Fault Codes/Rehlko/LOST COMMUNICATIONRehlkoLOST COMMUNICATIONUnclassifiedGeneralWhat This Code Means'Lost Communication' error message appearsPossible Causes•Physical loss of connection•Problem with communication settingsSuggested Actions1Check connections2Check controller settings3Check site settings in Monitor III4Refer to TT-1405 and Section 2.5.2 of the manualRelated Rehlko Fault CodesLOWLOW BATTERY VOLTSLOCKED ROTOR SDLOWBATT.LOCLOWBATTERYVOLTSLO CRANK VLT WLWLLOLWTLFMAINPWROVER L SHUTDOWNBrowse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for LOST COMMUNICATION on your specific Rehlko unit — cited to the OEM manual, not a forum guess.Your question about LOST COMMUNICATIONGET THE ANSWERFree account required — we'll bring your question with you.