Fault Codes/Generac/T1GeneracT1UnclassifiedGeneralWhat This Code MeansBlown T1 FusePossible Causes•Blown fuse F3Suggested Actions1Replace blown fuse as needed2Inspect and test fuses for an OPEN condition with a DMM set to measure resistance3CONTINUITY should be measured across the fuseRelated Generac Fault CodesUNSUPPORTED DEVICEWIRING ERRORSERVICE BYELLOW LED MAINTENANCESERVICE ARED LED ALARMOVERLOAD REMOVE LOADOVERLOADOL 014431OL 014428OL - OPEN CIRCUITMBrowse all Generac fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for T1 on your specific Generac unit — cited to the OEM manual, not a forum guess.TRY IT FREE