Troubleshooting for RA Indoor Unit SiEBE18-526264 Troubleshooting4.5 Shutter Drive Motor / Shutter Limit Switch AbnormalityRemoteControllerDisplayC7Method ofMalfunctionDetectionThe shutter open / close performance is detected by the limit switch attached on its structure. Inthis way, the shutter drive motor and the shutter limit switch are checked for failure.MalfunctionDecisionConditionsWhen the shutter is open, the limit switch is closed.SupposedCauses Shutter drive motor defective Shutter limit switch defective Shutter itself deformed (warped) Shutter's sealing material too thick Detection error by broken relay harness or disconnected connector Detection error due to defective PCB (2) Foreign substance in blow portTroubleshootingCheck No.03Refer to P.265 Turn off the power.Check No. 03Check the limit switch continuity.Remove such substance.Replace the limit switch.Reconnect the connector orreplace the relay harness.Replace the shutter drivemotor or the PCB (2).Check the shutter's sealingmaterial.Check the shutter fordeformation or its sealingmaterial. (Q0410)CautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.Foreign substance inthe shutter structure?YESNONONOYESShutter closed? NOShutter opening itself? YESYESYESNORelay harnessbroken or connectordisconnected?Limit switch on power?Open the shutter and turn on thepower.
