TEN for the Bosch dishwasher: how to choose + replacement instructions

According to statistics, about 30% of owners of this practical and reliable kitchen equipment use dishwashers of the German manufacturer Bosch. But sometimes the owners are faced with the problem of supplying hot water.

The indicator gives a signal that the heater for the Bosch dishwasher has fallen into disrepair, which means that it must be urgently changed to a working one. But how to do it right and how to choose a new one? We will talk about all this in detail in our article. We also provide detailed instructions for the independent replacement of a broken heater;

What indicates a failure of the heater?

Almost all modifications of modern dishwashers have in their designs a complex of complex mechanical and electronic “fillings”, starting from the system of water supply and drainage pipelines with pumps, ending with a digital control unit.

Programs in devices are also diverse in their functions.

If an error code appears on the dishwasher's control panel “09”, “E09”, “F09”, this will mean the presence in the unit of a serious problem with heating the water.

Most likely, the TEN, which has become unusable, is also “guilty”, it is also a tubular heating element, and other elements of complex equipment may also be affected.

Did you see a different error code on the display of your dishwasher? Do not despair! We recommend that you familiarize yourself with decoding error codes Bosch brand dishwashers so you can identify the cause of the malfunction.

German dishwashers are famous for the quality of impeccable original assembly, but over time, the working nodes of this complex equipment can fail

The problem with heating the water can also provoke the following troubles:

• power short circuit residential premises;
• contact oxidationlocated at the terminals of the heating device;
• excessively hard waterentering the car from the water supply.

In such cases, the owners need to decide on an independent replacement of the electric heating unit or invite a service specialist.

Owners of electric dishwashers need to carefully monitor the readings of the digital display: the machine will display the codes (codes) of errors that arose in the device’s workflow. A list of codes is provided in the instruction manual.

For good reason, TENs are considered the heart of PMM of any configuration, regardless of the brand’s popularity and “sophisticated” functions. The use of dishwashers in domestic conditions proves this.

After all, damage to the heating elements, reduced to a critical indicator, can in 100% of cases lead the entire complex mechanism of the machine into disrepair. And why should such an expensive thing be exposed to undue risk?

A specialist from a service organization will install the heater in a qualified manner, but if this is not possible, the owner of the equipment can install this part in the machine himself, according to the instructions

The abnormal (incorrect) operation of the heating elements in the dishwashers is a dangerous prerequisite for the appearance of more serious negative consequences both in the subsequent operation of the device and in the lives of people who directly use the equipment.

That is why it is so important to try to quickly get rid of problems and breakdowns in your favorite assistant machine!

Water heater device

The electric heater installed in the dishwasher case belongs to the category of water heating elements, which ensure stable heating of the circulating water to +100 ° C. Some models may be equipped with temperature controllers.

Electric heater TEN for a dishwasher. This is a special tube filled with a heat-sensitive insulator, in the center of which there is a nichrome thread (spiral)

An electrically conductive spiral is located in the tubular heater, which transfers the design power to the entire external surface of the heating module.

The main components of the heater include:

• a tube;
• heating element;
• contacts;
• insulating layer.

The thermoelectric segment of the heater is produced in the form of a variety of designs. There are practically no flaws in the devices, except for a large area for installation and the need for repair if the spiral burns out.

The pump pumps water into the dishwasher through the top of the heating element. This is how the water is heated to the desired dishwashing temperature, which is controlled by the sensor

The electric heaters for dishwashers with a tubular design are manufactured by the industry with the following parameters:

• power - 15 W-15 kW;
• voltage - 12 V-380 V;
• length - 250-630 mm;
• outer diameter - 6.0-24.0 mm.

If you have a 3rd generation Boshev machine, then it has an advanced pump motor with a heater in it.

Causes of breakdowns and subtleties of choice

Malfunctions with one of the main structural elements of the dishwasher can occur for various reasons. We suggest that you familiarize yourself with possible problems in more detail, as well as provide a number of tips for choosing a new TEN.

Why can TEN break?

According to user reviews, the most frequent breakdowns of an electric heater in a dishwasher are burnout of a spiral thread and electrical closure at the terminals of the tubes.

Burnout is a direct consequence of the thinning of a refractory element standing in a hermetically sealed heater.

Flowing heating elements in dishwashers burn out often.

This may occur if:

• there is a leak in the heater;
• there was a sharp power surge (if such surges are a common occurrence, then it will not be superfluous to purchase and install stabilizer);
• the filter is very dirty;
• the machine is not used correctly (it is advisable to familiarize yourself with operating rules of the dishwasher);
• wear, the accumulation of a significant layer of scale on the heater (if the layer thickness exceeds 2-3 mm, then the breakdown of the element is inevitable).

With such serious breakdowns, there is nothing else to do but to replace the burned-out element with a new one. But before that, you have to buy it, choosing the right one - any model will not work. In this matter, a number of features will be taken into account, which we will discuss below.

The nuances of choosing a new heater

When ordering a spare part for online replacement at network or service stores, you must provide full model information, including the serial number. Information is on the nameplate label of the machine. Detailed recommendations for the search and selection of high-quality spare parts for dishwashers we brought here.

Also, when choosing a heater, it is important to pay attention to its technical characteristics: carefully check its general purpose, power and voltage parameters, diameter similar to the factory ones, as well as the compliance of the device with a standard connector for connection.

We advise you to pay attention to the preservation of tightness at the output ends of the purchased device.

Important and design features. On the plastic housing of the heating block there are bends for connecting to the nozzles and output ends for sensors

Electric flow heaters quickly perform heating, but consume a lot of electricity. We recommend taking this into account: if you have a dishwasher and an electric kettle working at the same time, then the traffic jams can fly out and the machine will turn off the power in the entire apartment.

Electric heaters designed for installation in BOSCH dishwashers are available in the following designs:

• submersible (wet) - in contact with the working fluid, carrying out its heating;
• dry - surrounded for protection by a special flask made of durable composite steatite material.

Dry heaters are considered by professional masters to be more effective in practice, because by eliminating direct contact with the liquid they can last a very long time.

The wide bulb of the dry heater helps to heat water very quickly, prevents the accumulation of scale, protects the machine from dry cork, it can be easily removed

In various modifications of Bosch dishwashers, heat distribution sensors for water flow, turbidity and an electric relay, which is switched by a membrane moving under the pressure of water, can be installed on the heating elements.

For the Bosch dishwasher, the heating elements supplied with the pump are sold. This is one integral part, therefore it is considered inseparable. Its cost is quite high and can vary in a wide price range: from 7,000 to 11,000 rubles.

Step-by-step instructions for replacing the heater

Did you decide to replace the faulty heater in the dishwasher with your own hands?

Prepare the following set of necessary tools:

• 2 screwdrivers - flat and cross;
• screwdriver;
• multimeter or ohmmeter;
• pliers and awl.

The algorithm for self-replacement of the electric heating element is as follows.

Step number 1 - check the new ten

Check the serviceability of the new heater on the measuring device: the resistance reading should not be higher than 20-30 Ohms.

If there is more, then there is a break in the spiral in it, if the resistance is normal, then the part can be safely installed instead of the damaged one.

Checking the parameters with a multimeter, you need to check the current state of the temperature sensor, inspect the wiring and contacts so that they are not damaged

Step number 2 - dismantling the trays and lower beam

Open the hopper door of the machine and remove the dish trays, disconnect the household appliance from the network, remove the hoses. Pulling up, remove the plastic sprinkler and filter cup with a stainless steel mesh.

Now you need to remove the lower beam: for this, just grab the part and lift up.

When the machine has reached the desired temperature, it turns on the pump, forcing water forcibly into the rotating arms - they need to be dismantled

Step number 3 - removing the pipe and rear panel

Release the pipe connected to the heating element - unscrew the 5 screws with a screwdriver or screwdriver that support the pipe connected by clamps with a flowing electric heater, then turn the case over so that the bottom is on top.

Now remove the back cover. If the machine has a retractable wall instead, pull it out. TEN is connected to the pump.

To disconnect it, grab it and turn half a turn to the right, pull to the side, then the pump will be in your hands. It remains only to remove the sensor from it.

Sensors are installed in dishwashers of 2 and 3 generations of release, they differ in various functional properties. When cleaning them, proceed carefully and remember the installation locations.

Step №4 - dismantle the burned-out TEN

Remove the fasteners holding the heater. In Bosch dishwashers, the heating elements are fixed to the bottom with rubber fasteners. You need to put your hand under the case and disconnect them.

In the process, it will be necessary to pick up plastic clamps holding the branch pipes using an awl. If you fail to damage them, then you can replace them with new ones, but it is better to act carefully.

Remove the burnt TEN. Disconnect the sensor installation plugs, nozzles and dismantle the burnt and unpressurized heater.

If the nozzles do not immediately lend themselves, then grab them with pliers, acting extremely carefully so as not to accidentally damage plastic parts: today their cost is quite high.

Step No. 5 - installation of a new heater-heater;

Replacing the heater with a new one does not take so much time. It is important to act extremely carefully, collecting all the elements in the reverse sequence of the dismantling procedure. This replacement process can be clearly seen in the videos shown in the last block of the article.

We also recommend that you familiarize yourself with installation and connection instructions Bosch brand dishwashers on their own, which will help you assemble the machine after repair without problems and properly connect it to the communications.

After installation, continue to monitor the performance of the heater, regularly cleaning it from scale by mechanical cleaning or using chemical ingredients.

In addition to TENA and other working nodes of the equipment in need of care. Therefore, to extend the life of the dishwasher, it is advisable to regularly conduct her service.

Conclusions and useful video on the topic

Video material from a professional craftsman working in the service of a Bosch dishwasher manufacturer.

The sequence of replacement of the heating element, a detailed explanation of the nuances of work. Tips for the practical use of heating elements applicable to specific modifications of dishwashers.

The heating system of the heater is located in the dishwasher at a close distance to other control nodes. Due to this fact, replacing it or the entire pump + heater block seems troublesome and difficult. But subject to the instructions, the repair will be successful and safe.

The main condition for the replacement is strict observance of the dismantling sequence of the inoperative machine assembly and accuracy when installing a new element.

Are you going to replace the heater with your own, but you still have questions about the process of removing the old one or installing a new heating element? Ask them to our experts in the block below this article.

If you specialize in repairing dishwashers and want to supplement our material with useful tips, please leave your comments on this publication.