Grünbeck Blocked Outlet / Internal Valve Blockage

No water at taps when the softener is in service mode, but water flows in bypass

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Resin bed compaction, Blocked outlet channel in valve head, Closed outlet shutoff valve, Collapsed riser tube screen

How to Fix / Troubleshooting

Safety: Switch to bypass to restore temporary water supply. Disconnect power and close inlet before opening the unit.

  • Check external valves: Confirm that the outlet shutoff valve is fully open and that any downstream filters are not blocked.
  • Inspect valve head: Remove the valve head according to the manual and inspect the outlet channel for resin beads or debris. Clean thoroughly.
  • Check riser tube and screen: Inspect the central riser tube and bottom screen in the resin tank for collapse or blockage. Replace damaged components.
  • Resin bed: If the resin bed is severely compacted, it may need to be loosened or replaced by a technician.
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Repair Difficulty

Hard 4/5

Required Part

Outlet Channel, Riser Tube, and Bottom Screen
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