Though a dishwasher that’s slow to drain or leaves water behind likely has a draining problem, the cause isn’t always as clear. Why is there standing water in my dishwasher? A clogged drain hose prevents water from draining, causing it to back up into the dishwasher. Troubleshoot a Whirlpool dishwasher not draining with these common causes and solutions.

How to Fix a Whirlpool Dishwasher Not Draining

Clogs and part malfunctions are most often responsible for a Whirlpool dishwasher not draining. We’ll pinpoint how to determine the source of draining problems and whether a DIY fix or professional repair is warranted.

Whirlpool Dishwasher Filter is Clogged

When your dishwasher doesn’t drain, a clogged filter is often the cause. The dishwasher’s filter is located above the drain pump, capturing food particles and debris to prevent them from clogging the pump. However, when the filter itself becomes clogged, water can’t pass through to be pumped and drained away, leaving puddles behind. You’ll also notice your dishwasher not cleaning dishes as well, allowing remnants and residue to remain.

Follow these steps to clean a Whirlpool dishwasher filter and improve draining:

  • Remove the bottom dish rack and locate the filter. Most are under the bottom spray arm or in a rear corner of the tub.
  • Turn the upper filter counterclockwise and lift up to remove it with the lower filter.
  • Separate and rinse both filters under running water, using a soft-bristle brush and dish soap to remove stubborn debris.
  • Replace the lower filter by lining it up with the tabs in the filter housing. Fit the upper filter into the lower filter’s opening and turn clockwise until it locks in place.

whirlpool dishwasher not draining

Clogged Drain Hose

Drain hose clogs can also be responsible for a Whirlpool dishwasher not draining. This thin, flexible hose transports used dishwasher water from the drain pump to the sink or disposal drain. However, it can be subject to clogs from debris and food particles, causing water to back up into the dishwasher after draining. 

Most drain hose clogs are found near its connection at the garbage disposal or sink drain or the dishwasher drain pump. Refer to your user manual to determine how to disconnect the hose from each of these points on your model dishwasher. Carefully remove any visible clogs with tweezers, pliers or a straightened wire hanger. If the clog isn’t reachable, the drain hose must be replaced.

Defective Drain Valve

The drain valve opens and closes during a wash cycle, allowing water to exit the dishwasher via the drain pump. Water not draining from dishwasher may be due to a defective valve that’s stuck in the closed position. The valve can also become clogged with debris that prevents it from opening and closing properly. 

Most drain valves are found behind the dishwasher’s front kickplate, near the motor. Inspect the valve and remove any visible debris that may be impairing its function. 

If you still find your Whirlpool dishwasher not draining and the valve fails multimeter testing with a lack of continuity, it must be replaced.

Drain Pump Malfunction

If the above components are functioning correctly, it’s possible draining issues are due to a Whirlpool dishwasher drain pump not working properly. The pump uses impellers powered by an electrical motor to flush used dishwasher water out of the tub and into the drain hose. If the impellers break or the pump motor shows a lack of continuity with multimeter testing, the pump assembly should be replaced by a professional service.

The professionals at Mid America Service can accomplish any Whirlpool dishwasher repair. Schedule your expert service today!