Dishwasher Clogged: What to do?

As the number of dishwashers increases, so does the number of incidents where the appliance is no longer working properly. One of the typical problems is that the dishwasher is clogged. However, most of the cause is quickly resolved and you do not have to call customer service.

Components of the dishwasher water drain

If the dishwasher seems to be clogged, it must be in any case related to the drainage. It makes sense to first know the individual components:

  • Sieves in the dishwasher
  • including the pump sump
  • in it or on the side Lye pump with impeller (in impeller housing)
  • drain hose
  • Drain pipe connection (with siphon)
  • waste pipe

Always check easy-to-solve options first

In the end these are also the areas of the dishwasher that you now have to check. As always, you always start with the simple options. That would be first the sieves in the dishwasher. Sieves, because in dishwashers there is usually more than just a sieve. Where exactly their position is, see when you take out the lower harness. You can also refer to the instruction manual.

Sieves, foreign bodies and impeller housing

Thoroughly clean the sieves. But before you use them again, you can check the pump sump. In many dishwashers, you can grab directly into the impeller housing of the drain pump. Not infrequently, foreign bodies have stuck here. Not only in the housing itself, but also in the pipe connection out there. Then you can use the sieves again.

Check drain hose

If it is a built-in appliance, you must now remove the dishwasher. That's the only way to get to the drain hose. Check this for kinks. Even the slightest disturbance can lead to food debris catching and clogging the hose. The drain is then checked at the siphon connection, the siphon itself and the drainpipe.

Wastewater connection, siphon and drainage pipe

In most kitchens, the dishwasher is connected to the same water connection and drain as the sink. If the water runs poorly or does not discharge at all, the cause of the blockage in the siphon and drain pipe area must be sought.

If the dishwasher is only apparently clogged

In a few cases (you should definitely check the previously described options for blockages and exclude them, as they are usually the cause), the dishwasher may even seem to be clogged. Then there is a malfunction of the drain pump. This may be a foreign body in the impeller housing. Some lye pumps work on the principle of a magnetic coupling.

Possible defects on the impeller

If the dishwasher is already older, the magnetic effect can be exhausted. Then the impeller does not always turn in full power. The problem can also occur sporadically. Likewise, the drive shaft of the impeller can slowly say goodbye to coil pumps. Check the smooth running of the impeller.

Tips & Tricks

During operation of your dishwasher, pay particular attention to any noise during pumping. Please note that many dishwashers pump off old water at the start of the program, even before the water inlet. Therefore, there may also be a blockage or a defect in the washing machine's drain pump when the dishwasher is not drawing water.

Video Board: How to repair a dishwasher, not draining - troubleshoot Whirlpool