Daikin R71FUV1 Service Manual page 247

Si20-701_B
Remote Controller Display
H9
Applicable Models
RZ(Y), CMSQ
Method of Error Detection
The detection is based on abnormal resistance value of
the thermistor.
Error Decision Conditions
When the outdoor air thermistor has short circuit or open
circuit.
Supposed Causes
Defective outdoor air thermistor
Defective connection of outdoor air thermistor
connector
Defective outdoor unit PCB
Troubleshooting
Caution
Is
connector
connected to the
outdoor unit
PCB?
Disconnect
thermistor from
outdoor unit PCB, and
measure resistance.
Is resistance
normal?
240
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
NO
YES
Troubleshooting by Remote Controller
Connect the
thermistor, and
operate the unit.
Replace the
thermistor.
Replace the
outdoor unit
PCB.