Mars COMFORT-AIRE Century VMH 9 SU Series User Manual

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.
Possible 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.

Mars COMFORT-AIRE Century VMH 9 SU Series Specifications

General

Series	VMH 9 SU
Cooling Capacity	9, 000 BTU/h
Power Supply	220-240V, 50Hz
Refrigerant	R410A
Operating Temperature (Cooling)	18°C to 43°C
Operating Temperature (Heating)	-7°C to 24°C
Dimensions (Outdoor Unit)	700 x 275 x 550 mm