E18
Lindsay Excessive Drain Flow Detection

E18 displayed and unit reports high drain flow or drain leak

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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

Drain line disconnected or broken, Internal seal failure causing constant backwash, Cracked Lindsay valve body, Incorrect drain line sizing causing sensor misread

How to Fix / Troubleshooting

Safety first: Shut off water and power. Be prepared for water discharge at the drain line.

  • Inspect drain hose: Follow the entire length of the drain line. Repair any breaks or loose connections. Ensure the end is not submerged in a floor drain.
  • Check for constant flow: With the unit in service, observe the drain port. Any continuous flow indicates an internal leak.
  • Inspect valve internals: Remove the valve cover and check the main piston and seals for damage. Replace with a Lindsay seal kit if worn.
  • Check valve body: Look for cracks around the drain port or internal passages. A cracked body requires full valve replacement.
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Repair Difficulty

Hard 4/5

Required Part

Lindsay valve body
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