Indoor Fan Overloading Protection; F0 Failure Of Indoor Room Sensor At Air Intake - Gree FGR20/BNa-M Service Manual

Duct Type Split Air Conditioner
Service Manual

2.7 Indoor Fan Overloading Protection

Indoor fan overloading malfunction
Yes
If connection line of indoor unit is
connected properly
Yes
If indoor fan's relay is properly set
Yes
If relay is normal
Yes
Check if static pressure of duct is
matched with design and models
Yes
If indoor motor is normal
Eliminate malfunction

2.8 F0 Failure of Indoor Room Sensor at Air Intake

Failure of Indoor Room Sensor at Air Intake
check if the plug of the temperature sensor is
correctly connected with socket on the main board?
Remove the sensor to check if the resistance value
is ok?
Replace main board of the indoor unit
56
No
Correct connection
No
Set correct value
No
Replace relay
Increase static pressure of duct
No
(select to clo se the air valve
smaller)
No
Replace indoor motor
No
Yes
No
Yes
check the directions of the
plug and socket
replace temperature sensor