The short answer
On Frigidaire Gallery a machine that will not drain is most often a filter and sump loaded with debris, not a dead drain pump. Ranked that way because the touch control will refuse to start for reasons that have nothing to do with the wash system, so the control has to be cleared first.
What you observe
- The machine has never drained since it was installed — That points hard at the disposer plug or the hose route rather than at any part failing.
- Dirty water appears in the bottom between cycles — Siphoning back from the sink waste, which is a hose loop problem.
- NEAR MISS: water is on the floor rather than in the bottom — That is a leak, and it is a different page. Switch the machine off at the breaker before mopping.
Causes, most likely first on Frigidaire Gallery
- The filter and sump are blocked — First here, where the control sits between you and the mechanical parts underneath. Debris collects in the sump and works its way to the pump inlet, where it forms a mat that water cannot pass. It is the most common cause of standing water on almost every machine and it is entirely owner work.
- A new disposer plug, or a blocked air gap — Second, and the display will not name it for you. A dishwasher plumbed into a waste disposer will not drain at all until the knockout plug inside the disposer inlet has been removed. If the machine has never drained since it was installed, this is very likely the reason.
- The drain hose is kinked, or has lost its high loop — Third. The hose must rise before it falls, or the machine siphons and never clears.
- The drain pump or its check valve has failed — Last, and it is the reason the order above matters. You hear nothing at all from the pump, or you hear it run steadily with no water moving and no blockage anywhere in the path.
Check in this order, and why
- Lift out the filter and look at the sump and the pump inlet underneath — It is the fastest check on the list and it resolves the largest share of these faults.
- Check the disposer inlet for a knockout plug, and clear the air gap on the worktop if there is one — It is the one cause that explains a machine which has never drained rather than one that has stopped.
- Follow the drain hose from the machine to the sink and look for a kink or a dropped loop — It explains a machine that drains partly, or that refills itself with dirty water.
What an owner can safely check
- Bail the water out, twist out the filter, and clear the sump and pump inlet — Use a torch and look before you reach in: broken glass ends up here more often than anything else.
Tools: cup, sponge, torch, glovesAbout 25 min
- Clear the air gap cap and check the disposer inlet plug has been removed — The air gap unscrews by hand and is usually full of the same debris as the filter.
Tools: torchAbout 15 min
- Ease the machine out, straighten the drain hose and restore its high loop — Clip the hose up under the worktop so it cannot slip down again.
Tools: torchAbout 25 min
- STOP HERE if the next step needs a meter on live terminals — That is where an owner check ends and a service call begins.
Before you open anything
Safety
Switch the machine off at its breaker before reaching into the sump. The chopper blade under the filter is sharp, and broken glass collects in exactly the place your fingers are going, so use a torch and gloves and look first. Bail the standing water out rather than tipping the machine, and never run a cycle with the door propped open.
When to call a technician
Call when the filter, the hose, the air gap and the sink are all clear and the machine still holds water, because that puts the fault in the pump or its check valve. Call sooner if the machine trips its breaker, if you can smell burning from the pump, or if water is reaching the floor as well, and leave it switched off until then.
Nearest pages of this class
What this page does not cover
This page covers the brand and the dishwasher class, not one family or model line. Where a family-specific or model-specific page exists for your unit, that page is the more specific answer and it takes precedence over this one. Not here: part numbers, wiring colours and component locations, which differ by family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
