Fault Codes/Rehlko/3 SRC SYSTEM DISABLERehlko3 SRC SYSTEM DISABLEUnclassifiedGeneralWhat This Code Means3 Source System Disable activePossible Causes•A 3 Source System Disable input signal is activeSuggested Actions1See Section 4.1.3Related Rehlko Fault Codes3SRCSYSTEMDISABLE120X000126—1—27282930313334Browse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 3 SRC SYSTEM DISABLE on your specific Rehlko unit — cited to the OEM manual, not a forum guess.Your question about 3 SRC SYSTEM DISABLEGET THE ANSWERFree account required — we'll bring your question with you.