Unspecified Voltage (Between Indoor Unit And Outdoor Unit) - Daikin FTX20K(2)V1B Service Manual

Troubleshooting
4.8 Unspecified Voltage (Between Indoor Unit and Outdoor
Unit)
UA
Error Code
The supply power is detected for its requirements (pair type is different from multi type) by the
Method of Error
indoor / outdoor transmission signal.
Detection
The pair type and multi type are interconnected.
Error 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
Check the
indoor
59
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
combination of the
and outdoor unit.
OK?
YES
Are the
connecting wires connected
property?
YES
NO
NO
SiBE041525F
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)
Service Diagnosis