Daikin R407C PLUS - Indoor Unit: Malfunction of Thermistor (R1 T) for Air Inlet

Si33-105 Troubleshooting
Troubleshooting R407C PLUS Series Heat Recovery System 167
3.11 Indoor Unit: Malfunction of Thermistor (R1T) for Air Inlet
Remote
Controller
Display
C9
Supposed
Causes
!
Defect of indoor unit thermistor (R1T) for air inlet
!
Defect of indoor unit PC board
Troubleshooting
Replace the indoor unit PC board.
Connect the thermistor and turn
on again.
NO
NO
Replace the thermistor (R1T).
YES
YES
Connector
is connected to X13A of
the indoor unit PC
board.
Resistance
is normal when
measured after
disconnecting the thermistor
(R1T) from the indoor unit
PC board. (7.2kΩ~
112kΩ)
(VF038)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.