Chemical Controllers source checklist

Hayward CAT controller troubleshooting checklist

Chemical controllers are high callback risk when the screen reading, manual test, probe age, calibration state, and feed equipment do not agree.

Proof to capture

1. controller screen2. manual water test3. probe age and calibration date4. flow cell condition5. feed pump/tank/tablet level6. injection fitting and tube condition

Field checks

  1. Do not dose from a controller reading that disagrees with manual testing.
  2. Confirm calibration standards and probe age.
  3. Verify flow through the sample cell.
Reference only. Verify current manuals, model numbers, dimensions, and qualified service boundaries before ordering parts or making repair decisions.
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