J6 Heat Exchanger Thermistor System Abnormality - Daikin R71FUV1 Service Manual

Si20-701_B
J6
3.51
System Abnormality
Remote Controller Display
J6
Applicable Models
RY-F/FU, R(Y)-G/GA/KU/LU, RR-M
Error Decision Conditions
Case where the heat exchanger thermistor has a short or
open circuit
Supposed Causes
Defective heat exchanger thermistor
Defective heat exchanger thermistor's connector
connection
Defective outdoor unit PCB
Troubleshooting
Caution
Disconnect the heat
exchanger thermistor
from the connector on the
outdoor unit PCB and
measure the resistance.
Is the
thermistor normal?
250
Heat Exchanger Thermistor
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
Troubleshooting by Remote Controller
Replace the heat
exchanger
thermistor.
If contact is OK,
replace the
outdoor unit
PCB.