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
îš„ Transmission error between optional controllers for
centralized control and indoor unit
îš„ Connector for setting main controller is disconnected.
(or disconnection of connector for independent /
combined use changeover switch.)
îš„ Defective PCB for centralized remote controller
îš„ Defective indoor unit PCB
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