Heat Exchanger - Daikin RXYQ96PYDN Service Manual

SiUS34-801A_b
J4
3.27 Outdoor Unit: Malfunction of Temperature Sensor for
Heat Exchanger Gas (R2T or R11T)
J4
Remote
Controller
Display
Applicable
RXYQ72P~240PYDN, PTJU
Models REYQ72P~240PYDN, PTJU
Method of
Temperature detected by each thermistor.
Malfunction
Detection
Malfunction
In operation, when a thermistor is disconnected or short circuits.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗ Refer to the Thermistor Resistance / Temperature Characteristics table on Page 523.
Troubleshooting
Defective connection of thermistor
Defective thermistor
Defective outdoor unit PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Confirm which thermistor is
abnormal using outdoor unit
"monitor mode".
(Refer to P334~335)
Connector is
connected to X30A of
outdoor PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
(R2T or R11T) from the
outdoor unit PC
board. (1.8kΩ
to 800kΩ)
YES
Troubleshooting by Indication on the Remote Controller
NO
NO
Connect the connector and turn on
again.
Replace the thermistor (R2T or
R11T)
Replace outdoor unit PC board
(A1P).
(V3070)
381