Check - Daikin SkyAir GQI-Eco Series Service Manual

SiBE281013

4.39 Check

CHECK 1

Check the Thermistors
Thermistors
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'' on P.180
"Functions of Main Components and Thermistors" on P.25
Overview of Thermistors
The table below contains an overview of the thermistors:
Indoor
FCQG, FHQG
R1T
R2T
R3T
Outdoor
RZQG
R1T
R2T
R3T
R4T
R5T
R6T
R10T
Checking
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.
Service Diagnosis
Suction air thermistor
Heat exchanger thermistor
Intermediate heat exchanger thermistor
Outdoor air thermistor
Discharge pipe thermistor
Suction pipe thermistor
Heat exchanger distributor pipe thermistor
Intermediate heat exchanger thermistor
Liquid pipe thermistor
Radiation fin thermistor
Troubleshooting by Remote Controller
Thermistor
Thermistor
165