Gree GMV-PD140W/NAB-K

104
DC Inverter Multi
VRF Service Manual
2.6 Water-full protection
Yes
Yes
Yes
Yes
Yes
No No
NoNo
No
Fault display
Check if
the water overflows?
If the voltage
of liquid level switch terminal
is correct?
Replace the mainboard of indoor unit
Check the liquid level switch
Replace the mainboard of indoor unit
Check the wiring of drainage pump
If the voltage
of drainage pump terminal
is correct?
Adjust the drainage pipe
If the drainage
pipe is unblocked and if the
water flow is smooth?
If the drainage
pump is running?
Check the drainage pump
2.7 Error with room sensor, tube-inlet, tube middle and tube-exit sensor; error with room sensor, tube-
inlet, tube middle and tube-exit sensor and exhaust / casing top sensor; error with the compressor
bottom sensor
Yes
Yes
No
No
Temperature sensor error
If the plug on
temperature sensor is correctly
connected to the socket on
mainboard?
Check the orientation of plug and socket
Remove the
temperature and measure if its
resistance is within normal
range?
Replace the temperature sensor
Replace the mainboard of indoor unit