Neff User Interface / Control Lock Issue

Washer-dryer powers on but will not start any program; start button unresponsive

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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

Child lock (key lock) activated, Faulty start/pause button, Defective user interface PCB, Communication fault between UI and main board

How to Fix / Troubleshooting

Safety first: Unplug the appliance before removing the control panel.

Step-by-step checks:

  • 1. Check for child lock: Look for a key symbol on the display. To deactivate, press and hold the designated button combination (often two buttons marked with a key) for several seconds as per the user manual.
  • 2. Try different programs: Select another cycle and press start to rule out a specific program issue.
  • 3. Inspect control panel: Remove the top and front fascia to access the user interface board. Check for loose connectors or signs of moisture damage.
  • 4. Test start button: Use a multimeter to check the start button contacts for continuity when pressed. Replace the UI board if the switch is faulty or the board is damaged.

When to call a technician: If UI replacement does not resolve the issue, the main control board or communication bus may be faulty.

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Repair Difficulty

Medium 3/5

Required Part

User Interface PCB
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