Troubleshooting by Remote Controller Si20-701_B
439
3.104
UE
Transmission Error
between Centralized
Controller and Indoor Unit
Remote Controller Display
UE
Applicable Models
FMCQ, FMDQ-A7/B7
Centralized controller
Schedule timer
intelligent Touch Controller
Method of Error Detection
Micro-computer checks if transmission between indoor
unit and centralized controller is normal.
Error Decision Conditions
When transmission is not carried out normally for a
certain amount of time
Supposed Causes
Transmission error between optional controllers for
centralized control and indoor unit
Connector for setting main controller is disconnected.
(or disconnection of connector for independent /
combined use changeover switch.)
Defective PCB for centralized remote controller
Defective indoor unit PCB
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