Fault Codes/Rehlko/A-336415-ARehlkoA-336415-AUnclassifiedElectricalWhat This Code MeansOvervoltage faultPossible Causes•Overvoltage adjustment potentiometer (R41 or R42)Suggested Actions1Adjust overvoltage adjustment potentiometer (R41 or R42)2Observe LED4 (red) for overvoltage shutdown adjustment on the main circuit boardRelated Rehlko Fault CodesAC SENS LOSSADC-RES516370 3AGS-10516369 31BATTERY CRLO516369 11BATTERY HIGH516369 6BATTERY VOLTAGE HIGH W516369 5BATTERY VOLTAGE LOW WBrowse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for A-336415-A on your specific Rehlko unit — cited to the OEM manual, not a forum guess.TRY IT FREE