GE GES-NX2G35IN Service Manual Download Page 34 | Manualshive

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Service diagnosis

32 Domestic air conditioner

10.3.4 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
Malfunction

Detection

Malfunction

Decision

Conditions

Supposed

■

DC fan motor protection dues to the DC fan motor faulty

Causes

■

DC fan motor protection dues to faulty PCB

Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage

may be occurred.

when the detected rotation feedback signal don’t received in 2 minutes

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Summary of Contents for GES-NX2G35IN

Page 1: ...warning s or caution s to advise non technic al individuals of potentia l dangers in attemptin g to servic e a product Product s powered by electricit y should 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 dealt with in this servic e information by anyone else could result in seriou s injury or death WARNING V...

Page 2: ...troduction 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 Circuit diagrams 14 44 27 26 26 ...

Page 3: ...Introduction Domestic air conditioner 1 Introduction 1 1 Model name explanation G E S N X 3 5 I N Platform of indoor units N N platform 3500W Indoor units Brand Split units 2 G Side closure ...

Page 4: ...efore disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas discharges during the repair work do not touch the discharging refrigerant...

Page 5: ...ing the welder in an enclosed room can cause oxygen deficiency 1 2 2 Cautions Regarding Products after Repair Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to 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 t...

Page 6: ...generation or fire Do not damage or modify the power cable Damaged or modified power cable can cause an electrical shock or fire Placing heavy items on the power cable and heating or pulling the power cable can damage the cable Do not mix air or gas other than the specified refrigerant R 410A R22 in the refrigerant system If air enters the refrigerating system an excessively high pressure results ...

Page 7: ...operly water can enter the room and wet the furniture and floor 1 2 3 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 dust or loose connection it can cause an electrical shock or fire If the power cable and lead wires have scratches or deteriorated be sure to replace them Damaged...

Page 8: ...k 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 informa...

Page 9: ... comfortable level when you set the sleep mode during night sleep 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 to set on or off or from on to off or fro...

Page 10: ... n o C r e w o P 0 4 1 6 W W P O C S R E E S 207 h W K n o i t p m u s n o c y g r e n e l a u n n A h m l a v o m e R e r u t s i o M TECHNICAL SPECIFICATIONS m m D W H s n o i s n e m i D m s n o i s n e m i D d e g a k c a P m D W H G K t h g i e W G K t h g i e w s s o r G r o l o C Sound level Sound peessure Hi Mid Lo Sound power high 1 6 10 982 dB A White dB A 3 6 1 0 4 1 12280 3420 14000 3 ...

Page 11: ...Washable Mildew Proof Temperature control Microcomputer Control M H R Y l e d o m r e l l o r t n o c e t o m e R Note the data are based on the conditions shown in the table below 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 5m 4 Sensors list type Description Qty 1 r o f d e s u s t I m and pipe sensor o o e r u t a r e ...

Page 12: ...Piping diagrams Domestic air conditioner 5 Piping diagrams 10 ...

Page 13: ...wer N and L 7 CN17 Connector for power L wire 8 CN7 Connector for display board 9 CON1 CON3 Connector for ions generator 10 CN23 Connector for communicate between the indoor board and the outdoor board 11 CN36 Connector for long range control 12 CN35 Connector for WIFI Module Note Other designations PCB 1 Indoor Control PCB 1 CN48 Connector for Forced operation ON OFF switch 2 FUSE1 Fuse 3 15A 250...

Page 14: ...Printed circuit board connector wiring diagram 12 Domestic air conditioner CN8 CN9 CN6 CN11 CN12 CN31 CN17 CN21 CN18 CN21 CN7 C0N1 CON3 CN23 CN35 CN36 ...

Page 15: ...CY SWITCH DISPLAY CN7 T3 15A 250VAC POWER SUPPLY TO OUTDOOR UNIT 1 N C 3 L 2 W B Y G Y G GND CN48 AMBIENT TEMP SENSOR PIPING TEMP SENSOR CN6 CN12 Right stepmotor left stepmotor CN11 R C0N2 BL Fresh air L CN21 N S R W CN18 CN23 WIFI CN35 M Fan motor CN8 CN9 BL BL Transformer R R CN3 CN36 Central controller CN17 L CN21 N CN1 CN31 0010578987 ...

Page 16: ...opened the indoor fan will operate 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 spee...

Page 17: ...utes 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 preventing the frosting on the indoor heat exchanger when cooling or dehumidifying When the compressor works continuously for 1 6 minutes adaptable in EEP...

Page 18: ...the outdoor system Residue heat sending The indoor fan will send the residue heat at a low speed for 12 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 heat start temp 4 Defrosting When the system receives the defrosting signal from outdoors the indoor fan will stop a...

Page 19: ...n 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 turned off when the timing is fini...

Page 20: ...peration the press on the urgency key will stop it Under 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 pres...

Page 21: ...control only receives the signals 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 confir...

Page 22: ...indoor system should be as the followings Remote control urgency signal operate according to the remote control and the urgent conditions the present status will be stored into the EEPROM of the 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...

Page 23: ...8 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 78 2 74 3 70 133 41 11 22 79 2 65 4 66 43 42 10 76 80 2 56 5 62 943 43 10 31 6...

Page 24: ... 15 70 0342 64 3023 58 9863 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 ...

Page 25: ... 9 8975 9 5974 9 2980 0 76 0 76 27 9 5129 9 2132 8 9148 0 80 0 80 28 9 1454 8 8465 8 5496 0 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...

Page 26: ...4 2 38 70 2 0983 1 9393 1 7908 2 59 2 42 71 2 0337 1 8778 1 7324 2 63 2 46 72 1 9714 1 8186 1 6761 2 68 2 50 73 1 9113 1 7614 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 ...

Page 27: ...6 0 6303 4 34 3 92 105 0 7641 0 6845 0 6127 4 40 3 97 106 0 7441 0 6661 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...

Page 28: ...Seivice diagnosis Domestic air conditioner 8 Dimensional drawings unit mm 9 Center of gravity unit mm 26 842 211 281 842 281 211 ...

Page 29: ...door 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 liquid side connection pipes of the connection section amo...

Page 30: ...r Malfunction F12 1 Outdoor EEPROM error Page 30 F1 2 The protection of IPM Page 34 F22 3 Overcurrent protection of AC electricity for the outdoor model Page 35 F3 4 Communication fault between the IPM and outdoor PCB Page 36 F19 6 Power voltage is too high or low Page 37 F4 8 Overheat protection for Discharge temperature Page 38 F21 10 Defrost temperature sensor failure Page 29 F7 11 Suction temp...

Page 31: ...input is more than 4 92V or less than 0 08V during compressor Decision operation Conditions z 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...

Page 32: ...ta 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 ...

Page 33: ...faulty indoor unit PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Check whether terminals on indoor pcb is well Electrify the machine again and turn it on in the cooling operation Measure voltage between the positions 1and 3 of Terminal CN5 on the indoor PCB the voltage is about 90 220vac check whether motor ...

Page 34: ...ndition and so on Malfunction Detection Malfunction Decision Conditions Supposed DC fan motor protection dues to the DC fan motor faulty Causes DC fan motor protection dues to faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred when the detected rotation feedback signal don t received in 2 minutes ...

Page 35: ... power Measure the resistances between black line 0V and red line 310V between black line 0V and white line 15V of the fan motor NO YES The resistances are greater than 40KΩ NO YES The 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...

Page 36: ...to IPM protection due to over current Decision The compressor faulty leads to IPM protection Conditions circuit component of IPM is broken and led to IPM protection Supposed IPM protection dues to the compressor faulty Causes IPM protection dues to faulty PCB of IPM module Compressor wiring disconnected Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector...

Page 37: ...roubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Electrify the machine again and turn it on with the remote controller If malfunctions are reported before or upon the compressor being started up IPM Module is damaged and needs replacing Repair the power supply The system may have been over or under charged with gas which...

Page 38: ...cted Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred 1 Check whether Terminal CN23 and CN24 on the outdoor mainboard CN10 and CN11 on IPM module 2 Check whether the connected wire between IPM and outdoor Are they good Electrify the machine again and turn it on Check whether the voltage between 1 and 2 of Terminal ...

Page 39: ...Supply 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 ...

Page 40: ...rred 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 ...

Page 41: ...on 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 ...

Page 42: ...outdoor 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...

Page 43: ...essor Faulty 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 compres...

Page 44: ...Dirty 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 tem...

Page 45: ...6 J8 1 56 J8 R57 10K R119 10K 1 42 COM1 1 43 DIG1 1 42 COM1 1 43 DIG1 XT1 CSTLS8M00G56 R508 10K R507 10K 1 23 LSTEP_D 1 22 LSTEP_C 1 21 LSTEP_B 1 13 BUZZ 1 15 RSTEP_A 12V 5V J9 J24 E ON OFF J9 J24 ON ON ON EK 387 317 OFF OFF OFF C4 0 1uF C28 0 01uF C11 0 1uF C12 0 1uF C30 0 1uF C19 0 001uF C39 0 1uF A0 1 A1 2 A2 3 GND 4 SDA 5 SCL 6 WP 7 VCC 8 IC4 CAT24C04 SOIC8 BUZZ1 PKM13EPY 4002 VREF 61 KI0 AN8 ...

Page 46: ...IC7 R3BMF51 1A 600V C1 0 1uF C6 0 1uF 0805 C21 0 1uF C31 0 1uF 0805 C34 0 1uF C35 0 001uF E2 100uF 16V 105 E10 100uF 16V 105 C26 0 01uF C41 0 1uF C44 0 001uF C43 0 001uF 2 36 TX 2 35 RX LED1 220V N 5V 5V R4 330Ω 0805 IC2 TLP421 IC1 TLP371 R1 330K 0805 R12 2K R7 10K R17 2 2K 0805 D1 1N4007 D2 1N4007 R8 6 8K 2W 1 CN23 D250 室内外通讯 C20 0 001uF 0805 C3 0 001uF 0805 C2 0 01uF 0805 φ3 绿色散光低亮 1 CN18 D250...

Page 47: ...ot 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 V...

Page 48: ...Removal Procedure 1 Domestic Air Conditioner Removal of front panel front panel Remove the foam cushion 2 Loosen the screw ...

Page 49: ...Removal Procedure 2 Domestic Air Conditioner Lift up the control box cover 3 Loosen the screw 4 Lift up the control box cover 5 ...

Page 50: ...hen release the pivots on both sides of the unit to remove the front panel Remocal of front panel Removal Procedure 3 Domestic Air Conditioner Pull the wires out of the control box 6 Remove the air filters 1 ...

Page 51: ...three 6 Removal Procedure 4 Domestic Air Conditioner Remove the casing 1 2 3 ...

Page 52: ...horizontal flap flap Removal Procedure 5 Domestic Air Conditioner and the stepper motor Loosen the screws and remove the stepper motor ...

Page 53: ...2 Every blade go round and round then move it Removal Procedure 6 Domestic Air Conditioner horizontal louver and control box Loosen the screws ...

Page 54: ...3 7 Domestic Air Conditioner Removal Procedure Loosen the hook and the service Cover Lift up the exchanger and remove it ...

Page 55: ...Removal Procedure 8 Domestic Air Conditioner motor cover PRWRU FRYHU ...

Page 56: ...Removal Procedure 9 Domestic Air Conditioner ...

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