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SERVICE MANUAL

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

WARNING

Version V1

Date 2022-

-20

Wa ll Mounted Type

DC Inverter

Model

No.

AS50XCAHRA

Содержание AS50XCAHRA

Страница 1: ...pting 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 WARNING All rights reserved Unauthorized copying and distribution is a violation of law Version V1 Date 2022 1 20 ...

Страница 2: ...ntroduction 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 Center of gravity 10 Service diagnosis 11 Wiring diagrams 14 40 26 25 25 ...

Страница 3: ...on 1 1 Model name explanation A S X C A H R Type of indoor unit S wall mounted Indoor unit A Indoor units Version number Apply toT1 220 240V50HZ 1ph DC inverter 40X Platform Platform of indoor units X X platform Nominal cooling capacity 18000 BTU h 5 0 ...

Страница 4: ...test operation to ensure that the equipment operates Normally and explain the cautions for operating the product to the customer Check the embedded wire are four roots L N COM GND GND is needed if not thunder or high voltage wave from power grid will impact to the performance Using a multi meter to test short circuit of the four roots wires make sure no short circuit happen 1 2 2 Caution in Repair...

Страница 5: ...an cause an electrical shock or fire 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 Be sure to provide the grounding when repairing the equipment in a humid or wet place to avoid electrical shock Be sure ...

Страница 6: ...er electrical work can cause an electrical shock or fire Be sure to use the specified cable to connect between the indoor and outdoor units Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals Improper connections can cause excessive heat generation or fire When connecting the cable between the indoor and outdoor units m...

Страница 7: ...emains around the unit it can cause a fire Be sure to install the packing and seal on the installation frame properly If the packing and seal are not installed properly water can enter the room and wet the furniture and floor 1 2 4 Inspection after Repair Warning Check to make sure that the power cable plug is not dirty or loose then insert the plug into a power outlet all the way If the plug has ...

Страница 8: ...ock Be sure to check the drainage of the indoor unit after the repair Faulty drainage can cause the water to enter the room and wet the furniture and floor 1 2 4 Using Icons Icons are used to attract the attention of the reader to specific information The meaning of each icon is described in the table below 1 2 5 Using Icons List Icon Type of Information Description Note Note A note provides infor...

Страница 9: ...from whenever and wherever you want 2 way piping design The pipe can shoot out both from left or right side Super match One outdoor unit can match two or more indoor unit DIY auto mode Adjust the last fixed operation mode automatically Turbo mode Quick cooling or heating Auto restart Automatic return to previous operation conditions after sudden power blackout 24 hours timer Use the timer function...

Страница 10: ...a e h g n i l o o C Capacity rated kW 5 0 5 60 Btu h 17064 19110 Power Consumption Rated kW 1 47 1 509 W W P O C S R E E S 6 6 A 4 3 A Annual energy consumption kWh 265 1498 h m l a v o m e R e r u t s i o M 2 10 TECHNICAL SPECIFICATIONS UNIT Dimensions H W D mm 895 236 313 Packaged Dimensions H W D mm 964 386 316 Weight KG 11 6 Gross weight KG 14 2 Sound level Sound peessure dB 60 Sound power dB ...

Страница 11: ...or output W 25 Fan Air flow rate high m h 800 Speed Hi Mid Lo rpm 1200 Type ML fin 7HI HX tube Heat exchanger Segment stage fitch 3 16 1 4 Air direction control Right Left Horizontal Downward Air filter Removable Washable Mildew Proof Temperature control Microcomputer Control h t g n e l g n i p i P g n i t a e h g n i l o o c Indoor 27 DB 19 WB Outdoor 35 DB 24 WB Indoor 20 DB Outdoor 7 DB 6 WB 5...

Страница 12: ... Piping diagrams Domestic air conditioner 5ˊPiping diagrams 10 ...

Страница 13: ...11 CN11 Connector for RIGHT LEFT STEP motor 5 CN21 white line CN52 black line Connector for indoor terminal N and L 6 CN8 Connector for display board 7 CN23 red line Connector for communicate between the indoor board and the outdoor board 8 CN36 Connector for long range control 9 CN34 Connector for wifi Module 10 CN2 Connector for wired controller 11 CN51 Connector for room card Note Other designa...

Страница 14: ...Domestic air conditioner PCB 12 CN8 CN9 CN21 CN36 CN23 CN6 CN52 CN5 CN14 CN2 CN34 CN15 CN11 CN51 CN5 CN11 ...

Страница 15: ...ate at the set speed and the mode signal will be sent to the outdoor system The system will keep the original status if Tr Ts Airflow speed control temperature difference 1 Automatic When Tr Ts 3 high speed When Ts 1 Tr Ts 3 medium speed When Tr Ts 1 low speed When the sensor is off low speed When the airflow speed has no delay from the high to low switching the speed should be delayed for 3 minut...

Страница 16: ...ight speed mode 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 Manual When the sensor is off or Tr Ts 3 the manual operation can not be made obligatory automatic operation Airgate location control the location for the airgate can be set according to your needs Defrosting function...

Страница 17: ... 1 The fan control functions as below Residue heat sending The indoor fan will send the residue heat at a low speed for 20 seconds If other conditions are satisfied when the compressor stops the indoor system will operate at a light speed The indoor fan will stop when the coil temperature is below the THHOT0 Defrosting When the system receives the defrosting signal from outdoors the indoor fan wil...

Страница 18: ...no Aqua will be turned on when the fan operates 7 1 8 Timing You can set 24 hours on off timing accordingly After the setting the timing indicator will be lightened Also the light will be turning off after the timing is finished The followings are several timing methods 1 system on timing The timing indicator will be lightened and the indoor system is under the waiting mode The light will be turne...

Страница 19: ...er the system off mode the display screen will show automatic running sign Under the system off mode the system will not receive the remote control signal if the press on the urgency key doesn t last for 15 seconds or if the key is loosened Urgency operation If you press the urgency key for less than 5 seconds the buzzer will ring when you press the on off key The system will enter the urgency ope...

Страница 20: ...for stop According to the signals the malfunction resume presentation finishes The resume restores after the power supply restores 7 1 15 Abnormality confirmation approaches 1 indoor temperature sensor abnormality Under the operation the normal temperature ranges from 120 degree to 30 degree When the temperature goes beyond this range the abnormality can be confirmed If the temperature goes back i...

Страница 21: ...e indoor system Quitting conditions Press dormant button 10 times within 7 seconds and the buzzer will ring twice 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 the violet is sent...

Страница 22: ... 63 4 68 12 164 399 26 21 94 64 4 51 11 154 983 27 20 94 65 4 35 10 146 153 28 19 99 66 4 19 9 137 87 29 19 09 67 4 04 8 130 096 30 18 23 68 3 9 7 122 799 31 17 42 69 3 76 6 115 946 32 16 65 70 3 63 5 109 51 33 15 97 71 3 5 4 103 462 34 15 22 72 3 38 3 97 779 35 14 56 73 3 26 2 92 437 36 13 93 74 3 15 1 87 415 37 13 34 75 3 04 0 82 691 38 12 77 76 2 94 1 78 248 39 12 23 77 2 84 2 74 067 40 11 71 7...

Страница 23: ...1 66 1 54 14 66 3463 61 0123 56 0565 1 64 1 52 13 62 8755 57 9110 53 2905 1 62 1 51 12 59 6076 54 9866 50 6781 1 60 1 49 11 56 5296 52 2278 48 2099 1 58 1 47 10 53 6294 49 6244 45 8771 1 56 1 46 9 50 8956 47 1666 43 6714 1 54 1 44 8 48 3178 44 8454 41 5851 1 51 1 42 7 45 8860 42 6525 39 6112 1 49 1 40 6 43 5912 40 5800 37 7429 1 47 1 39 5 41 4249 38 6207 35 9739 1 45 1 37 4 39 3792 36 7676 34 2983...

Страница 24: ... 84 0 83 29 8 7942 8 4964 8 2013 0 87 0 86 30 8 4583 8 1621 7 8691 0 91 0 90 31 8 1371 7 8428 7 5522 0 95 0 93 32 7 8299 7 5377 7 2498 0 98 0 97 33 7 5359 7 2461 6 9611 1 02 1 00 34 7 2546 6 9673 6 6854 1 06 1 04 35 6 9852 6 7008 6 4222 1 10 1 07 36 6 7273 6 4459 6 1707 1 13 1 11 37 6 4803 6 2021 5 9304 1 17 1 14 38 6 2437 5 9687 5 7007 1 21 1 18 39 6 0170 5 7454 5 4812 1 25 1 22 40 5 7997 5 5316 ...

Страница 25: ...614 1 6219 2 73 2 54 74 1 8533 1 7064 1 5697 2 78 2 58 75 1 7974 1 6533 1 5194 2 83 2 63 76 1 7434 1 6021 1 4710 2 88 2 67 77 1 6913 1 5528 1 4243 2 92 2 71 78 1 6409 1 5051 1 3794 2 97 2 75 79 1 5923 1 4592 1 3360 3 02 2 80 80 1 5454 1 4149 1 2942 3 07 2 84 81 1 5000 1 3721 1 2540 3 12 2 88 82 1 4562 1 3308 1 2151 3 17 2 93 83 1 4139 1 2910 1 1776 3 22 2 97 84 1 3730 1 2525 1 1415 3 27 3 01 85 1 ...

Страница 26: ...61 0 5957 4 46 4 02 107 0 7247 0 6482 0 5792 4 51 4 07 108 0 7059 0 6308 0 5632 4 57 4 12 109 0 6877 0 6140 0 5478 4 63 4 16 110 0 6700 0 5977 0 5328 4 69 4 21 111 0 6528 0 5820 0 5183 4 74 4 26 112 0 6361 0 5667 0 5043 4 80 4 31 113 0 6200 0 5518 0 4907 4 86 4 36 114 0 6043 0 5374 0 4775 4 92 4 41 115 0 5891 0 5235 0 4648 4 98 4 45 116 0 5743 0 5100 0 4524 5 04 4 50 117 0 5600 0 4968 0 4404 5 10 ...

Страница 27: ...Seivice diagnosis Domestic air conditioner 8 Dimensional drawings 9 Center of gravity unit mm 26 ...

Страница 28: ...pplied Check the indoor PCB Check to make sure that the indoor PCB is broken Operation sometimes stops Check the power supply A power failure of 2 to 10 cycles can stop air conditioner operation Equipment operates but does not cool or does not heat only for heat pump Check for faulty operation of the electronic expansion valve Set the units to cooling operation and compare the temperatures of the ...

Страница 29: ...essor discarging temperature protection Page 41 F8 Trouble record 9 Abnormal of DC motor Page 36 F21 Directly display 10 Abnormal of piping sensor Page 32 F7 Directly display 11 Suction temperature sensor failure Page 32 F6 Directly display 12 Abnormal of outdoor ambient sensor Page 32 F25 Directly display 13 Abnormal of compressor discharge sensor Page 32 F13 Trouble record 16 Lack of refrigerant...

Страница 30: ...nput is more than 4 92V or less than 0 08V during compressor Decision operation Conditions Note The values vary slightly in some models Supposed Faulty connector connection Causes Faulty thermistor Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Thermistor resistance check method Remove the connector of...

Страница 31: ... 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 Faulty EEPROM data Causes Faulty EEPROM Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the indoor or outdoor mainboard ...

Страница 32: ...bleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred 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 Suppose...

Страница 33: ... motor of the outdoor unit is damaged and needs replacing NO the resistances between 0V and 310V between 0V and 15V of the fan terminal of outdoor pcb are greater than 10MΩ The module pcb is damaged replace it with a new one The outdoor pcb is damaged replace it with a new one YES The motor and outdoor pcb are well YES NO 10 3 5 IPM protection Outdoor display LED1 flash 2 times Method of IPM prote...

Страница 34: ...r electronic expansion valve faulty or under charged with gas which can be judged through the pressure of the measuring system 2 The shaft of compressor is seized and the compressor needs replacing Test IPM module resistance between P and U V W Then test IPM module resistance between N and U V W The resistances range are between 1MΩ with 10MΩ and they are similar NO YES 10 3 6 Over current of the ...

Страница 35: ...ted after it has run for some time Check the power supply is too low or too high NO 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 The IPM module broken leads to communication...

Страница 36: ...ly voltage not as specified Causes the IPM module is broken the outdoor PCB is broken Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Electrify the machine again and turn it on with the remote controller Check whether the compressor is started normally Is it ok Yes Maybe there is some disturbance NO No 230 is ok Y...

Страница 37: ...d Electrify the machine again and turn it on with the remote controller then measure the temperature at the exhaust temperature sensor of the compressor on the outdoor unit The temperature exceeds 110 shortly after the machine starts up 1 The cryogen may have been leaked during installation or there may be leakage in the piping system 2 There may be other causes to make the exhaust temperature too...

Страница 38: ... Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Restart the a c and it becomes normally If starting up normally but malfunction occurs again after a while The outdoor mainboard needs dehumidification The outdoor mainboard needs dedust Check whether the linking cable between the indoor and outdoor is well connected or whether its core wi...

Страница 39: ...tdoor pcb is damaged replace it with a new one NO Measure the voltage Between 3 and 4 of IC9 on the Outdoor mainboard with a Multimete The voltage is a constant value of 0V DC to 5V DC The outdoor pcb is damaged replace it with a new one YES NO The outdoor pcb is well and then check the cable If the voltage is a constant value of 0V DC to 5V DC Or the voltage between Communication line red and N w...

Страница 40: ...lty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Within 3 minutes after the machine is supplied with power and turned on with the remote controller check whether the compressor can start up 1 The wiring of compressor is incorrect or the connection is poor 2 The compressor is damaged At first the compressor start...

Страница 41: ...irty heat exchanger Faulty heat exchange sensor Insufficient gas Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Electrify the machine again and turn it on with the remote controller check whether the wind temperature is below 65 The malfunction is reported after the machine has run for some time 1 Check room temp...

Страница 42: ...Table of Contents Domestic air conditioner 40 11 Wiring diagrams 11 1 INDOOR UNIT SWITCH UP DOWN STEPMOTOR LEFT RIGHT STEPMOTOR WIFI WIRED CONTROLLER R W BL CONDENSER MAG SWITCH SW1 CN14 ...

Страница 43: ...Circuit diagrams Domestic air conditioner 41 11 2 Circuit Diagrams ...

Страница 44: ... 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 WARNING Version V1 Date 202...

Страница 45: ...oor unit 1 Remove the front panel Step Procedure Points 1 Features 2 Remove the front panel 1 Release the five pieces of tape 2 Hold the front panel by the tabs on the both sides and lift it until it stops with a click 1 Domestic Air Conditioner ...

Страница 46: ...tep Procedure Points 3 Loosen the screw and lift up the control box cover 4 Pull the wires out of the control box and then release the pivots on both sides of the unit to remove the front panel 2 Domestic Air Conditioner ...

Страница 47: ... 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 2 Remove the horizontal flap 1 Release the Center of pivot and then release the side of the pivot Bend the horizontal blade slightly and remove it 3 Domestic Air Conditioner ...

Страница 48: ... of Lower trim panel Step Procedure Points 1 Release the fast assembling lock catch 2EA and loosen the screw under the right lock catch 2 Grip the marked position remove the trim panel 4 Domestic Air Conditioner release two catches and then remove the panel ...

Страница 49: ...marked fast assembling lock catch 2EA 2 Remove the drainage pipe and pull the wires out of the joint box If the uppermost terminal is blocked remove the Eco Sensor before removing this terminal 3 Grip the marked position of the base frame A and pull it out 5 Domestic Air Conditioner ...

Страница 50: ...motor and fan Step Procedure Points 1 Loosen the marked screws 2EA and release the cover of fan motor 2 Loosen the marked screw 1EA and then lift up the fan motor and remove it 3 Lift up the fan and remove it 6 Domestic Air Conditioner ...

Страница 51: ... 2EA HOLE 4EA 2 Release the marked hooks 4EA and then Pull the grille out Horizontally and remove it HOOK 4EA 7 Domestic Air Conditioner When assembling install the front grille horizontally so as not to stuff the flap inside When assembling make sure the four hooks are caught properly ...

Страница 52: ...x Step Procedure Points 1 Remove stepping motor wires and fun motor wires from the Appliance Control Board and then Pull the of the wires out of the control box Loosen the control Box screws 1EA and then pull it 2 Loosen the control Box screw 8 Domestic Air Conditioner ...

Страница 53: ...Step Procedure Points 1 2 Loosen the marked screws 4EA contains 1 screw on the right side Loosen the marked screws 1EA Pull mounting plate and heat exchanger bracket and then remove them Release the fixture plate from the base Frame hook and remove it 9 ...

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