Troubleshooting for Outdoor Unit SiEBE18-526
312 Troubleshooting
7.19 Malfunction of Transmission between Inverter and
Control PCB
Remote
Controller
Display
LC
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Check the communication state between inverter PCB and control PCB by micro-computer.
Malfunction
Decision
Conditions
When the correct communication is not conducted in certain period.
Supposed
Causes
Malfunction of connection between the inverter PCB and outdoor control PCB
Defect of outdoor control PCB (transmission section)
Defect of inverter PCB
Defect of noise filter
External factor (Noise etc.)
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