Autotrol Control head external leak

Autotrol softener leaks water from the top of the control valve

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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

Damaged valve cover O-ring, Cracked valve body, Loose plumbing fittings, Leaking injector cap or brine fitting

How to Fix / Troubleshooting

Safety: Bypass the softener and relieve pressure before tightening or removing any fittings.

  • Identify leak source: Dry the area and observe where water first appears: around the valve cover, injector cap, or plumbing connections.
  • Tighten fittings: Gently tighten any loose NPT or compression fittings on the inlet, outlet, and brine connections. Do not overtighten plastic threads.
  • Replace O-rings: If water seeps from the seam between the valve cover and body, replace the valve cover O-ring using an Autotrol seal kit.
  • Inspect injector cap: Remove and inspect the injector cap and its O-ring. Replace if cracked or flattened.
  • Cracked body: If the valve body is cracked (often from freezing), the entire Autotrol control valve body may need replacement.
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Repair Difficulty

Medium 3/5

Required Part

Autotrol valve seal and O-ring kit
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