Gree GMV-1015WM/G-U, Руководство по обслуживанию

Страница: 83 / 331

Gree GMV6 DC Inverter VRF Units Service Manual
81
Yes
No
No
"b3" Defrosting
Temperature Sensor 2
Fault
Whether the interface
terminal between the main board and
temperature sensor gets loose or
contains foreign matters?
Remove the foreign
matters and plug it tightly
Whether the temperature
sensor is abnormal?
Yes
Replace the temperature
sensor
The detection circuit may
operate improperly
Yes
Replace the main control
board
2.20 "b4" Subcooler's Liquid Outlet Temperature Sensor Fault
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 temperature sensor and the ma in board interface;
■ Abnormal temperature sensor;
■ Abnormal detection circuit.
Troubleshooting: