I/O MODULE NOT FOUND

UnclassifiedGeneral

What This Code Means

Service Required LED flashes; System does not detect I/O module at expected address

Possible Causes

  • •Number of installed I/O modules does not match setup program
  • •I/O module address DIP switches set incorrectly
  • •I/O modules not connected
  • •I/O module not receiving power or communicating with controller

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 and the address DIP switches are set correctly
  3. 3Check 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/O MODULE NOT FOUND on your specific Rehlko unit — cited to the OEM manual, not a forum guess.

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