H9 Outdoor Air Thermistor System Abnormality - Daikin R71FUV1 Service Manual

Troubleshooting by Remote Controller
H9
3.46
System Abnormality
Remote Controller Display
H9
Applicable Models
RY-F/FU, R(Y)-G/GA/KU/LU, RR-M
Error Decision Conditions
Case where the outdoor air thermistor has a short or
open circuit
Supposed Causes
Defective outdoor air thermistor
Defective outdoor air thermistor connector connection
Defective outdoor unit PCB
Troubleshooting
Caution
Disconnect the outdoor
air thermistor from the
outdoor unit PCB and
measure the resistance.
Is the
thermistor
normal?
YES
Outdoor Air Thermistor
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
Si20-701_B
Replace the
outdoor air
thermistor.
If contact is OK,
replace the
outdoor unit
PCB.
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