Samsung AF28FVSDA N Series Service Manual

TroubleshootingSamsung Electronics 4-7Error Indicator Cause MeasuresProduct’s state of operationat the time of malfunction(state of main component) Method ofDiagnosisIndoorFanOutdoorFan Comp.Terminal Block Fuse OpenFuse wire is not connected• Check Fuse wire• Check Terminal BlockOperationOffOperationOffOperationOff Page 4-19When Indoor unit is not respondingto communications• Inspect communications cables andcircuits of Indoor unit and OutdoorunitOperationOffOperationOffOperationOff Page 4-10When Indoor unit is not respondingto communications• Inspect communications cables andcircuits of Indoor unit and OutdoorunitOperationOffOperationOffOperationOff Page 4-10Problematic Indoorunitcommunications of OutdoorunitPBA• Check Outdoor unit PBA OperationOffOperationOffOperationOff Page 4-20Outdoor unittemperature sensorerror SHORT/OPEN• Check temperature sensor Wire• Check Outdoor unit PBAOperationOffOperationOffOperationOff Page 4-21Outdoor unit pipe temperaturesensor errorSHORT/OPEN• Check temperature sensor wire• Check Outdoor unit PBAOperationOffOperationOffOperationOff Page 4-22Outdoor unitpipe temperature sensorerror while running self-diagnosis• Check temperature sensor wire• Check Outdoor unit PBAOperationOffOperationOffOperationOff Page 4-23Temperature delivery sensor errorSHORT/OPEN• Check temperature sensor wire• Check Outdoor unit PBAOperationOffOperationOffOperationOff Page 4-24Temperature delivery sensor errorwhile running self-diagnosis• Check temperature sensor wire• Check Outdoor unit PBAOperationOffOperationOffOperationOff Page 4-23Compressor temperature sensor errorSHORT/OPEN• Check temperature sensor wire• Check Outdoor unit PBAOperationOffOperationOffOperationOff Page 4-25When Outdoor unitOutdoor unitfreezes• SET installation condition, inspectrefrigerant levelsOperationOffOperationOffOperationOff Page 4-26When Outdoor unit gets overloaded • SET installation condition, inspectrefrigerant levelsOperationOffOperationOffOperationOff Page 4-26When Outdoor unit temperaturedelivery gets overloaded• SET installation condition, inspectrefrigerant levelsOperationOffOperationOffOperationOff Page 4-26Problematic EEV-A while running self-diagnosis • Inspect pipes and SET condition OperationOffOperationOffOperationOff Page 4-26When outside temperature is above/below operation range allowed forheating• Inspect outside air temperature andSET installation condition. Checktemperature sensor WIREOperationOffOperationOffOperationOff Page 4-27Error Display (cont.)