How to replace the circulation pump in a dishwasher

The circulation pump is the most important part of a dishwasher. Without it, it is impossible to create the required pressure in the system and wash the dishes. If such a part fails, the machine completely stops functioning. Replacing the circulation pump of a dishwasher will require considerable expense. Firstly, you will need to purchase the part itself, and secondly, pay a specialist who will replace it. You can cut costs a little by doing the repairs yourself. Let's try.

Symptoms and causes of failure of this part

If you find that the dishwasher is taking in water but refuses to wash dishes, do not rush to change the circulation pump. This part is relatively reliable and rarely breaks. Much more often, the garbage filter becomes clogged or the sprinkler nozzles become clogged, which leads to problems.

Unplug the dishwasher, open the door wide and look at the very bottom of the washing chamber. There you will see a plastic object similar to a glass and a metal mesh. If the mesh or “glass” is clogged with food debris, they must be cleaned, only then run the dishwasher again. If you have problems at this stage, read the article Replacing and cleaning the dishwasher filter. It has a lot of useful details to help you.

On a Bosch machine, the filter is unscrewed by hand, without much effort, and the mesh is lifted and pulled out.

The sprinkler impeller should also be carefully checked. You need to pull out the impeller, and then use a toothpick or needle to clean each hole. Once you get the water flowing freely, the problems should go away.

To make sure that it is the circulation pump that has broken down, listen to how the machine behaves after drawing water. If, having filled with water, the machine stops without making any more sounds - 98% of the central heating unit is broken. If there is a hum, but the dishwasher does not wash, you must first clean the paths of dirt, and only then get to the part. Why does the circulation pump break? According to the experts, the main reasons are:

• manufacturing defects;
  

  

• improper operation of the dishwasher;
• voltage drop in the electrical network;
• damage during transportation;
• handicraft renovation.

Lovers of homemade products need to pay special attention to the last point. It is important to remember that before you go to any device, you should study it, and only then start repairing it. And if there is such an opportunity, it is better not to repair the recirculation pump at all with your own hands, but to entrust this matter to a professional. The master will have to pay, but he will do everything quickly and professionally.

Preparing the dishwasher

It is still better to entrust some repair work to a professional, but we also understand that a good owner is always itching to repair the dishwasher himself. We will try to help. Let's start with the proper preparation of the dishwasher, without this you can't go anywhere.

1. We turn off the power to the machine, remove all the hoses and pull out the housing to a place where it will be convenient to work with it and begin disassembling the unit.
2. We unscrew the screws that hold the side walls, and then remove the walls.
3. Turn the dishwasher upside down and remove the sound insulation from the side walls.
4. A smooth door opening mechanism is installed on the side walls, which consists of a cable, plastic blocks and springs.These springs must be unhooked, while the door must be held so that it does not fall.
5. The entire tray is held on by several hooks, which are located in the corners of the body; they need to be unlocked with a screwdriver.
6. At the base of the tray where the dishwasher hoses enter there are still hooks that need to be released. Plugs with wires also fit there. They should be disconnected.
7. Having removed the hooks, you need to carefully lift the pan up, then disconnect the inlet pipe, remove it and put it aside.

The inlet pipe is quite difficult to disconnect; you will have to make an effort and carefully pull it out.

As soon as the tray is removed, all the most important parts of the dishwasher will appear before our eyes, and in the very center is a non-working circulation pump. You will not confuse this part with any other, because it is the largest and several bundles of wires approach it.

There are also flow-through heating elements installed inside the circulation pumps of Bosch or Ariston dishwashers, but you cannot change them individually. So if the heating element burns out or something happens to the engine, you will have to replace the entire unit, that is, the entire circulation pump. At this point, the preparation can be considered safely completed. Let's start replacing the part.

Changing the part

Where to buy a new circulation pump and how to check the old one? Let professionals check the old pump; it will be difficult to do it yourself. You can purchase a new pump in company stores or on selling websites. When ordering a part, be sure to tell the seller the model of your dishwasher. So, let’s not delay any further; let’s remove the old circulation pump.

1. Let's disconnect all the chips with wires.There are a lot of chips and wires that go to the pump, so it’s better to take pictures of how everything was before your intervention, so that you don’t confuse anything later when you install a new part.
2. There is a small metal clamp at the very base of the pump; it needs to be removed. Using a flat screwdriver, pry up the hook of the clamp and separate its parts.
3. In the place where the clamp stood, the circulation pump is connected to a rubber pipe. Disconnect the pump from the pipe.
4. Now we disconnect the circulation pump from the distribution block, which is located nearby.
5. Now the pump remains hanging on one suspension. We remove it and put it aside.

We take out the new circulation pump from the packaging. We hang it on a suspension, connect all the pipes and install the clamp. Lastly, we connect all the chips with wires. The main thing is not to confuse the sequence. We assemble our dishwasher in the reverse order, connect it and carry out a test run.

So, if the circulation pump does not turn on, it may have failed and needs to be replaced. Don't be alarmed, it's not all that complicated. If you try and read our instructions, you can make such a replacement yourself. Be careful, take your time, and you will definitely succeed!

2 reader comments

1. 07/15/2020 at 19:34

   Tat:

   The repairman was called today. At first he said that the pump was broken and could be repaired for 5 thousand. And when he pulled it out of the dishwasher, he said that it could not be repaired and replacement would cost 10 thousand.This is fine?

   Answer
2. 07/30/2021 at 16:31

   Anonymous:

   Certainly.
   Masters, that's what they are.

   Answer