F3
V-ZUG Heating Time-Out / Water Not Reaching Temperature

Dishwasher shows F3 and stops mid-cycle, often with water in 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

Heating element weak or failed, NTC sensor misreading temperature, Limescale on heater reducing efficiency, Control board heater relay fault

How to Fix / Troubleshooting

Safety first: Disconnect power before any internal inspection.

  • Confirm symptom: Run a hot program and check if the interior feels warm after 20–30 minutes. If not, heating is not working correctly.
  • Descale: Run a descaling cycle with a suitable product to remove limescale from the heater and temperature sensor.
  • Check water supply temperature: If connected to hot water, ensure the supply is actually hot; lukewarm supply can cause extended heating times.
  • Persistent F3: The heater, NTC, or control board likely needs testing and replacement by a V-ZUG technician.
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Repair Difficulty

Hard 4/5

Required Part

Heating Element / NTC Sensor
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