Troubleshooting by Remote Controller Si20-701_B
335
3.77
P4
Radiation Fin Thermistor or
Related Abnormality
Remote Controller Display
P4
Applicable Models
RZQ-K/H, RZQ(S)-B/C, RZR-KU/HU
Method of Error Detection
Detection by open or short circuit of the radiation fin
thermistor during the compressor stops operating.
Error Decision Conditions
When open or short circuit of the radiation fin thermistor
is detected during the compressor stops operating
Supposed Causes
îš„ Defective radiation fin thermistor
îš„ Defective outdoor unit PCB
Troubleshooting
Refer to P.459.
YES
Normal?
NO
Replace the
outdoor unit
inverter PCB.
Disconnect the connector
on inverter PCB, then
check the thermistor
resistance at the ordinary
temperature.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Is reset
possible?
NO
Replace the
outdoor unit
inverter PCB.
YES
Reset.
CHECK 1
CHECK 1
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