Daikin FCQ35B7V1 Service Manual page 218

Additional Checks for Troubleshooting
4.4 Checking the Thermistors
1
Thermistors
Overview of
thermistors
3 3
4
Checking
5
3–56
If the cause of the problem is related to the thermistors, then the thermistors should be checked prior
to changing the PCB.
For more information about these thermistors, see:
"Wiring Diagrams''
"Functions of Thermistors" on page 2-4.
The table below contains an overview of the thermistors:
Thermistor
Indoor R1T
R2T
R3T
To check the thermistors, proceed as follows:
Step Action
1 Disconnect the thermistor from the PCB.
2 Read the temperature and the resistor value.
3 Check if the measured values correspond with the values in the table on the next pages.
Description
Suction air thermistor
Heat exchanger thermistor
Gas pipe thermistor
ESIE05-04
Part 3 – Troubleshooting