Dishwasher · whirlpool
Whirlpool Dishwasher Not Draining: Filter, Pump, Hose
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Prefer to read it? Quick checklist
- Is debris visible on the removable filter?
- Yes: The filter is clogged: Water remains slightly above the filter screen and food debris is visible in the removable filter assembly. (likely)
- No: Is water near the door, or is there a hum or grinding sound?
- Yes: The drain pump is jammed or has failed: Water is near the door, a steady hum or grinding is heard, or the safe filter and hose checks do not restore draining. (possible)
- No: Can you see a kink or crush in the exposed drain hose?
- Yes: The drain hose is kinked: A visible hose section is folded or crushed, or the drain route does not match the installation instructions. (likely)
- No: Is the Whirlpool drain loop below 20 inches above the floor? Measure only if the connection is accessible without moving a connected dishwasher.
- Yes: The drain loop is too low: The hose loop is below Whirlpool's 20-inch minimum height above the floor. (possible)
- No or I cannot measure it safely: Was a garbage disposal recently installed or replaced?
- Yes: A disposal plug remains in place: A disposal was newly installed or replaced and the dishwasher inlet plug may not have been removed. (possible)
- No: Does the cycle pause without the pump starting, or is wiring damaged?
- Yes: An electrical or control fault needs service: The cycle pauses without the pump starting, wiring is damaged, or a breaker trips repeatedly. (possible)
- No, but the drain problem remains: Debris is blocking the sump: The filter is clear but visible debris or standing water remains around the sump at the bottom of the tub. (possible)
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For a Whirlpool dishwasher not draining, start with the filter, the exposed hose and the drain-loop route. Whirlpool specifies a 20-inch minimum loop height above the floor. That is Whirlpool’s measurement; the Frigidaire guide gives its own different manufacturer specification.
Two-minute Whirlpool checks
Look at the water level and the sound during the drain phase. Whirlpool says a small amount of water just above the filter screen can point to a partial restriction. Water close to the door can mean a severe blockage or a pump that is not working. A steady hum without movement and a grinding sound are separate clues; neither one alone proves that the pump must be replaced.
Check the visible hose for a kink and look at the installation path where it connects under the sink or disposal. Whirlpool says the drain loop should be at least 20 inches above the floor. If it is lower, the page says to use an air gap. The loop helps prevent siphoning and dirty water returning to the dishwasher. Do not use this Whirlpool measurement as a rule for another brand.
Before removing filters, switch the dishwasher off at the breaker and close the water supply. Whirlpool’s procedure uses towels, a cup and a kitchen baster to remove standing water, then removes the lower rack and filters. If the instructions do not match your model, stop and use the manual rather than forcing a filter or cover.
What the water and sound can tell you
The location of the water helps sort a partial restriction from a more serious drain problem. A little water just above the filter can point to a partial clog. Water near the door opening is more concerning and can indicate a severe blockage or non-working pump. If the filter is clear but the tub stays full, do not repeat cycles hoping the pump will clear itself.
A steady hum without water moving can point to an obstructed drain or jammed pump impeller, according to Whirlpool. Grinding can mean a hard object such as glass is involved. Stop if you hear grinding; do not reach into the sump to find the object. Whirlpool also lists a timer, drain solenoid on older designs or control board as less common causes. If the cycle pauses and the pump does not start, the cause may be electrical, such as a door switch, wiring, pump voltage or control issue.
Whirlpool’s drain-loop page says the loop is usually behind the dishwasher, near the sink or disposal connection. The relevant measurement is from the floor to the high point in the hose route. Whirlpool’s minimum is 20 inches; below that, its page points to an air gap. Reaching the loop can require moving the dishwasher, so do not pull a connected unit out just to measure. Ask the installer to verify the route if it is hidden.
If the display shows a code, use the user guide for the exact model rather than borrowing a Bosch, GE or Samsung code meaning. The separate leak guide is useful only for limited clues about the pump and seal; it does not convert every leak or drain symptom into a pump diagnosis.
Whirlpool’s filter procedure also makes clear why water level matters: remove standing water so the filter and sump can be inspected, then reinstall the filters before a rinse check. If water is near the door opening, that is not a reason to keep scooping around a grinding pump. Stop and arrange service instead.
Causes, from the filter to service
1. The filter is clogged
The filter is clogged
Water remains slightly above the filter screen and food debris is visible in the removable filter assembly.
- Difficulty
- Easy
- Time
- 15 minutes
- Tools
- towel, cup, soft brush
Whirlpool’s drain page starts with the filter. Switch off power at the breaker and close the water before removing the lower rack. The upper filter turns counterclockwise and lifts out; a lower filter may also be present. Rinse the filters and inspect the sump using the model instructions.
Remove standing water with towels, a cup or a kitchen baster so you can see the filter area. Do not reach into the opening without looking; hard debris can be sharp. Reinstall every filter before running a short rinse cycle to confirm whether the water clears.
2. Debris is blocking the sump
Debris is blocking the sump
The filter is clear but visible debris or standing water remains around the sump at the bottom of the tub.
- Difficulty
- Moderate
- Time
- 20 minutes
- Tools
- sponge, flashlight
After the filter is out, look at the sump for visible debris. Whirlpool’s water clues distinguish water just above the filter screen from water near the door. The latter can point to a severe blockage or pump trouble.
Use a flashlight to inspect; do not sweep a hand through the sump or turn the impeller. Remove only debris that is visible and safe to reach as the manual allows. If the object is sharp, lodged or out of reach, call service.
3. The drain hose is kinked
The drain hose is kinked
A visible hose section is folded or crushed, or the drain route does not match the installation instructions.
- Difficulty
- Moderate
- Time
- 20 minutes
- Tools
- None listed
- Part cost
- $50–$100Source: Dishwasher Repair Cost (Fixr) · Checked October 12, 2026
Check the visible hose for a fold or crush. A kink can stop water from leaving even when the filter is clear. Do not pull the dishwasher out by the hose, and do not disconnect a line while the tub contains water.
The $50–$100Source: Dishwasher Repair Cost (Fixr) · Checked October 12, 2026 is a planning estimate from Fixr, not a Whirlpool quote. Ask the installer to inspect the complete route and confirm the right replacement before ordering a hose.
4. The drain loop is too low
The drain loop is too low
The hose loop is below Whirlpool's 20-inch minimum height above the floor.
- Difficulty
- Moderate
- Time
- 25 minutes
- Tools
- tape measure
Whirlpool’s page calls for a drain loop at least 20 inches above the floor, above the household drain trap. The loop is commonly behind the dishwasher near the sink or disposal connection. If the loop is below 20 inches, Whirlpool says to install an air gap.
Measuring the route can require moving the dishwasher. Do not move a connected appliance if that would strain a water, drain or power connection. Have the installer check the height if the loop is inaccessible. The air gap is a separate backflow-protection fitting; use the arrangement specified for the model.
5. A disposal plug remains in place
A disposal plug remains in place
A disposal was newly installed or replaced and the dishwasher inlet plug may not have been removed.
- Difficulty
- Moderate
- Time
- 30 minutes
- Tools
- None listed
If a disposal was just installed or replaced, its dishwasher inlet may still have the knockout plug. Whirlpool’s drain guidance includes this connection among the checks. Do not put a hand into the disposal and do not disconnect its wiring.
Ask the installer to confirm the inlet is open. If the sink also drains slowly, the restriction may be in the household plumbing. A plumber can distinguish a disposal connection issue from a shared drain clog.
6. The pump is jammed or has failed
The drain pump is jammed or has failed
Water is near the door, a steady hum or grinding is heard, or the safe filter and hose checks do not restore draining.
- Difficulty
- Pro
- Time
- 45 minutes
- Tools
- None listed
- Part cost
- $100–$400Source: Dishwasher Repair Cost (Fixr) · Checked October 12, 2026
A steady hum with no water movement can suggest an obstruction or jammed impeller. Grinding can indicate a hard object such as glass. Water close to the door is a more severe clue. Stop the machine and do not reach into the pump area.
The $100–$400Source: Dishwasher Repair Cost (Fixr) · Checked October 12, 2026 is a secondary cost estimate, not a confirmed diagnosis. Ask the technician what they found in the filter, sump and hose before approving a pump repair. A pump can be only one of several possible causes.
7. An electrical or control fault needs service
An electrical or control fault needs service
The cycle pauses without the pump starting, wiring is damaged, or a breaker trips repeatedly.
- Difficulty
- Pro
- Time
- 45 minutes
- Tools
- None listed
If the cycle pauses without the pump starting, Whirlpool lists electrical or control causes such as the door switch, wiring, pump voltage, timer or control board. These components need a technician’s diagnosis.
Call for service if the breaker trips repeatedly, you smell burning or wiring is damaged. Do not open the electrical compartment or test a live wire. Consult your model’s user guide for any displayed code.
Where the water travels
Water passes through the filter and sump, then the pump pushes it into the drain hose. The hose rises in a high loop before connecting to the sink drain or disposal; an air gap is another backflow protection arrangement. A low loop, kink or blocked household drain can imitate a failed pump.
- Detergent dispenser
- Lower spray arm
- Middle spray arm
- Filter
- Sump
- Drain pump
- Drain hose
- High loop
- Air gap (if installed)
- Disposal inlet or drain connection
The drawings are generic. Use them to identify the filter, pump and hose; the exact connection and access points depend on the installation. For the shared symptom route, see the dishwasher not-draining hub. For filter removal steps, use the filter guide.
Repair cost and the next step
Whirlpool’s drain page does not define a dishwasher error code. If a code appears, use the user guide for the model rather than applying Bosch, GE or Samsung meanings.
Before a diagnosis visit, record the water level, sound and whether the sink drains normally. If the technician recommends replacing the pump or hose, ask what observation supports that part. The dishwasher pump-cost guide compares the estimates with a new unit; use the written quote and your model’s age to make the decision.
Call an appliance technician for grinding, a pump that hums without moving water, a persistent leak or any issue requiring internal access. Call a plumber if the household sink or drain backs up. Keep the cabinet closed until the cause is clear.
Frequently asked questions
How high should a Whirlpool dishwasher drain loop be?
Whirlpool gives a minimum of 20 inches above the floor. Its page says to use an air gap if the loop is lower. Follow the installation instructions for your model.
What does a humming Whirlpool dishwasher mean?
Whirlpool says a steady hum without water movement can point to a jammed impeller or obstruction. It is a clue, not proof that the pump needs replacement.
Should I remove the dishwasher pump to clear it?
No. Pump removal is not a consumer check. Stop and call service for a persistent hum, grinding or a leak.
Sources
- Dishwasher Not DrainingWhirlpool Product Help
- Checking the Drain Loop HeightWhirlpool Product Help
- Dishwasher Leaking Troubleshooting GuideWhirlpool Product Help