SiEBE18-526 Troubleshooting for SkyAir Indoor UnitTroubleshooting 2775.7 Malfunction of Capacity SettingRemoteControllerDisplayAJApplicableModelsFFQ-B, FHQ-BUMethod ofMalfunctionDetectionCapacity is determined according to resistance of the capacity setting adaptor and the memoryinside the IC memory on the indoor unit PCB, and whether the value is normal or abnormal isdetermined.MalfunctionDecisionConditionsOperation and:(1)When the capacity code is not contained in the PCB’s memory, and the capacity settingadaptor is not connected.(2)When a capacity that doesn’t exist for that unit is set.SupposedCauses Failure of capacity setting adaptor connection Failure of indoor unit PCBTroubleshootingNote: Capacity is factory set in the data IC on the PCB. A capacity setting adaptor that matches thecapacity of the unit is required in the following case.If the indoor PCB installed at the factory is for some reason changed at the installation site, thecapacity will not be contained in the replacement PCB.If you connect a capacity setting adaptor to a PCB in which the capacity is memorized, thecapacity setting for the PCB will become the capacity setting of the adaptor. (Priority of capacitysetting adaptor)Turn the power supply off onceand back on.Is AJ displayed onthe remote controller?YESYESPlug a capacitor settingadaptor that matches thecapacity of the unit intoX23A. (See note)Bad contact of capacitysetting adaptor ordisconnected adaptor.Indoor unit PCBreplacementCould be outside cause(noise, etc.) other thanmalfunction.Is thecapacity settingadaptor plugged into X23Aof the indoor unitPCB?NO(Q0415)NOCautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.
