Malfunction Display: Indoor Unit Water Full Protection; Malfunction Display: Temperature Sensor Error - Gree SUPER+ MULTI ULTRA Series Service Manual

Super Free Match
Service Manual

3.7 Malfunction display: Indoor unit water full protection

Water full protection
Yes
Is the water overflow?
Yes
Check the
water drainage pump:
is it works?
Yes
water drainage pipe jammed or
water flows smoothly?
Yes
Clear the water drainage pipe

3.8 Malfunction display: Temperature sensor error

The resistance value of discharge temperature sensor is 50 KΩ;
The resistance value of outside temperature sensor and inside temperature sensor are all 15 KΩ;
The others are 20 KΩ.
MAINTENANCE 128
No
No
Is the
No
Temperature sensor error
The plug
on temperature sensor is correctly
connected to the socket on
mainboard, is it?
Yes
Remove the
temperature and measure its
resistance value: is it within
normal range?
Yes
Replace the mainboard of unit
Check the
Voltage of liquid level
switch : is it ok?
Check the
Voltage of water drainage
pump : is it ok?
Adjust the water drainage pipe
No
No
No
Maintain the liquid level
switch
Yes
Replace the mainboard of the
indoor unit
No
Maintain the cables of water
drainage pump
Yes
Replace the mainboard of the
indoor unit
Check the orientation of
plug and socket
Replace the temperature
sensor