Haier AS25PBBHRA Service Manual
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Haier AS25PBBHRA Service Manual

Haier AS25PBBHRA Service Manual

Wall mounted type dc inverter super match
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SERVICE MANUAL
Wall Mounted Type
DC Inverter SUPER MATCH
Model No . AS25PBBHRA
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
All rights reserved. Unauthorized copying and distribution is a violation of law
Date 2023-02-06
Version V1

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Summary of Contents for Haier AS25PBBHRA

  • Page 1 SERVICE MANUAL Wall Mounted Type DC Inverter SUPER MATCH Model No . AS25PBBHRA 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.

  • Page 2: Table Of Contents

    Table of 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 DC inverter Indoor units Version number 35 capicity Platform of indoor units: P (P platform) Nominal cooling capacity (9000BTU/h) Type of indoor unit: S (wall-mounted) Indoor unit Domestic air conditioner...

  • Page 4: Safety Cautions

    lntuoduction 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 t,o 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 lntuoduction When d1sconnect1ng the suction or discharge pipe of the compressor at the welded section, release the refrigerant gas completely at a well-ventilated place first lf there is a gas remaining inside the compressor , the refrigerant gas or refrigerating machine 011 discharges when the pipe 1s disconnected, and 1t can cause 1n」ury ＠...
  • Page 6 Intuoduction conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools can cause an electrical shock, excessive heat generation or fire. When relocating the equipment, make sure that the new installation site has sufficient strength to withstand the weight of the equipment.
  • Page 7 Intuoduction the refrigerant gas from leaking into the room. The refrigerant gas itself is harmless, but it can generate toxic gases when it contacts flames, such as fan and other heaters, stoves and ranges. When replacing the coin battery in the remote controller, be sure to disposed of the old battery to prevent children from swallowing it.

  • Page 9: Features

    Self-Clean Freezes the evaporator with moisture in the air, and then removes away dirt in melting, ensuring clean air out of the air conditioner. Wi-Fi Control Download the Haier hOn App to an Apple or Android smart device, and link the equipment to the smart device for system control from whenever and wherever you want.

  • Page 10: Specifications

    Specifications 3. Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE 220-240 NOMINAL CAPACITY and NOMINAL INPUT cooling heating 2.6(0.8-3.2) 2.8(0.8-4.2) Capacity rated 8870 9555 Btu/h (2730-10238) （2730-10920） 0.75 1.2*10 ³ ³ TECHNICAL SPECIFICATIONS 805*200*292 Packaged Dimensions 876*365*272 10.6 White 37/32/28 Sound pressure(Hi/Mid/Lo) dB(A) Sound level dB(A) Sound power(high)

  • Page 11: Sensors List

    Specifications TECHNICAL SPECIFICATIONS-PARTS cooling heating Air flow rate(high) m³/h Speed(Hi/Mid/Lo) 1100/900/700 Type ML fin- 7HI-HX tube Heat exchanger c t i Removable/Washable/Mildew Proof Air filter Microcomputer Control Temperature control 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 9.52CuT 6.35CuT 9.52CuT 6.35CuT Domestic air conditioner...

  • Page 13: Printed Circuit Board Connector Wiring Diagram

    ON means keep; OFF means cut OFF ON 3 ON ON OFF OFF B 4 ON OFF ON OFF 2 N_RC RC 35 33 387/1045 DISPLAY SERIES 325/798 UNIT MOUDLE PCB MOUDLE DISPLAY MOUDLE 0011801045 AS25PBBHRA 0011801123(23） ON OFF Domestic air conditioner...
  • Page 14 CN11 ‘’’ CN11’ CN5’ ‘’’ CN14 CN51 CN34 CN36 CN15 CN23 CN21 CN52 Domestic air conditioner...

  • Page 15: Funcitions 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.

  • Page 16: Functions And Control

    Functions and Control 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 17: Heating Operation Mode

    Functions and Control 7.1.4 Heating operation mode. * temperature control range: 16---30℃ * temperature difference: ±1℃ * control feature: the temperature compensation is automatically added and the system will send the heating signals to the outdoor system. If Tr+0.5℃≤Ts, the outdoor compressor is turned on, the indoor fan will be at the cold air proof mode. If Tr>Ts+1.5℃, the outdoor system is turned off, the indoor fan will be at the heat residue sending mode.

  • Page 18: Mute Operation

    Functions and Control Send strength operation signal to the outdoor system. The mode change finishes the strength operation. Entering ‘mute’, you can have normal operation or signal control such as timing to finish the strength operation. 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;...
  • Page 19 Functions and Control operations, the set temperature will be raised for 1 centigrade and the system will keep this status for 3 hours 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 20 Functions and Control 7.1.12 High load protection control The outdoor system will be stopped if the coil temperature is above 63℃ for 2 minutes. The indoor fan will be controlled by the thermostat. The outdoor system can be restarted when the coil temperature is below 45℃...
  • Page 21 Functions and Control 7.1.16 Single indoor system operation * Enter condition: First, set the high speed airflow and 30 centigrade set temperature, then press the dormant 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.

  • Page 22: Value Of Thermistor

    Functions and Control 7.2 Value of thermistor Room sensor and Pipe Sensor Room sensor R25℃=23KΩ±2% B25℃/50℃=4200K±1% R25℃=23KΩ+2% Temp.(℃) Resistor（KΩ） Temp.（℃） Resistor（KΩ） Temp.（℃） Resistor（KΩ） 266.905 32.215 250.866 30.671 5.87 235.895 29.21 5.65 221.911 27.828 5.44 208.838 26.521 5.24 196.609 25.283 5.04 185.163 24.111 4.86...
  • Page 23 Functions and Control R25℃=10KΩ±2% B25℃/50℃=3700K±2% Temp.((℃)) Max.(KΩ) Normal(KΩ) Min.(KΩ) Tolerance(℃) 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 105.7989 -1.87 1.70 122.8484 110.9627 100.1367 -1.85 1.69 115.9272 104.8882 94.8149...
  • Page 24 Functions and Control 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 14.5748 14.0079 13.4510 -0.93 0.92 13.9436 13.4185 12.9017 -0.91 0.90...
  • Page 25 Functions and Control 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 2.8936 2.7012 2.5193 -2.13 2.01 2.8000 2.6112 2.4328 -2.17 2.05 2.7099 2.5246 2.3498 -2.22 2.09...
  • Page 26 Connector Wiring diagrams 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 0.8061 0.7233 0.6484 -4.29 3.88 0.7848 0.7036 0.6303 -4.34 3.92 0.7641 0.6845 0.6127 -4.40 3.97 0.7441 0.6661 0.5957 -4.46 4.02...

  • Page 27: Dimensional Drawings

    Service diagnosis 8. 8.Dimension unit:mm 501.6 9.Center of gravity unit:mm Domestic air conditioner...

  • Page 28: 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.When a signal transmission error occurs between the indoor and outdoor units.In either case, conduct the diagnostic procedure described in the following pages.

  • Page 29: Error Codes And Description Indoor Display

    Service Diagnosis Error Codes and Description indoor display 10.4 Split board: LED1 light of outdoor PCB flash; All-in-one board: LED2 light of outdoor PCB flash OUTDOOR ERROR CODE FAULT DESCRIPTION SPARE PART (LED FLASH TIMES) Indoor PCB Indoor and Communication fault between indoor Outdoor PCB Outdoor and outdoor units...
  • Page 30 Service Diagnosis OUTDOOR ERROR CODE FAULT DESCRIPTION SPARE PART (LED FLASH TIMES) Lack of refrigerant Refrigerant 4-way valve reverse failure 4-way valve Power over/under voltage protection Power module Outdoor pipe temperature sensor High pressure protection Outdoor PCB Outdoor coil temperature sensor Defrost temperature sensor Power module Outdoor Alternating current over...

  • Page 31: Thermistor Or Related Abnormality

    Service Diagnosis 10.4.1 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 Malfunction...
  • Page 32 Service Diagnosis 10.4.2 EEPROM abnormal E4: Indoor EEPROM error Indoor Display Indoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times Method of Malfunction The Data detected by the EEPROM are used to determine MCU Detection Malfunction When the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed...
  • Page 33 Service Diagnosis Indoor DC fan motor malfunction 10.4.3 Indoor Display E14 Indoor DC fan motor malfunction Method of When the fan motor is running, the speed detected by the Hall IC is used to judge the Malfunction abnormal operation of the fan motor Detection Malfunction When the detected rotation feedback signal don’t received in 2 minutes...
  • Page 34 Service Diagnosis Turn on the unit and check if Measure whether there is a voltage the motor can run pulse (0-15VDC) between 4 and 5 of the CN9 terminal on the indoor PCB The indoor motor is damaged Is it ok? and need replace The indoor PCB is damaged and need replace...

  • Page 35: Outdoor Dc Fan Motor Fault

    Service Diagnosis 10.4.4 Outdoor DC fan motor fault Outdoor display F8 LED1 flash 9 times Method of DC fan motor is detected by checking the fan running condition and so on Detection Malfunction When the detected rotation feedback signal don’t received i n2 minutes Decision Conditions ■...
  • Page 36 Service Diagnosis The resistances The module PCB is between black line and The resistances are damaged, replace it red line, between black more than 40kΩ with a new one. line and white line of the fan terminal of outdoor PCB are greater than 10MΩ...

  • Page 37: Ipm Protection

    Service Diagnosis 10.4.5 IPM protection Outdoor display: F1 LED1 flash 2 times Method of IPM protection is detected by checking the compressor running condition and so on Malfunction Detection The system leads to IPM protection due to over current Malfunction Decision The compressor faulty leads to IPM protection Circuit component of IPM is broken and led to IPM protection...

  • Page 38: Over-Current Of The Compressor

    Service Diagnosis 10.4.6 Over-current of the compressor Outdoor Display F22, F2, F23 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 or the compressor is damaged. Decision Conditions Power supply voltage is too low or too high...

  • Page 39: The Communication Fault Between Ipm And Outdoor Pcb

    Service Diagnosis 10.4.7 The communication fault between IPM and outdoor PCB Outdoor display: F3 LED1 flash 4 times Method of Malfunction Communication is detected by checking the IPM module and the outdoor PCB Detection Malfunction ■ The outdoor PCB broken leads to communication fault Decision ■...

  • Page 40: Power Supply Over Or Under Voltage Fault

    Service Diagnosis 10.4.8 Power Supply Over or under voltage fault Outdoor display: F19 LED1 flash 6 times An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. Method of The power supply is over voltage Malfunction Detection Malfunction...

  • Page 41: Overheat Protection For Discharge Temperature

    Service Diagnosis 10.4.9 Overheat Protection for Discharge Temperature Outdoor display: F4 LED1 flash 8 times Method of Check the control of the discharge temperature by the temperature detected by the Malfunction discharge pipe thermistor Detection Malfunction Decision When the compressor discharge temperature is above 110℃ Conditions ■...

  • Page 42: The Communication Fault Between Indoor And Outdoor

    Service Diagnosis 10.4.10 The communication fault between indoor and outdoor Split board Indoor display E7 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 43 Service Diagnosis Check the indoor PCB: only indoor charged measure the voltage between 3 and 4 of IC6 on the indoor PCB with a universal meter. And measure the voltage between CN23(S) and CN17 (L) with a universal meter. If the voltage is a constant value from DC 0V to DC 5V.Or The indoor PCB is the voltage between...
  • Page 44 Service Diagnosis Remove fan motor after Fan motor is switch off the power and damaged. And restart the unit, the LED replace it with a new 1 becomes light or flash. one. Test the fan motor terminal resistance between pin 1(310V) and pin 4(0V), or pin 5(15V) and pin 4(0V) of CN21 are close to 0mΩ...
  • Page 45 Service Diagnosis All-in-one board Indoor display E7 outdoor display LED2 flash 15 times Method of Communication is detected by checking the indoor PCB and the outdoor PCB. Malfunction Detection The outdoor PCB broken leads to communication fault. Malfunction  The indoor PCB broken leads to communication fault. Decision ...
  • Page 46 Service Diagnosis Check the indoor PCB: Only indoor charged measure the voltage between 3 and 4 of IC6 on the indoor mainboard with a universal meter. And measure the voltage between CN23(S) and CN52 (L) with a universal meter. If the voltage is a constant value of 0V DC to 5V DC .Or the voltage between communication line (red) The indoor PCB is damaged;...
  • Page 47 Service Diagnosis Remove fan motor after switch off the power and Fan motor is damaged. Replace restart the unit, the LED 2 it with a new one. becomes light or flash. Test the fan motor terminal resistance between pin 1 (310V) and pin 4 (0V), or pin5 (15V) and pin4 (0V) of CN21 are close to 0mΩ...
  • Page 48 Service Diagnosis 10.4.11 Loss of synchronism detection (Compressor position detection circuit fault) Outdoor Display F11 LED1 flash 18 times F28 LED1 flash 19 times Method of The position of the compressor rotor can’t 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 49: High Work-Intense Protection

    Service Diagnosis 10.4.12 High work-intense protection Outdoor display E 9 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 Malfunction Activated when the temperature being sensed by the heat exchanger rises above 65℃...

  • Page 50: Wiring Diagrams

    Table of Contents 11. Wiring diagrams 11.1 INDOOR UNIT WIRED CONTROLLER WIFI MAG SWITCH SW1/CN14 SWITCH UP-DOWN STEPMOTOR LEFT-RIGHT STEPMOTOR CONDENSER Domestic air conditioner...

  • Page 51: Circuit Diagrams

    Circuit diagrams 11.2 Circuit Diagrams Domestic air conditioner...

  • Page 52: Removal Procedure

    Removal Procedure 12. Removal Procedure Removal of front panel Indoor unit 1. Remove the front panel Step Procedure Points 1.Features 2.Remove the front panel Procedure Points ● Release the four pieces of tape Hold the front panel by ● the tabs on the both sides and lift it until it ●...
  • Page 53 Step Procedure Points Loosen the screw and lift up the control box cover Pull the wires out of ● control box and then release the pivots on both sides of the unit ● o remove the front ● panel.
  • Page 54 2. Remove the air filters and horizontal flap Remove the air filters Step Procedure Points Lift the right air filter upwards slightly and then pull it out downwards Lift the left air filter upwards slightly and ● then pull it out downwards Procedure Points...
  • Page 55 3.Remove the casing Step Procedure Points Release the screw covers(3EA) Embo Loosen the marked ■ lift up the ● screw (6EA) screw covers ● and then release them.
  • Page 56 Step Procedure Points Release the marked ■When assembling, hooks (4EA) and then Pull the grille out install the front HOLE (4EA) Horizontally and grille horizontally remove it so as not to stuff the flap inside. ■When assembling, make sure the four hooks are caught properly.
  • Page 57 4. Release stepping motor and the control box Release stepping motor Step Procedure Points Loosen the stepping motor screws (2EA) and then remove the stepping motor Remove grounding Procedure Points ● screw and TEMP sensor Loosen the grounding screws(2EA) remove TEMP ●...
  • Page 58 Procedure Points Remove the control box Remove stepping motor wires and fun motor wires from the Appliance Control Board, then Pull the of the wires out of the control Loosen control Box screw Loosen the control ● Box screws (1EA) and then pull it.
  • Page 59 5. Removal of Heat Exchanger Step Loosen the marked screws(1EA) Pull mounting plate and heat exchanger bracket, and then release them. Release fixture plate from the base Frame hook and remove it. Loosen the marked screws( 5EA ),contains 1 screws on the right side Remove the heat ●...
  • Page 60 6. Removal of Fan motor and fun Removal of Fan motor Step Procedure Points Loosen the marked screws(4EA) and release the cover of fan motor Loosen the marked ● screw (2EA) and remove the fan motor brackets(up&down)
  • Page 61 Step Procedure Points Loosen the marked screw (1EA) and remove fan motor Remove of fan ● Step Procedure Points Lift up the fan and ● remove it , and then ● remove the bearing housing...
  • Page 62 How To Replace The Sealing Block For Indoor Unit Electrical Box To replace the sealing block for Series R290 indoor unit, perform the following steps： 1. Remove guide plate：First remove the middle buckle of the guide plate in the circle shown in the figure, then bend the guide plate and remove the guide plate from both ends。...
  • Page 63 4. After removing the housing, take out the original sealing block in the shown position, as shown in the right picture below, and replace the three-hole sealing block with a four-hole sealing block. The original wiring harness is reset, and the new wire controller connection line is drawn from the fourth hole and the connecting machine line, and then reinstall the sealing block to the original position.
  • Page 64 5. Install the housing and arrange the wiring harness to ensure that the front and rear buckle are installed in place.。 6. Tighten the screws and the two screw caps in the corresponding positions in the figure below and install the guide plate. Straighten out the wiring harness inside the electric cabinet to prevent the wiring harness from pressing or blocking the emergency switch.
  • Page 65 Sincere Forever Domestic air conditioner...

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