How to Clean a Bosch Dishwasher Filter: The Complete Guide

The appearance of an unpleasant odor from the washing chamber or food residues on clean dishes after the cycle is completed MyTime It is often indicated that it is time to clean the filter of the Bosch dishwasher. Clogging of the bottom valve and mesh elements is the most common technical reason for the decrease in the quality of the wash and the appearance of an error code. E24 On display. Unlike many other brands, the technology Bosch It is equipped with a complex self-cleaning system, but even it is not able to fully cope with large particles of food, bones or scale accumulating in the bottom of the unit.

Regular maintenance of this unit prolongs the life of the circulating pump and prevents the mud from settling again on glasses and plates. Ignoring the need to clean the filtration system can lead to a drain hose clog or even a pump failure, requiring expensive repairs. In this guide, we will analyze in detail the design of the bottom node, explain the differences between the models with hydrofilter We will provide a step-by-step algorithm of actions for safe and efficient maintenance of your MMM.

Design of filtration system in dishwashers BoschWater treatment system in dishwashers Bosch It is traditionally composed of several levels of protection, each of which performs its function. The primary barrier is a flat mesh located at the bottom of the washing chamber, which traps large scraps, bones and other hard objects, preventing them from getting into the pump. Above this mesh is usually installed a cylindrical microfilter with a small cell, responsible for fine water purification before its reuse in the wash cycle.

In more modern models equipped with technology AquaSensorThe design can be supplemented by additional valves and water transparency sensors, making the dismantling procedure slightly more complex, but no less important. Understanding exactly how your filter works helps avoid breaking plastic latches when extracting. It is important to note that in some series SilencePlus or ActiveWater elements can be combined into a single module, which is removed in one movement, whereas in classic series, it is required to take alternate parts off.

• 🛡️ Rough filter: It retains large residues of food and bone, preventing mechanical damage to the impeller pump.
• 💧 Microfilter: captures fine suspension and fat, providing water transparency for final rinse.
• 🔄 Reverse valve: Often located under the grid and prevents the back flow of water from the sewer to the chamber.

⚠️ Warning: Before starting any maintenance work, be sure to disconnect the dishwasher from the power grid to avoid electric shock.

When to Clean the Filter: Signs and SymptomsDetermine the need to clean the filter of the dishwasher Bosch can be not only on a planned schedule, but also on a number of characteristic symptoms that are not recommended to ignore. The first and most obvious sign is the deterioration of the quality of washing: dried pieces of food remain on the dishes, and the glass becomes cloudy even when using a quality rinse. This is because the dirty water does not pass through proper filtration and is sprayed over the chamber again, carrying particles of the old plaque with them.

Another critical signal is the appearance of a persistent unpleasant odor, resembling the smell of sewers or rotten food, especially immediately after opening the door. This smell indicates that organic residues have been stuck in the filter element, which began to rot in a moist environment. Also pay attention to the work of the drain pump: if it hums louder than usual or the drainage cycle takes longer than indicated in the instructions, this is a sure sign that something is hindering the flow of water.

📊 How often do you clean the dishwasher filter?

Monthly

Six months

Only when there are problems

Never cleaned.

The table below will help to systematize the symptoms and understand how urgently the intervention is needed:

Symptoms.	Probable cause	Urgent action
Food residues on dishes	Microfilter clogged.	Tall.
Bad smell.	Organic rotting in the grid	Medium
Error code E24	The problem with the drain/filter	Critical
Water stays at the bottom	A clog in the valve or hose	Tall.

Preparation for cleaning: tools and safetyBefore proceeding with the procedure, it is necessary to properly prepare the workplace and make sure that all the necessary funds are available. You won’t need a sophisticated professional tool to clean the product, but using the wrong materials can damage delicate plastic elements. The main tool will be a soft sponge for washing dishes, preferably new, so as not to smear the fat on the surface of the filter.

As a cleaning agent, it is best to use specialized gels for dishwashers or ordinary lemon juice, which perfectly breaks down fat deposits and removes scale. It is strictly forbidden to use abrasive powders, metal brushes or brushes, as they can scratch the plastic, creating an ideal environment for the reproduction of bacteria in microcracks. Also prepare a container with warm water and soft fabric to wipe the bottom of the wash chamber after removing the filter.

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To remove the old fat, soak the filters in warm water with the addition of vinegar or citric acid for 15-20 minutes before the main cleaning.

Don’t forget to check the condition of the sealing rubber bands around the filter cup. If they are visible cracks or they have lost elasticity, this can be the cause of leaks, and in this case, the elements are better replaced with new original parts. Bosch. Safety also involves hand protection, so it is recommended to use rubber gloves, especially if you are using aggressive chemicals to remove fat.

Step by step: how to remove and clean the filterThe process of dismantling and cleaning the filter in dishwashers Bosch It is quite simple, but requires care and consistency of actions. First, you need to remove the bottom basket for dishes to get free access to the bottom of the washing chamber. The rotating sprinkler is also better removed by unscrewing the fixing nut or simply pulling up, depending on the model, so that it does not interfere with access to the filter node.

The central element of the filtration system is usually marked with arrows or points indicating the direction of rotation. To make the system, you need to rotate the top of the filter counterclockwise (usually 1/4 or 1/2 revolution) until the characteristic click or match marks. After that, the cylindrical glass rises freely upwards, opening access to the flat mesh lying beneath it, which also needs to be removed for washing.

☑️ Checklist of proper cleaning

Turn off the power supply to PMMRemove the bottom basket and sprinklerTurn the filter counterclockwiseWash all the elements with warm waterWipe the bottom of the cameraReverse the system

Done: 0 / 6

Carefully rinse all extracted parts under a stream of warm running water, using a soft brush to remove the dried particles. Pay special attention to the small mesh of the microfilter, since it is most often clogged with a fat film, which is difficult to wash off with simple water. If the contamination is strong, you can use a toothbrush with soft bristles, gently walking along the surface of the mesh without strong pressure so as not to deform it.

Cleaning of the drain pump and checking for blockagesAfter you have cleaned the main filter elements, it is recommended to check the condition of the drain pump, which is directly under the rough cleaning mesh. Small objects such as toothpicks, fruit bones or even glass fragments that can block the impeller pump often accumulate in this compartment. To access the pump, it may be necessary to remove the mesh itself and, in some models, unscrew several screws or remove the protective cover.

Visually inspect the space around the pump impeller (impeller) and remove all foreign objects with tweezers or fingers in gloves. Make sure the impeller rotates freely by hand and does not snag. If you find solid scale deposits on the walls of the pump, they can be neatly removed with a wet cloth, but avoid using sharp metal objects that can damage plastic blades or the pump body.

⚠️ Warning: Never try to force a jammed pump or use chemical solvents to clean the pump’s internal parts without removing them from the machine.

What to do if the water does not go away?

If after cleaning the filter and pump water is still at the bottom, check the drain hose for inflections and blockages. The problem may also be in the sewer siphon, which also requires cleaning.

Assembly and test run of the dishwasherThe final stage of maintenance is the correct assembly of all elements in reverse order, which is critical for the tightness of the system. Set a flat grid in your place, making sure that it fits tightly to the bottom and has no distortions. Then insert a cylindrical microfilter, combining the guides, and turn it clockwise until fixing; you should hear a slight click or feel the accent, and the marks on the body should match.

After installing the filter, return the sprinkler and the bottom basket to place, making sure that nothing interferes with the free rotation of the skewer. Run a short cycle of washing without dishes, adding a small amount of means to the compartment to check the tightness of the joints and the effectiveness of draining water. If the machine is quiet, the water is gone completely, and there are no stains on the dishes (in case of repeated washing), then you have successfully cleaned the filter of the Bosch dishwasher.

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A properly assembled filter should not have backlashes, and water after draining should not remain at the bottom of the chamber.

Frequent Questions and Answers (FAQ)