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

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Gree GMV6 DC Inverter VRF Units Service Manual
123
2.77 "F1" High-pressure Sensor Fault
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
The sensor detection circuit samples the AD value of high pressure 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 high pressure sensor and the mai n board interface;
■ Poor contact between high pressure sensor and part where the pressure is detected;
■ Abnormal high pressure sensor;
■ Abnormal sensor detection circuit.
Troubleshooting:
Yes
No
"F1" High Pressure Sensor
Fault
Remove the foreign
matters and plug it tightly
Yes
The detection circuit may
operate improperly
Yes
Replace the main control
board
Whether there is
poor contact between high pressure
sensor and the part where the pressure
is detected?
No
Whether the interface
terminal between the main board
and the sensor gets loose or contains
foreign matters?
Remove the foreign
matters and plug it tightly
No
Is the problem solved
after the sensor is replaced?