AFWFilters Brine tank overfill

Brine tank overfills with water and may overflow

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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

Stuck brine refill valve, Clogged brine line flow control, Leaking brine valve seat, Faulty safety float

How to Fix / Troubleshooting

Safety: Unplug the unit and close the inlet valve. Use caution when handling salty water.

  • Stop overflow: Place the softener in BYPASS and use a wet/dry vacuum or bucket to remove excess water from the brine tank.
  • Inspect safety float: Open the brine well and verify that the float moves freely and shuts off water when lifted. Clean any salt buildup and ensure the float rod is straight.
  • Check brine valve: Remove and inspect the brine valve assembly at the control head. Look for debris or wear on the valve seat that could prevent proper shutoff. Clean or replace as needed.
  • Inspect refill flow control: Check the brine line flow control (BLFC) for blockage or incorrect size. Replace if damaged.
  • Test refill: After reassembly, run a manual regeneration and observe the brine refill stage to ensure the water level stops at the correct height.
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Repair Difficulty

Medium 3/5

Required Part

Brine Valve Assembly & Safety Float
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