E17
Neff Mains Voltage / Power Supply Fault

Dryer displays E17; may be associated with incorrect or unstable mains voltage detection.

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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

Supply voltage out of range, Loose mains connection at terminal block, Faulty power supply section on control board

How to Fix / Troubleshooting

Safety first: Turn off power at the breaker and verify with a tester before opening the terminal cover.

Check supply:

  • Have a qualified person measure the mains voltage at the outlet; ensure it matches the dryer rating (e.g., 220–240 V).
  • Inspect the mains cable and plug for damage.

Terminal block:

  • Open the rear terminal cover and check that all screws are tight and there are no signs of overheating.

If the supply is correct and connections are sound but E17 persists, the internal power supply on the main PCB may be faulty and the board should be replaced by a professional.

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Repair Difficulty

Professional Required 5/5

Required Part

Main Control Board (Power Supply Section)
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