E5
Thor Kitchen Water Level Sensor / Float Switch Error

Dishwasher shows E5 and may stop shortly after starting; sometimes no water enters the tub.

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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

Stuck mechanical float, Faulty water level sensor, Wiring issue between sensor and control board, Debris in float chamber

How to Fix / Troubleshooting

Safety first: Turn off power at the breaker and shut off the water supply.

Step-by-step checks:

  • Inspect the float: Inside the tub (usually front corner), locate the plastic float. Move it up and down; it should move freely and click the switch. Clean any food or scale buildup around it.
  • Check for obstructions: Ensure no utensils or large items are blocking the float or pressing against it during operation.
  • Clean float chamber: If accessible, remove the float cover and clean the chamber with warm water to remove grease or debris.
  • Wiring inspection: Remove the toe-kick panel and inspect the wiring harness to the float switch or pressure sensor for loose connectors or damage.
  • Test cycle: Restore power and run a short cycle. If E5 persists, the level sensor or switch may be defective and require replacement.

Warning: Do not bypass the float or level sensor; this can cause flooding and severe damage.

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Repair Difficulty

Medium 3/5

Required Part

Water Level / Float Switch Assembly
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