Neff Electrical Short / Earth Leakage

Microwave trips the household circuit breaker or RCD as soon as you start a cooking program.

Advertisements

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.

Advertisements

Possible Causes

Shorted high-voltage capacitor, Shorted mains filter, Damaged power cord, Internal wiring short to chassis

How to Fix / Troubleshooting

Safety: Do not repeatedly reset the breaker. Unplug the microwave immediately.

Visual checks (qualified):

  • Remove the outer cabinet and inspect the mains filter module, power cord entry, and internal wiring for burn marks or melted insulation.
  • Check the high-voltage capacitor and diode for visible damage.

Testing:

  • Use a megohmmeter or insulation tester to check for leakage between live parts and chassis.
  • Replace any shorted component (mains filter, capacitor, wiring harness) with genuine Neff parts.

Because this involves mains and high voltage, most users should have a Neff technician perform this repair.

Advertisements

Repair Difficulty

Professional Required 5/5

Required Part

Mains Filter Module
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements