Daikin R407C PLUS - Indoor Unit: Malfunction of Thermistor (R2 T) for Liquid Pipe

Si33-105 Troubleshooting
Troubleshooting R407C PLUS Series Heat Recovery System 165
3.9 Indoor Unit: Malfunction of Thermistor (R2T) for Liquid
Pipe
Remote
Controller
Display
C4
Supposed
Causes
!
Defect of thermistor (R2T) for liquid pipe
!
Defect of indoor unit PC board
Troubleshooting
(VF036)
Replace the indoor unit PC board.
Connect the thermistor and turn
on again.
NO
NO
Replace the thermistor (R2T).
YES
YES
Connector
is connected to X12A
of the indoor unit
PC board.
Resistance
is normal when
measured after
disconnecting the thermistor
(R2T) from the indoor
unit PC board
(3.5kΩ~
360kΩ)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.