Troubleshooting by Indication on the Remote Controller Si34-603140 Troubleshooting3.8 “AJ” Indoor Unit: Malfunction of Capacity DeterminationDeviceRemotecontroller displayAJApplicableModelsAll indoor unit modelsMethod ofMalfunctionDetectionCapacity is determined according to resistance of the capacity setting adaptor and the memoryinside the IC memory on the indoor unit PC board, and whether the value is normal or abnormalis determined.MalfunctionDecisionConditionsOperation and:1. When the capacity code is not contained in the PC board’s memory, and the capacity settingadaptor is not connected.2. When a capacity that doesn’t exist for that unit is set.SupposedCauses You have forgotten to install the capacity setting adaptor. Defect of indoor unit PC boardTroubleshooting(V2783)CautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.Install a capacity setting adaptor.Replace the indoor unit PC board.NONOYESYESReplace the indoor unit PC board.The indoorunit PC board was replacedwith a replacementPC board.The indoorunit is a model thatrequires installation of acapacity setting adaptorwhen replacing thePC board.
