37
Installation and Maintenance
Service Manual
Malfunction display: F3 Failure of Outdoor Ambient Sensor
N
N
Y
Y
Y
Failure of outdoor Ambient sensor
Check if the plug of the temperature sensor is correctly
connected with socket on the mainboard
Remove the sensor to check if the resistance value is ok
Replace mainboard of the indoor uint
Replace temperature sensor
Check the direction of the plug
and socket
Malfunction display: F5 Failure of Exhaust Temp. Sensor
N
N
Y
Y
Y
Failure of Exhaust Temp. sensor
Check if the plug of the temperature sensor is correctly
connected with socket on the mainboard
Remove the sensor to check if the resistance value is ok
Replace mainboard of the indoor uint
Replace temperature sensor
Check the direction of the plug
and socket
