TL;DR
A dishwasher float switch is the overfill safeguard in the tub's floor: a small dome or cylinder rises with the water level and, at the set point, opens a microswitch that closes the fill valve. Stuck down by debris, it allows overfilling and door leaks; stuck up, it blocks filling entirely, producing a machine that hums and immediately drains.
What it means
A dishwasher float switch is the overfill safeguard in the tub's floor: a small dome or cylinder rises with the water level and, at the set point, opens a microswitch that closes the fill valve. Stuck down by debris, it allows overfilling and door leaks; stuck up, it blocks filling entirely, producing a machine that hums and immediately drains. Cleaning around the float in the tub's front corner is one of the few genuinely useful owner fixes before a service call, since food scraps and detergent sludge are the usual culprits.
Where it sits in the glossary
Dishwasher float switch is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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