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

Si12-619A
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 pair type and multi type) by the
indoor / outdoor transmission signal.
Malfunction
Detection
Malfunction The pair type and multi type are interconnected.
Decision
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
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 PCB with
the Parts List.
Matched compatibly?
YES
NO
NO
Troubleshooting
Match the compatible
models.
Change for the specified
PCB (1) or (2).
Replace the indoor unit
PCB (or the outdoor unit
PCB).
(R6954)
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