SiBE18-821_C Troubleshooting for Outdoor Unit
Troubleshooting 415
7.29 Transmission Error Between Indoor Unit and Outdoor
Unit in the Same System
Remote
Controller
Display
U9
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Transmission error within or outside of other system
Defective electronic expansion valve in indoor unit of other system
Defective indoor unit PCB in other system
Improper connection of transmission wiring between indoor and outdoor unit
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