Unspecified Voltage (Between Indoor Unit And Outdoor Unit) - Daikin FTXN09KEVJU 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) by the
Malfunction indoor / outdoor transmission signal.
Detection
Malfunction
The pair type and multi type are interconnected.
Decision
Conditions
 Wrong models interconnected
Supposed
 Wrong wiring of connecting wires
Causes
 Wrong indoor unit PCB or outdoor unit PCB mounted
 Defective indoor unit PCB
 Defective outdoor unit PCB
Troubleshooting
88
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
Check the code numbers
(2P01234, for example) of the
indoor and outdoor unit PCB with
the Parts List.
Matched compatibly?
YES
NO
NO
NO
SiUS041111
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