Malfunction Display: E9 Full Water Protection; Malfunction Display: F2 Failure Of Evaporator Temp. Sensor - Gree GWHD14NK3BO Service Manual

Troubleshooting

Malfunction display: E9 Full Water Protection

Full Water Protection
Check if water overflow
Check if the water drainage
pump works
Check if the water drainage pipe is
jammed or if water flows smoothly
Clear the water drainage pipe

Malfunction display: F2 Failure of Evaporator Temp. Sensor

80
Y
N
Y
N
Y
Y
Failure of condenser Temp sensor
Y
Check if the plug of the temperature sensor is correctly
connected with socket on the mainboard
Y
Remove the sensor to check if the resistance value is ok
Y
Replace mainboard of the indoor uint
Check if the voltage of liquid
level switch end is ok
Check if the voltage of water
drainage pump end is ok
N
Adjust the water
drainage pipe
N
Replace the main board of
the indoor uint
Y
Check the liquid level
switch
N Replace the main board of
the indoor uint
Y
Check the cables of water
drainge pump
N
Check the direction of the plug and
socket
N
Replace temperature sensor