Fault Codes/Rehlko/FREQUENCY HIGH WARNINGRehlkoFREQUENCY HIGH WARNINGUnclassifiedGeneralWhat This Code MeansFrequency High Warning displayPossible Causes•Over Frequency ParalleledSuggested Actions1Press AUTO or OFF (pressing OFF will stop the generator set)Related Rehlko Fault CodesFREQUENCY LOW SD *FREQUENCY LOW SHUTDWNFREQUENCY HIGH SD *FREQUENCY LOW WARNINGFREQ HIGH SHUTDWNGENERATOR FREQUENCY HIGHFILE ERROR SHUTDWNGENERATOR FREQUENCY HIGH SDFAULTGENERATOR FREQUENCY LOWFAILURE TO ACQUIRE STANDBYGENERATOR FREQUENCY LOW SDBrowse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for FREQUENCY HIGH WARNING on your specific Rehlko unit — cited to the OEM manual, not a forum guess.Your question about FREQUENCY HIGH WARNINGGET THE ANSWERFree account required — we'll bring your question with you.