Troubleshooting by Remote Controller Si20-701_B
239
3.46
H9
Outdoor Air Thermistor
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
îš„ Defective outdoor air thermistor
îš„ Defective outdoor air thermistor connector connection
îš„ Defective outdoor unit PCB
Troubleshooting
Is the
thermistor
normal?
NO
YES
Replace the
outdoor air
thermistor.
If contact is OK,
replace the
outdoor unit
PCB.
Disconnect the outdoor
air thermistor from the
outdoor unit PCB and
measure the resistance.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
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