Arcing or Sparking – Metal rack

Arcing or Sparking – Metal rack issue

Cause and Symptoms

• Did the microwave oven come with a metal rack?

Try this

If the unit came with a metal rack, be certain that the rack is installed properly on all four of the plastic support brackets in the case of over-the-range models.

If not, sparking can occur. The brackets are made out of plastic to prevent this from happening, but if not installed properly and the rack touches the inside wall, sparking will occur and risk damaging the unit.

As for countertop type models, if a metal rack was provided, make sure all plastic feet are all in place and rack is positioned upright dead center on the glass tray so the rack doesn’t come in contact with back and side metal panels as well as cavity floor. If not, arcing risk occurring and eminent permanent damage to microwave oven will ensue.