9.2 Trouble shooting
9.2.1 EEPROM parameter error diagnosis and solution(E0/F4)
Malfunction decision
conditions
Indoor or outdoor PCB main chip does not receive feedback
from EEPROM chip.
● Installation mistake
● PCB faulty
Yes
Replace the indoor/outdoor
main PCB.
Power off, then restart the
unit 2 minutes later.
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.
Note: The two photos above are only for reference, it’s may be not same totally with the ones
on your side.
9.2.2 Zero crossing detection error diagnosis and solution
Yes
Indoor main PCB is
defective. Replace indoor
main PCB.
Power off, then restart the
unit 2 minutes later
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