Aquasana Valve Stuck in Backwash or Brine Rinse

Aquasana softener continuously drains water to the drain line even when not regenerating

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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

Debris lodged in Aquasana control valve, Damaged rotor/seal pack, Misaligned cam or motor failure mid-cycle, Control board locked in regeneration mode

How to Fix / Troubleshooting

Safety first: Immediately place the softener in BYPASS to stop water waste. Unplug the power adapter.

Steps to stop continuous drain:

  • 1. Power reset: With the unit in BYPASS, plug it back in and allow the control to attempt to return to service position. If drain flow stops, monitor for recurrence.
  • 2. Inspect valve internals: If drain continues, remove the control head cover and inspect the drive motor and cam. Ensure the cam is in the service position and not jammed.
  • 3. Check for debris: Shut off water, relieve pressure, and remove the control head from the Aquasana resin tank (follow manual). Inspect the rotor/seal pack and internal passages for resin beads or debris.
  • 4. Replace rotor/seal pack: If seals are worn or damaged, install a new rotor and seal kit specific to your Aquasana valve.
  • 5. If problem persists: The entire control valve head may need replacement by a technician.
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Repair Difficulty

Professional Required 5/5

Required Part

Control Valve Rotor and Seal Pack
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