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Haier D Series Service Manual

Domestic air conditioner, wall mounted type
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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
SERVICE MANAUL
Model No.
WARNING
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Wall Mounted Type
1U09JEDFRA
1U12JECFRA
1U25S2PJ1FA
1U35S2PJ1FA
2016 (Qingdao Haier Air Conditioner General corp. , Ltd)
Version V1
Domestic air conditioner
D-Series
Date 2016-11-02

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Summary of Contents for Haier D Series

  • Page 1 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2016 (Qingdao Haier Air Conditioner General corp. , Ltd) All rights reserved. Unauthorized copying and distribution is a violation of law...

  • Page 2: Table Of Contents

    Contents Contents 1.Introduction ..................... 1 2.Specifications ..................7 3.Sensors list ..................... 8 4.Pinping diagrams ..................9 5.Operation range ..................10 6.Printed Circuit Board Connector Wiring Diagram ......... 11 7.Outdoor Functions and Control ............. 17 8.Dimensional drawings ................29 10.Service Diagnosis ................30 11.Performence and cerves diagrams .............

  • Page 3: Introduction

    Introduction 1.Introduction 1.1 Model name explanation Apply toT1; 220~240V50HZ/1ph DC inverter Heat pump & R32 refrigerant Version number Europe Platform of outdoor units: 40 platform Nominal cooling capacity (9000BTU/h) Type of outdoor unit : U (normal type) The maximum combination number Apply toT1;...
  • Page 4 Introduction 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 to 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.
  • Page 5 Introduction Warning Do not repair the electrical components with wet hands . Working on the equipment with wet hands can cause an electrical shock Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock.
  • Page 6 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.
  • Page 7 Introduction Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site, to prevent electrical shocks. Do not install the equipment in a place where there is a possibility of combustible gas leaks. If a combustible gas leaks and remains around the unit, it can cause a fire.
  • Page 8 Introduction 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. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.

  • Page 9: Specifications

    Specification 2.Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE Phase Frequency Voltage NOMINAL CAPACITY and NOMINAL INPUT Cooling(09K/12K) heating(09K/12K) 2.60/3.50 2.60/4.20 Capacity rated Btu/h 8870/11940 8870/14330 Power Consumption(Rated) 0.65/0.87 0.64/1.05 5.1/A+++(09K) SEER/SCOP 8.5/A+++ 4.6/A++(12K) Annual energy consumption 107/144 716/973 Moisture Removal m³/h 1.2*10 /1.6*10 TECHNICAL SPECIFICATIONS-UNIT Dimensions...

  • Page 10: Sensors List

    Specification Heat Type ML fin- 7HI-HX tube exchanger Row*stage*fitch 2*26*1.4 TECHNICAL SPECIFICATIONS-OTHERS Refrigerant type Refrigerant charge 0.95 Refrigerant Maximum allowable distance circuit between indoor an outdoor Maximum allowable level difference Refrigerant control liquid 6.35 Piping connections 9.52 (external diameter) drain Heat insulation type Both liquid and Gas pipes Max.

  • Page 11: Pinping Diagrams

    Piping diagrams 4 Pinping diagrams Domestic air conditioner...

  • Page 12: Operation Range

    Operation range 5.Operation range Domestic air conditioner...

  • Page 13: Printed Circuit Board Connector Wiring Diagram

    Wiring diagrams 6.Printed Circuit Board Connector Wiring Diagram Connectors PCB (1) (Outdoor Control PCB) Connector for power N and L Connector for ground CN23 Connector for DC POWER 15Vand 5V to the module board Connector for CN2,CN1 on the module board CN10 CN22 Connector for fan moto...
  • Page 14 Wiring diagrams PCB (2) (Module PCB for 09-12K ) CN10 Connector for the DC power 5V and 15V form the control PCB CN11 Connector for communicate between the control board and the module board P (CN1) Connector for capacitance board N (CN5) LI (CN7), Connector for reactor...
  • Page 15 Wiring diagrams PCB (1) CN28 CN25 CN23 CN24 CN22 CN50 CN17 CN47 CN45 CN15 CN11 CN36 CN48 CN49 CN10 CN9 Domestic air conditioner...
  • Page 16 Wiring diagrams PCB (2) CN11 CN10 09-12K Domestic air conditioner...
  • Page 17 Wiring diagrams PCB (3) CN10 CN11 Domestic air conditioner...
  • Page 18 Wiring diagrams Wiring diagrams Domestic air conditioner...

  • Page 19: Outdoor Functions And Control

    Functions and control 7.Outdoor Functions and Control 7.1 Main functions and control specification 7.1.1 The operation frequency of outdoor unit and its control 7.1.1.1 The operation frequency control of compressor The operation frequency scope of compressor Mode Minimun operation frequency Maximun operation frequency Heating 25Hz...
  • Page 20 Functions and control affected by the environment, and they have nothing to do with the ability of the indoor unit. Refrigeration/dehumidification mode: Serial No. Temperature scope Frequency limitation Wh_c<16 Max_hz1 23HZ Wh_c<22 Max_hz1 27HZ Wh_c<28 Max_hz1 35HZ Wh_c<32 Max_hz2 51HZ Wh_c<40 Max_hz3 69HZ...
  • Page 21 Functions and control When heating, it is needed to satisfy F-MIN-r (compressor’s Min_hz)< F<F-MAX-r (compressor’s Max_hz) 7.1.2 The outdoor fan control (Exchange fan) When the fan is changed among every airflow speed (including stop blowing), in order to avoid the airflow speed from skipping frequently, it must be kept under each mode for over 30 seconds, and then it can be changed to another mode (when refrigerating, the time is changed to 15 seconds).
  • Page 22 Functions and control value of the middle 2 values), take the mean value. Abnormal stop Decreasing the frequency rapidly 1HZ/second Decreasing the frequency slowly (1HZ/10seconds) The frequency doesn’t change. Increasing the frequency (1HZ/10second) Increasing the frequency 1HZ/1second TTC>=115 lasts for 20 seconds. Overheating protection of air-blowing, alarm malfunction to the indoor, others don’t last.
  • Page 23 Functions and control Increasing slowly Keeping the frequency Decreasing slowly Decreasing rapidly Stop The compressor stops for more than 3 minutes, Tpg_indoor> 9 , the compressor recovers. 7.2 Value of Thermistor Ambient Sensor, Defrosting Sensor, Pipe sensor R25 =10K 3% B25 /50 =3700K 3% Temp.( ) Max.(K ) Normal(K )
  • Page 24 Functions and control 48.3178 44.8454 41.5851 -1.51 1.42 45.8860 42.6525 39.6112 -1.49 1.40 43.5912 40.5800 37.7429 -1.47 1.39 41.4249 38.6207 35.9739 -1.45 1.37 39.3792 36.7676 34.2983 -1.43 1.35 37.4465 35.0144 32.7108 -1.41 1.33 35.6202 33.3552 31.2062 -1.38 1.31 33.8936 31.7844 29.7796 -1.36 1.29...
  • Page 25 Functions and control 6.7273 6.4459 6.1707 -1.13 1.11 6.4803 6.2021 5.9304 -1.17 1.14 6.2437 5.9687 5.7007 -1.21 1.18 6.0170 5.7454 5.4812 -1.25 1.22 5.7997 5.5316 5.2712 -1.29 1.25 5.5914 5.3269 5.0704 -1.33 1.29 5.3916 5.1308 4.8783 -1.37 1.33 5.2001 4.9430 4.6944 -1.41 1.36...
  • Page 26 Functions and control 1.5454 1.4149 1.2942 -3.07 2.84 1.5000 1.3721 1.2540 -3.12 2.88 1.4562 1.3308 1.2151 -3.17 2.93 1.4139 1.2910 1.1776 -3.22 2.97 1.3730 1.2525 1.1415 -3.27 3.01 1.3335 1.2153 1.1066 -3.32 3.06 1.2953 1.1794 1.0730 -3.38 3.10 1.2583 1.1448 1.0405 -3.43 3.15...
  • Page 27 Functions and control Discharging Sensor R80 =50K B25/80 =4450K 3% Temp.(( )) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 14646.0505 12061.7438 9924.4999 -2.96 2.45 13654.1707 11267.8730 9290.2526 -2.95 2.44 12735.8378 10531.3695 8700.6388 -2.93 2.44 11885.1336 9847.7240 8152.2338 -2.92 2.43 11096.6531 9212.8101 7641.8972...
  • Page 28 Functions and control 1236.4792 1094.3200 967.6334 -2.36 2.11 1171.0715 1038.0743 919.3533 -2.35 2.09 1109.4661 985.0146 873.7359 -2.33 2.08 1051.4226 934.9440 830.6210 -2.31 2.07 996.7169 887.6792 789.8583 -2.29 2.06 945.1404 843.0486 751.3077 -2.27 2.04 896.4981 800.8922 714.8380 -2.26 2.03 850.6086 761.0603 680.3265 -2.24 2.02...
  • Page 29 Functions and control 146.9136 138.3454 130.1598 -1.47 1.40 140.7403 132.6980 125.0027 -1.44 1.38 134.8559 127.3081 120.0746 -1.42 1.36 129.2457 122.1630 115.3645 -1.40 1.34 123.8956 117.2504 110.8618 -1.37 1.32 118.7926 112.5589 106.5564 -1.35 1.30 113.9241 108.0776 102.4388 -1.32 1.28 109.2784 103.7961 98.5000 -1.30 1.26...
  • Page 30 Functions and control 27.9078 26.5864 25.3048 -1.49 1.44 27.0160 25.7110 24.4470 -1.53 1.48 26.1569 24.8685 23.6222 -1.57 1.52 25.3290 24.0574 22.8291 -1.61 1.55 24.5311 23.2765 22.0662 -1.65 1.59 23.7620 22.5245 21.3323 -1.69 1.63 23.0205 21.8002 20.6261 -1.73 1.66 22.3055 21.1025 19.9465 -1.77 1.70...

  • Page 31: Dimensional Drawings

    Dimensional drawings 8.Dimensional drawings 9.Center of gravity Domestic air conditioner...

  • Page 32: Service Diagnosis

    Service diagnosis 10.Service Diagnosis 10.1 Caution for Diagnosi 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.
  • Page 33 Service diagnosis 10.3 Problem Symptoms and Measures Symptom Check Item Details of Measure Check the power supply. Check to make sure that the rated voltage is supplied. None of the units operates Check the indoor PCB Check to make sure that the indoor PCB is broken Operation A power failure of 2 to 10 cycles can stop air conditioner Check the power supply.
  • Page 34 Service diagnosis 10.4 Error Codes and Description indoor display Code indication Indoor Reference Outdoor fault description displaying Page (LED1 flash panel code times) indication Indoor and Communication fault between indoor and Page .41 Outdoor outdoor units Room temperature sensor failure Page .33 Indoor Malfunction Heat-exchange sensor failure...
  • Page 35 Service diagnosis 10.4.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure outdoor display F21 LED1 flash 10 times Defrost temperature sensor failure F7 LED1 flash 11 times Suction temperature sensor failure F6 LED1 flash 12 times Ambient temperature sensor failure F25 LED1 flash 13 times Discharge temperature sensor failure Method of The temperatures detected by the thermistors are used to determine thermistor errors...
  • Page 36 Service diagnosis 10.4.2 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 MCU are used to determine MCU Method of Malfunction Malfunction Detection Malfunction Malfunction when the data of EEPROM is error or the EEPROM is damaged...
  • Page 37 Service diagnosis Check whether Terminal on the outdoor mainboard is well inserted. Fasten the connection Is it normal? Power on the unit and turn into Cool mode. check whether the motor can running 1.Measure whether the voltage between 1 and 3 of the motor socket on the PCB is DC310V approx.
  • Page 38 Service diagnosis IPM protection dues to the compressor faulty Supposed IPM protection dues to faulty PCB of IPM module Causes Compressor wiring disconnected * Caution Be sure to turn off power switch before connect or disconnect connector, Troubleshooti else parts damage may be occurred. Turn on the unit.
  • Page 39 Service diagnosis Supposed Faulty IPM Module Faulty compressor Causes Faulty power supply * Caution Be sure to turn off power switch before connect or disconnect connector, or parts Troubleshooti damage may be occurred. Electrify the machine again and turn it on with the remote controller, If malfunctions IPM Module is damaged and are reported before or upon the compressor...
  • Page 40 Service diagnosis The outdoor PCB is broken Supposed The IPM module is broken Causes Communication wiring disconnected * Caution Be sure to turn off power switch before connect or disconnect connector, or else Troubleshooti parts damage may be occurred. 1) Check whether plug of MODULE COM and MODULE POWER on the outdoor PCB and IPM module is tight connected 2) Check whether the connection of P &...
  • Page 41 Service diagnosis Malfunction An voltage signal is fed from the voltage detection circuit to the microcomputer Detection Conditions Supposed Supply voltage not as specified. Causes The IPM module is broken. Troubleshooti * Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
  • Page 42 Service diagnosis The Discharge temperature control is checked with the temperature being detected Method of by the Discharge pipe thermistor Malfunction Detection when the compressor discharge temperature is above 110 Malfunction Detection Conditions Electronic expansion valve defective Faulty thermistor Supposed Faulty PCB Causes Troubleshooti...
  • Page 43 Service diagnosis 10.4.10 The communication fault between indoor and outdoor Indoor display E7:Outdoor display LED1 flash 15 times Method of Communication is detected by checking the indoor PCB and the outdoor PCB Malfunction Detection Malfunction The outdoor PCB broken leads to communication fault Detection The indoor PCB broken leads to communication fault Conditions...
  • Page 44 Service diagnosis 10.4.11 Loss of synchronism detection Inverter side current detection is abnormal Outdoor Display F11:LED1 flash 18 times F28:LED1 flash 19 times Method of The position of the compressor rotor can not detected normally Malfunction Detection when the wiring of compressor is wrong or the connection is poor; Malfunction or the compressor is damaged Detection...
  • Page 45 Service diagnosis 10.3.12 High work-intense protection Outdoor display LED1 flash 21 times Method of High work-intense control is activated in the heating mode if the temperature being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Detection Malfunction Activated when the temperature being sensed by the heat exchanger Detection rises above 63 twice in 30 minutes.

  • Page 46: Performence And Cerves Diagrams

    Performance and ceves diagrams 11.Performence and cerves diagrams 11.1 Cooling capacity-temperature curves 09K AS09DCAHRA 1U09JEDFRA performance curves cooling value-temerature table indoor temp. outdoor temp.(humidity 46%) DB/WB 18/12 2440 2295 2121 1950 1776 2208 2403 2333 2235 2130 21/15 2562 2417 2247 2040 1888...
  • Page 47 Performance and ceves diagrams 11.1 Cooling capacity-temperature curves 12K AS12DCAHRA 1U12JECFRA performance curves cooling value-temerature table indoor temp. outdoor temp.(humidity 46%) DB/WB 18/12 2704 2650 2584 2570 2428 2961 3311 3192 3038 2823 21/15 2815 2765 2761 2713 2546 3169 3384 3374 3166...
  • Page 48 Performance and ceves diagrams 11.2 Cooling power consumption value- temperature curves 09K AS09DCAHRA 1U09JEDFRA performance curves power consumption value-temp.table indoor temp. outdoor temp.(humidity 46%) DB/WB 18/12 21/15 24/16 27/19 30/22 32/23 1036 power consumption-temp.curves 1100 1000 indoor tempe.(DB/WB) Domestic air conditioner...
  • Page 49 Performance and ceves diagrams 11.2 Cooling power consumption value- temperature curves 12K AS12DCAHRA 1U12JECFRA performance curves power consumption value-temp.table indoor temp. outdoor temp.(humidity 46%) DB/WB 18/12 1008 1077 21/15 1047 1142 24/16 1142 1229 27/19 1000 1181 1263 30/22 1030 1111 1234 1336...
  • Page 50 Performance and ceves diagrams 11.3 Cooling discharge pressure curves 09K AS09DCAHRA 1U09JEDFRA performance curves cooling discharge pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15 27/19 32/23 1990 2047 2127 2050 2132 2211 2070 2161 2277 2115 2189 2327 2219 2274 2391 2458...
  • Page 51 Performance and ceves diagrams 11.3 Cooling discharge pressure curves 12K AS12DCAHRA 1U12JECFRA performance curves cooling discharge pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15 27/19 32/23 1970 2071 2156 2075 2157 2228 2093 2186 2278 2111 2215 2291 2219 2301 2421 2467...
  • Page 52 Performance and ceves diagrams 11.4 Cooling suction pressure curves 09K AS09DCAHRA 1U09JEDFRA performance curves cooling suction pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15 27/19 32/23 1012 1047 1001 1029 1058 1018 1047 1075 1029 1058 1087 1098 1121 1132 1110 1132...
  • Page 53 Performance and ceves diagrams 11.4 Cooling suction pressure curves 12K AS12DCAHRA 1U12JECFRA performance curves cooling suction pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15 27/19 32/23 1175 1209 1250 1195 1229 1264 1216 1250 1284 1229 1264 1298 1311 1339 1352 1325...
  • Page 54 Performance and ceves diagrams 11.5 Heating capacity-temperature curves 09K AS09DCAHRA 1U09JEDFRAperformance curves heating capacity and indoor/outdoor temp.table outdoor temp. indoor temp.(humidity 46%) DB/WB 2275 2120 2022 2528 2332 2247 2831 2586 2517 3210 2904 2764 3885 3375 3113 -7/-8 4297 3896 3621 4739...
  • Page 55 Performance and ceves diagrams 11.5 Heating capacity-temperature curves 12K AS12DCAHRA 1U12JECFRAperformance curves heating capacity and indoor/outdoor temp.table outdoor temp. indoor temp.(humidity 46%) DB/WB 2389 2226 2123 2654 2449 2359 2973 2716 2642 3371 3050 2902 4080 3544 3269 -7/-8 4512 4091 3802 4976...
  • Page 56 Performance and ceves diagrams 11.6 Heating power consumption value- temperature curves 09K AS09DCAHRA 1U09JEDFRA performance curves power consumption value-temp.table outdoor temp. indoor temp.(humidity 46%) DB/WB 1193 1325 1458 1312 1458 1603 1386 1540 1693 1452 1614 1775 1433 1592 1751 -7/-8 1414 1571...
  • Page 57 Performance and ceves diagrams 11.6 Heating power consumption value- temperature curves 12K AS12DCAHRA 1U12JECFRA performance curves power consumption value-temp.table outdoor temp. indoor temp.(humidity 46%) DB/WB 1252 1391 1530 1377 1530 1683 1455 1617 1778 1525 1694 1864 1504 1671 1839 -7/-8 1485 1650...
  • Page 58 Performance and ceves diagrams 11.7 Heating discharge pressure curves 09K AS09DCAHRA 1U09JEDFRA performance curves Heating discharge pressure.table outdoor temp indoor temp. DB/WB 1710 1790 1859 1880 1969 2047 2035 2148 2210 2186 2297 2388 2351 2476 2594 -7/-8 2717 2834 2956 2916 3072...
  • Page 59 Performance and ceves diagrams 11.7 Heating discharge pressure curves 12K AS12DCAHRA 1U12JECFRA performance curves Heating discharge pressure.table outdoor temp indoor temp. DB/WB 1813 1885 1992 1985 2073 2128 2183 2262 2382 2279 2419 2552 2488 2607 2745 -7/-8 2832 2984 3129 3120 3235...
  • Page 60 Performance and ceves diagrams 11.8 Heating suction pressure curves 09K AS09DCAHRA 1U09JEDFRA performance curves heating discharge pressure.table outdoor temp indoor temp. DB/WB 259.6 313.6 377.6 -7/-8 12/11 18/16 1038 1073 1091 24/20 1224 1259 1277 1400 1300 1200 1100 1000 -7/-8 7/6 12/11 18/16 24/20 Outdoor Temp.
  • Page 61 Performance and ceves diagrams 11.8 Heating suction pressure curves 12K AS12DCAHRA 1U12JECFRA performance curves heating discharge pressure.table outdoor temp indoor temp. DB/WB 203.2 258.4 257.2 312.4 321.2 376.4 -7/-8 12/11 18/16 1028 1065 1083 24/20 1214 1251 1269 1400 1300 1200 1100 1000...

  • Page 62: Sound Level

    Sound level 12.Sound level Sound pressure level 230V,50HZ Sound power level Model Measuring location (cooling/heating) Cooling/heating microphone 1U09JEDFRA 1U12JECFRA Domestic air conditioner...

  • Page 63: Circuit Diagrams

    Circuit diagrams 13.Circuit diagrams 13.1 Outdoor unit control board Circuit Diagrams Domestic air conditioner...
  • Page 64 Circuit diagrams Domestic air conditioner...
  • Page 65 Circuit diagrams 13.2 Module board Circuit Diagram R219 1K R217 1K R229 4.22K R228130K R227130K R226130K D205 LL4148 VUF B VVF B VWFB C030 C029 R003 4.7K C007 R001 4.7K C205 R002 4.7K R004 4.7K R231 4.7K C008 C009 Domestic air conditioner...
  • Page 66 Circuit diagrams Sincere Forever Haier Group Edited by : Shi haiyan Haier Industrial Park, No.1, Haier Road Zhang chenglong 266101, Qingdao, China_ Signed by : wang caiping Http //www.haier.com Approved by: Yang wenjun Domestic air conditioner...
  • Page 67 Wall Mounted Type DC Inverter FREE MATCH NEW40-Series SERIES:NEW40...
  • Page 68 Remove of front panel Outdoor unit Step Procedure Points 1.Features Loosen the service Be careful not to cover screw and cut your finger by remove the service the fins of the cover. heat exchanger Domestic air conditioner...
  • Page 69 Step Procedure Step Procedure Points Step Procedure Points Points 2. Remove the panels. Loosen the 7 screws and lift the top panel Loosen the screws of the panel. Pull and remove the front panel. Domestic air conditioner...
  • Page 70 Step Procedure Points Remove the fixting screws, then lift the electrical box Domestic air conditioner...
  • Page 71 Remove the air filters and horizontal flap Step Procedure Points Loosen the fixting screws and remove back protect net . Loosen the fixting screws and remove the side panel. Domestic air conditioner...
  • Page 72 Remove the casing Step Procedure Points Loosen the fixting screws and remove the side panel. Loosen the fixting screws and remove the cross beam. Domestic air conditioner...
  • Page 73 Step Procedure Points Loosen the fixting screws remove the fan Loosen the fixting screws and lift the fan motor. Domestic air conditioner...
  • Page 74 Release stepping motor (2type) Step Procedure Points Remove fixing screws,then lift the fan motor bracket Cut down and pull out compressor and remove Domestic air conditioner...
  • Page 75 Removal of Heat Exchanger Step Procedure Points Loosen the marked fixing screws Loosen the fixting hook remove heat exchanger Domestic air conditioner...
  • Page 76 Step Procedure Points Remove fixing screws,then lift heating pipe Remove fixing screws,then lift valves Domestic air conditioner...
  • Page 77 Step Procedure Points Remove fixing screw,then lift valve set Domestic air conditioner...

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