Haier AS12TB3HAA Service Manual
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Haier AS12TB3HAA Service Manual

Wall mounted type
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SERVICE MANUAL
Wall Mounted Type
ON/OFF
T-Series
Model No.
AS12TB3HAA
HSU-12HT03/R2
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
2015 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version V1
Date 2015-12-09

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Summary of Contents for Haier AS12TB3HAA

  • Page 1 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2015 (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. 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:B Platform Series of indoor units: T-Series Nominal cooling capacity (12000BTU/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

    Features 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 n i l Capacity rated 11600 11600 Btu/h 1.06 0.94 ³ 1.4*10 ³ TECHNICAL SPECIFICATIONS 865 200*290 Packaged Dimensions 954*279*355 12.2 White Sound dB(A) 37/34/32 37/34/32 peessure(Hi/Mid/Lo) Sound level dB(A) Sound power(high) Domestic air conditioner...

  • Page 11: Sensors List

    Specifications TECHNICAL SPECIFICATIONS-PARTS cooling heating Air flow rate(high) m³/h 1150/1050/950 1100/1000/900 Speed(Hi/Mid/Lo) Type ML fin- 7HI-HX tube Heat exchanger c t i Air filter Removable/Washable/Mildew Proof Temperature control Microcomputer 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 Domestic air conditioner...

  • Page 13: Printed Circuit Board Connector Wiring Diagram

    Connector Wiring diagrams Wiring Diagrams 0010564852 TRANSFORMER CON2( R ) CON3( W ) FAN MOTOR FUSE1 UP-DOWN STEPMOTOR RECEIVER DISPLAY EMERGENCY SWITCH CN35 AMBIENT TEMP.SENSOR CN36 PIPING TEMP.SENSOR Domestic air conditioner...
  • Page 14 Functions and control 7 Functions and control 7.1 main functions and control specifications Including brief introduction to air conditioners of series models and electric control function. 7.1.1 Automatic running Automatic running mode 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.

  • Page 15: Functions And Control

    Functions and control low, there is a 3-minutes delay before conversion. Manual operation:When unit is on the wind speed can be set to high, medium, low or automatic as required (execute instruction 2 seconds later after receiving remote signal) Compressor control The compressor can’t be controlled by temperature sensor within 2 minutes after start up and can be only restarted at least 3 minutes later after shutdown.
  • Page 16 Connector Wiring diagrams 6.Printed Circuit Board Connector Wiring Diagram Indoor unit Connectors Indoor PCB CN1 CN3 connector for transformer connector for power line connector for transformer output CN5‘ connector for up and down step motor. connector for ambient temp. sensor and piping temp.sensor. connector for display board connector for AC fan feedback motor.
  • Page 17 Functions and control When Tr Ts, compressor, four-ways valve and outdoor fan motor is on, indoor fan motor runs as in cold blast mode, and 4 of compensation is added after compressor is started. When Tr Ts+5 , compressor is off, and the indoor fan motor runs as in warm blast mode. When Tr<Ts+5 , compressor, four-ways valve and outdoor fan motor is on, and the indoor fan motor runs as in the mode of avoiding cold blast.
  • Page 18 Functions and control coil pipe is below -4 , compressor and air outlet stop, and air inlet runs according to the temp. setting. Compressor can be restarted 3 minutes later. 7.1.5.3 Defrosting: 7.1.5.3.1 Entry conditions of defrosting: The entry conditions of defrosting is classified into two types: intelligentized defrosting and sensor defrosting.
  • Page 19 Functions and control timer mode as follows. 7.1.6.1 Timer on: The LED of “timer on” lights up, and unit behaves with halt status. Timer on is completed, and then unit starts running with the LED of “timer on” off. The unit starts with the the last setting receiving timer signals, and sleep setting is not allowed.
  • Page 20 Functions and control 7.1.9 Test run: 7.1.9.1 The temperature sensor of inlet air doesn’t work, and compressor starts (but subject to the limit of -minute delay excluding the first time), and high wind, cooling, and air door is open.The indoor fan motor runs, running indicator lights up, compressor relay and the one of outdoor fan motor is closed 7.1.9.2 During test run: The prevention of freezing of evaporator doesn’t work.
  • Page 21 Functions and control 199.8093 181.4531 164.5813 -1.66 1.53 187.8698 170.9169 155.3033 -1.64 1.51 176.7176 161.0578 146.6059 -1.62 1.49 166.2961 151.8284 138.4495 -1.60 1.48 156.5532 143.1847 130.7973 -1.58 1.46 147.4409 135.0863 123.6153 -1.56 1.44 138.9148 127.4956 116.8717 -1.53 1.43 130.9337 120.3778 110.5374 -1.51 1.41...
  • Page 22 Functions and control 19.0285 18.2581 17.4974 -0.93 0.92 18.2094 17.4484 16.6988 -0.97 0.95 17.4302 16.6792 15.9410 -1.00 0.99 16.6885 15.9480 15.2217 -1.04 1.02 15.9825 15.2530 14.5389 -1.08 1.06 15.3103 14.5920 13.8903 -1.12 1.09 14.6700 13.9632 13.2743 -1.16 1.13 14.0599 13.3650 12.6889 -1.20 1.16...
  • Page 23 Functions and control 3.4150 3.1072 2.8237 -2.82 2.60 3.2993 2.9987 2.7222 -2.87 2.64 3.1881 2.8946 2.6249 -2.92 2.68 3.0812 2.7946 2.5316 -2.97 2.73 2.9785 2.6986 2.4420 -3.02 2.77 2.8796 2.6063 2.3560 -3.07 2.81 2.7845 2.5176 2.2735 -3.12 2.86 2.6931 2.4324 2.1943 -3.17 2.90...
  • Page 24 Functions and control 0.8734 0.7618 0.6637 -5.24 4.61 0.8495 0.7404 0.6445 -5.30 4.66 0.8263 0.7196 0.6258 -5.36 4.71 Pipe Sensor R25 =10K ±3% B25 /50 =3700K±3% Temp.(( )) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 165.2170 147.9497 132.3678 -1.94 1.75 155.5754 139.5600...
  • Page 25 Functions and control 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 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...
  • Page 26 Functions and control 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 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...
  • Page 27 Functions and control 1.0314 0.9326 0.8424 -3.80 3.46 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...

  • Page 28: Dimensional Drawings

    Service diagnosis 8.Dimensional drawings unit:mm 200.0 9.Center of gravity unit:mm 200.0 95.0 Domestic air conditioner...

  • Page 29: Service Diagnosis

    Service 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 30 Service diagnosis 10.4Codes and Description 10.4.1.Problem Symptoms and Measures Symptom Check Item Details of Measure Check to make sure that the rated voltage is None of the units Check the power supply. supplied. operates Check the indoor PCB Check to make sure that the indoor PCB is broken Equipment operates but does Diagnosis...
  • Page 31 Service diagnosis Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. Check the connector connection. Correct the connection Is it normal? Thermistor resistance check Replace the thermistor Is it normal? Replace the indoor unit PCB Thermistor resistance check method:...
  • Page 32 Service diagnosis 10.4.2.3 Indoor AC fan motor malfunction Indoor Display Method of Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction Malfunction abnormal fan motor operation Detection Detection Malfunction When the detected rotation feedback si g nal don’t received in 2 minutes Malfunction Decision Detection...

  • Page 33: Circuit Diagrams

    Circuit Diagram 11.Circuit Diagram 0805 0603 0805 0603 OFF ON +12V 317 325 321 3.3K 3.3K +12V CN5'' 1_8_D 1_27_RXD1 3.3K 3.3K RLS4148 1_7_C CN36 1_6_B SS8050LT1 10nF B3B-XH-A - 2SA1037AK 1_5_A S5B-PH- R39 2K RLS4148 100nF 1_26_TXD1 4.7K ULN2003A SS8050LT1 +12V 100nF...
  • Page 34 Sincere Forever Haier Group Edited by : Xu Feifei Haier Industrial Park, No.1, Haier Road Yang Xiaodong 266101, Qingdao, China_ Signed by : He shiquan Http //www.haier.com Approved by: Wu Hongjin Domestic air conditioner...
  • Page 35 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2015 (Qingdao Haier Air Conditioner General corp. , Ltd) All rights reserved. Unauthorized copying and distribution is a violation of law...
  • Page 36 Removal Procedure Removal of front panel front panel Remove the foam cushion Loosen the screw Domestic Air Conditioner...
  • Page 37 Removal Procedure Lift up the control box cover Loosen the screw Lift up the control box cover Domestic Air Conditioner...
  • Page 38 Removal Procedure Removal of front panel Pull the wires out of the control box and then release the pivots on both sides of the unit to remove the front panel. Remove the air filters Domestic Air Conditioner...
  • Page 39 Removal Procedure Remove the casing three Domestic Air Conditioner...
  • Page 40 Removal Procedure horizontal flap and the stepper motor flap Loosen the screws and remove the stepper motor Domestic Air Conditioner...
  • Page 41 Removal Procedure horizontal louver and control box Every blade go round and round,then move Loosen the screws Domestic Air Conditioner...
  • Page 42 Removal Procedure Loosen the hook and the service Cover Lift up the exchanger and remove it Domestic Air Conditioner...
  • Page 43 Removal Procedure motor cover Domestic Air Conditioner...
  • Page 44 Removal Procedure Domestic Air Conditioner...

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Hsu-12ht03/r2

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