Gree GMV-400WM/G-X

Gree GMV6 DC Inverter VRF Units Service Manual
100
Yes
"d3" Ambien t Temp erature
Sensor Fault
Remove the foreign
matters and plug it tightly
The detection circuit may
operate impro perly
Yes
Replace the main control
board
No
Is the p roblem solved after
the ambient tempera ture sensor
is re placed?
Whether the i nterface
terminal between the main board
and ambie nt temperature sensor g ets loose
or contains foreig n matters?
No
2.45 "d4" Inlet Pipe Temperature Sensor Fault
Fault display: wired controller of indoor unit and receiver of indoor unit display
Fault diagnosis:
The temperature sensor detection circuit samples the AD value of temperature sensor and
determines the range of AD value.
When the sampled AD value exceeds the limits for 5 consecutive seconds, the fault is generated.
Possible causes:
■ Poor contact between the inlet pipe temperature sensor and the main board interface;
■ Abnormal inlet pipe temperature sensor;
■ Abnormal detection circuit.
Troubleshooting: