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Service diagnosis
34
Domestic air conditioner
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
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.
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