Unspecified Voltage (Between Indoor Unit And Outdoor Unit) - Daikin FTXR-T Series Service Manual

SiUS041829E
4.9 Unspecified Voltage (Between Indoor Unit and Outdoor
Unit)
UA
Error Code
Method of Error
The supply power is detected for its requirements (pair type is different from multi type) by the
indoor/outdoor transmission signal.
Detection
Error Decision
The pair type and multi type are interconnected.
Conditions
Supposed
 Wrong models interconnected
Causes  Wrong wiring of connecting wires
 Wrong indoor unit PCB or outdoor unit PCB mounted
 Defective indoor unit PCB
 Defective outdoor unit PCB
Troubleshooting
Part 6 Service Diagnosis
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
connecting wires connected
properly?
YES
NO
NO
Troubleshooting
Match the compatible models.
Correct the connection.
Check the code numbers
(2P012345, for example) of the
indoor and outdoor unit PCB
with the Parts List.
If not matched, change for the
correct PCB.
(R20435)
83