The short answer first
Most dishwasher leaks are a door seal or a hose connection rather than a split tub, and where the water shows tells you which. On a Frigidaire / Professional dishwasher the ranking below reflects that this is a pro styled build: heavier doors and heavier trim over the mainstream platform underneath. Shut the machine off at the breaker before you start mopping under it.
What you actually observe
- Water at the front, under the door, during the wash — That is the door seal or the door alignment, and it is the commonest leak on any dishwasher.
- The machine is run harder than a household one and the fault followed a busy spell — A pro styled machine invites heavier use than it was specified for, and that is usually what brings these faults forward.
- NEAR MISS: water on the floor only after a cycle ends — That is often the waste connection under the sink rather than the machine at all.
The causes, most likely first on this brand
- A door gasket that has hardened, or a door out of alignment — The seal runs the whole way round and only has to fail at one point. A heavy door or a dropped hinge opens a gap at the top corner first. Ranked first on a Frigidaire / Professional dishwasher: the heavier pro door and its handle load the hinge far harder than the standard door does, and a sagging hinge is what stops the seal closing.
- The fill hose, the inlet valve or the connection under the sink — These are under mains pressure whenever the tap is open, so a weeping joint here puts far more water out than a tub leak. Ranked second on a Frigidaire / Professional dishwasher: the fill and filter hardware here is the mainstream part under a heavier trim, and it is the part that meters everything the machine does.
- A drain hose clamp or the waste spigot — A clamp that has slackened drips only while the pump runs, which is why the puddle appears and then stops. Ranked third on a Frigidaire / Professional dishwasher: this machine is run more often than a household one, so the drain path sees more of everything that blocks it.
Check in this order, and why this order
- Close the door firmly and check the latch makes cleanly — The door hardware is the part this build loads hardest, so it is proved first rather than assumed.
- Note exactly where the water first appears, and when — Front and during the wash is the door; back or after the drain is a hose.
What an owner can safely check
- Clean the latch, the strike plate and the seal fold all the way round — A single trapped item at the latch will do this repeatedly and leave no other trace.
Tools: cloth, torchAbout 15 min
- Clean the door gasket and check it for hard spots and splits — Warm soapy water restores a gasket that has only gone stiff. Look closely at the top corners.
Tools: cloth, mild detergentAbout 15 min
- STOP HERE if the next step needs a meter on live terminals or a sealed panel off — That is the line where an owner check ends and a service call begins.
Before you open anything
Safety
Water on the floor beside a powered appliance is the real hazard here, so switch the machine off at its breaker or isolating switch before mopping under it or pulling it out. Shut off the supply tap before touching any fitting. Let the machine cool before opening the door, because the water inside after a cycle is hot enough to scald.
When to call a technician
Call once the seal, the level and the visible connections are all sound and water still appears, because what is left is inside the machine behind the kick panel. Call at once if the water is reaching an outlet, a cable or the floor covering, or if it runs under kitchen units where you cannot see it, and leave the supply shut off until then.
Nearest pages of this class
What this page does not cover
This page covers the Frigidaire / Professional dishwasher as a class rather than one family or model line. Door seal profiles, hose routing, pump seals and panel fixings differ from build to build and are deliberately not here. Where a family or model page exists for your machine, it is the more specific answer and the one to read first.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
