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Si12-308
Troubleshooting
Service Diagnosis
181
5.9
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 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
Troubleshooting
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)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
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.
Summary of Contents for Super Multi NX B series
Page 7: ...Si12 308 vi Table of Contents ...
Page 29: ...List of Functions Si12 308 18 List of Functions ...
Page 71: ...Specifications Si12 308 60 Specifications ...
Page 175: ...Instruction Si12 308 164 System Configuration ...
Page 227: ...Check Si12 308 216 Service Diagnosis ...
Page 288: ...Si12 308 Wiring Diagrams Appendix 277 FTXD50BVMC FTXD60 71BVMC ...
Page 299: ...Si12 308 iv Index ...