Outdoor Unit Trouble Shooting - Pioneer YN020GMFI22M2D Service Manual

8.4.2 Outdoor unit trouble shooting

8.4.2.1 E0 (Outdoor unit EEPROM parameter error) diagnosis and solution
Error Code
Malfunction decision
conditions
Supposed causes
Trouble shooting:
EEPROM: a read‐only memory whose contents can be erased and reprogrammed using a pulsed voltage. For
the location of EEPROM chip, please refer to the below photos.
E0
PCB main chip does not receive feedback from EEPROM chip
● Installation mistake
● PCB faulty
Outdoor EEPROM malfunction
Outdoor EEPROM malfunction
Power off, then restart the
Power off, then restart the
unit 3 minutes later
unit 3 minutes later
Yes
Replace the outdoor main
Replace the outdoor main
PCB
PCB