Haier AS12GB3HRA Service Manual
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Haier AS12GB3HRA Service Manual

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SERVICE MANAUL
Wall Mounted Type
Model No.
AS12GB3HRA
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
2013 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Version V1
Date 2013-09-10

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Summary of Contents for Haier AS12GB3HRA

  • Page 1 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2013 (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 ..................8 4. Sensors list.................... 9 5. Piping diagrams ..................10 6. Printed Circuit Board Connector Wiring Diagram........11 7. Functions and Control ................8. System configuration................9. Dimensional drawings ................10.

  • Page 3: Introduction

    Intuoduction 1 Introduction 1.1 Model name explanation Apply toT1; 220~240V50HZ/1ph DC inverter Indoor unit Version number 35G platform Platform of indoor units: G (G platform) Nominal cooling capacity (12000BTU/h) Type of indoor unit: S (wall-mounted) Indoor unit Domestic air conditioner...
  • Page 4 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 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 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 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

    Specifications 2.Features 4 Fan setting :Select the fan speed LO,MED,HI,AUTO Anti-mold filter: Catches most small particles and remove unpleasant odors effectively. Sleep mode: The setting temperature and the indoor noise can be adjusted to a more comfortable level when you set the “sleep mode” during night sleep. 24Hour timer: Use the timer function to set on,or off,or from on to off,or from off to on Auto restart: Automatic return to previous operation conditions after sudden power blackout Easy clean design: The panel is easy to wash and the airflow vents can be detached easily...

  • Page 10: Specifications

    Specifications 3 Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT cooling heating 3.5(1.0-4.1) 3.7(1.1-5.2) Capacity rated Btu/h 11940(3400-14000) 12630(3750-17750) Power Consumption(Ra .163 ³ 1.6*10 ³ TECHNICAL SPECIFICATIONS × × × × Sound dB(A) 43/38/35 42/38/35 peessure(Hi/Mid/Lo) Sound level dB(A) (High) Domestic air conditioner...

  • Page 11: Sensors List

    Specifications TECHNICAL SPECIFICATIONS-PARTS cooling heating Air flow rate(high) m³/h Speed(Hi/Mid/Lo ) 1200/1040/880 1130/980/830 Type ML fin- 7HI-HX tube Heat exchanger c t i t,Left,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 Pinping diagrams 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 AS09/12GB3HRA series PCB connector Connect with load Connector for fan motor and feedback CN27 Connector for heat exchanger thermistor and Room temperature thermistor CN11 Connector for UP&DOWN STEP motor CON2 Connector for power N wire CON1...
  • Page 14 Connector Wiring diagrams PCB(1) CN11 CN27 CN32 CN26 CN20 CON1 CN36 CON2 CON6 CN30 CON8 CN34 CON7 CN31 Domestic air conditioner...

  • Page 15: Wiring Diagrams

    Connector Wiring diagrams Wiring diagrams louver motor Romm Card Domestic air conditioner...

  • 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 Dehumidifying mode. * temperature control range: 16---30 * temperature difference: Control feature: send the dehumidifying 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 dehumidifying frequency for 10 minutes and then at the low dehumidifying 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 7.1.20 Time cutting function: Connect the test program terminal on the mainboard after connecting the system to the power circuit. The CPU of the main control will be 60 times faster. 7.2 Value of thermistor Room sensor and Pipe Sensor R25 =10K B25 /50 =3700K 3% Temp.(( ))
  • Page 24 Functions and Control 29.2545 27.5519 25.9250 -1.29 1.24 27.8708 26.2858 24.7686 -1.27 1.22 26.5605 25.0851 23.6704 -1.25 1.20 25.3193 23.9462 22.6273 -1.23 1.18 24.1432 22.8656 21.6361 -1.20 1.16 23.0284 21.8398 20.6939 -1.18 1.14 21.9714 20.8659 19.7982 -1.15 1.12 20.9688 19.9409 18.9463 -1.13 1.09...
  • Page 25 Functions and Control 4.8400 4.5905 4.3500 -1.49 1.44 4.6708 4.4252 4.1887 -1.53 1.47 4.5083 4.2666 4.0342 -1.57 1.51 4.3524 4.1145 3.8862 -1.61 1.55 4.2026 3.9686 3.7443 -1.65 1.59 4.0588 3.8287 3.6084 -1.70 1.62 3.9206 3.6943 3.4780 -1.74 1.66 3.7878 3.5654 3.3531 -1.78 1.70...
  • Page 26 Functions and Control 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 1.0910 0.9882 0.8942 -3.69 3.37 1.0607 0.9599 0.8679 -3.74 3.42 1.0314 0.9326 0.8424 -3.80 3.46 1.0030 0.9061 0.8179 -3.85 3.51...

  • Page 27: System Configuration

    System configuration 8 System configuration 8.1System configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling(or heating) well, and to know a clever method of using it.

  • Page 28: Indoor Unit

    System configuration Parts and Functions Indoor Unit Remote controller Additional functions display Supplemented electrical Operation mode QUIET SLEEP HEALTH TURBO heating Remote controller Inlet Air Purifying Filter (inside) 9. QUIET button 10. HEAT button 11. COOL button Inlet grille 12. AUTO button Emergency 13.

  • Page 29: Emergency Operation

    System configuration Operation Base Operation Emergency operation and test operation Emergency Operation: Use this operation only when the remote controller is defective or lost, and with function of emergency running, air conditoner Remote controller can run automatically for a while. When the emergency operation switch is pressed, the "...
  • Page 30 System configuration Operation Sleep Operation 4. In FAN mode It has no SLEEP function. Press button to enter additional options, when 5.Set the wind speed change when sleeping cycle display to will flash. And then press If the wind speed is high or middle before setting for the enter to sleep function.
  • Page 31 System configuration EUROPEAN REGULATIONS Operation CONFORMITY FOR THE MODELS Timer On/Off On-Off Operation All the products are in conformity with the following European provision: 1.After unit starts, select your desired operation mode. - Low Voltage Directive 73/23/EEC 2.Press TIMER button to change TIMER mode. Every - Low Voltage Directive 2006/95/EC time the button is pressed, display changes as follows: -Electomagnetic CompatibilitY 89/336/EEC...
  • Page 32 System configuration Maintenance For Smart Use of The Air Conditioner Remote Controller Indoor Body Setting of proper room Do not block the air inlet temperature or outlet Proper Wipe the air conditioner by using a soft and temperature dry cloth.For serious stains,use a neutral Do not use water wipe the controller with a detergent diluted with water.Wring the water dry cloth.Do not use glass cleaner or chemical...
  • Page 33 System configuration Cautions WARNING Please call Sales/Service Shop for the Installation. Do not attempt to install the air conditioner by yourself because improper works may cause electric shock, fire, water leakage. WARNING Check proper When abnormality such as burnt-small found, Use an exclusive immediately stop the operation button and installation of the...
  • Page 34 System configuration Maintenance For Smart Use of The Air Conditioner Remote Controller Indoor Body Setting of proper room Do not block the air inlet temperature or outlet Proper Wipe the air conditioner by using a soft and temperature dry cloth.For serious stains,use a neutral Do not use water wipe the controller with a detergent diluted with water.Wring the water dry cloth.Do not use glass cleaner or chemical...

  • Page 35: Dimensional Drawings

    Seivice diagnosis 9.Dimensional drawings Unit:mm 10.Center of gravity Unit:mm Domestic air conditioner...

  • Page 36: Service Diagnosis

    Seivice diagnosis 11 Service Diagnosis 11.1 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 37 Service diagnosis Code indication Indoor Reference Outdoor fault description displaying Page (LED1 flash panel code times) indication Indoor and Communication fault between indoor and Page46 . Outdoor outdoor units Room temperature sensor failure Page36 . Indoor Malfunction Heat-exchange sensor failure Page36 .
  • Page 38 Service diagnosis 11.4.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: 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 are detected by the thermistror which are used to...
  • Page 39 Service diagnosis 11.4.2 Indoor AC fan motor malfunction Indoor Display Method The fan speed detected by the Hall IC during fan motor running which is used malfunction to determine the fan motor operating detection Malfunction When there is no fan speed feedback signal within 2 minutes detection conditions Operation stops due to fan motor wiring disconnection...
  • Page 40 Service diagnosis 11.4.3 Indoor DC fan motor malfunction Indoor Display Method The fan speed detected by the Hall IC during fan motor running which is used malfunction to determine the fan motor operating detection Malfunction When there is no fan speed feedback signal within 2 minutes detection conditions Operation halt due to breaking of wire inside the fan motor...
  • Page 41 Service diagnosis Turn off power supply and rotate fan by hand Replace fan motor Turn power on and operate the fan Turn off power supply and disconnect fan Does it rotate? motor connector, then turn power on Check output of fan motor connector Is motor power voltage DC310V generated? Stop fan motor...
  • Page 42 Service diagnosis .4.4 Outdoor DC fan motor fault Indoor Display Outdoor display Outdoor LED1 flash 9 times Method The fan speed detected by the Hall IC during fan motor running which is used malfunction to determine the fan motor operating detection Malfunction When there is no fan speed feedback signal within 2 minutes...
  • Page 43 Service diagnosis Measure the voltage between 1 and 3 of the terminal of fan motor on the PCB about DC310V, Measure the voltage between 3 Measure the voltage between 3 and 4 of and 6 of the terminal about 0-5v. the terminal about DC15V.
  • Page 44 Service diagnosis Turn off the power. check if the Reconnect the wiring compressor wiring connected ok or not Check the IPM module Change the IPM Test the resistance values among Replace the phases U, V and W of compressor, is compressor the resistance is about 1 ? Check the installation condition...
  • Page 45 Service diagnosis 11.4.6 The communication fault between IPM and outdoor PCB Indoor display Outdoor display: LED1 flash 4 time 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 detection The IPM module broken leads to communication fault conditions...
  • Page 46 Service diagnosis 11.4.7 Overheat Protection For Discharge Temperature Indoor display Outdoor display: LED1 flash 8 time Method of The discharge temperature control is checked with the temperature being detected by malfunction the discharge pipe thermistor. detection Malfunction When the compressor discharge temperature is above 117 detection conditions Electronic expansion valve defective...
  • Page 47 Service diagnosis The sensor is damaged. Replace the The results deviate much? sensor with a new one. The outdoor PCB is damaged and need to be replaced 11.4.8 EEPROM abnormal Indoor display Indoor EEPROM error Outdoor EEPROM error Indoor display Outdoor display: LED1 flash 1 time Method of...
  • Page 48 Service diagnosis 11.4.9 Communication error between the indoor and outdoor units Indoor display Outdoor display: LED1 flash 15 time Method of Check whether the signal which is transmitted between indoor and outdoor malfunction unit is normal detection Malfunction When the communication-signal cannot be received normally, or when the detection content of the signal abnormal.
  • Page 49 Service diagnosis Check the indoor PCB. Measure the voltage between Jumpers 3 and 4 of IC1 on the indoor PCB with a multimeter Test the outdoor power supply (230VAC and +310VDC) with a multimeter. Whether voltage is of a constant value of 0V DC to If 230VAC is available but 5V DC 310DC not, the power...
  • Page 50 Service diagnosis 11.4.10 Power Supply over or under voltage fault Indoor display Outdoor display: LED1 flash 6 times Method of An abnormal voltage rise or fall is detected by specified voltage checking malfunction detection circuit detection Malfunction An voltage signal is feedback from the voltage detection circuit to the detection microcomputer conditions...
  • Page 51 Service diagnosis 11.4.11 Loop of the station detect error Outdoor display LED1 flash 18 times Indoor Display F11 LED1 flash 7 times Indoor Display F27 LED1 flash 19 times Indoor Display F28 Method of The position of the compressor rotor can’t detected normally malfunction detection Malfunction...
  • Page 52 Service diagnosis Over-current of the compressor .4.12 Outdoor display LED1 flash 3 times Indoor Display F22 LED1 flash 24 times Indoor Display F2 LED1 flash 25times Indoor Display F23 Method of The current of the compressor is too high malfunction detection The IPM Module is damaged;...
  • Page 53 Service diagnosis High work-intense protection 11.4.13 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 exceeds detection twice in 30 minutes.
  • Page 54 Service diagnosis 11.4.14 Mismatching between indoor and outdoor units Indoor display Outdoor display: LED1 flash 46 times Method of The malfunction is determined by the communication protocol malfunction detection Malfunction Indoor and outdoor units are mismatching. detection conditions Supposed causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or else...
  • Page 55 Service diagnosis Activated when the temp. which being sensed by the room temperature Malfunction sensor, is 4 lower than heat-exchanger temp. in cooling or dehumidifying detection mode, or heat-exchanger temp. is lower than room temp. in heating conditions mode,twice in 30 minutes. Supposed Short of refrigerant causes...

  • Page 56: Circuit Diagrams

    Circuit diagrams 12. Circuit diagrams HTVSB7.0CA-100 NET_TX NET_RX PIPE ROOM Domestic air conditioner...
  • Page 57 Circuit diagrams 2 2 0 V _ L G N D Domestic air conditioner...
  • Page 58 Circuit diagrams Domestic air conditioner...

  • Page 59: Removal Procedure

    Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2013 (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 Air Filter Domestic Air Condition...
  • Page 61 Removal of procedure Please embed the air filters into the unit along the grooves as installation. Please embed the two hooks on air filter completely into the unit during installation. Domestic Air Condition...
  • Page 62 Removal of procedure 2.Removal of front panel until it is on the horizontal position, and then release the pivots on both sides of the unit to remove the front panel. Please close the panels before start the removal procedure of front grille. one side to another to release each axis.
  • Page 63 Removal of procedure HOOKS three Domestic Air Condition...
  • Page 64 Removal of procedure 3.Removal of horizontal flap flap flap flap flap Domestic Air Condition...
  • Page 65 Removal of procedure 4.Removal of Drain pan Domestic Air Condition...
  • Page 66 Removal of procedure 5.Removal of vertical blades and swing motor Domestic Air Condition...
  • Page 67 Removal of procedure 6.Removal of Electrical Box Domestic Air Condition...
  • Page 68 Removal of procedure 7.Removal of Heat Exchanger Domestic Air Condition...
  • Page 69 Removal of procedure Domestic Air Condition...
  • Page 70 Removal of procedure 8.Removal of Fan Rotor and Motor Domestic Air Condition...
  • Page 71 Removal of procedure Domestic Air Condition...

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