Seivice diagnosis
Domestic air conditioner
1
0
.4.1 Thermistor or Related Abnormality
The temperatures detected by the thermistors are used to determine thermistor errors
when the thermistor input is more than 4.92V or less than 0.08V during compressor
operation.
z
Note: The values vary slightly in some models
■
Faulty connector connection
■
Faulty thermistor
■
Faulty PCB
* 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.
1
0
.4.2 EEPROM abnormal
*Thermistor resistance check
Yes
NO
Yes
Check the connector connection,
whether if it loose or misplug
Re-connect
NO
Replace the thermistor
Replace the indoor PCB
Is the resistance is conformity
with normal temperature
Method of
malfunction tection
Malfunction
detection conditions
*Thermistor
resistance check
Yes
Troubleshooting
E1: Room temperature sensor failure
E2: Heat-exchange sensor failure
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
Indoor display
Outdoor display
46
Содержание HSU-26HEK03/R2(DB)/O
Страница 18: ...Pinping diagrams Domestic air conditioner 4 Pinping diagrams 16 ...
Страница 19: ...Operation range Domestic air conditioner 5 Operation range 10 0 20 16 32 10 20 15 17 ...
Страница 24: ...Connector Wiring Diagram Domestic Air Conditioner PCB 2 CN2 CN3 CN4 CN5 CN6 CN7 CN11 CN10 CN1 CN8 CN9 22 ...