Gaggenau Start circuit / safety interlock issue

Dryer powers on but will not start when Start button is pressed; no error code.

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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

Faulty Start button, Defective door switch, Child lock function active, Failed main control relay

How to Fix / Troubleshooting

Safety first: Unplug the dryer before accessing controls.

  • Check child lock: Refer to the user manual to see if a key symbol or lock icon is lit. Disable the child lock using the specified button combination.
  • Confirm door closure: Ensure the door is fully closed and latched. Listen for a click from the door switch.
  • Test Start button: Access the control panel and test the Start button with a multimeter for continuity when pressed. Replace the user interface board if the switch is faulty.
  • Door switch test: Test the door switch for proper operation. Replace if it does not change state when the door is opened/closed.
  • Main control relay: If switches are good, the main control's start relay may be defective and require board replacement.
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Repair Difficulty

Medium 3/5

Required Part

User Interface Board
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