If your Haier microwave is sparking inside, stop using it immediately. This is usually caused by metal inside the oven, burnt food residue, or a damaged waveguide cover (mica plate). Check that there’s no foil, metal trim, or twist ties inside, clean any grease or carbon buildup, and inspect the small mica cover on the inside wall — if it’s burnt or cracked, it must be replaced. If sparks continue after cleaning and removing metal, the microwave needs professional repair or replacement. For safety and part location details, see the Haier user manual here:
https://manualslibraryy.com/haier-qvm7167bnts-smart-over-the-range-microwave-oven-manual/
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December 2025
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