Daikin SkyAir Service Manual page 238

SiBE28-804
Check No.3
Checking the Thermistors
Thermistors If the cause of the problem is related to the thermistors, then the thermistors should be checked
prior to changing the PC board.
For more information about these thermistors, see:
Overview of The table below contains an overview of the thermistors:
thermistors
Thermistor
Indoor
Outdoor
Checking To check the thermistors, proceed as follows:
Troubleshooting
"Wiring Diagrams'' (outdoor units)
"Functions of Thermistors" on P33.
Step Action
1 Disconnect the thermistor from the PC board.
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.
Troubleshooting by Remote Controller Display / LED Display
Description
R1T Suction air thermistor
R2T Heat exchanger thermistor
R1T Ambient air thermistor
R2T Discharge pipe thermistor
R3T Suction pipe thermistor
R4T Heat exchanger thermistor
R5T Intermediate heat exchanger thermistor
R6T Liquid pipe thermistor
R10T Power module fin thermistor
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