Gree GMV-280WM/G-X Service Manual

Gree GMV6 DC Inverter VRF Units Service Manual
82
Yes
No
No
"b3" Defrosting
Temperature Sensor 2
Fault
Whether th e interface
terminal between the main boa rd and
temperature sensor gets loose or
contains forei gn matters?
Remove the foreign
matters and plug it tightly
Whether th e temperatur e
sensor is abn ormal?
Yes
Replace the tempera ture
sensor
The detection circuit may
operate impro perly
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 main board interface;
■ Abnormal temperature sensor;
■ Abnormal detection circuit.
Troubleshooting:

Gree GMV-280WM/G-X Specifications

General

Brand	Gree
Model	GMV-280WM/G-X
Category	Inverter
Language	English