I/OMODULENOTFOUND

UnclassifiedGeneral

What This Code Means

Service Required LED flashes; Software logs the message I/OModuleNotFound

Possible Causes

  • •System does not detect an I/O module at an expected address

Suggested Actions

  1. 1Check that the number of I/O modules installed matches the number expected by the setup program
  2. 2Check that the I/O modules are connected
  3. 3Check that the address DIP switches are set correctly
  4. 4Check the diagnostic LED to verify that the module is receiving power and communicating with the controller

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for I/OMODULENOTFOUND on your specific Rehlko unit — cited to the OEM manual, not a forum guess.

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