LG CT09F Service Manual page 67

Part 4 Trouble Shooting
6.6 Troubleshooting Indoor Error
CH 09 (Indoor unit EEPROM error)
Error No.
09
Indoor unit EEPROM error
■ Error diagnosis and countermeasure flow chart
- Replace the indoor unit PCB, and then make sure to perform Auto addressing and input the address of
central control
Error Type Error Point
1. Error developed in communication
Error occur in
between the micro- processor and the
EEPROM
EEPROM on the surface of the PCB.
of the Indoor PCB
2. ERROR due to the EEPROM damage
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