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Haier AS18PD1LRA Service Manual
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Haier AS18PD1LRA Service Manual

Haier AS18PD1LRA Service Manual

Wall mounted type dc inverter
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SE RVICE MANUAL
Wall Mounted Type
DC Inverter
Model No. AS18PD1LRA
HSU-18LPC03/R2(DB)
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
Version V1
Date 2021-11-29

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Summary of Contents for Haier AS18PD1LRA

  • Page 1 SE RVICE MANUAL Wall Mounted Type DC Inverter Model No. AS18PD1LRA HSU-18LPC03/R2(DB) 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.
  • Page 2 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 1. Introduction 1.1 Model name explanation Apply toT3; 220-240V50HZ/1ph DC-inventer Cooling only & R410A refrigerant Version number Platform of indoor units:50P Platform Series of indoor units: P-Series Nominal cooling capacity (18000BTU/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 ●...
  • Page 5 Intuoduction 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 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 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 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. ●...
  • Page 9 UVC Sterilization: Emits UV light to sterilize the air passing through with efficiency up to 92%.The sterilization rate of single UV module : 99.9% 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 3.Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT cooling 5.28（1.3-5.8 5.28（1.4-6.0) Capacity rated Btu/h 18000 18000 ） 1.55 1.40 1610 ³ 2.0*10 ³ TECHNICAL SPECIFICATIONS 975*220*320 1050*301*397 11.6 14.4 White Sound dB(A) 44/40/35/28 44/40/35/28 pressure(Hi/Mid/Lo/Si) Sound level dB(A) Sound power(high) Domestic air conditioner...
  • Page 11 Specifications TECHNICAL SPECIFICATIONS-PARTS cooling heating Type Cross flow fan Motor Air flow rate(high) m³/h 950/825/700 Speed(Hi/Mid/Lo) 1100/950/800 Type ML fin- 7HI-HX tube Heat exchanger Segment *stage*fitch 3*16*1.4 Air direction control Right,Left,Horizontal,Downward 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 5 Piping diagrams φ12.7 CAPILLARY φ6.35 φ12.7 φ6.35 CAPILLARY Domestic air conditioner...
  • Page 13 Connector for magnetic switch Note: Other designations PCB(1) (Indoor Control PCB) 1) CN14 Connector for Forced operation ON / OFF switch 2) FUSE1 Fuse 3.15A/250VAC UNIT MODEL PCB MODEL 0011800682S AS18PD1LRA 0011800682S AS18PD1HRA DISPLAY SERIES 387D DISPLAY MODEL UNIT MODEL 0011800387D...
  • 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 SWITCH SW1/CN14 UP-DOWN STEPMOTOR LEFT-RIGHT STEPMOTOR CONDENSER Domestic air conditioner...
  • Page 16 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: 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 malfunctions when dehumidifying. * Timing system on/off function. * Dormant control functio n. 7.1.4 Heating operation mode. * temperature control range: 16---30 * temperature difference: * control feature: the temperature compensation is automatically added and the system will send the heating signals to the outdoor system.
  • Page 19 Functions and control temperature compensation (4 ) will be added. When the status is switched off, the compensation will be erased. 7.1.5 Strength operation The system enters the mode after receiving the ‘strength signal’. Send strength operation signal to the outdoor system. The mode change finishes the strength operation.
  • Page 20 Functions and control 7.1.9 Dormant operation The dormant timing is an eight hours unadaptable one. The timing signs are shown on the V series board. (RC series show the dormant signal, the timing light is lighted on the 6 lights board). 2.1 Under the cooling/ dehumidifying operation, after the setting of the dormant operation, the set temperature will be raised for 1 centigrade after 1 hour’s operation and will be raised for 1 centigrade 1 hour later.
  • Page 21 Functions and control 7.1.11 Low load protection control In order to prevent the frosting of the indoor heat interaction device, the outdoor system will be stopped if the indoor heat interaction temperature is below 1 centigrade for 5 minutes, but the fan will continue to operate.
  • Page 22 Functions and control 3 .indoor malfunction: Out door malfunction: When the indoor system receives the outdoor malfunction codes, it will store the code into E2 for the malfunction list resume. The indoor system will continue to operate according to the original status, the malfunction code will not be revealed or processed. 4.
  • Page 23 Functions and control R25 =10K 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...
  • Page 24 Functions and control 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 14.5748 14.0079 13.4510 -0.93 0.92...
  • Page 25 Functions and control 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 2.8936 2.7012 2.5193 -2.13 2.01...
  • Page 26 Functions and control 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 0.8061 0.7233 0.6484 -4.29 3.88...
  • Page 27 Seivice diagnosis 8.Dimensional unit:mm � 9.Center of gravity unit:mm 二 ：： Domestic air conditioner...
  • Page 28 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 29 Service diagnosis 10.3 Error Codes and Description indoor display Code indication Indoor displaying panel code indication Only For 498 and Outdoor Reference fault description 498A display (LED1 flash Page Other display (Red/Green Time times) Run □On★Flash■ Off) Indoor and Communication fault between Page.39 ■...
  • Page 30 Service diagnosis 10.3.1 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 detected by the thermistors are used to determine thermistor errors...
  • Page 31 Service diagnosis 10.3.2 EEPROM abnormal Indoor Display E4: 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 32 Service diagnosis 10.3.3 Indoor DC fan motor malfunction Indoor Display 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 33 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 when the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed...
  • Page 34 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 35 Service diagnosis 10.3.5 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 Malfunction ■ The system leads to IPM protection due to over current Decision ■...
  • Page 36 Service diagnosis 10.3.6 Over-current of the compressor Outdoor Display: F2 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 37 Service diagnosis 10.3.7 The communication fault between IPM and outdoor PCB Outdoor display: LED1 flash 4 times 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 ■...
  • Page 38 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 39 Service diagnosis 10.3.9 Overheat Protection For Discharge Temperature Outdoor display: F4 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 40 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 ■...
  • Page 41 Service diagnosis Domestic air conditioner...
  • Page 42 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 43 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 44 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( TO00/P01 开漏 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 45 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-900mA +12V...
  • Page 46 Sincere Forever Edited by : Shi Haiyan Wang wanli Signed by : Li jingsheng Approved by: Yang wenjun Domestic air conditioner...
  • Page 47 REMOVAL PROCEDURE Wall Mounted Type ON/OFF P-Series SERIES:50P 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.
  • Page 48 Remove 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 49 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 50 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 51 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 52 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 53 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 54 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 55 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 56 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 57 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...

This manual is also suitable for:

Hsu-18lpc03/r2Hsu-18lpc03/r2db