LOW SALT
AFWFilters Low brine salt level warning

Display shows LOW SALT or SALT indicator and soft water capacity is reduced

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Possible Causes

Salt level below sensor, Salt bridge preventing salt from contacting water, Faulty salt level sensor (if equipped)

How to Fix / Troubleshooting

Safety: No electrical work is required for this step, but avoid lifting heavy salt bags if you have physical limitations.

  • Check salt level: Open the brine tank lid and visually inspect the salt level. Add high-purity solar or pellet salt to at least halfway up the tank.
  • Break salt bridge: If the top of the salt looks solid but there is an empty space underneath, a salt bridge has formed. Use a broom handle or similar blunt tool to gently push down and break the crust, being careful not to damage the brine well or float.
  • Verify water in brine tank: Ensure there is some water at the bottom of the tank. If completely dry, the system may not be refilling properly; check the brine valve and refill settings.
  • Sensor check (if equipped): If the indicator remains on after refilling, inspect the salt level sensor wiring and clean any salt buildup from the sensor probe. Replace the sensor if it is corroded or damaged.
  • Run regeneration: Manually start a regeneration to ensure the system draws brine correctly after correcting the salt level.
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Repair Difficulty

Very Easy 1/5

Required Part

Brine Tank Salt Level Sensor
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