Transmission Error Between Centralized Controller And Indoor Unit - Daikin VRV IV-S RXTQ-TAVJU Series Service Manual

Troubleshooting by Error Code
4.47 Transmission Error between Centralized Controller and
Indoor Unit
UE
Error Code
Applicable
All indoor units
Models Centralized controller
Method of Error
Micro-computer checks if transmission between indoor unit and centralized controller is normal.
Detection
Error Decision
When transmission is not carried out normally for a certain amount of time
Conditions
Supposed
Causes
203
intelligent Touch Controller
Transmission error between optional controllers for centralized control and indoor unit
Connector for setting master controller is disconnected.
(or disconnection of connector for independent / combined use changeover switch.)
Defective PCB for centralized controller
Defective indoor unit PCB
SiUS331604E
Service Diagnosis