Specifications

Troubleshooting (OP: Schedule Timer) SiUS39-601
200 Troubleshooting
4. Troubleshooting (OP: Schedule Timer)
4.1 “UE” Malfunction of Transmission Between Central Remote
Controller and Indoor Unit
Remote
Controller
Display
UE
Applicable
Models
Schedule timer
Indoor units
Method of
Malfunction
Detection
Microcomputer checks if transmission between indoor unit and centralized controller is normal.
Malfunction
Decision
Conditions
When transmission is not carried out normally for a certain amount of time
Supposed
Causes

Malfunction of transmission between centralized controller and indoor unit

Disconnection of connector for setting master controller (or individual/combined switching
connector)

Defect of schedule timer PC board

Defect of indoor unit PC board