10.4.2 EEPROM abnormal
Indoor Display E4: Indoor EEPROM error
Indoor display F12: Outdoor EEPROM error; Outdoor LED1 flash1times
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.
Service diagnosis
Domestic air conditioner
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