E11
Kobold Internal Leak / Leak Sensor Triggered

E11 displayed, solution leaks detected internally, unit may shut down

Advertisements

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.

Advertisements

Possible Causes

Cracked solution hose, Loose hose clamp at pump or nozzle manifold, Damaged solution tank seal, Activated internal leak sensor pad

How to Fix / Troubleshooting

Safety: Unplug the unit immediately and remove both tanks. Do not continue using a leaking appliance.

  • Inspect for visible leaks: Check around the base, pump area, and under the tanks for signs of water or detergent.
  • Check hoses and clamps: Open the housing to access the solution lines. Look for splits, pinholes, or loose clamps at the pump outlet and nozzle manifold. Tighten clamps and replace any damaged hoses with Kobold-approved tubing.
  • Tank seals: Inspect the solution tank outlet seal and O-rings. Replace if cracked, flattened, or missing.
  • Leak sensor pad: Some models use an absorbent pad or electronic sensor in the base. If soaked, dry or replace the pad and ensure the sensor contacts are clean.

After repairs, fully dry the interior before reassembly. If E11 returns with no visible leaks, the leak sensor or PCB input may be faulty.

Advertisements

Repair Difficulty

Hard 4/5

Required Part

Solution Hose Kit
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements