Fault Codes/Rehlko/31Rehlko31UnclassifiedGeneralWhat This Code MeansRAM ErrorPossible Causes•Controller faultRelated Rehlko Fault Codes333430352935A283627382639Browse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 31 on your specific Rehlko unit — cited to the OEM manual, not a forum guess.Your question about 31GET THE ANSWERFree account required — we'll bring your question with you.