Fixing A Dishwasher That Won’t Drain

Having a dishwasher that won’t drain can be frustrating and repairing it through a service provider can be expensive. Repairing a dishwasher is not a difficult process. The key is to troubleshoot your machine to identify the source of the drain problem and then fix it. Sometimes, the solution may be as simple as just cleaning your dishwasher. Below we have provided you with a list of the most common issues for a dishwasher that won’t drain.

Check the Door Latch

An unlatched dishwasher door will keep your dishwasher from draining. Believe it or not, this is the most common problem that people overlook when troubleshooting a dishwasher that won’t drain. If the door is unlatched, latch it and check it again to see if it drains.

Check for Clogs

The most likely cause for a dishwasher drainage problem is a clog. Over time, your filters and pipes can fill up with food particles and other items that don’t always make it out of the plumbing system. You can remove clogs by doing the following:

  • Remove and clean all food traps and filters
  • Use a snake on the hoses and pipes
  • Run your garbage disposal with hot water as your dishwasher operates

Regular cleaning plays a big part in keeping your dishwasher working properly. Since most drain issues are the result of clogs, you should be sure to properly rinse your dishes before loading. Also, regularly wipe out and clean the inside of your dishwasher with a mild cleaning solution or use a commercial cleaning tablet on an empty wash every so often. When you keep it free of debris, you keep your water flowing smoothly.

Check your Garbage Disposal Drain Plug

If you’ve recently installed a new garbage disposal unit, this may be the source of your drain problems. Your garbage disposal is linked to your dishwasher, and a new garbage disposal comes with a special part that can keep your washer from draining. If you have installed a new disposal, look for the knockout plug. The drain plug in your garbage disposal (usually a small plastic or metal insert) should be removed.

Check the Drain Valve

Normally, as this valve gets power during the drain cycle, it opens a solenoid and allows water to drain. But not all dishwashers use this valve. If yours does, and if it is not working, you may need to replace it.

Check the Belt

Some older dishwashers may use a belt-driven pump. If the belt has come off or is slipping then the pump that drains the washer won’t function properly. Inspect the belt for signs of wear or stretching and replace it if required.

Check the Float

The float switch on your dishwasher may get stuck, causing water to remain in the appliance between washes. Depending on your washer, this may be a small float nestled in a corner or a hat-shaped device on the floor of your dishwasher. A broken float will require replacement or repair.

Check the Motor

Finally, a malfunctioning motor may not be able to pump the water out of the machine and into your plumbing. If you suspect a motor issue, it’s best to call in a professional to assess your motor and perform any repairs or replacements safely.

1 Comment

  • Jonathan Stokes

    That was a fascinating read! There are several reasons why your dishwasher may stop draining excess water. However, one common cause is the burnout of the solenoid valve, which creates drainage problems. A damaged solenoid will not start the draining process, which means it will not shift from the wash cycle to the drain cycle. If the solenoid is faulty, you’ll need to replace it to solve your dishwasher’s drainage problem.

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