Rehlko

I/OMODULECOMMUNICATIONSLOST

UnclassifiedGeneral

What This Code Means

Service Required LED flashes; Software logs the message I/O Module Communications Lost

Possible Causes

  • •Communication to an I/O module that was previously installed and working is lost

Suggested Actions

  1. 1Check the I/O module connections
  2. 2Check the diagnostic LED

Related Rehlko Fault Codes

I/OMODULELOSTCOMMI/OMODULENOTFOUNDI/OMODULECOMMSLOSTI/OMODULENOTINSTALLEDI/O MODULE NOT FOUNDINPHASE MONITOR (IPM) SYNCHINGI/O MODULE LOST COMMINTERN ERROR SHUTDWNI/O MODULE COMMUNICATIONS LOSTIPM SYNCHING (IN-PHASE MONITOR SYNCHING)HWTL WT
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Get a diagnosis walkthrough for I/OMODULECOMMUNICATIONSLOST on your specific Rehlko unit — cited to the OEM manual, not a forum guess.

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