Melitta No Brew Start / User Interface or Safety Interlock Issue

Machine powers on but will not start brewing when the coffee button is pressed.

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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

Brew group not detected, Drip tray or door not closed, Faulty start button on control panel, Internal safety interlock active

How to Fix / Troubleshooting

Safety first: Ensure the machine is on a stable surface and unplug before physical checks.

Steps:

  • Check messages: Look at the display for any prompts (insert tray, insert brew unit, fill water, etc.) and resolve them first.
  • Verify closures: Ensure the service door, bean hopper lid, and water tank are fully closed and seated.
  • Test buttons: Try other buttons (menu, rinse) to see if the control panel responds. If some buttons work and the brew button does not, the keypad may be faulty.
  • Power reset: Unplug for 5 minutes, then reconnect and try again.

If the machine remains unresponsive to brew commands, the user interface PCB or main board may require replacement.

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Repair Difficulty

Medium 3/5

Required Part

Control Panel Keypad
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