Si20-701_B
Symptom-based Troubleshooting
32
Troubleshooting
YES
NO
YES
NO
Wait until power
returns.
Is the
power switch
OFF or fuse for power
switch blown?
Turn ON the
power switch or
replace the fuse.
If high-harmonics
circuit breaker is
not used on the
inverter
compressor,
replace the circuit
breaker.
Is there
power failure?
YES
NO
Normal. Start up
operation after 3
minutes (3-min.
standby).
YES
NO
Normal. Start up
operation after 3
minutes (3-min.
standby).
YES
NO
Diagnose based
on error code on
remote controller.
YES
NO
Diagnose based
on error code on
remote controller.
Check the
electric system.
Defective electric
component
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Is the
operation
switch pressed
repeatedly?
Is the
thermostat
changed and reset
again?
Is the
operation
lamp on LCD remote
controller
blinking?
Is the
operation
lamp on indoor unit
signal receiving part
blinking?