Troubleshooting
138 Electrical Control System
2.4.4 For the outdoor unit
2.4.4.1. F4 malfunction
OutdoorEEPROMmalfunction
E0display
Yes
Replace the outdoor main PCB
Power off, then restart the unit 2
minutes later
EEPROM: An electrically erasable programmable read-only memory whose contents can be erased and
reprogrammed using a pulsed voltage.
F4
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