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38MGRBQ: Service Manual
DIAGNOSIS AND SOLUTION
Indoor unit EEPROM parameter error diagnosis and solution
ERROR CODE
MALFUNCTION DECISION
CONDITIONS
SUPPOSED CAUSES
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.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
REFER TO INDOOR UNIT SERVICE MANUAL
Indoor or outdoor PCB main chip does not receive feedback from EEPROM
Faulty PCB
Installation mistake
Power off, then restart the
unit 3 minutes later. Does
a problem still remain?
Yes
Replace the indoor/outdoor
main PCB.
33
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