Gree GMV6 DC Inverter VRF Units Service Manual
Yes
"d7" Humidity Sen sor Fault
Remove the foreign
matters and plug it tightly
The detection circuit may
operate impro perly
Yes
Replace the main control
board
No
Is th e p roblem so lved after the
humidity sensor is replaced?
Whether the i nterface
terminal between the main board
and hu midity sensor gets lo ose or
contains foreign matters?
No
2.49 "d8" Water Temperature Sensor Fault (Reserved)
2.50 "d9" Jumper Cap Fault
Fault display: wired controller of indoor unit and receiver of indoor unit display
Fault diagnosis:
A fault is reported if the jumper cap does not match the main board.
Possible causes:
■ The jumper cap is not installed;
■ The jumper cap is numbered incorrectly;
■ Abnormal detection circuit.
Troubleshooting:
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