For Gas Pipes; C5" Indoor Unit: Malfunction Of Thermistor (R31T, R32T) For Gas Pipes - Daikin REYQ72 Serveice Manual

SiUS39-602
2.10 " C5 " Indoor Unit:

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
Supposed
Causes
Troubleshooting
∗
1: Refer to thermistor resistance / temperature characteristics table on P.240.
Troubleshooting
Malfunction of Thermistor (R31T, R32T)
Defect of indoor unit thermistor (R31T, R32T) for gas pipe
Defect of indoor unit PC board
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
(R31T, R32T) from the
indoor unit PC
board.(0.6kΩ~
360kΩ)
∗1
YES
Troubleshooting by Indication on the Remote Controller
NO
NO
Connect the thermistor and turn
on again.
Replace the thermistor (R31T,
R32T).
Replace the indoor unit PC board.
(V2785)
139