Troubleshooting SiUS041829E78 Part 6 Service DiagnosisNote4.6 Front Panel Open/Close FaultError Code C7Error DecisionConditionsIf the error repeats, the system is shut down.SupposedCauses Defective reduction motor Malfunction or deterioration of the front panel mechanism Defective limit switchTroubleshootingYou cannot operate the unit by the remote controller when the front panel mechanism breaks down.1. Turn off the power.2. Remove the front panel.3. Turn on the power.(Wait until the initialization finishes.)Operate the unit by the indoor unit ON/OFF switch.YESYESYESYESNONONONOReplace the harness andreduction motor.Replace the assembly of thefront panel mechanism.Check the movement of theright and left separately byhand.Replace the assembly of thefront panel mechanism.It is supposed such asdeformation of the panel orstuffed dust.Find out the cause.Replace the limit switch.(R17249)CautionDoes the frontpanel move?Does the frontpanel mechanismmove?Does the frontpanel open/close fully?Restart. Does theerror code reappear?Restart and check themovement.Remove the front panel andcheck the movement.Be sure to turn off the power switch before connecting or disconnectingconnectors, or parts may be damaged.
