Paradise ApplianceAugust 4, 2026 · Dishwasher Repair
You run a cycle, open the door, and find a pool of water sitting in the bottom of the dishwasher. It is one of the more common kitchen repair calls we get across Los Angeles and Orange County, and the good news is that many cases come down to a clog you can clear yourself. Here is how to sort out the simple fixes from the ones that need a technician.
First, one useful bit of context. A small amount of water in the filter area at the bottom of the tub is normal. KitchenAid designs it that way to keep the seals from drying out, and it gets flushed out on the next cycle. What is not normal is water covering the bottom of the tub or sitting noticeably higher than the filter. That points to a drainage problem worth chasing down.
Paradise Appliance Service is the exclusive Whirlpool Factory Certified Care provider in Los Angeles and Orange County, which means our technicians are factory trained and authorized to repair KitchenAid dishwashers with genuine parts. KitchenAid dishwasher drain and pump repairs are a regular part of our week.
Start With the Simple Stuff
Before pulling anything apart, rule out the quick explanations. Confirm the cycle actually finished and was not paused or interrupted, since a stopped cycle can leave water behind. If your model has a Cancel or Drain option, run it and see whether the water clears. And if the problem started right after a new garbage disposal was installed, jump straight to the disposal check below, because that is the single most common cause of a sudden no-drain.
Safety first. Before you inspect the filter, hoses, or anything under the sink, turn off power to the dishwasher at the circuit breaker and shut off the water at the under-sink valve. Lay down a towel and scoop out the standing water so you can see what you are doing.
Homeowner Checks
Clean the filter. On most KitchenAid dishwashers the filter sits at the bottom of the tub under the lower spray arm. Pull out the lower rack, then twist the cylindrical filter counterclockwise to release it and lift it out by hand. No tools needed on the main filter. Rinse it under hot water, clear any food, grease, glass, or grit, and check the opening underneath for debris before you reinstall it. On some models there is a lower screen or sump cover under the filter that can also collect buildup.
Check the garbage disposal and the knockout plug. If your dishwasher drains into a garbage disposal, run the disposal to clear any food caught at the inlet. If a new disposal was recently installed, make sure the installer removed the knockout plug inside the disposal’s dishwasher inlet. If that plug is still in place, the dishwasher physically cannot drain into it. This is a very common cause of a brand new install that will not drain.
Inspect the drain hose. The hose runs from the back of the dishwasher to the disposal or the sink drain. Look for kinks, crushing, or sharp bends, and straighten anything you find. The hose also needs a proper high loop, routed up near the top of the cabinet or under the countertop before it drops to the drain, or a working air gap on the sink. Without that loop, water can siphon back into the tub and leave standing water. If the hose looks clear but you suspect a clog inside it, it can be detached and flushed, though that step is often easier for a technician.
Clean the air gap, if you have one. That small chrome cylinder on the sink or countertop lets air in so the dishwasher can drain without forming a vacuum. Pop off the cap, clear any food or mineral buildup inside, and rinse it out. Mineral scale is worth a look here given how hard the water runs in much of Southern California.
Once you have cleared these, restore power and water and run a short cycle to see whether it drains.
When to Call a Professional
If the filter, disposal, hose, and air gap all check out and water is still sitting in the tub, the problem is usually deeper in the system. These parts involve electrical testing or components that should be diagnosed with the right tools.
The drain pump is the most likely culprit at this stage. It uses an impeller to push water out through the hose, and a failed motor or a broken impeller will leave the tub full. Drain pumps are replaced rather than repaired. Beyond that, a faulty control board may not be sending power to the pump, a stuck check valve can let water flow back in, and a failed drain solenoid or valve can keep the drain from opening. Sorting out which one it is takes a meter and some disassembly.
This is where an authorized repair pays off. As the Whirlpool Factory Certified provider for the region, Paradise carries manufacturer training and genuine KitchenAid parts, and our trucks are stocked to handle most of these repairs on the first visit. Using non-authorized parts can also affect your warranty, so it is worth having it done right.
Keeping It From Happening Again
A little maintenance prevents most drainage headaches. Rinse the filter every week or two depending on how much you run it, scrape heavy food off plates before loading, and periodically run a dishwasher cleaner to clear grease and scale from the pump and hoses. In hard water areas, that last step matters more than most people expect.
Bottom Line
When your KitchenAid dishwasher will not drain, start simple: confirm the cycle finished, clean the filter, run and check the garbage disposal, remove the knockout plug if the disposal is new, and inspect the drain hose and air gap. If water is still standing after all of that, the drain pump, control board, or a valve is the likely cause, and that is a job for a technician.
Serving all of Los Angeles and Orange County with same-day and next-day appointments, Paradise Appliance Service is ready to help. Schedule service online or call us at (323) 284-6780, and you can see our full coverage area here.
For KitchenAid’s own reference guide, see how to unclog a dishwasher.
