Service Manual
Installation and Maintenance
39
Detection and maintenance procedure for main malfunctions
1. Troubleshooting for temperature sensor F1 F2 F3 F4 FJ
Main check points:
(1) connection terminal (2)temperature sensor (3) main board
Detection procedure in details is as below :
Y
Y
N
N
N
Y
N
N
N
Y
Y
Y
Start the troubleshooting for
temperature sensor
malfunction
Insert the temperature
well
Is malfunction
eliminated?
Pull the parts uprightly
Is malfunction
eliminated?
Replace the temperature
sensor with the same
model
Is malfunction
eliminated?
Replace the controller with a new one
End
Check whether the connection
terminal between the temperature sensor
and the control board is loose or not
connected well?
Check whether there's short circuit
phenomenon because there are tripped
parts in the control board?
Check whether the resistance value
of temperature sensor is normal according
to the resistance value?