Bosch dishwasher: troubleshooting

Operating a Bosch dishwasher may result in malfunctions. The machine’s self-diagnosis system displays an error code on the display so the user can find the cause of the breakdown.

What are the most common breakdowns in a Bosch dishwasher? Is it possible to do the repairs yourself? You will find answers to questions in the article.

Bosch PMM error codes are collected and described in detail in a separate article.

Possible equipment diseases

Some users who have absolutely no understanding of the complexities of household appliances call service centers for every little thing. But many problems can be solved on your own:

• water does not enter the unit;
• water does not drain;
• The product freezes when turned on.

In the above cases, you can try to revive the equipment yourself. First, check whether the water supply tap is open, then check whether the door is closed tightly, inspect the outlet, maybe the reason is its malfunction. Water may not drain due to clogged filters or connection pipes in the drainage system. If everything is in order there, you need a wizard to diagnose all nodes.

Heating function

When washing dishes with cold water, the quality of cleaning noticeably deteriorates. The cause may be an incorrect location of the drain hose or a broken heating element. If the hose does not have two smooth bends at the base of the machine and at the entrance to the siphon, the water is partially drained into the sewer. The mixture of running and dirty water is noticeably colder than that required for high-quality dishwashing. Therefore, when using the dishwasher for the first time and removing cold and unclean dishes from it, it is first recommended to check the location of the drain hose.

If the hose is in order, there are 3 scenarios:

• replacing the heating element;
• checking the functionality of the thermostat;
• control system repair.

Aquastop worked

Does error code E15 appear on the display? This code signals that there is a leak somewhere, so the water intake is stopped - a typical “disease” of dishwashers of this brand. The problem can be solved quite simply: disconnect from the network, then carefully tilt the unit body to drain the water from the pan, and the sensor float will return to its original position.

If error code E15 occurs, carefully move the car in different directions - this is often enough for the stuck float to return to its original state and the code disappears from the display.

Error E15

The second common problem is the gaskets at the junction of the inlet hose with the machine and water supply system. If they are installed incorrectly, water will leak out, so when connecting the machine, you must carefully read the instructions.

Fill valve failure - from RUB 1,900*

The inlet valve is responsible for filling water into the dishwasher.
Normally, the electromagnetic coil opens the membrane flap based on a signal from the control board, and water is drawn into the machine. When the coil burns out or the valve membrane is damaged, the dishwasher stops working as it should. In rare cases, the valve body itself cracks: this can happen if the PMM was in an unheated room. SIGNS

If the valve's solenoid coil fails, it does not open and the Bosch dishwasher does not draw water. When the valve membrane is damaged, the situation is the opposite - the dishwasher constantly fills with water, even when turned off, and the leakage protection sensor may be triggered. On Bosch models with a screen, valve failure may be accompanied by the following error codes: E3 (F3), E5 (F5), E14 (F14), E16 (F16), E17 (F17) or E18 (F18).

HOW TO FIX

A faulty fill valve must be replaced with a new one.

*Prices are only for the work of the master, a new fill valve is paid separately.

The machine does not turn on

Suspicion immediately falls on the mechanism of the power button: although it is designed for 1 million activations, there are different cases due to weak contacts. If the home handyman knows how to use a multimeter, then this is not a problem: ring the contact groups to make sure they are working properly.

It is worth checking the serviceability of the power cable and socket - sometimes repairing a Bosch machine with your own hands begins with these activities. If everything is fine, then you need to test the control module. This cannot be done at home - you need a professional technician from a service center who will dismantle the required part and test it in the laboratory.

Start button on control panel

The drain filter is clogged

Symptoms: the program stops when you try to drain the water

The control board can block the continuation of washing even if there are any problems with the drainage, and rightly so: it will still not be possible to wash the dishes properly. One of the most common reasons is a clogged drain filter: water with detergent residue will not quickly leave the chamber, will remain on the dishes and turn into unpleasant stains after drying. We advise you to make it a rule to clean the drain filter after each wash - it gets clogged quickly.

Water does not flow in or drain out

We have discussed one reason in detail - this concerns the Aquastop system, the second may be due to a clogged filter. Cleaning it can be done quite easily without special technical knowledge - unscrew the fill hose, carefully pull out the mesh filter and rinse it under running water.

The filling valve located immediately behind the filter may also be faulty, but it is not repaired, but simply replaced with a new device. Details of the repair can be seen in videos, of which there are many on the Internet.

Sometimes this happens: water enters the unit, but the machine freezes in the rinse mode, in this case there are only three reasons:

1. The drain filter is clogged - it can be easily solved on your own.
2. The water drain hose is kinked.
3. The pump requires repair or replacement.

In the first case, everything is simple: at the bottom of the working chamber (tank) there is a coarse mesh filter, and a fine filter element is located nearby. It will take you no more than 10 minutes to remove and clean.

You can find out the condition of the hose by looking behind the car and visually determining its condition; if everything is normal, then the problem is not in it. To get to the pump, you will have to disassemble almost the entire car, since it is located at the very bottom; in addition, the car is turned upside down. Typical pump malfunctions are clogging with foreign objects, and the plastic impeller very often breaks or rotates on the axis due to blocking by a foreign object.

Important! Replacing the pump is a fairly complex dishwasher repair, so realistically assess your capabilities before you start disassembling the equipment.

Before replacing the drain pump, it is better to ring the voltage supply wires to ensure their integrity. If you find a defect or break, replace it, but observe the cross-section size.

Drain pump

Spontaneous shutdown

The dishwasher may turn off for the following reasons:

1. Wrong washing mode set.
2. There is no power supply. You need to check the switchboard, perhaps the fuse has blown or the circuit breaker has switched off.
3. The fuse in the plug has blown. It is necessary to replace it and check the entire safety device.
4. The main pump is clogged. This problem is difficult to debug with your own hands, but you can check the exhaust port. You need to lift the filter and inspect for blockages.
5. Problems with the thermostat.
6. The heating element has failed.
7. The programmer is broken.
8. Water does not flow into the working chamber. This may be due to the tap being closed.

The float switch often breaks

. It is a mechanism in the form of a plastic float located in the floor of the machine. When the chamber is full, it floats up. This switch can block the operation of the dishwasher if its valves are faulty.

The inlet port may have failed

located on the bottom of the device. It may become clogged and block the passage of water.

The pressure switch may break

. It needs to be disconnected from the terminals and blown into the pipe to which the plastic tube is adjacent.

Failures in the electromagnetic control coil are also common. The breakdown is very serious and will require the intervention of specialists.

the sprayer may fail

A burnt out motor or problems with a pump require calling in a professional.

The electric heating element may burn out during the drying phase.

or the fan will malfunction and the machine will turn off spontaneously.

No quality dishwashing

Quite often, users complain about poor quality dishwashing. The reason often lies in the fact that the operating mode was set incorrectly, but sometimes the machine is at fault due to clogged injectors or other annoying malfunctions.

The entire calculation of washing quality is based on the rocker nozzles. The flow speed sometimes exceeds 150 km/h; due to the strong pressure, these main elements of the working area rotate and knock off all the dirt and food debris from the dishes with elastic jets.

The main reasons for low pressure are as follows:

• clogging of the holes on the rocker arms;
• the coarse or fine filter is clogged - because of this, the required amount of water does not return to the tank to ensure normal pressure;
• temporary wear of the circulation pump impeller, so it cannot produce normal pressure;
• low engine speeds due to bearing wear and runout.

Cleaning the nozzles on the rocker arms is not difficult for any user; physical force is not required; on the contrary, it is better not to use it when removing a fragile product. Rinse the holes with running water; if any foreign particles remain, remove carefully with a toothpick.

Note to the owner! The more food debris you remove from the plates before placing them in the baskets, the less often the filters and nozzle holes will become clogged, without requiring urgent repairs.

Bosch dishwasher repair

Bosch dishwashers have been produced by the German company of the same name Robert Bosch GmbH since 1967 BSH Bosch und Siemens Hausgeraete GmbH. The history of the Bosch company begins in 1886. The first dishwasher was released in 1965. Production is concentrated at factories in Germany and Poland.

Bosch
dishwashers has led to the creation of a number of innovations, embodied in several generations of machines. The company's strategy is longevity and reliability combined with comfort and environmental friendliness. According to Bosch standards, after a product is discontinued, parts and consumables for it continue to be produced for at least 10 years. The manufacturer has also developed a new ActiveWater circulation system, where water has never been used so efficiently, 10 liters of water per dishwashing cycle.

Even a machine from a reputable manufacturer can malfunction or break down!

Quick online diagnostics of dishwasher faults (Simply select a problem from the list and find out the approximate breakdown)

Bosch dishwashers have the function of displaying an error code when certain malfunctions and malfunctions occur. Quite often, understanding what the error code means , you are able or breakdown yourself

For your convenience, a list of error codes for Bosch dishwashers is provided with an explanation of each specific code . The table also includes a description of the error, the reasons for its occurrence and possible solutions.

Decoding error codes for Bosch dishwashers

The dishwasher consists of units that are complex in design, and if they break down, you can fix them yourself if you have previously repaired dishwashers yourself. You must be familiar with safety precautions when repairing electrical equipment, have the necessary tools, time to study technical documentation and search for the necessary spare parts.

When carrying out repairs yourself, remember your safety!

Disassemble without disconnecting the equipment from the mains!

Don't delay with repairs!

A dishwasher is an integral system, where incorrect operation or damage to one unit or part entails a consistent disruption in the operation of other components.

Prompt and high-quality work carried out by a professional technician will guarantee the serviceability of your dishwasher for many years!

We offer:

• Departure throughout Moscow at a time convenient for you;
• Most faults are eliminated during one visit of the specialist;
• Discussion of the cost of possible repair options;
• Original spare parts from the manufacturer, as well as assistance in selecting analogues;
• Affordable prices for repairs (See table);
• We tell and show what we do;
• Consultations on the correct operation of the machine;
• We draw up a receipt with a contract, a work acceptance certificate and a guarantee (Strict reporting form), which will indicate your data, the brand and model of the dishwasher, the work performed and the warranty period.

Possible variants of the malfunction, the estimated cost of repair and time can be found out from the specialist, but it should be noted that even the best specialist cannot make over the phone

Repair prices

Call, write to us, and we will always be happy to help!

Consultations and requests for repairs are accepted daily, from 8 a.m. to 10 p.m. by phone

8 (985) 181 – 02 – 88

8 (985) 181 – 02 – 88 (Whatsapp)

or using an online application.

Leave a request for repairs

It is best to use the services of an experienced technician who is familiar with any problems and can fix the problem. If your dishwasher breaks down, entrust the repair to a professional: he will be able to perform all the steps quickly, efficiently and safely.

Important! When contacting, please provide the following information: Your contact information: name, phone number and address, make of the machine, if possible, send a tag with the serial number and product code of the machine and the day and time of arrival of the technician that suits you.

To carry out repairs and select spare parts for a dishwasher, you need to know its model and serial number.

The exact model of the machine is indicated on the tag on the dishwasher body or stickers, as well as in the operating instructions. If you have already purchased replacement parts yourself, please indicate only the make of the machine. For example, B0SCH SKS 51E26EU.

places where dishwashers may contain a sticker with all the necessary service information.

1. Under the door on the body. Most often, on dishwashers, the serial number is located on a sticker under the door. Either on the door itself or on the body. In most cases, the number consists of numbers, less often of numbers and letters .

2. On the back wall. The back wall of the dishwasher is a traditional place for all kinds of service information. If you couldn’t find a sticker with a number on the front, then it was probably preserved on the back wall.

3. In the passport or instruction manual. Finally, the serial number can sometimes be found on the documents that come with the purchase of the dishwasher. As a rule, the number is located in the passport or warranty card.

The arrows show the location of the tags

Dishwasher manufacturers encode on the tag (sticker) what they produced, when, where and from what parts. This information is encoded in two sequences of numbers (letters) product and serial numbers. Their combination is unique and applies only to one specific dishwasher.

Please take a photo of these tags

Go to service test on Bosch dishwashers

To maximize the life of your dishwasher, you need to carefully read the operating instructions. If you have lost it, here at the bottom of the page you can select your model and download it in pdf format.

Bosch dishwasher operating instructions

Dishwashers from manufacturers that we repair

Extraneous noise

Sometimes users complain about the appearance of extraneous noise when operating household appliances. As soon as you encounter such a problem, turn off the machine and start troubleshooting so that repairing the dishwasher does not make a significant hole in the family budget.

In this case, the search algorithm looks like this:

• the reason may be in the bearings of the circulation pump - water has leaked through the seals, with all the ensuing consequences, sometimes the pump needs to be replaced;
• the drain pump may also make strange sounds when the impeller is overloaded or broken;
• rocker arms and their fastening system, although such a malfunction is very rare.

There are no other sources of extraneous sound in a dishwashing machine.

Circulation pump

Preventing the problem from recurring

To prevent the problem from reoccurring, you should follow simple rules:

1. 
   Maintain the device according to the regulations.

2. Install the dishwasher correctly.
3. Clean filters on time.
4. Check the condition of the hoses and avoid kinks.
5. Install a voltage stabilizer to avoid power surges, which can be dangerous for any household appliance.

Find out everything you need to know about dishwasher water in this section.

Water does not heat up

Bosch dishwasher repair specialists very often encounter such problems, but the user may not be able to cope with this on his own if he does not have certain knowledge and skills. First of all, you need to be able to work with a multimeter in different modes, in particular an ohmmeter.

It is necessary to check the serviceability of the heating element - its resistance should not exceed several tens of ohms, if it is much more, then we can accurately confirm the presence of a break, the heating element needs to be changed. The thermostat must also be tested, as well as all wiring that supplies current to the heater. The absence of current indicates that it is necessary to ring the corresponding outputs from the control unit - there is no signal there either, which means the problem is in the module. Calling a specialist is inevitable; your own master is powerless here.

Dishwasher heater

Features of operation

Each model is characterized by its own characteristics, but they are all united by the presence of certain standard modes. Therefore, the specific operating algorithm is similar for most models. The water supply comes from the water supply; the mediator is a salt softener. At the bottom of the equipment, as a rule, there is a compartment with brine.

After heating, the water is pumped into the working chamber, for which a pump is used. Sprinklers are used to distribute the liquid. Waste water goes through two stages of purification, after which it is reused. At the end of the washing process, waste water is removed using a drain pump.

• turbo drying;
• condensation

In the first case, a fan is used that expels hot air with a high level of humidity, so the process is significantly accelerated. If condensation drying is used, the steam condenses on the cold walls, going down.

Typically, a standard cycle includes the following processes: preliminary and main washing, rinsing and drying.

Doesn't dry dishes

If the machine is equipped with a condensation dryer, check the presence of rinse aid, because it greatly affects the quality of drying dishes, causing excess water to drain to the bottom of the tank. Drying occurs naturally - there is simply nothing to break here.

It does not function in some modes, so before you get indignant, re-read the instructions again. Turbo drying is more complicated - it consists of a heater through which a fan pumps hot air into the working compartment, so both elements need to be checked.

Before doing this, you should check the wiring for integrity and the electronic module for signal output. It is not difficult to repair both elements: one must be replaced immediately, since the heating elements cannot be repaired, and the second, as surgeons say, “an autopsy will show.”

Meaning of fault indicators

CLEAN

Temperature sensor malfunction. If this is the case, the test cycle will be very short as the instrument will stop testing as soon as this is detected.

RINSE/DRY

Water/tank fill sensor. If this problem occurs, the test cycle will not be completed due to the fact that the dishwasher cannot determine the correct water level simply by filling/draining over and over again.

WASH

Heating fault. Check the heating element.

There is a current leak

When a machine gives an electric shock, it is extremely dangerous for all the inhabitants of the apartment and the first signal is that somewhere inside there is broken wiring insulation or there is a malfunction of the heating device. Therefore, a short circuit to the housing occurs - a thorough check of the entire electrical system is necessary. We have already written about how to ring an element; at the same time, you need to check all the wiring and other electrical components in the same way.

Do-it-yourself repair of Bosch dishwashers will cost users much less than calling a service center specialist, which costs from 500 to 1.5 thousand rubles.

Statistics say that Bosch machines occupy a strong leading position in the world in terms of repair costs, and spare parts have astronomical prices. By doing all the work yourself, you can save a decent amount and spend it on something more pleasant in all respects. And this video will help you do everything right.

When is warranty repair possible?

During the warranty period (1 year), the company's official service centers offer free repairs or replacement of failed parts.

However, there are several nuances that the consumer should be aware of:

• The dishwasher is intended exclusively for personal use. Using this device to service offices or organizations is considered a violation of the operating rules. This category also includes the use of household appliances when conducting business. Warranty service does not apply to such cases.
• The type plate located on the device must be retained throughout the warranty period. Its removal leads to possible violations of the instructions for use.
• Warranty repairs are not carried out in cases where it is proven that the consumer violated the rules for operating or transporting the device. Non-warranty cases also include damage caused by fire or natural disaster.
• To confirm the date of purchase, you must keep your receipt or receipt.
• Connecting the device to household communications must be carried out by service centers. Issued documents must be retained.

Video

We invite you to watch a video on how to find out and eliminate the reasons why the Gorenje PMM does not take in water:

You can learn more about one of the possible reasons why the Bosch PMM does not fill with water from the video:

About the author:

Electronic engineer with many years of experience. For several years he was involved in organizing the repair of household appliances, including washing machines. Loves sport fishing, water tourism and travel.

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Interesting!

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