What is the thing at the bottom of my dishwasher?
In a Whirlpool dishwasher like model WDTA50SAKW0, the “thing” you see at the bottom is usually part of the wash system: the filter area and sump cover, and sometimes the lower spray arm base. Some models also have a heating element near the bottom that helps dry and boost water temperature.
What you are most likely seeing
Common bottom-of-tub parts and what they do:
- Filter and screen area: catches food particles so they do not recirculate
- Sump cover: protects the pump inlet and directs water flow
- Lower spray arm hub: feeds the lower spray arm so it can spin and spray
- Heating element (on many dishwashers): helps with drying and water heating
- Float or water level device (varies by design): helps prevent overfilling
If your dishes are not getting clean, a clogged filter area or a spray arm issue is more common than a failed heater.
Quick checks you can do safely
Turn off power at the breaker before reaching into the sump area.
- Remove the lower rack and look for standing water or heavy debris
- Twist out and rinse the filter (if your design uses a removable filter)
- Check the lower spray arm for clogged holes and free movement
- Look for broken glass, labels, or bones around the sump cover
- Run hot water at the sink for 30 seconds before starting a cycle
When a part replacement makes sense
If the lower spray arm is cracked, warped, or not spinning, replacement is a direct fix. For WDTA50SAKW0, the matching part is the dishwasher spray arm, lower W11579565.
| Symptom | Most likely bottom-area cause | What to do |
|---|---|---|
| Poor cleaning on bottom rack | Clogged spray arm holes or filter area | Clean spray arm and filter area |
| Grinding or rattling | Debris in sump area | Remove debris, inspect for damage |
| Won’t fill or fills slowly | Water supply issue or inlet valve problem | Check supply, then test fill components |
Why it matters
The bottom assembly is where water is filtered, pumped, and routed to the spray arms. Keeping that area clear helps prevent poor cleaning, drain problems, and noisy operation.
For start-up or control-related issues that can look like “nothing is happening,” we use the same reset steps covered in how to reset a Whirlpool dishwasher.
Last updated: February 2026
Can I replace dishwasher parts myself?
Yes, many Whirlpool WDTA50SAKW0 dishwasher parts are DIY-replaceable if you’re comfortable turning off power and water, pulling the unit safely, and reassembling without leaks. Simple swaps (like racks and some seals) are usually easier than electrical or pump repairs.
What you can usually replace yourself
These repairs are commonly DIY-friendly with basic hand tools:
- Racks and rack-related hardware (fit and function issues)
- Door sealing parts for minor leaks (inspect for tears, flattening, or gaps)
- Drain hose if it’s split, kinked, or leaking
- Lower spray arm if it’s cracked or clogged beyond cleaning
- Latch assembly if the door won’t click shut or the dishwasher won’t start
Helpful model-matched examples include the dishwasher dishrack, lower W10728159, dishwasher door seal W11664713, and hose-drain,e W11414944.
Repairs that are better for experienced DIYers
These involve water supply connections, wiring, or internal components where a small mistake can cause leaks or no-start issues:
- Water inlet and fill components (shutoff valve, inlet line, leak checks)
- Pump and sump-related repairs (more disassembly, more seals)
- Control and console components (wiring harnesses, connectors)
If your WDTA50SAKW0 is not filling or overfilling, parts like the fill valve assembly W11434044 or water inlet W11535094 may be involved, but we recommend careful leak testing after any water-side repair.
Quick safety checklist before you start
- Turn off power at the breaker (dishwashers are often hardwired)
- Shut off the water supply under the sink
- Protect the floor; keep towels ready for residual water
- Take photos of wire and hose routing before disconnecting anything
- Run a short cycle after reassembly and check for leaks at every connection
DIY difficulty guide (typical)
| Repair type | Typical difficulty | Common risk |
|---|---|---|
| Rack or spray arm | Easy | Fitment, stripped fasteners |
| Door seal or tub gasket | Medium | Persistent leaks if mis-seated |
| Drain hose | Medium | Leaks, poor draining if kinked |
| Fill valve or water inlet | Medium to hard | Leaks at fittings, no-fill |
| Pump/sump or control | Hard | Miswiring, sealing issues |
Why it matters
Choosing the right DIY level helps you avoid repeat leaks, no-start problems, and wasted parts. Starting with the simplest likely cause (like a latch, hose, or seal) often restores normal operation faster.
For troubleshooting steps tied to symptoms and flashing lights, use how to reset a Whirlpool dishwasher and Whirlpool dishwasher error codes.
Last updated: February 2026
How to replace the bottom door seal on a Whirlpool dishwasher?
On the Whirlpool WDTA50SAKW0 dishwasher, replacing the bottom door seal is a straightforward swap: remove the old seal from the lower edge of the door or tub lip, clean the sealing surface, then press the new seal fully into place so it sits flat and continuous for a leak-free close.
Before you start (safety and prep)
- Turn off power at the breaker; dishwashers can energize components even with the door open.
- Shut off the water supply under the sink.
- Pull the lower rack out for working room.
- Have a towel ready; a small amount of water can drip from the door area.
Replacement steps (bottom door seal)
- Open the door and locate the bottom seal along the lower door edge or the tub’s lower front lip (depending on design).
- Starting at one end, peel the old seal out of its channel.
- Clean the channel and mating surfaces with warm water and mild detergent; remove grit and detergent buildup.
- Align the new seal and press it in evenly from one end to the other; make sure it is not twisted or stretched.
- Close the door and check for uniform contact; reopen and reseat any loose sections.
- Run a short cycle and watch the bottom corners for drips.
Quick checks if it still leaks
- Seal is fully seated in the channel with no gaps at the corners.
- Door closes squarely and latches firmly; a weak latch can mimic a bad seal.
- Tub gasket and cabinet seal are intact and not folded.
| Symptom | Most common cause | What we do next |
|---|---|---|
| Drip at bottom corners | Seal not seated or twisted | Reseat seal; press corners firmly |
| Leak only during fill | Water level too high or splash | Check inlet/fill issues; verify spray arm isn’t blocked |
| Door feels loose | Latch not pulling door tight | Inspect/replace latch assembly |
Parts that commonly relate to door-area leaks
Why it matters
A properly fitted bottom door seal prevents leaks that can damage flooring and cabinets, and it helps the dishwasher maintain correct wash pressure for better cleaning performance.
Last updated: February 2026





