Fault Codes/Blue Star Power Systems/F41Blue Star Power SystemsF41UnclassifiedGeneralWhat This Code MeansDeration (reduced power output); Power output derationPossible Causes•Inlet air temperature exceeding 97°F•Altitude exceeding 3,200 ft•Operating altitude exceeding 3,200 ft•Inlet air temperature above 97°F•Altitude above 3,200 ftSuggested Actions1Apply power deration of 1.5% per 10°F above 97°F inlet air temperature2Apply power deration of 2.5% per 1,000 ft above 3,200 ft altitudeRelated Blue Star Power Systems Fault Codes40081U81O59(2)5951(2)514740Q3227(2)27Browse all Blue Star Power Systems fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for F41 on your specific Blue Star Power Systems unit — cited to the OEM manual, not a forum guess.TRY IT FREE