Si20-701_B Troubleshooting by Remote Controller
276
Remote Controller Display
L4
Applicable Models
RZQ-C7
Method of Error Detection
Radiation fin temperature is detected by the thermistor of
the radiation fin.
Supposed Causes
Activation of fin thermal switch (93°C or more)
Defective outdoor unit inverter PCB
Defective radiation fin thermistor
Troubleshooting
The
temperature
of the radiation fin
increased up to
93˚C.
YES
NO
YES
Defective
radiation of the
power unit
· The air-intake is
closed.
· Dirt of the
radiation fin
· The outdoor air
temperature is
high.
Turn the power off to
measure the resistance
value of the radiator fin
thermistor.
Plug and unplug the
connector for the radiation
fin thermistor to fix
correctly.
A
Is the
resistance
value of the thermistor
normal?
NO
Replace the
thermistor.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
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