Haier AS18JDJHRA Service Manual
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Haier AS18JDJHRA Service Manual

Wall mounted type dc inverter
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This servic e informatio n is designed for experience d repai r technician s only and is not designe d for use by the genera l public.
It doe s not contai n warning s or caution s to advise non-technic al individu als of potentia l dangers in attemptin g to servic e a product.
Product s powered by electricit y shoul d be service d or repaire d only by experience d professiona l technicia ns. Any attemp t to service or
Repai r the produc t or product s deal t with in this servic e infor mation by anyone else could result in seriou s injury or death
SE RVICE MANUAL
Model No.
WARNING
All rights reserved. Unauthorized copying and distribution is a violation of law
Wall Mounted Type
DC Inverter
AS50JDJHRA-W
AS18JDJHRA
FAN
QUIET
COOL
HEAT
PURIFY
2019 (Qingdao Haier Air Conditioner General corp. , Ltd)
Version V1
Date 20190409

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  • Page 1 Repai r the produc t or product s deal t with in this servic e infor mation by anyone else could result in seriou s injury or death 2019 (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 for contents Contents 1. Introduction .................... 1 2. Features ....................7 3. Specifications ..................8 4. Sensors list.................... 9 5. Piping diagrams ..................10 6. Printed Circuit Board Connector Wiring Diagram........11 7. Functions and Control ................8. Dimensional drawings ................9.

  • Page 3: Introduction

    Introduction 1. Introduction 1.1 Model name explanation Apply toT1; 220~240V50HZ/1ph Heat pump & R410A refrigerant Version number Platform of indoor units:D Platform Series of indoor unit s: J-Series Nominal cooling capacity (18000BTU/h) Type of indoor unit: S (wall-mounted) Indoor unit 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 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: Features

    LED Display Bottom Cover Repair Motor Piping Design Reliable PCB Special designed panel and Haier PCB is tested 96 It is more convenient With only opening It can realize motor The indoor unit o ers The LED display of the...

  • Page 10: Specifications

    Specifications 3 Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT cooling heating 5.2(1.4-6.0) 6.0(1.4-6.9) Capacity rated Btu/h 17750(4780-20470) 20470(4770-23550) Power Consumption(Ra 1401 ³ 2.0*10 ³ TECHNICAL SPECIFICATIONS W*D*H 1050X235X350 W*D*H 1150X347X455 14.9 18.9 Sound 41/37/33 41/37/33 peessure(high/medium/low) Sound level Sound power(high) Domestic air conditioner...

  • Page 11: Sensors List

    Specifications TECHNICAL SPECIFICATIONS-PARTS cooling heating r o output Air flow rate(high) m³/h Speed(high/middle/low) 10 0/ /750 Type ML fin- 7HI-HX tube Heat exchanger c t i Horizontal,Downward Removable/Washable/Mildew Proof Air filter Microcomputer Control Temperature control l l o Note: the data are based on the conditions shown in the table below Conversation formulae n i l Kcal/h= KW×860...

  • Page 12: Piping Diagrams

    Piping diagrams 5 Piping diagrams ＥＥＶ ＥＥＶ Domestic air conditioner...

  • Page 13: Printed Circuit Board Connector Wiring Diagram

    Connector Wiring diagrams 6. Printed Circuit Board Connector Wiring Diagram Connectors PCB(1) (Control PCB) For 1) CN9 Connector for fan motor 2) CN6 Connector for heat exchanger thermistor and Room temperature thermistor Connector for UP&DOWN STEP motor 4) CN11 Connector for L&R STEP motor 5) CN21 Connector for power N wire 6) CN17 Connector for power L(In) CN22...
  • Page 14 Connector Wiring diagrams CN35 CN18 CN11 CN49 CN25 CN56 CN16 CN50 CN12 CN15 Domestic air conditioner...
  • Page 15 Connector Wiring diagrams Wiring diagrams INDOOR UNIT DIAGRAM 0011504830 ANION GENERATOR FUSE C N 4 3 C N 4 4 C N 21 C N 1 7 DC FAN MOTOR C N 22 JP 1 UP-DOWM C N 5 TIME LAG STEPMOTOR C N 23 ' Y / G...

  • Page 16: Functions And Control

    Functions and Control 7.Funcitions 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 current room temperature and then will run according to the determined mode. Tr in the following selection conditions means room temperature, Ts means setting temperature, Tp means temperature of indoor coil pipe Tr 23...
  • Page 17 Functions and Control 7.1.3 Demoisture mode. * temperature control range: 16---30 * temperature difference: Control feature: send the demoisture signal to the outdoor system. When Tr>Ts+2 , the compressor will be turned on, the indoor fan will operate at the set speed. When Tr is between the Ts and Ts+2 , the outdoor system will operate at the high demoisture frequency for 10 minutes and then at the low demoisture mode for six minutes.
  • Page 18 Functions and Control *Indoor fan control manual control: You can choose high, medium, low and automatic speed control. Automatic: When Tr<Ts, high speed. When Ts Tr Ts+2 , medium speed. When Tr> Ts+2 , low speed. When the airflow speed has no delay from the high to low switching, the speed should be delayed for 3 minutes (remain at high speed for 3 minutes.) before the next switch.
  • Page 19 Functions and Control When the system is at the automatic option with the strength/ mute function, if the system enters the cooling mode, the cooling strength/ mute function will be offered; if the system enters the heating mode, then the heating strength/ mute function will be offered;...
  • Page 20 Functions and Control and then close down. 2.3 During the dormant time, except the change of the system mode or a new press on the dormant setting keys, the timing of the 8 hours dormancy will take the first timing as the start time, any presses on other keys will not affect the original timing.
  • Page 21 Functions and Control controlled by the thermostat. The outdoor system can be restarted when the coil temperature is below 42 and the system has been stopped for 3 minutes. The malfunction will be stored in the malfunction resume and will not be revealed. 7.1.13 Abnormal operation of indoor system When the outdoor system operates, if the indoor system operation differs from the outdoor system, the abnormal operation malfunction will be reported.
  • Page 22 Functions and Control keys for 6 times within 7 seconds, the system will feedback with 6 rings. * After the system enters the separate indoor system operation mode, the indoor system will operate according to the set mode and neglect the communication signals of the outdoor system. However, it has to send signals to the outdoor system.
  • Page 23 Functions and Control 7.1.21 Precise dehumidification: In the hot weather in summer, it is necessary to regulate the ambient temperature and the regulation of humidity. Appropriate temperature and humidity control can give people a comfortable feeling, inhibit the growth of bacteria and molds in the environment.
  • Page 24 Functions and control 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 32.2608 30.2968 28.4267 -1.34 1.28 30.7162 28.8875 27.1431 -1.32 1.26...
  • Page 25 Functions and control 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 5.0163 4.7630 4.5185 -1.45 1.40 4.8400 4.5905 4.3500 -1.49 1.44 4.6708 4.4252 4.1887 -1.53 1.47...
  • Page 26 Functions and control 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 1.2226 1.1113 1.0092 -3.48 3.19 1.1880 1.0789 0.9789 -3.53 3.24 1.1546 1.0476 0.9497 -3.58 3.28 1.1223 1.0174 0.9215 -3.64 3.33...
  • Page 27 Functions and Control Room Sensor R25 =23K B25 /50 =3700K 3% Temp 阻值resistance（KΩ ） (resist.tol) 温 度 偏 差 ℃ （℃） Rmax R(t)Normal Rmin MAX(+) MIN(-) MAX(+) MIN(-) 538.771 513.115 487.459 5.00 5.00 0.75 0.75 502.577 478.894 455.211 4.95 4.95 0.75 0.75 469.290...
  • Page 28 Functions and control 72.377 70.133 67.889 3.20 3.20 0.61 0.61 68.520 66.430 64.340 3.15 3.15 0.60 0.60 64.889 62.943 60.997 3.09 3.09 0.59 0.59 61.470 59.659 57.848 3.04 3.04 0.59 0.59 58.253 56.566 54.879 2.98 2.98 0.58 0.58 55.222 53.651 52.080 2.93 2.93...
  • Page 29 Functions and control 12.572 12.252 11.932 2.61 2.61 0.62 0.62 12.048 11.736 11.424 2.66 2.66 0.63 0.63 11.548 11.244 10.940 2.70 2.70 0.65 0.65 11.072 10.776 10.480 2.74 2.74 0.66 0.66 10.617 10.329 10.041 2.79 2.79 0.68 0.68 10.184 9.904 9.624 2.83 2.83...
  • Page 30 Functions and control 3.122 2.997 2.872 4.19 4.19 1.23 1.23 3.017 2.895 2.773 4.23 4.23 1.26 1.26 2.918 2.798 2.678 4.28 4.28 1.27 1.27 2.821 2.704 2.587 4.32 4.32 1.30 1.30 2.728 2.614 2.500 4.36 4.36 1.33 1.33 2.639 2.528 2.417 4.41 4.41...

  • Page 31: Dimensional Drawings

    Service diagnosis 8.Dimensional drawings 1050 65mm Ø 65mm Ø 43.2 9.Center of gravity 1050 103.8 Domestic air conditioner...

  • Page 32: 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 33 Service diagnosis 10.3 Error Codes and Description indoor display Code indication Indoor displaying panel code indication Outdoor Reference fault description (LED1 Page Only For 498 and flash 498A display Other times) (Red/Green Time Run display Indoor and Communication fault Outdoor between indoor Page .39...
  • Page 34 Service diagnosis 10.3.1 Thermistor or Related Abnormality Indoor Display E01: Room temperature sensor failure E02: Heat-exchange sensor failure Outdoor display 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 temperature sensor failure Method of The temperatures detected by the thermistors are used to determine thermistor errors...
  • Page 35 Service diagnosis 10.3.2 EEPROM abnormal Indoor Display E04: Indoor EEPROM error Indoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times Method of The 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...
  • Page 36 Service diagnosis 10.3.3 Indoor DC fan motor malfunction Indoor Display ■ □ ★/E14 Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation Detection Malfunction when the detected rotation feedback signal don’t received in 2 minutes Decision Conditions Supposed...
  • Page 37 Service diagnosis 10.3.4 Outdoor DC fan motor fault Outdoor display LED1 flash 9 times Method of DC fan motor is detected by checking the fan running condition and so on Malfunction Detection Malfunction Decision when the detected rotation feedback signal don’t received in 2 minutes Conditions Supposed DC fan motor protection dues to the DC fan motor faulty...
  • Page 38 Service diagnosis Check whether Terminal on the outdoor mainboard is well inserted. it is normal Reinsert the terminals Electrify the machine again and turn it on in The motor and the Cool state with the remote controller. outdoor pcb are check whether the motor could run.
  • Page 39 Service diagnosis 10.3.5 IPM protection Outdoor display: / F01 LED1 flash 2 times Method of IPM protection is detected by checking the compressor running condition and so on Malfunction Detection Malfunction The system leads to IPM protection due to over current Decision The compressor faulty leads to IPM protection Conditions...
  • Page 40 Service diagnosis 10.3.6 Over-current of the compressor Outdoor Display: F02 LED1 flash 3 or 24 or 25 times Method of The current of the compressor is too high Malfunction Detection Malfunction when the IPM Module is damaged Decision or the compressor is damaged. Conditions power supply voltage is too low or too high Supposed...
  • Page 41 Service diagnosis 10.3.7 The communication fault between IPM and outdoor PCB 0 LED1 flash 4 times Outdoor display: Method of Communication is detected by checking the IPM module and the outdoor PCB Malfunction Detection Malfunction The outdoor PCB broken leads to communication fault Decision The IPM module broken leads to communication fault Conditions...
  • Page 42 Service diagnosis 10.3.8 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...
  • Page 43 Service diagnosis 10.3.9 Overheat Protection For Discharge Temperature Outdoor display: F04 LED1 flash 8 times Method of The Discharge temperature control is checked with the temperature being detected Malfunction by the Discharge pipe thermistor Detection Malfunction when the compressor discharge temperature is above 110 Decision Conditions Supposed...
  • Page 44 Service diagnosis 10.3.10 The communication fault between indoor and outdoor Indoor display 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. Decision The indoor PCB broken leads to communication fault.
  • Page 45 Service diagnosis If the voltage is a constant value The indoor mainboard is of 0V DC to 5V DC.Or the voltage damaged; replace it with a between Communication line(red ) and N(white new one. line) is not close to18V DC when only indoor charged. Test the outdoor power is Check the cable supply 230VAC with a...
  • Page 46 Service diagnosis 10.3.11 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 Malfunction when the wiring of compressor is wrong or the connection is poor; Decision or the compressor is damaged Conditions...
  • Page 47 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 Malfunction being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger Decision rises above 65 twices in 30 minutes.

  • Page 48: Circuit Diagrams

    Circuit diagrams 11. Circuit diagrams Domestic air conditioner...
  • Page 49 Circuit diagrams Domestic air conditioner...
  • Page 50 Circuit diagrams Sincere Forever Haier Group Edited by : Wang fang Haier Industrial Park, No.1, Haier Road Yang Xiaodong 266101, Qingdao, China_ Signed by : Yang Wenjun Http //www.haier.com Approved by: Wu Hongjin Domestic air conditioner...
  • Page 51 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2019 (Qingdao Haier Air Conditioner General corp. , Ltd) All rights reserved. Unauthorized copying and distribution is a violation of law...
  • Page 52 Remove of front panel Indoor unit Step Procedure Points ● 1.Features 2.Remove the front panel ● Release the three pieces of Cushion block...
  • Page 53 Step Procedure Points Hold the bottom side of front panel and lift it Loosen one screw and release the display module and remove the ● front panel...
  • Page 54 Remove the air filters and horizontal flap Step Procedure Points Lift the right and left ● filter upwards slightly and then pull it ● downwards Remove the horizontal blade ● Release the horizontal blade slightly and ● remove it.
  • Page 55 Remove the casing Step Procedure Points Loosen one screw remove cover Loosen one screw and remove the cover Loosen screw s and ● remove the cover ●...
  • Page 56 Release connect terminals ■When assembling, install the front grille horizontally Lift up the three so as not to stuff screw covers and the flap inside. ■When then loosen the marked seven assembling, screws make sure the four hooks caught properly. Release the marked ●...
  • Page 57 Release stepping motor (2type) Step Procedure Points Loosen the stepping ● motor screws and then release the stepping motor. Removal of Control Box ● Step Procedure Points Loosen the control Box screw and then ● pull it.
  • Page 58 Removal of Heat Exchanger Loosen the marked Screws. Pull mounting plate and heat exchanger bracket and then release them. Release the fixture plate from the base frame hook and rotate it Loosen the marked ● screws and remove the heat exchanger...
  • Page 59 Remove Fan rotor and Fan Loosen the marked screws(6EA) and release the cover and bracket of fan motor Loosen the marked screw (1EA) and ● remove fan motor ● and fan...
  • Page 60 of mechanism modules of front panel Removal Step Procedure Points Loosen the marked screws and remove the mechanism modules of front panel...

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