Hellenbrand
Continuous Drain Flow / Internal Valve Leak
Water continuously flows to drain even when the softener is not in regeneration.
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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
Damaged rotor or piston seals, Debris lodged in valve seats, Cracked valve body, Mispositioned drain line flow control
How to Fix / Troubleshooting
Safety first: Immediately place the softener in bypass to stop unnecessary water loss. Do not cap the drain line while pressure is present.
- Verify valve position: Confirm the control display shows the unit in Service, not in a regen step.
- Inspect drain line flow control (DLFC): Remove the DLFC fitting and check for debris holding it open. Clean and reinstall.
- Disassemble valve internals: With the unit depressurized, remove the rotor/piston and seal pack. Look for cuts, deformation, or debris on seals and seats.
- Replace seals and rotor: Install a Hellenbrand rotor and seal kit appropriate for your valve model. Lubricate with silicone grease only.
- Check valve body: Inspect for cracks or erosion around the drain port. Replace the valve body if damaged.
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Repair Difficulty
Hard
4/5
Required Part
Control Valve Rotor and Seal Kit
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