SiUS331604E Troubleshooting by Error Code
Service Diagnosis 202
4.46 Address Duplication of Centralized Controller
Error Code UC
Applicable
Models
All indoor units
Method of Error
Detection
The principal indoor unit detects the same address as that of its own on any other indoor unit.
Error Decision
Conditions
The error decision is made as soon as the abnormality aforementioned is detected.
Supposed
Causes
Address duplication of centralized controller
Defective indoor unit PCB
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Does the optional
remote controller for
centralized controller connect to
the indoor unit?
Address duplication on the
centralized controller. Change
the setting to avoid centralized
controller address duplication.
Replace the indoor unit PCB.
YES
NO
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