All controller inputs read 999.9 volts and controller error log shows error number 0x00002809.

Issue

All inputs on an i2920 controller read 999.9 even when all input connections are removed.

Product Line

Andover Continuum

Environment

  • Inputs
  • 0x00002809
  • 999.9

Cause

The 0x00002809 error is logged by the Analog to Digital conversion process when the V Zero is greater than the V Reference.  This would indicate a controller calibration failure or a controller hardware failure.

Resolution

The controller should be returned for repair.