Fault Codes/Rehlko/AUX INPUT SHUTDWNRehlkoAUX INPUT SHUTDWNUnclassifiedGeneralWhat This Code MeansAuxiliary input faultRelated Rehlko Fault CodesAUX INPUT WARNINGBATTERYCHARGER FAULTAUXBATTERYCHARGERFAULTAUTO RECOVERYCHKNGMETERATS EXERCISE NOT SCHEDULEDCOMMON FAULT SHUTDWNALOPCOMMON WARNGAL.UCONCHECKINGBrowse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for AUX INPUT SHUTDWN on your specific Rehlko unit — cited to the OEM manual, not a forum guess.Your question about AUX INPUT SHUTDWNGET THE ANSWERFree account required — we'll bring your question with you.