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Service Manual -
VMH 9/12/18/24 SU & VMH30/36S D Series
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9.3 Diagnosis and Solution
9.3.1 EEPROM parameter error diagnosis and solution(E0/F4)
Error Code
E0/F4
Malfunction conditions
Indoor or outdoor PCB main chip does not receive feedback
from EEPROM chip.
Possibl
e
causes
●
Installation
error
●
PCB faulty
Troubleshooting:
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.
Indoor PCB
Outdoor PCB
Note: The two photos above are only for reference, they may not be the same as your unit.