Technivorm Moccamaster Stuck Switch Contacts or Shorted Control Circuit

Unit continues to heat or brew after being switched off

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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

On/off rocker switch contacts welded closed, Miswired switch bypassing off position, Shorted wiring bridging switch terminals, Faulty electronic timer/control (on models with auto-off)

How to Fix / Troubleshooting

Safety: Unplug the unit immediately. Do not rely on the switch to turn it off.

  • External test: With the unit unplugged, toggle the switch and feel for a positive click. A mushy or stuck feel suggests internal damage.
  • Internal inspection:
    • Remove the base.
    • Inspect the on/off switch for signs of overheating or melting.
    • Verify wiring matches the original configuration and that no wires are bypassing the switch.
  • Replace switch or control: Install a new rocker switch or control module as appropriate.
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Repair Difficulty

Hard 4/5

Required Part

On/Off Rocker Switch
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