Grünbeck Regeneration Scheduling / Timer Issue

Water softener does not regenerate at the programmed time

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Possible Causes

Incorrect time or day settings, Regeneration mode set to volume-only, Holiday or standby mode active, Blocked flow sensor preventing volume trigger

How to Fix / Troubleshooting

Safety: No internal live parts need to be touched for menu checks.

  • Check clock: Verify that the current time and date are correctly set in the control menu.
  • Review regeneration mode: Confirm whether the unit is set to time-controlled, volume-controlled, or a combination. Adjust according to your needs.
  • Check holiday/standby: Ensure that no holiday or standby mode is active that would suppress regeneration.
  • Test flow sensor: Run water and confirm that the controller registers flow. If not, address the flow sensor fault so that volume-based regeneration can trigger.
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Repair Difficulty

Very Easy 1/5

Required Part

Control Settings / Flow Sensor
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