Troubleshooting
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
Detection
indoor/outdoor transmission signal.
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
Check the combination of the
indoor and outdoor unit.
68
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
NO
OK?
YES
Are the
NO
connecting wires
connected properly?
YES
SiMX042215E
Match the compatible models.
Correct the connection.
Check the part numbers of the
indoor and outdoor unit PCB
with the Parts List.
If not matched, change for the
correct PCB.
(R23289)
Part 6 Service Diagnosis