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Troubleshooting
SiBE05-722EE
78
Service Diagnosis
Troubleshooting
RXS25/35L3V1B
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Continuously ON or OFF
Blink
Check the voltage of the
connection wires on the indoor
terminal board between No. 1
and No. 2.
NO
YES
Replace the connection wires
between the indoor unit and
outdoor unit.
Normal?
YES
(R22975)
NO
Replace the outdoor unit
PCB (main PCB).
Ground the system.
Zero-cross signal
abnormality.
Replace the outdoor unit
PCB (main PCB).
Check if the outdoor unit is
grounded.
Is LED A blinking?
Grounded?
Turn on the power again.