C5" Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes - Daikin R-410A Service Manual

Troubleshooting by Indication on the Remote Controller
4.10 "C5" Indoor Unit: Malfunction of Thermistor (R3T) for Gas
Pipes
C5
Remote
Controller
Display
Applicable
All indoor unit models
Models
Method of Malfunction detection is carried out by temperature detected by gas pipe thermistor.
Malfunction
Detection
Malfunction
When the gas pipe thermistor becomes disconnected or shorted while the unit is running.
Decision
Conditions
! Defect of indoor unit thermistor (R3T) for gas pipe
Supposed
! Defect of indoor unit PC board
Causes
Troubleshooting
∗ Refer to thermistor resistance / temperature characteristics table on P198.
122
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Connector is
connected to X11A
of the indoor unit PC
board.
YES
Resistance
is normal when
measured after
disconnecting the thermistor
(R3T) from the indoor
unit PC board.
(0.6kΩ~
360kΩ)
YES
NO
NO
SiBE39-402A
Connect the thermistor and turn
on again.
Replace the thermistor (R3T).
Replace the indoor unit PC board.
(V2785)
Troubleshooting