Err br
Autotrol Brine system malfunction detected by control

Display shows “Err br” or “Brine Err” and unit aborts regeneration during brine fill or draw

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Possible Causes

Blocked brine line, Stuck brine float, Clogged injector, Air leak in brine fittings

How to Fix / Troubleshooting

Safety: Bypass the softener and relieve pressure before opening brine connections.

  • Inspect brine tank: Check that the float assembly moves freely and is not encrusted with salt. Clean or replace the brine float assembly if sticking.
  • Check brine line: Remove the brine line from both ends and flush with water. Replace if kinked or brittle.
  • Clean injector and screen: Remove and clean the injector/nozzle-venturi and screen to restore proper suction.
  • Check for air leaks: Ensure all brine fittings are tight and sealed. Air leaks can prevent brine draw and trigger errors.
  • Test regeneration: After reassembly, run a manual regeneration and observe brine movement. Confirm the error does not return.
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Repair Difficulty

Easy 2/5

Required Part

Autotrol brine float assembly
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