38MGRBQ: Service Manual
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33
DIAGNOSIS AND SOLUTION
Indoor unit EEPROM parameter error diagnosis and solution
Troubleshooting
NOTE: EEPROM: a type of read-only memory. The contents can be erased and reprogrammed using a pulsed voltage to locate the EEPROM
chip.
ERROR CODE
REFER TO INDOOR UNIT SERVICE MANUAL
MALFUNCTION DECISION
CONDITIONS
Indoor or outdoor PCB main chip does not receive feedback from EEPROM
SUPPOSED CAUSES
Faulty PCB
Installation mistake
Yes
Replace the indoor/outdoor
main PCB.
Power off, then restart the
unit 3 minutes later. Does
a problem still remain?
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