Troubleshooting by Indication on the Remote Controller ESIE09-08130 Troubleshooting3. Troubleshooting by Indication on the RemoteController3.1 “A1” Indoor Unit: PC Board DefectRemote ControlDisplayA1Subcode 0ApplicableModelsAll 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.Does the systemreturn to normal? YESCautionExternal factor other thanmalfunction (for example,noise etc.).Replace the indoor unit PCboard (A1P). (V2777)NOBe sure to turn off power switch before connecting or disconnecting connector,otherwise parts may be damaged.
