Start here
Water left in the bottom of a dishwasher is a blockage far more often than a failed pump. On a Frigidaire / Professional dishwasher the ranking below follows from the fact that this is a pro styled build: heavier doors and heavier trim over the mainstream platform underneath. The filter and the drain hose account for most of these calls and both are owner work.
What you actually observe
- Standing water in the sump at the end of every cycle — The machine has tried to drain and could not, which points at the path rather than at the command.
- 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: the machine is dead and never ran a cycle at all — That is a supply or door fault and it belongs on the page for a machine that will not start.
The causes, most likely first on this brand
- A blocked filter, drain hose or waste connection — This is the whole fault most of the time: the filter, the hose loop, the spigot on the waste, or a disposer knockout that was never removed at installation. Ranked first 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.
- Plates loaded into the machine unscraped — Everything scraped off the plates ends up at the filter, and a machine used that way blocks again within weeks of being cleared. Ranked second on a Frigidaire / Professional dishwasher: a pro styled machine invites heavier loading than it was built for, and that alone produces most of these complaints.
- A drain pump jammed by glass, a stone or a label — The impeller is small and stops dead on anything solid, and a pump that cannot turn sounds exactly like one that has failed. Ranked third on a Frigidaire / Professional dishwasher: motors on this platform are sized for the standard duty cycle, and pro styling does not change that.
- A cycle that is being interrupted before it drains — Opening the door near the end, or a power interruption, leaves water in the sump with nothing wrong at all. Ranked fourth on a Frigidaire / Professional dishwasher: the control is the same board as the plain model and it is no more likely to fail, so it comes after the mechanical causes.
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.
- Lift the filter and look at what is underneath it — Most of these faults are visible at this point and go no further.
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
- Bail the standing water out, then remove and clean the filter and sump — A jug and a sponge clear it. Wear gloves, because broken glass in the sump is common.
Tools: jug, sponge, glovesAbout 20 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
Switch the machine off at its breaker or its isolating switch before putting a hand into the sump: the pump can start without warning and there is usually broken glass down there. Wear gloves. Let the machine cool first, because the water sitting in the sump after a cycle is hot enough to scald.
When to call a technician
Call once the filter, the hose and the waste connection are all clear and water still stands in the sump, because the next step is the pump or the control and it means the machine coming out. Call sooner if water is escaping onto the floor or under the units, and switch the machine off at the breaker while you wait.
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. Pump fitments, filter shapes, hose routing and waste connections 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.
