J4" Outdoor Unit: Malfunction Of Temperature Sensor For Heat Exchanger Gas (R2T) - Daikin RTSQ20PY1 Service Manual

SiBE31-801_C
J4
4.27 " " Outdoor Unit: Malfunction of Temperature Sensor
for Heat Exchanger Gas (R2T)
J4
Remote
Controller
Display
Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit)
Models
Method of Detect malfunction based on the temperature detected by each thermistor.
Malfunction
Detection
Malfunction In operation, when a thermistor is disconnected or short circuits.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗
Troubleshooting
Defective connection of thermistor
Defective thermistor
Defective outdoor unit PCB
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Connector is
connected to X30A
of outdoor PCB
(A1P).
YES
Resistance is normal
when measured after
disconnecting the
thermistor (R2T) from
the outdoor unit PCB.
(1.8kΩ to 800kΩ)
YES
Refer to "Thermistor Resistance / Temperature Characteristics" table on P.408.
Troubleshooting by Indication on the Remote Controller
NO
NO
Connect the connector and turn on
again.
Replace the thermistor (R2T)
Replace the outdoor unit PCB
(A1P).
264