Gree GMVVQ1015WM/C-X, Service Manual

Page: 125 / 433

Gree GMV6 HR DC Inverter VRF Units Service Manual
123
2.52 "d3" Ambient 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 ambient temperature sensor and the main board interface;
■ Abnormal ambient temperature sensor;
■ Abnormal detection circuit.
Troubleshooting:
Yes
"d3" Ambien t Temp erature
Sen sor Fault
Remove the foreign
matters and plug it tightly
The detection circuit may
ope rate impro perly
Yes
Replace th e main control
boa rd
No
Is th e p roblem so lve d after
the ambient tempera ture sensor
is re placed?
Whether th e i nter face
terminal between the main boa rd
and ambie nt temperature sensor g ets loose
or contains foreig n matters?
No
2.53 "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: