Fault Codes/Rehlko/SYSTEM READYRehlkoSYSTEM READYUnclassifiedGeneralWhat This Code MeansSystem readyPossible Causes•SYS RDY (System Ready)Related Rehlko Fault CodesTIMER ERROR NOTICETOTAL POWER HIGH SHTDWN SDSRCN(ORSRCE)ROTATIONERRTOTAL POWER HIGH SHUTDWNSRC N (OR SRC E) ROTATION ERRUNDER FREQUENCYSPEED SENSOR FAULT SDUNITFAILEDTOREPORTHEARTBEATSPD SENS FLT ARUSSOURCEROTATIONERRORUU----Browse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for SYSTEM READY on your specific Rehlko unit — cited to the OEM manual, not a forum guess.Your question about SYSTEM READYGET THE ANSWERFree account required — we'll bring your question with you.