SiBE28-805 Troubleshooting by Indication on the Remote ControllerTroubleshooting 1393.2 “A1” Indoor Unit: PC Board DefectRemoteControllerDisplayA1ApplicableModelsAll indoor unit modelsMethod ofMalfunctionDetectionCheck data from E²PROM.MalfunctionDecisionConditionsWhen data could not be correctly received from the E²PROME²PROM : Type of nonvolatile memory. Maintains memory contents even when the powersupply is turned off.SupposedCauses Defect of indoor unit PC boardTroubleshootingTurn power supply OFF, thenpower ON again.Doesthe system returnto normal?YESCautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.Replace the indoor unit PCboard.The indoor unit PC board isnormal.External factor other thanmalfunction (for example,noise etc.).NO
