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Si20-701_B
Troubleshooting by Remote Controller
122
Troubleshooting
Refer to P.460.
C4
: Heat exchanger thermistor
C5
: Gas pipe thermistor
C9
: Suction air thermistor
Is it
normal?
NO
YES
YES
Correct the
connection.
Check
the thermistor
resistance. Is it
normal?
NO
YES
Replace the
thermistor.
Check the contact
between thermistor and
PCB.
Check the connector
connection.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
Correct the
contact.
Replace the
outdoor unit
PCB.
CHECK 3
Is the contact OK?
CHECK 3