Troubleshooting
Si10-417
146
Service Diagnosis
5.3.11 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 separate type and multi type) by the
indoor / outdoor transmission signal.
Malfunction
Decision
Conditions
The separate 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
Trouble
shooting
Check the indoor and outdoor
unit model numbers.
Match the compatible
models.
Change for the
specified PC board (1)
or (2).
Replace the indoor
unit PC board (1) (or
the outdoor unit PC
board).
(Q0347)
Indoor unit
and outdoor unit
matched?
NO
YES
YES
Matched compatibly?
NO
Check the code numbers
(2P01234, for example) of the
indoor and outdoor unit PC
boards with the Parts List.
Caution
Be sure to turn off power switch before connect or
disconnect connector, or parts damage may be occurred.
Si10-417.fm Page 146 Wednesday, September 22, 2004 6:38 PM
