Gree GMV-1015WM/G-U, Service Manual

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Gree GMV6 DC Inverter VRF Units Service Manual
126
2.80 "F6" Discharge Temperature Sensor Fault of Compressor 2
Fault display: main board of outdoor unit, 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 30 consecutive
seconds, the fault is generated.
Possible causes:
■ Poor contact between the discharge temperature sensor and the main board interface;
■ Abnormal discharge temperature sensor;
■ Abnormal detection circuit.
Troubleshooting:
Yes
"F6" Discharge
Temperature Sensor Fault
of Compressor 2
Remove the foreign
matters and plug it tightly
The detection circuit may
operate improperly
Yes
Replace the main control
board
No
Whether the interface
terminal between the main board
and the temperature sensor gets loose or
contains foreign matters?
No
Replace the temperature sensor