Haier AS50RCBHRA-PL Service Manual
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Haier AS50RCBHRA-PL Service Manual

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SE RVICE MANUAL
Model
AS50RCBHRA-PL
WARNING
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
2023(Qing dao Haie r Air Condi tione r Genera l corp . , Ltd)
All right s reser ved. Unauthoriz ed copying and distributio n is a violati on of law
Haier Group
Version V1
Date 2023-12-14

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Summary of Contents for Haier AS50RCBHRA-PL

  • Page 1 SE RVICE MANUAL Model AS50RCBHRA-PL WARNING 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.

  • 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 Poland Apply toT1; 220~240V50HZ/1ph DC inverter Indoor units Version number 40 Platform Platform of indoor units: R (R platform) 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 ●...
  • Page 5 Introduction When disconnecting the suction or discharge pipe of the compressor at the welded section, release the refrigerant gas completely at a well-ventilated place first. If there is a gas remaining inside the compressor , the refrigerant gas or refrigerating machine oil discharges when the pipe is disconnected, and it can cause injury.
  • Page 6 Introduction 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 Introduction 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 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. ●...

  • Page 9: Features

    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 n i l 4.8(1.3-5.4) 4.8(1.3-5.4) Capacity rated Btu/h 16380（4430-18420） 16380（4430-18420） 1.33 1260 ³ 2.0*10 ³ TECHNICAL SPECIFICATIONS 875*212*304 945*390*296 10.0 12.0 White Sound dB(A) 44/40/35/28 44/40/35/28 pressure(Hi/Mid/Lo/Si) Sound level dB(A) Sound power(high) Liquid...

  • Page 11: Sensors List

    Specifications TECHNICAL SPECIFICATIONS-PARTS cooling heating Air flow rate(high) m³/h 1100/1000/900 Speed(Hi/Mid/Lo) 1100/900/700 Type ML fin- 7HI-HX tube Heat exchanger c t i Removable/Washable/Mildew Proof Air filter Note: the data are based on the conditions shown in the table below Conversation formulae n i l Kcal/h= KW×860 Indoor: 27 DB/19 WB...

  • Page 12: Piping Diagrams

    Piping diagrams 5 Piping diagrams 12.7CuT 6.35CuT 12.7CuT 6.35CuT Domestic air conditioner...

  • Page 13: Printed Circuit Board Connector Wiring Diagram

    4) Jumper J1 and J2 combined control, corresponding to different series of display boards; ON means keep; OFF means cut ON OFF OFF ON OFF ON OFF N-RC DISPLAY 387/1045/ 325/798 SERIES UNIT MOUDLE PCB MOUDLE DISPLAY MOUDLE AS50RCBHRA-PL 0011801123A（35） OFF ON 0011801045A ON OFF Domestic air conditioner...
  • Page 14 Printed circuit board connector wiring diagram PCB(1) Domestic air conditioner...
  • Page 15 Functions and control Wiring diagrams INDOOR UNIT WIRED CONTROLLER WIFI MAG SWITCH S W1/CN 14 EMERGENCY SWITCH UP-DOWN STEPMOTOR LEFT-RIGHT STEPMOTOR CONDENSER 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.
  • Page 17 Functions and control 7.1.3 Dehumidifying mode. * temperature control range: 16---30℃ * temperature difference: ±1℃ 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 If Tr<Ts-1℃, the outdoor system will be turned on again, the indoor fan will be at the cold air proof mode. *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.
  • Page 19 Functions and control 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; if the system enters the heating mode, then the heating strength/ mute function will be offered;...
  • Page 20 Functions and control 2 centigrade after 1 hour’s operation and will fall 2 centigrade 1 hour later. 3 hours after the preceding operations, the set temperature will be raised for 1 centigrade and the system will keep this status for 3 hours and then close down.
  • Page 21 Functions and control 7.1.12 High load protection control The outdoor system will be stopped if the coil temperature is above 65℃ for 2 minutes. The indoor fan will be controlled by the thermostat. The outdoor system can be restarted when the coil temperature is below 42℃...
  • Page 22 Functions and control can be confirmed and reported and the outdoor system will be stopped. 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 23 Functions and control 7.1.18 Test program First, connect the test program terminal on the mainboard. Then connect the system to the power circuit. The test program will operate as follows. HV series display: The buzzer rings for one time—the signal will be sent to outdoor system for 0.5 second—...
  • Page 24 Functions and control R25℃=10KΩ±2% B25℃/50℃=3700K±2% Max.(KΩ) Normal(KΩ) Min.(KΩ) Temp.((℃)) 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 25 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 26 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 27 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 28: Dimensional Drawings

    Service diagnosis 9.Dimensional 10.Center of gravity 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.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 30 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 31 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 32 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 33 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 34 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 35 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 36 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 37 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 38 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 39 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 40 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 41 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 42 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 When the compressor discharge temperature is above 110℃ Decision Conditions ■...
  • Page 43 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 44 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 45 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 46 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 47 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 48 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 49 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 50 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 51 Circuit Diagra a ms 11 Circ c uit Diag g rams FJ-fb beep0/INT6/P140 NetLabel_63 P60/SCLA0 beep1/INT7/P141 P61/SDAA0 TI00/P00 3-62-N NetLabel_19 P62( 开漏 TO00/P01 NetLabel_20 TXD1/AN17/P02 3-60-COMM_TX BUZZ /INT4/TI03/TO03/beep0 sda10/RXD1/AN16/P03 3-59-COMM_RX DSTEP_A P77/INT11/TXD2 SCL10/SCK10/P04 DSTEP_B NetLabel_57 P76/INT10/RXD2 P130(out) DSTEP_C ROOM P75/INT9/scl01 AVREFP/AN0/P20 DSTEP_D BM(ad)
  • Page 52 Circuit Diagra a ms +15V IC304 AS7815ADTR-G1-TO252 D206 15V-100mA Vout ER2G(2A-400V-50ns) C014 4.7nF-250VAC C013 4.7nF-250VAC 100uF/25V 220uF-35V-105℃ 0.1uF SDB207L (2A-1000V) +310V NTC1 +310V 220-N AC V+ SCK084R72 C009 AC V- R019 47Ω -1/2W C002 47K± 5%-3W 1nF-1000V 103-630VDC BCK-25-1989 10Ω -1206 220-L +12V 12V-900mA...

  • Page 53: Removal Procedure

    13.Remove Procedure Indoor unit 1. Remove the front panel Step Procedure Points 1.Features 2.Remove the front pan,1 Procedure Points Release the four pieces of tape Jold the front panel by the tabs on the both sides and lift it until it stops with a click.
  • Page 54 Step Procedure Points Loosen the screw and lift up the control box cover ． Pull the wires out of the control box and then release the pivots on both sides of the unit ． to remove the front panel.
  • Page 55 2. Remove the air filters and horizontal flap Remove the air filters Step Procedure Points Lift the ight air filte 「 「 upwards slightly and then pull it out downwards Lift the left air filter upwards slightly a叩 then pull it out downwards Procedure Points...
  • Page 56 3.Remove the casing Step Procedure Points I Release the screw covers(3EA) ． Loosen the marked • lift up the screw (6EA) ． screw covers and then release them.
  • Page 57 Proc Points •Wh n ass mbling, hooks (4EA) and th 「 Pull th install th front Horizontally and grill horizontally 「 HOLE(4EA) so as not to stuff insid •Wh n ass mbling, four hooks ar caught rly .
  • Page 58 4. Release stepping motor and the control box Release stepping motor Step Procedure Points Loosen the stepping motor sc ews (2EA) 「 and then remove the stepping motor Procedure Points Remove groundiQQ screw and TEMP sensor Loosen the grounding screws(2EA) remove TEfylP Sensor...
  • Page 59 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 the control Box screws (1 EA) and then pull it.
  • Page 60 5. Removal of Heat Exchanger Step Procedure Points I Loosen the marked screws(1 E A ) 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(S E A ),contains 1 screws on the right side...
  • Page 61 6. Removal of Fan motor and fun Removal of Fan motor Step Procedure Points Loosen the ma 「 screws(4EA) and release the cover of fan motor Loosen the marked screw (2EA) and remove the fan motor brackets(up&down)
  • Page 62 Step Procedure Points Loosen the marked screw (1 EA) and remove fan moto 「 Remove of fan Step Procedure Points Lift up the fan aQd rem9ve it, and then remove the bearing housing ＂ " � �...
  • Page 63 Producent: Qingdao Haier Air Conditioner Electric Co., Ltd. Haier lndustrial Park, Qianwangang Road, Eco-Tech Development Zone, Qingdao 266555, Shandong, R.P.C. +86 532 88936943 haier.com Haier zastrzega sobie prawo do wprowadzania zmian bez wcześniejszego powiadomienia.

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