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Arcing

Arcing inside the microwave oven cavity

KitchenAid · Microwave Hood Combination

What does Arcing mean?

You may see sparks or flashing lights inside the microwave cavity during operation. This usually indicates a buildup of soil or food residue, or the presence of metallic objects within the oven.

Common Causes

  • Soil buildup on cavity walls or microwave inlet cover
  • Soil buildup on cooking rack supports
  • Soil buildup in the area where the door touches the frame
  • Metallic objects or dishes with metallic trim inside the oven

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Immediately stop the microwave oven and unplug it from the electrical outlet.

  2. 2

    Thoroughly clean the microwave cavity, including walls, the microwave inlet cover, and cooking rack supports.

  3. 3

    Pay special attention to cleaning the area where the door touches the frame for any food residue.

  4. 4

    Ensure no metal objects, aluminum foil, or dishes with metallic trim are inside before operating.

  5. 5

    Plug the microwave back in and attempt to use it again.

Browse all codes in this manual (12)
Verified technical data. Last updated: April 2026

Related Faults

Control Lock2 tones and padlock icon — Control Lock activatedConvection Odor/SmokeOdor and smoke during initial convection cooking cyclesCooling Fan OnFan running during cooktop usage — Microwave oven cooling
Source: KitchenAid Microwave Hood Combination
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