Fault Codes/Generac/SLOW-START ALARMGeneracSLOW-START ALARMUnclassifiedStartingWhat This Code MeansSlow-startPossible Causes•Failed 120/240 VAC coolant heaterSuggested Actions1Verify the 120/240 VAC coolant heater operation at each service visit, particularly before winter monthsRelated Generac Fault CodesSOLID FAULT WARNING ON DISPLAYSTEPPER OVERCURRENT REDRPM SENSE LOSSUNDERSPEED REDOVERSPEED REDUNDERVOLTAGE REDOVERCRANK REDNOT ACTIVATEDMISWIREMILLOW VOLTS REMOVE LOAD REDLOW TEMP WARNING ICON ON DISPLAYBrowse all Generac fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for SLOW-START ALARM on your specific Generac unit — cited to the OEM manual, not a forum guess.TRY IT FREE