Fault Codes/Rehlko/OVERVOLTAGEL1--L2RehlkoOVERVOLTAGEL1--L2UnclassifiedElectricalWhat This Code MeansOVERVOLTAGEL1--L2Possible Causes•Source voltage across L1 and L2 is above the overvoltage dropout settingRelated Rehlko Fault CodesOVERVOLTAGEL2--L3OVERVOLTAGEL3--L1OVERTEMP FAULTREACTIVE POWER LOWOUREAL POWER HIGHLVREAL POWER LOWLRCREPLACE CLOCK BATTERYLOWBATTERYVOLTAGERY CRLO WARNING WBrowse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for OVERVOLTAGEL1--L2 on your specific Rehlko unit — cited to the OEM manual, not a forum guess.Your question about OVERVOLTAGEL1--L2GET THE ANSWERFree account required — we'll bring your question with you.