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The Brain

An irrigation tech knowledge base, by BoardTronics.

Topics include troubleshooting, how-to's, and more!

ISSUE:

Timing Mechanism showing "size 1" or "size 0" error

If the Timing Mechanism ("Facepack") is showing a "Size 1" error or a "Size 0" error, it usually means that the Timing Mechanism is not receiving feedback from the TRIAC Boards. Follow these steps to troubleshoot the issue:

  • Check the loop-back connector and ensure that it is plugged into the last TRIAC Board.
  • Check for corrosion and/or damage at each TRIAC Board connection. If corrosion and/or damage is present on one or more TRIAC Boards, we recommend replacing them with new ones.
  • Swap the Power Supply Board with a known operational Power Supply Board from another satellite location.
  • If the problem goes away, the original Power Supply Board should be repaired or replaced with a new one.
  • If problem persists, at least one of the TRIAC Boards is malfunctioning. One at a time, swap each TRIAC Board with a known operational TRIAC Board from another satellite location, allowing you to single out which TRIAC Board(s) prompts the error. Any TRIAC Boards that are found to cause the error should be replaced.