Over-the-range microwave mounted above a stainless electric range

Generic photo: Curtis Adams · Pexels License

Over-the-range microwave filters: grease filter cleaning, charcoal filter replacement and the Reset Filter light

OTR microwaves have metal grease filters underneath (washable) and, when set to recirculate, a charcoal filter behind the top grille (not washable). Whirlpool says to clean the grease filters about monthly and replace charcoal about every 6 months; GE gives 6 to 12 months for charcoal. GE's Reset Filter light is only a timer (about every 6 months): it does not sense a dirty filter and is cleared by holding Reset Filter for about 3 seconds.

Cross-checked ~15 min easyBrands: All

Before you start

Let the cooktop and microwave cool before pulling filters; grease filters can be hot right after cooking
Turn the vent fan off before removing filters
Do not run the vent without grease filters in place; grease reaches the blower and charcoal

Diagnostic steps

Unlock all 5 steps with expected values

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5 steps ~30 minadvanced