Haier 1U71SABFRA Service Manual
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Haier 1U71SABFRA Service Manual

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SERVICE MANAUL
Wall Mounted Type
DC Inverter
Model No.
1U71SABFRA
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
(Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version V1
Date 2018-06-29

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Summary of Contents for Haier 1U71SABFRA

  • Page 1 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death (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. Piping diagrams ..................9 5. Operation range ..................10 6. PCB Diagram ..................11 7. Functions and Control................8. Dimensional drawings................9. Conter of gravity ................... 10. Service Diagnosis ................11. Performance and cerves diagrams............. 12.

  • Page 3: Introduction

    Introduction 1 Introduction 1.1 Model name explanation Apply toT1; 220~240V50Hz/1P h DC inverter Heat pump & R32 refrigerant Version number Australia Platform of outdoor units: S (S platform) Nominal cooling capacity (7100W) Type of outdoor unit : U (normal type) The maximum combination number Domestic air conditioner...
  • 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 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. Be sure to install the packing and seal on the installation frame properly. If the packing and seal are not installed properly, water can enter the room and wet the furniture and floor.
  • Page 8 Introduction Check the grounding, and repair it if the equipment is not properly grounded. Improper 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.

  • Page 9: Specifications

    Specification 2. Specifications - 1U53RABFRA NOMINAL DISTRIBUTION SYSTEM VOLTAGE 220~240 NOMINAL CAPACITY and NOMINAL INPUT n i l 7100(1900-8400) 7600(2000-10200) Capacity rated Btu/h 25900(6800-34800) 24200(6500-28600) 1710 1890 4.15 4.02 ³ 2.4*10 ³ TECHNICAL SPECIFICATIONS-UNIT Dimensions H*W*D 920×385×762 Packaged H*W*D 1085×487×843 Dimensions Sound level B(A)

  • Page 10: Sensors List

    Specification TECHNICAL SPECIFICATIONS-OTHERS Refrigerant type Refrigerant Refrigerant charge 1.45 circuit Refrigerant control circuit liquid Piping connections 12.7 (external diameter) drain Heat insulation type Both liquid and Gas pipes Max. piping Length Max. Level Difference Chargeless Amount of Additional Charge of Refrigerant International Protection degree IP 24 Note: the data are based on the conditions shown in the table below...

  • Page 11: Piping Diagrams

    Pinping diagrams 4.Pinping diagrams Filter Filter Domestic air conditioner...

  • Page 12: Operation Range

    Operation range 5 Operation range Domestic air conditioner...

  • Page 13: Pcb Diagram

    Wiring diagrams 6.PCB Diagram Connectors PCB (1) (Outdoor Control PCB) 1) CN1, CN2 Connector for power N and L 2) CN3 Connector for ground 3) CN23 Connector for DC POWER 15Vand 5V to the module board 4) CN9, CN10 Connector for CN2,CN1 on the module board 5) CN22 Connector for fan motor 6) CN11 Connector for four way valve coil 7) CN17, CN47 Connector for thermistors...
  • Page 14 Connector Wiring Diagram PCB (1) CN28 CN25 CN23 CN24 CN22 CN50 CN17 CN47 CN45 CN15 CN11 CN36 CN10 CN9 Domestic Air Conditioner...
  • Page 15 Connector Wiring Diagram PCB (2) CN10 CN11 Domestic Air Conditioner...
  • Page 16 Functions and control Wiring diagrams OUTDOOR UNIT WIRING DIAGRAM 0010534175A COMPRESSOR CN28 BR(OR B) R(U) C(W) AC-L CN2 S(V) CN25 BL(OR W) AC-N FUSE1 T25A 250VAC CN24 CN36 CN11 MODULE COM OUTDOOR PCB COMB COMA CN5 CN6 CN7 CN8 CN9 BL BL(OR W) CN23 CN10...

  • Page 17: Functions And Control

    Functions and control 7. 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 7.1.1.2 The starting of compressor When the compressor is started for the first time, it must be kept under the conditions of 58Hz,88Hz for...
  • Page 18 Functions and control < ≥ Max_hz3 90 HZ Wh_c < ≥ Max_hz5 60 HZ Wh_c Remarks: the above are not only the maximum frequency limitations of 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 actural running system ability*the maximum frequency which is limited by the temperature and under the...
  • Page 19 Functions and control During the compressor is started for 3 seconds, the outdoor fan is controlled the airflow speed according to the temperature conditions of the outdoor environment. Tao < Tao 29 Tao < After the compressor is started for 3 seconds, the outdoor fan is controlled the airflow speed according to the temperature conditions of the outdoor environment and frequency of compressor.
  • Page 20 Functions and control 7.1.5 Protection function 7.1.5.1 TTC high temperature-preventing protection Once the machine is started, it can run TTC overheating protection of air-blowing, but air-blowing sensor malfunction must alarm after 4 minutes during which the compressor is started (during the course of self-detection, there’s 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...
  • Page 21 Functions and control 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 it and it is in accord with the running state). The indoor heat exchanger sensor tests the temperature of the indoor heat exchanger. If the temperature is higher than 48 , decrease the rotate speed of the compressor and do the high temperature-preventing protection of the indoor heat exchanger;...
  • Page 22 Functions and control 7.1.5.4 Antifreezing protection of the indoor heat exchanger When refrigerating/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). 11 //ice_temp_4+2 ice_temp_4 Increasing slowly 9 //ice_temp_3+2 Keeping the frequency ice_temp_3...
  • Page 23 Functions and control 7.1.5.5 Temperature protection of the outdoor refrigerating coil When the defrosting temperature and the sensor’s temperature are higher than 68 , the frequency of the compressor decreases 1hz/10seconds. Keep the frequency until it decreases to the lowest frequency. When the temperatures are lower than 68 and higher than 61 , keep the frequency of the compressor.
  • Page 24 Functions and control 130.2371 117.4366 105.7989 -1.87 1.70 122.8484 110.9627 100.1367 -1.85 1.69 115.9272 104.8882 94.8149 -1.83 1.67 109.4410 99.1858 89.8106 -1.81 1.66 103.3598 93.8305 85.1031 -1.80 1.64 97.6556 88.7989 80.6728 -1.78 1.63 92.3028 84.0695 76.5017 -1.76 1.62 87.2775 79.6222 72.5729 -1.74 1.60...
  • Page 25 Functions and control 13.3431 12.8572 12.3778 -0.88 0.87 12.7718 12.3223 11.8780 -0.86 0.85 12.2280 11.8126 11.4011 -0.83 0.83 11.7102 11.3267 10.9459 -0.81 0.80 11.2172 10.8634 10.5114 -0.78 0.78 10.7475 10.4216 10.0964 -0.75 0.75 10.3000 10.0000 9.7000 -0.75 0.75 9.8975 9.5974 9.2980 -0.76 0.76...
  • Page 26 Functions and control 2.5396 2.3611 2.1932 -2.31 2.17 2.4591 2.2840 2.1195 -2.36 2.21 2.3815 2.2098 2.0486 -2.40 2.25 2.3068 2.1383 1.9803 -2.45 2.29 2.2347 2.0695 1.9147 -2.49 2.34 2.1652 2.0032 1.8516 -2.54 2.38 2.0983 1.9393 1.7908 -2.59 2.42 2.0337 1.8778 1.7324 -2.63 2.46...
  • Page 27 Functions and control 0.6877 0.6140 0.5478 -4.63 4.16 0.6700 0.5977 0.5328 -4.69 4.21 0.6528 0.5820 0.5183 -4.74 4.26 0.6361 0.5667 0.5043 -4.80 4.31 0.6200 0.5518 0.4907 -4.86 4.36 0.6043 0.5374 0.4775 -4.92 4.41 0.5891 0.5235 0.4648 -4.98 4.45 0.5743 0.5100 0.4524 -5.04 4.50...
  • Page 28 Functions and control 2434.5487 2112.5459 1831.4826 -2.56 2.24 2296.6230 1996.2509 1733.6024 -2.55 2.23 2167.2730 1887.0018 1641.4966 -2.53 2.22 2045.9191 1784.3336 1554.7931 -2.52 2.21 1932.0242 1687.8144 1473.1460 -2.50 2.20 1825.0899 1597.0431 1396.2333 -2.48 2.19 1724.6540 1511.6468 1323.7551 -2.47 2.17 1630.2870 1431.2787 1255.4324 -2.45 2.16...
  • Page 29 Functions and control 239.0983 221.9825 205.9065 -1.71 1.61 228.4809 212.4060 197.2844 -1.69 1.59 218.3860 203.2887 189.0648 -1.67 1.57 208.7855 194.6066 181.2273 -1.65 1.55 199.6531 186.3369 173.7524 -1.63 1.54 190.9639 178.4584 166.6217 -1.60 1.52 182.6945 170.9508 159.8181 -1.58 1.50 174.8228 163.7951 153.3249 -1.56 1.48...
  • Page 30 Functions and control 38.9643 37.5045 36.0668 -1.11 1.09 37.6569 36.2078 34.7831 -1.14 1.13 36.3996 34.9622 33.5513 -1.18 1.16 35.1903 33.7653 32.3689 -1.22 1.19 34.0269 32.6151 31.2338 -1.26 1.23 32.9075 31.5096 30.1438 -1.30 1.27 31.8302 30.4467 29.0970 -1.33 1.30 30.7933 29.4246 28.0915 -1.37 1.34...
  • Page 31 Functions and control 9.7563 8.9971 8.2895 -3.00 2.80 9.4901 8.7441 8.0495 -3.05 2.84 9.2322 8.4993 7.8175 -3.09 2.88 8.9824 8.2623 7.5931 -3.14 2.92 8.7404 8.0329 7.3760 -3.19 2.96 8.5059 7.8108 7.1660 -3.24 3.00 8.2787 7.5958 6.9629 -3.29 3.04 8.0584 7.3875 6.7664 -3.33 3.09...

  • Page 32: Dimensional Drawings

    Dimensinal drawings 8.Dimensional drawings 1018 12.7 9.Center of gravity Domestic air conditioner...

  • Page 33: Service Diagnosis

    Connector Wiring Diagram 1 .Service Diagnosis 1 .1.1 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.
  • Page 34 Connector Wiring Diagram 1 .3 Error Codes and Description indoor display Code indication Indoor displaying panel code indication Outdoor fault description (LED1 Only For 498 and 498A display flash Other (Red/Green Time Run □On ★ times) display Flash ■Off ,) Indoor Communication fault...
  • Page 35 Seivice diagnosis 10.3.2 EEPROM abnormal Indoor Display E4: indoor EEPROM error Outdoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times 10.3.3 Indoor AC fan motor malfunction Indoor display E14 This is caused by indoor motor or indoor PCB fault Domestic air conditioner...
  • Page 36 Seivice diagnosis 10.3.4 Outdoor DC fan motor fault Outdoor display F8 LED1 flash 9 times Domestic air conditioner...
  • Page 37 Seivice diagnosis 10.3.5 IPM protection Outdoor display F1 LED1 flash 2 times; F22 LED1 flash 3 times Under this error, please ensure the refrigerating system pressure is normal, and no block, then replace power module Domestic air conditioner...
  • Page 38 Seivice diagnosis 10.3.6 Over-current of the compressor Outdoor Display F2, F23 LED1 flash 24 or 25 times Domestic air conditioner...
  • Page 39 Seivice diagnosis 10.3.7 The communication fault between IPM and outdoor PCB Outdoor display: F3 LED1 flash 4 times Domestic air conditioner...
  • Page 40 Seivice diagnosis 10.3.8 Power Supply Over or under voltage fault Outdoor display: F19 LED1 flash 6 times Domestic air conditioner...
  • Page 41 Seivice diagnosis 10.3.9 Overheat Protection For Discharge Temperature Outdoor display: F4 LED1 flash 8 times Domestic air conditioner...
  • Page 42 Seivice diagnosis 10.3.10 The communication fault between indoor and outdoor Indoor display Outdoor display LED1 flash 15 times Domestic air conditioner...
  • Page 43 Seivice diagnosis Domestic air conditioner...
  • Page 44 Seivice diagnosis Domestic air conditioner...
  • Page 45 Seivice diagnosis Domestic air conditioner...
  • Page 46 Seivice diagnosis Compressor loss of synchronism detection 10.3.11 Outdoor Display F11 LED1 flash 18 times Compressor position detection circuit fault 10.3.12 Outdoor Display F28 LED1 flash 19 times Domestic air conditioner...

  • Page 47: Performance And Cerves Diagrams

    Performance and curves diagrams 11.Performence and curves diagrams 11.1 Cooling capacity-temperature curves performance curves cooling value-temerature table indoor temp. outdoor temp DB/WB 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 38℃ 40℃ 43℃ 21/15℃ 6272 6124.8 5950 5600 5460 5152 4900 4606 4360 24/16℃...
  • Page 48 Performance and curves diagrams 11.2 Cooling power consumption value- temperature curves performance curves power consumption temp.table indoor temp. outdoor temp. DB/WB 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 38℃ 40℃ 43℃ 21/15℃ 1557 1644 1708 1802 1878 1992 2086 2158 2198 24/16℃...
  • Page 49 Performance and curves diagrams 11.3 Cooling discharge pressure curves performance curves cooling discharge pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15 27/19 35/24 1899 2010 2107 1949 2037 2141 1976 2064 2178 2079 2144 2287 2211 2385 2478 2429 2546 2674 2615...
  • Page 50 Performance and curves diagrams 11.4 Cooling suction pressure curves performance curves cooling suction pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15 27/19 35/24 1011 1163 1001 1112 1279 1101 1201 1394 cooling suction pressure and temp curves Domestic air conditioner...
  • Page 51 Performance and curves diagrams 11.5 Heating capacity-temperature curves performance curves heating capacity and indoor/outdoor temp.table outdoor temp. indoor temp.(humidity 46%) DB/WB 10℃ 20℃ 27℃ -15℃ 5194 4686 4190 -10℃ 6526 5877 5158 -7/-8℃ 7920 7181 6289 2/1℃ 9780 8722 7663 7/6℃...
  • Page 52 Performance and curves diagrams 11.6 Heating power consumption value- temperature curves performance curves power consumption value-temp.table indoor temp.(humidity 46%) outdoor temp. DB/WB 10℃ 20℃ 27℃ -15℃ 1972 2141 2277 -10℃ 2216 2366 2515 -7/-8℃ 2424 2669 2800 2/1℃ 2578 2804 2988 7/6℃...
  • Page 53 Performance and curves diagrams 11.7 Heating discharge pressure curves performance curves heating discharge pressure.table indoor temp. outdoor temp DB/WB -7/-8 12/11 18/16 24/20 heating discharge pressure and temp. curves 4000 3500 3000 2500 2000 1500 1000 -7/-8 12/11 18/16 24/20 outdoor temp.(DB/WB) Domestic air conditioner...
  • Page 54 Performance and curves diagrams 11.8 Heating suction pressure curves performance curves heating suction pressure.table indoor temp. outdoor temp DB/WB -7/-8 12/11 1011 1051 1071 18/16 1197 1237 1257 24/20 heating suction pressure and temp. curves 1400 1300 1200 1100 1000 -7/-8 12/11 18/16 24/20 outdoor temp.(DB/WB)

  • Page 55: Circuit Diagrams

    Circuit diagrams 12 Circuit diagrams 12.1 Outdoor unit control board Circuit Diagrams Domestic air conditioner...
  • Page 56 Circuit diagrams Domestic air conditioner...
  • Page 57 Circuit diagrams 12.2 Module board Circuit Diagram Domestic air conditioner...
  • Page 58 Circuit diagrams Sincere Forever Haier Group Edited by : Zhen Lingyun Haier Industrial Park, No.1, Haier Road Zhang Jing 266101, Qingdao, China_ Signed by : Zhang Xianqiang Http //www.haier.com He Shiquan Approved by: Domestic air conditioner...
  • Page 59 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death   2014 (Qingdao Haier Air Conditioner General corp. , Ltd)   All rights reserved. Unauthorized copying and distribution is a violation of law  ...
  • Page 60 Removal of procedure     1.Removal of Outdoor panel 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 panels              ...
  • Page 61 Removal of procedure     Step Procedure Points                                           Loosen the screws of the   panel, pull and remove   the front panel.
  • Page 62 Removal of procedure     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                    ...
  • Page 63 Removal of procedure     3.Removal of Fan and Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points                ...
  • Page 64 Removal of procedure     Step Procedure Points                                           Loosen fixing   screws and remove   the fan motor.    ...
  • Page 65 Removal of procedure     4.Removal of fan motor bracket and partition Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points              ...
  • Page 66 Removal of procedure     Step Procedure Points                                       Loosen fixing   screws, the partition   When assembling, fit plate has a hook on  ...
  • Page 67 Removal of procedure     5.Removal of compressor and heat exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points                ...
  • Page 68 Removal of procedure     Step Procedure Points                                         Loosen marked   fixing screws   remove heat   exchanger.      ...
  • Page 69 Read the precautions in this manual This appliance is filled with R32. carefully before operating the unit. Keep this manual where the user can easily nd it. WARNING: · Do not use means to accelerate the defrosting process or to clean, other than those ·...
  • Page 70 Installation Manual of Room Air Conditioner Preparation Selection of Installation Place Necessary Tools for Installation Indoor Unit Torque wrench Driver (17mm,22mm,26mm) Nipper Place, robust not causing vibration, where the body can be supported suf ciently. Hacksaw Pipe cutter Place, not affected by heat or steam generated in the vicinity, where inlet and outlet of the Hole core drill Flaring tool unit are not disturbed.
  • Page 71 Outdoor side (Section of wall hole) Indoor side 1U18RABFRA 1U24SABFRA 1U53RABFRA 1U71SABFRA Installation of the Indoor Unit Drawing of pipe [ Rear piping ] Draw pipes and the drain hose, then fasten them with the adhesive tape Selection of pipe [ Left ・...
  • Page 72 Outdoor unit Connecting the indoor/outdoor Electric Cable Installation of Outdoor Unit Drawing for the installation of indoor and outdoor units Install according to Removing the wiring cover Connection of pipes Remove terminal cover at right bottom corner of To bend a pipe, give the roundness as large as possible not to crush the pipe , indoor unit, then take off wiring cover by removing and the bending radius should be 30 to 40 mm or longer.
  • Page 73 No gas leakage? On Drainage In case of gas leakage, tighten parts of pipe connection. If Please install the drain hose so as to be downward slope without fail. leakage stops, then proceed 6. steps Please don’t do the drainage as shown below. If it does not stop gas leakage, discharge whole refrigerants from the service port.

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