Unspecified Voltage (Between Indoor And Outdoor Units) - Daikin FTKE25BVM Service Manual

Troubleshooting
5.9

Unspecified Voltage (between Indoor and Outdoor Units)

UA
Remote
Controller
Display
Method of The supply power is detected for its requirements (different from separate type and multi type)
by the indoor / outdoor transmission signal.
Malfunction
Detection
Malfunction The separate type and multi type are interconnected.
Decision
Conditions
Supposed
Causes
Troubleshooting
180
Wrong models interconnected
Wrong indoor unit PCB mounted
Indoor unit PCB defective
Wrong outdoor unit PCB mounted or defective
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check the indoor and outdoor unit
model numbers.
Indoor unit and outdoor unit
matched?
YES
Check the code numbers
(2P01234, for example) of the
indoor and outdoor unit PC boards
with the Parts List.
Matched compatibly?
YES
NO
NO
Si12-411A
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)
Service Diagnosis