SiBE04-809 Troubleshooting
Service Diagnosis 87
4.9 Unspecified Voltage (between Indoor and Outdoor Units)
Remote
Controller
Display
UA
Method of
Malfunction
Detection
The supply power is detected for its requirements (different from pair type and multi type) by the
indoor / outdoor transmission signal.
Malfunction
Decision
Conditions
The pair type and multi type are interconnected.
Supposed
Causes
Wrong models interconnected
Wrong indoor unit PCB mounted
Indoor unit PCB defective
Wrong outdoor unit PCB mounted or defective
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the indoor and outdoor unit
model numbers.
(R8308)
YES
NO
NO
YES
Check the code numbers
(2P01234, for example) of the
indoor and outdoor unit PCB with
the Parts List.
Match the compatible
models.
Replace the indoor unit
PCB (or the outdoor unit
PCB).
Change for the specified
PCBs.
Matched compatibly?
Indoor unit and
outdoor unit matched?
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