Vaillant Over-Frequent Regeneration

Softener regenerates too often, sometimes daily, even with low water usage

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Possible Causes

Hardness set too high, Capacity set too low, Flow meter miscounting pulses, Leak in household plumbing causing constant flow

How to Fix / Troubleshooting

Safety: No hydraulic work is required for initial checks.

Steps:

  • Check programming: Verify hardness and capacity settings against actual water hardness and resin volume.
  • Check for leaks: With all taps closed, see if the display shows flow. If so, investigate for leaks or running toilets.
  • Test flow meter: Compare displayed usage with actual meter readings over a day. If the softener records much higher usage, the flow meter may be faulty and should be replaced.
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Repair Difficulty

Easy 2/5

Required Part

Inlet Flow Meter
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