Cillit Over‑Regeneration / Incorrect Capacity Setting

Softener regenerates too often, causing excessive salt and water consumption

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Possible Causes

Hardness set too high in Cillit controller, Resin capacity set too low, Flow meter mis‑calibrated, Internal leak causing phantom usage

How to Fix / Troubleshooting

Safety: No hydraulic disassembly is required for basic adjustments.

  • Check hardness setting: Test raw water hardness with a Cillit test kit and compare to the value programmed in the controller. Adjust to the correct value.
  • Verify capacity: Ensure the resin volume and capacity settings match the actual Cillit softener model and resin load.
  • Monitor usage: Compare the controller’s recorded daily usage to your actual consumption. If the meter shows much higher usage, inspect for leaks or a faulty flow meter.
  • Adjust reserve and safety factors: Reduce overly conservative reserve capacity or safety factors in the programming, within Cillit’s recommended limits.
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Repair Difficulty

Easy 2/5

Required Part

Cillit control programming (no hardware part)
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