Daikin RXYQ96PYDN, Service Manual

Page: 397 / 567

Troubleshooting by Indication on the Remote Controller SiUS34-801A_b
382 Troubleshooting
3.28
J5
Outdoor Unit: Malfunction of Thermistor (R8T or R10T)
for Suction Pipe
Remote
Controller
Display
J5
Applicable
Models
RXYQ72P~240PYDN, PTJU
REYQ72P~240PYDN, PTJU
Method of
Malfunction
Detection
Temperature detected by the suction pipe temperature thermistor.
Malfunction
Decision
Conditions When a short circuit or an open circuit in the suction pipe temperature thermistor is detected.
Supposed
Causes
Defect of thermistor (R8T or R10T) for outdoor unit suction pipe
Defect of outdoor unit PC board (A1P)
Defect of thermistor connection
Troubleshooting
∗
Refer to the Thermistor Resistance / Temperature Characteristics table on Page 523.
(V3073)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Resistance
is normal when
measured after dis-
connecting the thermistor
(R8T or R10T) from the
outdoor unit PC
board. (1.8k
Ω
to
800k
Ω
)
Replace outdoor unit PC board
(A1P).
Connect the connector and turn on
again.
NO
NO
YES
YES
Connector
is connected to
X30A, of outdoor unit
PC board.
(A1P)
Confirm which discharge
thermistor is abnormal using
outdoor unit "monitor mode".
(Refer to P334~335)
Replace the thermistor R8T or
R10T.