AFWFilters Residual brine in service water

Water is salty or has a brine taste immediately after 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

Insufficient rinse time, High drain restriction, Mispositioned piston, Overfilled brine tank

How to Fix / Troubleshooting

Safety: Do not drink water that tastes strongly of salt until the issue is resolved.

  • Flush system: Run several cold water faucets for 10–15 minutes to flush residual brine from the plumbing.
  • Check drain line: Ensure the drain hose is not restricted, kinked, or elevated beyond manufacturer limits, which can reduce rinse flow.
  • Verify cycle settings: Increase the rapid rinse time in the control programming if adjustable, following AFWFilters guidelines.
  • Inspect piston and seals: If salty taste persists, inspect the control valve piston and seals for wear or misalignment that could allow brine leakage into service. Replace the piston/seal kit if needed.
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Repair Difficulty

Medium 3/5

Required Part

Control Valve Piston & Seal Kit
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