Service diagnosis
33
Domestic air conditioner
10.3.1 Thermistor or Related Abnormality
Indoor Display
ƾƵƵ
E1: Room temperature sensor failure
ƾƶƶ
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
Malfunction
Detection
Malfunction When the thermistor 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
Ŷ
Faulty connector connection
Causes
Ŷ
Faulty thermistor
Ŷ
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 the thermistor on the PCB, and measure the resistance of thermistor using tester.The
relationship between normal temperature and resistance is shown in the value of indoor thermistor.
Thermistor resistance check
Is it normal?
Yes
NO
Yes
Is it normal?
NO
Check the connector connection.
Replace the thermistor
Replace the indoor unit PCB
Correct the connection
Summary of Contents for GES-NX2G25OUT
Page 11: ...Pinping diagrams Domestic air conditioner 4 Piping diagrams 9 ...
Page 12: ...Operation range Domestic air conditioner 5 Operation range 10 ...
Page 39: ...Service diagnosis 37 Domestic air conditioner ...
Page 61: ...Removal Procedure 1 Removal of Outdoor Panel ...
Page 62: ...Removal Procedure n o i t i d n o C r i A c i t s e m o D 2 ...
Page 63: ...4 Removal Procedure 3 Domestic Air Condition ...
Page 64: ...Removal Procedure 2 Removal of Electrical Box RPHVWLF LU RQGLWLR ...
Page 65: ...Removal Procedure 3 Removal of Fan and Fan Motor RPHVWLF LU RQGLWLR ...
Page 66: ...Removal Procedure 4 Removal of Fan Motor Brcked and Partition ...
Page 67: ...Removal Procedure 7 Domestic Air Condition ...
Page 68: ...Removal Procedure 5 Removal of Compressor and Heat Exchanger ...