Unspecified Voltage (Between Indoor Unit And Outdoor Unit) - Daikin FTXN25KEV1B Service Manual

Troubleshooting
4.7 Unspecified Voltage (between Indoor Unit and Outdoor
Unit)
UA
Remote
Controller
Display
Method of The supply power is detected for its requirements (different from pair type and multi type
models) by the indoor / outdoor transmission signal.
Malfunction
Detection
Malfunction Pair type and multi type models are interconnected.
Decision
Conditions
Supposed
Causes
Troubleshooting
Check the code numbers
(2P01234, for example) of the
indoor and outdoor unit PCB with
the Parts List.
62
Wrong models interconnected
Wrong wiring of connecting wires
Wrong indoor unit PCB or outdoor unit PCB mounted
Defective indoor unit PCB
Defective outdoor unit PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Check the combination of the
indoor and outdoor unit.
OK?
YES
Are the
connection wires connected
property?
YES
Matched compatibly?
YES
NO
NO
NO
SiBE041102_A
Match the compatible models.
Correct the connection.
Change for the correct PCB.
Replace the indoor unit PCB
(or the outdoor unit PCB).
(R11707)
Service Diagnosis