Daikin R407C PLUS - Indoor Unit: Malfunction of Thermistor (R3 T) for Gas Pipes

Troubleshooting Si33-105
166 Troubleshooting R407C PLUS Series Heat Recovery System
3.10 Indoor Unit: Malfunction of Thermistor (R3T) for Gas
Pipes
Remote
Controller
Display
C5
Supposed
Causes
!
Defect of indoor unit thermistor (R3T) for gas pipe
!
Defect of indoor unit PC board
Troubleshooting
(VF037)
Replace the indoor unit PC board.
Connect the thermistor and turn
on again.
NO
NO
Replace the thermistor (R3T).
YES
YES
Connector
is connected to X11A of
the indoor unit
PC board.
Resistance
is normal when
measured after
disconnecting the thermistor
(R3T) from the indoor
unit PC board.
(0.6kΩ~360kΩ)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.