1 18 1 15 67 85 4976 81 7908...

Страница 29: ...108 20 3091 19 1582 18 0563 1 89 1 81 109 19 6899 18 5564 17 4723 1 93 1 85 110 19 0924 17 9761 16 9098 1 98 1 89 111 18 5157 17 4166 16 3680 2 02 1 93 112 17 9590 16 8769 15 8458 2 06 1 96 113 17 42...

Страница 30: ...01 8 7441 8 0495 3 05 2 84 135 9 2322 8 4993 7 8175 3 09 2 88 136 8 9824 8 2623 7 5931 3 14 2 92 137 8 7404 8 0329 7 3760 3 19 2 96 138 8 5059 7 8108 7 1660 3 24 3 00 139 8 2787 7 5958 6 9629 3 29 3 0...

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

Страница 32: ...n sometimes stops Check the power supply A power failure of 2 to 10 cycles can stop air conditioner operation Equipment operates but does not cool or does not heat only for heat pump Check for faulty...

Страница 33: ...for the outdoor model F3 4 Communication fault between the IPM and outdoor PCB F20 5 Compressor overload F19 6 Power voltage is too high or low F27 7 Compressor blocked F4 8 Overheat protection for D...

Страница 34: ...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 tempe...

Страница 35: ...Service diagnosis Domestic air conditioner 33 Method of malfunction detection Malfunction detection conditions Supposed causes Troubleshooting 10 3 2 The communitcation falu...

Страница 36: ...a multimeter If 230VAC is available but 310DC not the power module is damaged replace it with a new one No Test the outdoor power supply 230VAC and 310VDC with a multimeter The outdoor mainboard is da...

Страница 37: ...PROM abnormal E4 indoor EEPROM error Indoor Display Outdoor display F12 Outdoor EEPROM error Outdoor LED1 flash 1 times 10 10 10 10 10 10 10 10 10 3 4 Indoor AC fan motor malfunction Indoor display E1...

Страница 38: ...36 10 3 5 Outdoor DC fan motor fault Outdoor display F8 LED1 flash 9 times...

Страница 39: ...37 10 3 6 IPM protection Outdoor display Under this error please ensure the refrigerating system pressure is normal and no block then replace power module F1 LED1 flash 2 times F22 LED1 flash 3 times...

Страница 40: ...38 10 3 7 Over current of the compressor Outdoor Display F2 F23 LED1 flash 24 or 25 times...

Страница 41: ...39 10 3 8 The communication fault between IPM and outdoor PCB Outdoor display F3 LED1 flash 4 times...

Страница 42: ...0 10 3 9 Power Supply Over or under voltage fault Outdoor display F19 LED1 flash 6 times...

Страница 43: ...1 10 3 10 Overheat Protection For Discharge Temperature Outdoor display F4 LED1 flash 8 times...

Страница 44: ...42 10 3 11 Outdoor Display F11 LED1 flash 18 times 10 3 12 Outdoor Display F28 LED1 flash 19 times Compressor loss of synchronism detection Compressor position detection circuit fault...

Страница 45: ...881 6571 6419 6076 24 16 6217 6265 6078 6045 5735 7029 7757 7354 7214 6750 27 19 6440 6580 6440 6300 5950 7350 8050 7840 7560 7070 30 22 6744 6961 6732 6701 6291 7681 8639 8299 7961 7606 32 23 7034 73...

Страница 46: ...477 2697 24 16 1884 1899 1842 1832 1076 1519 1968 2284 2694 2892 27 19 1894 1935 1894 1853 1091 1540 1967 2346 2771 2962 30 22 1927 1989 1923 1914 1153 1609 2111 2562 2918 3186 32 23 1954 2029 1972 19...

Страница 47: ...6 5 5 6 7 8 9 8 7 6 5 0 3 7 7 5 0 8 2 1 6 7 2 7 4 2 0 8 6 8 8 8 7 6 9 8 5 6 2 4 7 7 3 8 3 8 12 11 7 2 0 6 3 1 9 6 4 0 5 7 18 16 6 7 0 5 9 8 7 5 0 4 1 6 24 20 8 4 9 3 7 2 4 4 6 2 9 4 indoor temp humidi...

Страница 48: ...4 9 5 3 8 6 2 3 1 4 9 2 2 1 7 9 4 3 9 7 1 3 1 6 8 2 7 6 8 7 7 2 6 2 5 2 3 7 2 2 12 11 7 1 9 1 3 4 7 1 9 6 5 1 18 16 2 7 4 1 8 3 3 1 4 0 2 1 24 20 9 3 0 1 4 4 9 0 5 8 indoor temp humidity 46 power con...

Страница 49: ...984 0 1876 1938 2016 10 1877 1964 2077 20 1981 2040 2172 25 2169 2270 2406 30 2366 2448 2560 35 2477 2550 2698 40 2794 2933 3060 46 3173 3315 3423 cooling discharge pressure table indoor temp 1000 150...

Страница 50: ...6 7 8 7 6 10 2 0 9 9 0 8 5 8 6 20 0 5 9 8 1 8 2 9 6 25 0 6 9 6 2 8 8 2 7 30 9 6 9 4 3 8 5 3 7 35 9 8 9 0 6 8 4 7 7 40 8 8 0 1 6 4 9 1 5 8 46 937 1069 1251 cooling suction pressure table indoor temp 3...

Страница 51: ...41 10 2600 2781 2845 7 8 2978 3183 3267 2 1 3317 3451 3639 7 6 3173 3350 3490 12 11 3098 3250 3404 18 16 2872 3055 3155 24 20 2460 2596 2703 Heating discharge pressure table indoor temp 1000 1500 2000...

Страница 52: ...4 5 8 4 7 8 6 9 5 3 8 5 7 5 5 2 1 5 1 7 2 0 7 6 7 6 7 6 8 4 8 5 3 8 9 0 8 12 11 5 6 9 2 5 9 6 2 9 18 16 1093 1119 1132 24 20 1279 1305 1318 heating discharge pressure table indoor temp 0 100 200 300 4...

Страница 53: ...Circuit diagrams Domestic air conditioner 51 12 Circuit diagrams 12 1 Outdoor unit control board Circuit Diagrams...

Страница 54: ...Circuit diagrams Domestic air conditioner 52...

Страница 55: ...Circuit diagrams 5 3 Domestic air conditioner...

Страница 56: ...Circuit diagrams Domestic air conditioner 54 12 2 Module board Circuit Diagram...

Страница 57: ...duct 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 inf...

Страница 58: ...al 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...

Страница 59: ...e r u d e c o r p f o l a v o m e R 57 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...

Страница 60: ...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...

Страница 61: ...Removal Procedure 3 Removal of Fan and Fan Motor Loosen the fixing screws Remove the fan and motor 59 Domestic Air Conditioner...

Страница 62: ...Removal Procedure 4 Removal of Fan Motor Bracket and Partition Loosen the fixing screws and lift the fan motor bracket Remove the partition 60 Domestic Air Conditioner...

Страница 63: ...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 61 Domestic Air Conditioner...

Страница 64: ...iagrams 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 Wang Xiaofei Wang Mingqiang...

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