Cillit Clock / Time Setting Issue

Softener regenerates at the wrong time of day (e.g., midday instead of night)

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Possible Causes

Incorrect time or regeneration time set, Daylight saving not adjusted, Backup battery weak, Wrong time zone/day setting

How to Fix / Troubleshooting

Safety: No special safety concerns; this is a programming issue.

  • Set correct time: Adjust the current time and day on the Cillit controller.
  • Set regeneration time: Program regeneration to occur at a low‑usage time (e.g., 2:00 AM).
  • Check backup battery: If time is lost during power cuts, replace the Cillit control board backup battery.
  • Verify mode: Ensure the unit is not set to immediate regeneration mode if you want delayed regeneration.
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Repair Difficulty

Very Easy 1/5

Required Part

Cillit control board backup battery
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