Smooth glass electric cooktop built into a wooden counter

Generic photo: Max Vakhtbovych · Pexels License

Gritty or sandy residue on dishes after washing

Grit is usually redeposited soil: a clogged filter, a drain that cannot clear (air gap, disposer, hose) or detergent that did not dissolve. Hard water causes white film rather than grit. Work from the filter outward, then check the drain path and the wash motor.

Cross-checked ~30 min easyBrands: All

Before you start

Power off before reaching into the sump
Wear cut-resistant gloves: the sump can hold broken glass

Diagnostic steps

Unlock all 8 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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