Monarch Brine Tank Flooding / No Brine Draw

Brine tank full of water and not draining during 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

Blocked brine line or injector, Stuck brine safety float in closed position, Air leak in brine line fittings, Incorrect brine line connection

How to Fix / Troubleshooting

Safety first: Disconnect power and be prepared for water spillage when working on the brine tank.

  • Lower water level: Manually remove excess water from the brine tank with a jug or wet vacuum to below the safety float level.
  • Check safety float: Remove the brine well cover and ensure the float moves freely. Clean any salt sludge and verify the float drops fully when water level is low.
  • Inspect brine line: Remove the brine line from both the valve and the brine well. Blow through to confirm it is clear. Replace if blocked.
  • Clean injector: Remove and clean the venturi injector and associated screens in the Monarch valve.
  • Reassemble and test: Refit all components, restore power and water, and run a manual regeneration while observing brine draw.
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Repair Difficulty

Medium 3/5

Required Part

Brine Safety Float Assembly
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