Troubleshooting by Indication on the Remote Controller SiBE31-801_C285 Troubleshooting4.40 “LC” Outdoor Unit: Malfunction of Transmissionbetween Inverter and Control PCBRemoteControllerDisplayLCApplicableModelsRTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit)Method ofMalfunctionDetectionCheck the communication state between inverter PCB and control PCB by micro-computer.MalfunctionDecisionConditionsWhen the correct communication is not conducted in certain period.SupposedCauses Malfunction of connection between the inverter PCB and outdoor main PCB Defect of outdoor main PCB (transmission section) Defect of inverter PCB Defect of noise filter Faulty fan inverter Incorrect type of inverter PCB Faulty inverter compressor Faulty fan motor External factor (noise etc.)
