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Haier D-Series Service Manual

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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

AS09DCAHRA
AS12DCAHRA
AS20S2SD1FA
AS25S2SD1FA
AS35S2SD1FA
AS42S2SD1FA
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: Wall Mounted Type

    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

    Table fo contents Contents 1.Introduction ..................1 2.Features ....................7 3.Specifications ..................11 4.Sensors list ..................12 5.Pinping diagrams ................13 6.Printed Circuit Board Connector Wiring Diagram ........ 14 7.Functions and Control ................ 18 8.Dimensional drawings ................ 36 9.Center of gravity ................. 36 10.Service Diagnosis ................
  • Page 3: Introduction

    Intuoduction 1.Introduction 1.1 Model name explanation Apply toT1; 220~240V50HZ/1ph DC inverter Heat pump & R32 refrigerant Version number Platform of indoor units:40 Platform Platform of indoor units:D(D platform) Nominal cooling capacity (9000BTU/h) Type of indoor unit: S (wall-mounted) Indoor unit Apply toT1;...
  • Page 4: Safety Cautions

    Intuoduction 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: Cautions Regarding Products After Repair

    Intuoduction 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 Intuoduction 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: Inspection After Repair

    Intuoduction 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: Using Icons

    Intuoduction 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: Features

    Features 2.Features Wi-Fi control:Control your air conditioning system with smart phone or tablet which can connect internet. Human sensor:Automatically adjust operation frequency and modes to save energy,improve comfort and convenience by monitoring human location,movements,absence with 2 human activity sensors. Light sensor:Sensor control,light sensor can offer comfort and save energy. on-off card:Control the system with a room card in the remote place through the level signal.It is widely adopted in the building,hotel or other commercial space.Convenient form management.
  • Page 10 Precise temp control 0.5°C Can make the setting temperature by 0.5°C so to achieve more precise comfort and energy saving. Nano-aqua: Haier unique Aqua generator can ionize water molecules into H+ and O2- as well as small cluster of water , which can keep your skin moist and have the effect of air purification.
  • Page 11 Features as to enhance protect effect with nice design. 2-way piping design: The indoor unit offers the possibility of left or right piping direction. Easy clean design: The indoor front panel is easy to wash and the air flaps are easy to detach without any special tools for quick cleaning.
  • Page 12 Warm start when the unit start working at heating mode,or change from cooling mode to heating mode,the unit will not blow or blow at super low speed in order to avoid cold air disturbance. Long life reliable PCB Haier PCB is tested 96 hours under hard enviroment temperature 85 & moisture 85%, this test condition is more or less 10 years under normal condition.
  • Page 13: Specifications

    Specifications 3.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 Dimensions...
  • Page 14: Sensors List

    Specifications TECHNICAL SPECIFICATIONS-PARTS cooling(09K/12K) heating(09K/12K) Type Cross flow fan Motor output Air flow rate(high) m³/h 650/700 650/700 Speed(super/high/low) 1100/1000/600 1050/900/600 Type ML fin- 7HI-HX tube Heat exchanger Segment *stage*fitch 3*16*1.4 Air direction control Right,Left,Horizontal,Downward Removable/Washable/Mildew Proof Air filter Temperature control Microcomputer Control Remote controller model YR-HQ01...
  • Page 15: Pinping Diagrams

    Piping diagrams 5 Pinping diagrams Domestic air conditioner...
  • Page 16: Printed Circuit Board Connector Wiring Diagram

    Connector Wiring diagrams 6.Printed Circuit Board Connector Wiring Diagram Connectors PCB(1) (Control PCB) For AS09/12DCAHRA series PCB connector Connect with load CN21 Connector for power N and L CN52 CN27 Connector for ground CN23 Connector for communication between indoor and outdoor unit Connector for fan motor CON1 Connector for fresh air...
  • Page 17 Connector Wiring diagrams N_RC UNIT MODEL PCB MODEL AS09DCAHRA 0011800459 AS12DCAHRA 0011800459 UNIT MODEL DISPLAY MODEL AS09DCAHRA 0011800488 AS12DCAHRA 0011800488 Domestic air conditioner...
  • Page 18 Connector Wiring diagrams CN34 CN51 CN14 CN11 CN57 CN12 CN13 CN36 CN23 CN21 CON1 CON3 CN27 CN52 CON2 Domestic air conditioner...
  • Page 19 Connector Wiring diagrams Domestic air conditioner...
  • Page 20: Functions And Control

    Functions and control 7.Functions 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 room temperature and set temperature D-value .Then will run according to the determined mode.
  • Page 21 Functions and control When Tr is between the Ts and Ts+2 , the outdoor system will be operated 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.
  • Page 22 Functions and control Set speed Max or medium speed low airflow Light airfolw * 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 ‘THHOTo’.
  • Page 23 Functions and control 7.1.7 Timing You can set 24 hours’ on/off timing accordingly. After the setting, the timing indicator will be lightened. Also, the light will be turned 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.
  • Page 24 Functions and control In cooling mode, conversely. If the human sensor running abnormal, please check that if the structure deformed or installed in place. if OK, then check that if the terminal between human sensor module and the PCB connected well. if OK, using multimeter to test the harness which connect the human sensor and the processing board is normal or not .If OK, then replace the module or PCB.
  • Page 25: Value Of Thermistor

    Functions and control 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.
  • Page 26 Functions and control Room sensor and Pipe Sensor R25 =10K B25 /50 =3700K 3% Temp.(( )) Tolerance( ) Max.(KΩ) Normal(KΩ) Min.(KΩ) 165.2170 147.9497 132.3678 -1.94 1.75 155.5754 139.5600 125.0806 -1.93 1.74 146.5609 131.7022 118.2434 -1.91 1.73 138.1285 124.3392 111.8256 -1.89 1.71 130.2371 117.4366...
  • Page 27 Functions and control 20.9688 19.9409 18.9463 -1.13 1.09 20.0176 19.0621 18.1358 -1.11 1.07 19.1149 18.2270 17.3646 -1.08 1.05 18.2580 17.4331 16.6305 -1.06 1.03 17.4442 16.6782 15.9315 -1.03 1.01 16.6711 15.9601 15.2657 -1.01 0.99 15.9366 15.2770 14.6315 -0.98 0.96 15.2385 14.6268 14.0271 -0.96 0.94...
  • Page 28 Functions and control 3.7878 3.5654 3.3531 -1.78 1.70 3.6601 3.4416 3.2332 -1.82 1.74 3.5374 3.3227 3.1183 -1.87 1.78 3.4195 3.2085 3.0079 -1.91 1.82 3.3060 3.0989 2.9021 -1.95 1.85 3.1969 2.9935 2.8005 -2.00 1.89 3.0919 2.8922 2.7029 -2.04 1.93 2.9909 2.7948 2.6092 -2.08 1.97...
  • Page 29 Functions and control 1.0030 0.9061 0.8179 -3.85 3.51 0.9756 0.8806 0.7941 -3.90 3.55 0.9490 0.8558 0.7711 -3.96 3.60 0.9232 0.8319 0.7489 -4.01 3.64 0.8983 0.8088 0.7275 -4.07 3.69 0.8741 0.7863 0.7067 -4.12 3.74 0.8507 0.7646 0.6867 -4.18 3.78 0.8281 0.7436 0.6672 -4.23 3.83...
  • Page 30 Functions and control 82.5577 75.4384 68.8710 -1.72 1.59 78.1230 71.5010 65.3815 -1.70 1.57 73.9543 67.7939 62.0907 -1.68 1.55 70.0342 64.3023 58.9863 -1.66 1.54 66.3463 61.0123 56.0565 -1.64 1.52 62.8755 57.9110 53.2905 -1.62 1.51 59.6076 54.9866 50.6781 -1.60 1.49 56.5296 52.2278 48.2099 -1.58 1.47...
  • Page 31 Functions and control 10.3000 10.0000 9.7000 -0.75 0.75 9.8975 9.5974 9.2980 -0.76 0.76 9.5129 9.2132 8.9148 -0.80 0.80 9.1454 8.8465 8.5496 -0.84 0.83 8.7942 8.4964 8.2013 -0.87 0.86 8.4583 8.1621 7.8691 -0.91 0.90 8.1371 7.8428 7.5522 -0.95 0.93 7.8299 7.5377 7.2498 -0.98 0.97...
  • Page 32 Functions and control 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 1.9714 1.8186 1.6761 -2.68 2.50 1.9113 1.7614 1.6219 -2.73 2.54 1.8533 1.7064 1.5697 -2.78 2.58 1.7974 1.6533 1.5194 -2.83 2.63...
  • Page 33 Functions and control 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 0.5600 0.4968 0.4404 -5.10 4.55 0.5460 0.4841 0.4288 -5.16 4.60...
  • Page 34 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 35 Functions and control 262.0206 242.6161 224.4465 -1.76 1.64 250.2676 232.0436 214.9529 -1.74 1.63 239.0983 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...
  • Page 36 Functions and control 44.7385 43.2468 41.7672 -0.96 0.95 43.2105 41.7248 40.2540 -1.00 0.99 41.7386 40.2604 38.7996 -1.03 1.02 40.3241 38.8545 37.4048 -1.07 1.06 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...
  • Page 37 Functions and control 11.5475 10.7046 9.9142 -2.72 2.55 11.2242 10.3957 9.6197 -2.77 2.59 10.9112 10.0970 9.3352 -2.81 2.63 10.6084 9.8082 9.0602 -2.86 2.67 10.3151 9.5288 8.7945 -2.91 2.71 10.0312 9.2586 8.5378 -2.95 2.75 9.7563 8.9971 8.2895 -3.00 2.80 9.4901 8.7441 8.0495 -3.05 2.84...
  • Page 38: Dimensional Drawings

    Dimensional drawings 8.Dimensional drawings 9.Center of gravity Domestic air conditioner...
  • Page 39: Service Diagnosis

    Seivice 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.
  • Page 40: Error Codes And Description Indoor Display

    Seivice 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 Communication fault between indoor and Page .46 Outdoor outdoor units Room temperature sensor failure Page .36 Indoor Malfunction Heat-exchange sensor failure Page .36...
  • Page 41: Eeprom Abnormal

    Seivice diagnosis When the thermistor input is more than 4.92V or less than 0.08V during compressor Malfunction operation. Detection Conditions Note: The values vary slightly in some models ■ Faulty connector connection Supposed Causes ■ 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.
  • Page 42 Seivice diagnosis * Be sure to turn off power switch before connect or disconnect connector, or parts Troubleshooting damage may be occurred. Replace the indoor or outdoor mainboard. 10.4.3 Indoor DC fan motor fault Indoor Display The rotation speed detected by the Hall IC during fan motor operation is used to Method of determine abnormal fan motor operation Malfunction Detection...
  • Page 43 Seivice diagnosis Turn off power supply and rotate fan by hand Does fan rotate Replace fan motor smoothly? Turn power ON and operate fan Turn power supply and disconnect fan motor Does it rotate? connector,then turn power ON Check output offan motor connector Is motor power voltage DC310V Stop fan motor...
  • Page 44: Outdoor Dc Fan Motor Fault

    Seivice diagnosis 10.4.4 Outdoor DC fan motor fault Outdoor display LED1 flash 9 times DC fan motor is detected by checking the fan running condition and so on Method of Malfunction Detection when the data of EEPROM is error or the EEPROM is damaged Malfunction Detection Conditions Supposed Causes...
  • Page 45: Ipm Protection

    Seivice diagnosis 10.4.5 IPM protection Outdoor display LED1 flash 2 times IPM protection is detected by checking the compressor running condition and so on Method of Malfunction Detection Malfunction ■ The system leads to IPM protection due to over current Detection Conditions ■...
  • Page 46 Seivice diagnosis 10.4.6 Over-current of the compressor Outdoor Display LED1 flash 3 or 24 or 25 times The current of the compressor is too high Method of Malfunction Detection when the IPM Module is damaged or the compressor is damaged. Malfunction power supply voltage is too low or too high Detection Conditions...
  • Page 47: The Communication Fault Between Ipm And Outdoor Pcb

    Seivice diagnosis 10.4.7 The communication fault between IPM and outdoor PCB Outdoor display: LED1 flash 4 times Communication is detected by checking the IPM module and the outdoor PCB Method of Malfunction Detection Malfunction ■ The outdoor PCB broken leads to communication fault Detection Conditions ■...
  • Page 48: Power Supply Over Or Under Voltage Fault

    Seivice diagnosis 10.4.8 Power Supply Over or under voltage fault Outdoor display: LED1 flash 6 times The power supply is over voltage Method of An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. Malfunction Detection Malfunction An voltage signal is fed from the voltage detection circuit to the microcomputer Detection Conditions...
  • Page 49: Overheat Protection For Discharge Temperature

    Seivice diagnosis 10.4.9 Overheat Protection For Discharge Temperature Outdoor display: LED1 flash 8 times 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 ■...
  • Page 50: The Communication Fault Between Indoor And Outdoor

    Seivice diagnosis 10.4.10 The communication fault between indoor and outdoor Indoor display outdoor display LED1 flash 15 times Communication is detected by checking the indoor PCB and the outdoor PCB. Method of Malfunction Detection ■ The outdoor PCB broken leads to communication fault. Malfunction ■...
  • Page 51 Seivice diagnosis Check the indoor mainboard. Measure the voltage between Jumpers 3 and 4 of IC1 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter. If the voltage is of a constant value of 0V DCto5V DC If 230VAC is available but 310DC not, the power module is damaged, replace it...
  • Page 52: Loss Of Synchronism Detection

    Circuit diagrams 10.4.11 Loss of synchronism detection Inverter side current detection is abnormal Outdoor Display LED1 flash 18 times 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 Conditions...
  • Page 53 Circuit diagrams 10.4.12 High work-intense protection Outdoor display LED1 flash 21 times High work-intense control is activated in the heating mode if the temperature Method of being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Detection Activated when the temperature being sensed by the heat exchanger Malfunction Detection Conditions rises above 65...
  • Page 54: Circuit Diagrams

    Circuit diagrams 11.Circuit diagrams Domestic air conditioner...
  • Page 55 Circuit diagrams Domestic air conditioner...
  • Page 56 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 57 Wall Mounted Type DC Inverter FREE MATCH D-Series SERIES:40D...
  • Page 58: Indoor Unit

    Remove of front panel Indoor unit Step Procedure Points 1.Features 2.Remove the front panel Release the three pieces of tape Domestic air conditioner...
  • Page 59 Step Procedure Points Hold the bottom side of front panel and lift it Loosen two 3*8 screw and release the display module and remove the front panel Domestic air conditioner...
  • Page 60 Remove the air filters and horizontal flap Step Procedure Points Lift the right and left air filter upwards slightly and then pull it out downwards Remove the horizontal blade Release the horizontal blade slightly and remove it. Domestic air conditioner...
  • Page 61 Remove the casing Step Procedure Points Loosen one screw and remove the cover Loosen one screw and remove the cover Release three connect terminals at marked area Domestic air conditioner...
  • Page 62 Lift up the three screw covers and then loosen the marked seven screws Release the marked hooks (4EA) on the When assembling, top side of unit and install the front then pull the front grille grille horizontally out horizontally and so as not to stuff remove it the flap inside.
  • Page 63 Release stepping motor (2type) Step Procedure Points Loosen the stepping motor screws (4EA) and then release the stepping motor Removal of Control Box Step Procedure Points Loosen the control Box screws (2EA) And then pull it. Domestic air conditioner...
  • Page 64 Removal of Heat Exchanger Loosen the marked screws(2EA) Pull mounting plate and heat exchanger bracket and then release them. Release the fixture plate from the base frame hook and rotate it Domestic air conditioner...
  • Page 65 Step Procedure Points Loosen the marked screws (5EA) and remove the heat exchanger Remove Fan rotor and Fan Loosen the marked screws(6EA) and release the cover and bracket of fan motor Domestic air conditioner...
  • Page 66 Step Procedure Points Loosen the marked screw (1EA) and remove fan motor and of mechanism modules of front panel Removal Step Procedure Points Loosen the marked screws(4EA) and remove the mechanism modules of front panel Domestic air conditioner...
  • Page 67 of sensor modules Removal Step Procedure Points Release the hook of cover and remove the module Domestic air conditioner...