Do-it-yourself Junkers speaker repair: main faults

Causes

It is worth considering that breakdowns can be of a very different nature. For example:

the flame does not ignite (clicks, there is a spark, but it does not work or there is no reaction to switching on at all);
goes out immediately or after a short time (both with automatic and manual ignition);
the fire goes out when you try to turn on the water, increase the pressure or weaken it;
the flame ignites, the water comes out lukewarm, and then the column goes out;
the speaker pops, crackles, mini-explosions appear when turned on;
piezo ignition does not work;
the piece works constantly, but when ignited the flame goes out;
the dispenser does not light up and there is a smell of gas;
When the tap is opened, the GSV rod does not move.

Column malfunctions can be divided into breakdowns caused by external factors and those of a purely internal nature. The former are not related to parts inside the unit itself and depend on additional parts or external influences (for example, adding temperature).

External factors

External breakdowns are as follows.

The most common situation is the lack of draft in the chimney of the column.
If it is not cleaned, it will become clogged with dust and dirt, and combustion products will not find an outlet and will extinguish the burner. Then, when the security system is activated, the gas supply will be cut off.
could accidentally end up in the chimney .
The unit could simply have run out of battery or batteries.
This type of malfunction only exists if there is an ignition, which operates automatically using batteries.

If the device does not work after the first installation or due to repair work on the plumbing system, then there is a high probability that the hot water supply line was simply connected in the wrong place.
Reduced water pressure.
It is necessary to evaluate the water pressure (it will be weakened, the water will flow in a thin stream). The ignition will stop working with low pressure, so the reason is no longer in the column, but in the water pipes. Although, it is likely that the filter itself, installed in front of the column, is clogged with something.
A faulty faucet that
adds too much cold water, causing the water in the tap itself to heat up too much and extinguish it.
Electronics
. Modern speakers contain a large number of control modules and sensors that control the operation of the entire unit. Their failures can lead to the gas stopping igniting.

Internal breakdowns

Internal factors are like this.

Incorrectly configured water heater.
Due to the change of seasons, the water temperature also changes, so the column needs to be adjusted, which is often forgotten to do.
The membrane on the water unit has failed.
If the membrane is many years old, it could have lost its elasticity, cracked, deformed, or become covered with lime deposits.
Filters or heat exchanger clogged
The pilot or main burner is clogged with dirt.
Problems
with the gas outlet sensor.
Pops or small explosions
when trying to turn on the equipment can occur due to insufficient draft in the ventilation or blockages of various parts of the water heater.

Features of column selection

The main difference between different models of geysers is the method of ignition, whether it is a product from junkers, bosch, Neva or Lux. Today it is very rare to find a device that is lit with matches, so this option is not even considered.

The most popular speakers today are units with piezo ignition. In them, you just need to press a button located on the device panel. In addition, such units provide the ability to set the desired temperature of the supplied water.

Dispensers with electric ignition are the most expensive option, which allows you to significantly save gas. The device is turned on automatically by a flow of water. Purchasing such products allows you to save on energy costs and get heated water with maximum convenience, which justifies the high cost of the water heater. Modern geysers, which are offered by well-known brands, as a rule, have three-level protection:

From the flame dying out.
Lack of draft in the pipe.
The occurrence of such a process as reverse thrust.

The equipment is protected from overheating by a hydraulic safety valve.

No draft in the chimney

Problems with draft are also familiar to all types of boilers - both with a conventional chimney and with a coaxial one. This problem is indicated by errors A4, C4, C6, the diode blinking at 45 degrees, sometimes alternately with 90 degrees.

When such errors occur, first of all, you need to find out whether there really is a problem, because the traction sensor could have worked incorrectly, and failures C4 and C6 may also indicate problems with the pressure switch.

To check the draft, first find out where your boiler takes its combustion air from. Models with an open combustion chamber take it from the room, usually through a grate at the bottom of wall-mounted and on the side of floor-mounted versions. With the combustion chamber closed, air is taken from the street through the outer pipe of the coaxial chimney.

Place a sheet of paper near the air intake point when the equipment is operating or attempting to operate. If it sticks to the grate or is pulled into the pipe, then everything is fine with the draft.

If there is traction, but it is weak, it may not be enough to hold the paper. In this case, a burning match is used to check.

Open chamber boiler

Most often, when traction errors appear, there really is none. The main reason is problems with the chimney. He can be:

clogged with soot or acid condensate;
clogged with foreign bodies - sometimes birds can build a nest in the chimney, the remains of which will fall inside;
incorrectly calculated - too thin or short;
not insulated enough, an air lock has formed.

Inspect and clean the pipe, if necessary, use the services of specialists.

Turbocharged gas boiler

A fan controlled by a flue gas pressure switch - a pressure switch - is responsible for air exchange in boilers with a closed combustion chamber.

The cause of traction failure is usually a malfunction of one of these devices.

The boiler owner himself can check the integrity of the inductor with a multimeter - it must have a resistance of 50 - 80 Ohms, otherwise it must be replaced. Also, due to the accumulation of dirt and dust, the fan impeller may be unbalanced.

To detect this, remove the turbine, blow off any dust and rotate the impeller several times. If it always stops in one position, attach a weight to the top blade and check again.

In addition, the pressure switch may not start the fan due to low voltage in the network: check it with a voltmeter in the socket, the lower permissible threshold is 195 V. If this is the problem, connect a stabilizer.

To check the operation of the pressure switch, connect the fan directly and try to start the boiler. If the operational problems disappear, the pressure switch requires replacement.

Boilers with a closed chamber are equipped with coaxial chimneys, which are installed horizontally and are therefore practically not subject to clogging. However, in severe frost, icing of the end of the pipe may occur, caused by freezing of condensate or improper installation of equipment.

You can get rid of this problem by insulating the chimney.

Popular models

The range of Junkers water heaters is represented by a small assortment. There are only two main models available to users, which have 2-4 additional modifications: Junkers WR (standard) and Junkers miniMax (mini). Also, all speakers differ in series: G, P, B, KDP and others. The two most popular configurations of these two models are:

Junkers WR 13P - electric ignition, works great at low water pressure, high power, but leaks are common and very noisy operation;
Junkers miniMAXX WR 15P – attractive, strict appearance, easy and intuitive controls, less noisy than other similar models, but various breakdowns and leaks are common.

Judging by user reviews, problems with German speakers of this brand are not uncommon: they do not want to ignite quickly, can heat water poorly over time, constantly require repairs and regularly leak. Speakers rarely go out - but this problem still occurs.

Advantages and disadvantages

Despite the quality of production of Junkers geysers, they are known for their shortcomings in the water heating system and breakdowns characteristic of these particular installations. For example, a common problem is that the wick in a Junkers geyser goes out - this is evidenced by numerous reviews. Perhaps the cause of such problems is poor traction - but the fact is there. Other disadvantages of Junkers water heaters are as follows:

All models, regardless of modification, are very noisy;
After a few years, the heat exchanger fails, which leads to leaks;
During installation, it is also necessary to seal the joints and gaskets, since leaks appear in the columns of this German company very often.

At the same time, the popularity of Junkers speakers does not cease to increase - the manufacturer was able to implement a modern system in these water heating devices, so the models also have enough advantages. The main advantages over similar gas water heaters are as follows:

Unlike other water heaters produced in the West, Junkers water heaters are adapted to Russian gas networks, and not European or Asian ones;
The heater can operate even at a minimum pressure of 0.1 atmosphere;
The system productivity is higher than that of analogues - up to 17 liters per minute;
A fire modulation system has been implemented, which guarantees stable operation and performance;
Improved security system and protection against emergency incidents;
Long service life - up to 15 years.

In addition, one of the advantages of the speakers in the model range is their low cost. When compared to similar models that have similar power and performance, the junkers speaker is much cheaper.

Interesting! The cost of the models depends on the supplier, the “mini” model has a price from 7,000* rubles, and the “standard package” from 11,0000*.

User manual

Before turning on the gas water heater and starting to use it, you must carefully read the rules for using the device and safety precautions:

When operating gas equipment, you should use only the type of gas recommended by the manufacturer.
When turning on the device for the first time, remember that air may accumulate in the pipes, which is why the burner may not ignite immediately. Therefore, ignition should be done twice with a short interval between attempts.
Setting the heating parameters is carried out by turning the regulator located on the body of the device. When switching on for the first time, set the lever to the minimum value and perform a test heating. Once it becomes clear that the device is working correctly, you can begin testing different temperature conditions in increasing increments.
In the process of further use, you should not forget to change the electric ignition batteries on time and periodically clean the column from scale, carbon deposits and dust.
If there is no draft in the chimney, the device cannot be turned on.
Unlike gas boilers with a closed combustion chamber, the column cannot be left unattended for a long time. This is dictated by fire safety rules and the design features of open-type burners.
Unauthorized disassembly of the device and installation of third-party spare parts is prohibited. Only a service center technician or a gas service specialist can repair dispensers.

Geyser Junkers Jetatherm WR 275-1KDP

We bought this speaker a long time ago. Reading reviews of modern speakers, you can’t help but be amazed at how poor the quality is. But our column has been in service for 7 or 8 years already. During this time, practically nothing broke in it, I only changed the current gaskets a couple of times. But otherwise the model deserves a positive review - it is reliable and works well in low pressure conditions. Quietly heats water up to 55-60 degrees, this is more than enough for the home. True, I would gladly supplement it with a battery-powered ignition - and then it would not be worth it.

The Junkers company existed until 1932. From that moment on, the company was purchased by Bosch Gruppe, which, however, did not affect the name of the water heaters produced by the division of the main office.

Junkers flow-through geysers are available in several modifications, differing in the principle of ignition, as well as the type of combustion chamber. Flow-through boilers operating using a pilot burner are popular among domestic consumers. The average service life of a Junkers column exceeds 15 years.

Brief operating instructions

Column operation

The main thing that the buyer needs to do after a geyser has been installed, be it a Junkers or Ariston product, is to carefully read the operating instructions from the manufacturer.

The lifespan of the unit largely depends on its correct use. That's why:

Installation, as well as subsequent maintenance of the device, should be trusted only to professionals.
It is necessary to systematically clean the igniter and heat exchanger.
Do not set the water temperature too high, as this can lead to rapid scale formation on the walls of the heat exchanger.
If the water hardness is too high, it is necessary to equip the column with a special device to prevent the formation of scale.

Instructions: how to turn on the gas water heater (video)

Today many people use gas water heaters. They ensure the availability of hot water even when it is turned off. But many consumers have a preconception that geysers pose a great danger. Modern geysers debunk this myth. If you ignite the column correctly, it will work properly and completely safely. Gas water heaters Vaillant, Junkers, Bosch, Ariston have good reviews.

Geyser JUNKERS WR-13 2B

Despite the fact that the modern market for household heating devices is saturated with a variety of electrical appliances, a gas water heater remains the most popular means of providing a room with hot water. It is this device that deservedly leads among the most functional units, capable of simultaneously supplying hot water to several water points.

Today's industry offers a solid selection of devices, but Junkers geysers, the operating instructions for which will be described below, are a product characterized by ease of use, reliability, durability and economical fuel consumption.

Specifics

PKO Pipe Coil JSC, which produces Astra gas water heaters, has been around for more than fifty years. Perhaps our grandparents also used his products. True, then this company was called differently.

The Astra column is necessary for working with hot water supply. Only gas is used as fuel.

The design of such a column is very simple and includes several components. The main part – a rectangular body – is fixed to the wall. The front panel contains windows for ignition and combustion control, a power button, and gas supply adjustment knobs. At the bottom there are connecting elements with threads on both sides of the gas supply, cold and hot water, and on top there is a section of the chimney pipe.

All key components are located in the middle of the case and secured to the panel located at the rear. It also includes holes for fastening. The firebox is made of good fire-resistant material that has a long service life. Ease of execution is considered an advantage in the model market and provides the manufacturer with great demand for its own products.

The working principle is as follows: in order for gas to enter the gas block and the ignition wick, you need to turn the ignition burner knob to the left and turn on the device by pressing the button - the burner will methodically turn on. The hot water outlet temperature is set by the position of the control knobs. By turning from the right side to the left, the gas supply increases, thus increasing the water temperature, and from left to right, on the contrary, it decreases.

According to functionality, the components of the column are figuratively divided into water and gas parts. On the market you can choose repair kits and spare parts for any unit separately, as well as the entire unit.

The technical properties of Astra speakers make it very easy to compete with other manufacturers. The main advantage is the power of the device: for certain models it is equal to or even exceeds 20 kW. A large firebox and relatively low gas consumption distinguishes this brand perfectly.

Naturally, each model has its own small details in the characteristics, but general values can be derived. For example, the hot water supply is approximately 10-12 l/min, the outlet water temperature range is 35-60 degrees, the operating pressure range is 0.5-6 bar.

The manufacturer also thought about the safety of its own products. If the burner goes out, the water supply will end.

Each model comes with a passport and instruction manual, which outlines operating rules and non-hazardous work in more detail, and also includes an important diagram of the device.

Now on the market there are a lot of gas-powered speakers with an original color palette. Consumers sometimes make the mistake of giving preference to color over technical specifications. The Astra gas water heater does not strive to distinguish itself due to its appearance, but focuses on its ability to work and has its own range of models.

Model 8910-00.02

has high power - up to 21 kW and an operating capacity of 12 l/min. Dimensions – 700x372x230 mm. The chimney has a diameter of 120 mm. Gas consumption per hour is 2.3 cubic meters. m. Ignition occurs manually.

Open type firebox. It is not difficult to study cravings. The gas pipe for connection has a cross-section of 3?4 inches, the water pipes - 1?2 inches. The weight of the device is 15 kg.

Model 8910-08.02

has slightly low power (up to 18 kW) and productivity (10 l/min). However, fuel consumption is also lower - 2 cubic meters. m/h. The weight of the unit is 14.7 kg. Otherwise, the device is very similar to the previous model. Ignition is also done manually

Model 8910-15

It has one significant difference - this system has electronic ignition of the burner, which is very comfortable. Now there is no need to worry about the availability of matches.

The power of the unit can reach 20 kW, productivity – 10 liters of hot water per minute. Gas consumption is 2 cubic meters. m/h. Speaker weight – 13.9 kg. The diameter of the chimney is 135 mm.

Model 8910-16

It is also equipped with an electronic automatic burner ignition control system. This automatic device is a record holder for power (up to 24 kW). The device heats water at a speed of 12 liters per minute. Gas consumption – 2.3 cubic meters. m/hour. The weight of the device is 14.7 kg.

It should be noted that spare parts for Astra speakers can be easily found at inexpensive prices.

Care tips and advice

For long-term operation of the gas water heater, you need to follow the important recommendations of experts:

Monitor the temperature of the heated water so that it can be used without diluting it with cold water in the mixer.
To purify cold water from hardness salts, it is enough to install a water filter in front of the column.
Carry out regular, annual cleaning of the column and flue ducts from soot.
It is not recommended to disconnect the speaker's electronic systems from electricity during periods of inactivity, such as at night. Frequent power outages lead to disruptions in electronic circuits. This is why false protection and device shutdowns occur when there is no spark at the gas water heater or it goes out.

Effective and durable operation of equipment depends on its correct selection and proper installation.

However, even with this, the user of the column may encounter malfunctions, which most often occur due to prolonged operation of the unit, and there is nothing to worry about, you just need to know what to look for

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The boiler keeps switching off

One of the most common problems: the boiler starts to work, the burner lights up, and then turns off. In this case, an error E9, CE, EA may appear, or the lamp 45 or 75 degrees blinks - “no ionization current.”

This problem can occur every time when igniting or occasionally, unpredictably, instantly or after a short period of time - because the reasons for this behavior of the boiler can be different. We will talk about possible problems and their solutions further.

Reason #1 – the filter is clogged

This is a common malfunction of double-circuit boilers, which is rarely indicated by self-diagnosis, because the water supply filter is usually located outside and is not connected to the sensor.

A shutdown occurs when you try to switch to DHW, because water does not flow into the coil or flows with weak pressure and the boiler overheats.

To clean the filter, turn off the boiler and find an area in the shape of an inverted “U” on the water supply pipe to the boiler.

Before and after it, turn off the taps, unscrew the nut - tip. Remove and thoroughly rinse the mesh and rinse the body. If the cartridge is damaged - bent or burst, then buy a new one. Put everything back together and open both taps.

Reason #2 – pump jammed

In most models of Junkers gas boilers, the pump is built-in and controlled by the system; its malfunction is indicated by a blinking 45-degree diode, error E9, depending on the model.

To find out if the pump rotor is jammed, you need to disassemble it.

To do this, do the following:

turn off the boiler;
find the pump in the lower right part of the boiler;
place a small container under it;
to remove the cover, unscrew the screw with a large shiny head using a flat-head screwdriver;
a little water will drain from the pump - make sure that it does not get on the printed circuit board or other electronics;
Try turning the rotor slightly inside the pump with the tip of a screwdriver. If it goes easily, we assemble and look for the fault further; if not, we repair or replace the pump;
put everything back together in reverse order.

A riskier, but also more accurate way to check is to turn on the boiler with the pump disassembled and the water turned off and carefully push the screwdriver deep into it until you hear a characteristic sound when touching the rotating rotor.

If the pump is clogged with air trapped in the heating system, a special valve will help drain it.

Depending on the design, it can be unscrewed or lifted. When the coolant supply tap is open, the air will come out with a hiss, and the boiler will work as before.

Reason #3 – sensor is faulty

It happens that the main burner manages to ignite, but immediately goes out and the boiler displays an EA error or the 60 degree diode flashes. This means that the flame control sensor - thermocouple or ionizer diode - is not working correctly and the protection is triggered erroneously, turning off the burner to prevent gas leakage without combustion.

To correct such a malfunction, you do not always need to change the sensor; sometimes it is enough to unplug the boiler from the socket and insert it upside down. This manipulation helps because many Junkers boilers are phase-dependent; if the phase and zero of the boiler and the outlet do not match, the ionization current is not generated and the sensor does not work.

Another reason for such a breakdown is a short circuit between zero and ground in any part of the electrical wiring in the house. Remember, have you recently driven nails or connected new electrical equipment? All equipment works with such a short circuit, only the grounding is incorrect.

If a similar problem is found, fix it and restart the boiler.

In all the cases described above, the boiler turned off immediately and could not enter operating mode even for a short time.

If the device as a whole works, but sometimes, at different intervals, usually from several hours or days, the EA error “flame is not detected” occurs, then the culprit is most likely low-quality and unstable voltage in the network.

This situation is not only annoying, but also threatens to break the board. To prevent this, purchase a voltage stabilizer.

Varieties

In general, all Junkers speakers can be divided into three groups, depending on the ignition method.

Those that belong to the B series do not have an igniter that can burn continuously. Two batteries are responsible for ignition, and the speaker itself turns on automatically. Safety systems control draft and flame, there is a fuse. The water pressure in the water supply affects the temperature.
The P series operates on the basis of piezo ignition. This means that the igniter does not stop working. Water and power have to be adjusted separately.
Finally, the G series models work thanks to HydroPower technology. There is no igniter at all, and a hydrodynamic generator is responsible for ignition.

The models produced are standard and mini. The difference between them is only in size. Prices for Junkers brand products are determined based on dimensions and additional services such as delivery and installation. Reviews are most often positive. Users only mention the need to timely clean equipment and remove blockages.

Preference is most often given to Junkers brand models with piezo ignition. When the hot water tap opens, gas will flow to the main burner. As a result, it will ignite from the pilot and heat the water.

About the benefits

All Junkers geysers were adapted by the manufacturer to Russian operating conditions:

Gas pressure - this indicator in Russia is somewhat different from the European one. Therefore, a dispenser that is not adapted to natural gas pressure according to Russian standards can significantly reduce its performance.

Junkers designers have created a special version of water heating devices for the Russian market.

Water pressure - a common problem is low water pressure, especially in apartments located on the top floors of old buildings. The Junkers geyser is capable of operating at any water pressure.
High performance - the products of this brand are in no way inferior to such well-known brands as Bosch, Ariston or Mora.
Modulation - all Junkers speaker models are equipped with a special flame modulation system. That is, the power of the unit will change automatically depending on the amount of water flowing at a particular moment.
Safety - the products of this brand are equipped with all the necessary elements that guarantee safe operation, namely, control of draft, flame and overheating.
The service period is 30 years.

Geyser does not light up

Reason 1. Not enough traction

The problem may be caused by a foreign object or soot in the chimney. At the same time, the draft decreases, and the protection system in the water heater is activated: the gas is automatically shut off.

It’s easy to check the assumption: open the window, place your palm on the chimney opening or light a match near it. If the draft is good, there will be a noticeable blow, and the light will noticeably deviate to the side.

Solution: The ventilation duct needs cleaning. You won't be able to do this on your own. You should call the management company and call chimney sweeps.

Reason 2. The power supply is discharged

This happens with geysers with automatic ignition from batteries: batteries or generators. As a rule, this occurs 8–16 months after the start of operation.

Solution:

Check the column power button.
Replace dead batteries with new ones.

Reason 3. Low water pressure

You can check the pressure by opening a cold water tap. If cold water flows as poorly as hot water, then the problem is in the plumbing. If the pressure of cold water is significantly stronger than hot water, then the problem is in the water column. Perhaps the filters in it are clogged or the membrane is deformed. Or maybe the hot water pipes themselves or the filters in the installed deep cleaning system are clogged.

Solution:

Call the utility company: they can give you an answer if there are problems throughout your entire water supply network.
Rinse the water purification filters or change the filter in the mixer.
Clean the column from soot and soot.
Replace the column water assembly membrane.
Submit a request to the utility service to flush hot water pipes.

Reason 4. No gas supply

Usually, when the column is ignited, you can hear a characteristic sound and smell a slight smell of incoming gas. If there is no sound or smell, then gas is not flowing.

Solution:

Call the utility service to find out if repairs are being carried out on your site: the gas may have been turned off centrally.
Check if your gas bills have been paid: it could have been turned off for non-payment.
Call a gas specialist.

Geyser Junkers miniMAXX WR 15P

Behind the strict appearance and good performance lies a poor filling, not much different from the filling of domestic gas water heaters Oasis. Let's start with the heat exchanger - it is incredibly thin, it leaked six months after purchasing the column. Then the gaskets began to leak, they had to be constantly changed, otherwise the neighbors could be flooded. Sometimes the igniter goes out because the gas control is triggered - and it is impossible to understand why it suddenly triggers. It is impossible to repair its “guts”, since everything is very thin, flimsy, and cannot be repaired; I don’t even know how it was developed and how it is produced - this is one continuous drawback. And even the fact that it can work with low pressure does not justify its snotty fragility. This is not a column, this is complete torture.

Advantages:

Easy control, no extra knobs and buttons, temperature can be easily adjusted;
Good performance, you can open two taps at once or take a shower while someone else is washing the dishes;
It doesn't make much noise and doesn't scare anyone with its noise.

Flaws:

This column itself has one big drawback, since literally everything in it breaks;
Terrible heat exchanger, thin copper that cannot withstand heat;
It constantly flows, threatening to flood the neighbors. Who knows how she will break through next time;
It cannot be repaired, since it is impossible to repair these “snots”.

Weak water pressure at the outlet

Despite the presence of a special automatic device that regulates water pressure, many users complain about the instability of this indicator. With changing supply strength, it is almost impossible to wash in the shower - the gas goes out, the water heater has difficulty igniting, and the water does not heat up. Surgery is required to determine the causes of this instability. The main reasons for the formation of such differences in water pressure are the following three factors.

The declared power of the device does not correspond to the real need for water resources; the power is not enough to normally meet everyday needs.

The presence of contaminants in the water entering the column is due to the fact that small particles of debris, lime and pieces of rust have accumulated in the supply system.

Scale formation on the walls of the radiator of the column, due to which it can also turn off. The last two causes of problems are worth considering in more detail.

Open type: how to start a gas water heater

Flow-through geysers installed in residential premises cause a lot of controversy. It should be noted that modern geysers do not pose a danger if you follow all the rules for their use. Everyone who lives in an apartment or house and uses such a column to heat water should know the rules for handling a water heater.

If there is a large accumulation of gas in the room, it is necessary to open the windows to reduce the gas concentration

It is important to know that if there is gas in the room, turning on electrical appliances and fire is strictly prohibited. If the water heater is not working properly, you should call the gas service.

How to light an open type column:

It is strictly forbidden to light a fire if there is no reverse draft in the chimney. Do not turn on the device without understanding the instructions. It is important that the room is equipped with a constant flow of air. You cannot repair or make changes to the operation of the gas water heater yourself.

When lighting, do not touch the front of the panel. When turning on the speaker, it is better to set it to low power. It should be noted that modern models of speakers are equipped with safety devices that stop the operation of the speaker if there is no traction.

Geyser Junkers WR 13P

Gennady

We bought a Junkers WR 13P gas water heater less than a year ago and are already planning to replace it. By its design, the column resembles a leaky sieve - water flows from all the holes, and the heat exchanger has already been soldered a couple of times. There is a feeling that the heat exchanger itself is made of thin foil and is completely unsuitable for working in gas equipment. Not a week goes by that I don't have to tighten or patch something, it just drives me nuts. The seals are constantly leaking, and the gas reducer failed after only a couple of months of operation. If you want to keep your nerves strong, do not buy this water heater; it is better to buy a Bosch gas water heater.

Advantages:

Electric ignition, thanks to which the column is freed from a constantly burning igniter;
Works well at reduced pressure, gas is ignited confidently and without hesitation;
Maximum capacity 13 l/min, which is what is needed for two taps.

Flaws:

Everything that can leak leaks, from the seals to the heat exchanger;
It makes noise during operation like an old Soviet speaker.

Blockages in the system

How to clean the mesh filter was written above. The heat exchanger system should also be cleaned - scale forms on it during operation. To do this, the heat exchanger is removed and placed in water with citric acid. The container with the solution must be heated on the stove. The inside of the heat exchanger should also be washed with this solution.

In Junkers gas devices and other similar units, burners often become clogged. A large accumulation of soot and soot leads to the fact that the column will not ignite. When cleaning the heat exchanger, it is worth cleaning the burner as well. Wash the outer part of the device with a solution of citric acid. It is better to clean the inside of the burner outside.

Features of operation

There are a number of provisions and rules according to which the use of gas equipment is permitted. Let's consider the basic requirements for open-type speakers:

Do not start work in the absence of draft in the chimney or in the presence of reverse draft;
It is not allowed to turn on and ignite without studying the operating instructions;
For normal operation, natural ventilation is necessary (window, vent);
It is prohibited to independently change the design of the equipment.

Dispensers with an open combustion chamber are most at risk of gas leakage. If you smell it, then:

Close the valve;
Open the windows and ventilate the room;
Do not light a fire until the room is completely ventilated;
Contact the repair service.

Before starting the appliance, check the presence of draft in the chimney.

How to properly check

There are two “folk” ways of checking:

Take a piece of paper and hold it near the chimney or ventilation. If the leaf tightens, it means the shaft is working properly. If it falls, you need to clean the hole.
Light a match and bring it to the viewing window. Does the flame deviate to the side? Then you can start the column. If it burns smoothly, check the chimney.

It also happens that everything is in order with the mine, but there is no traction. The room may not be ventilated, so there is no air flow for combustion.

How to turn on the water heater

Before turning on any equipment, there must be water in the heat exchanger. Therefore, you should first open the water valve.

Electric models:

Insert batteries into the battery compartment;
In some cases, you need to turn the power or temperature switch;
Open the gas valve;
Turn on the mixer on the hot position, which will ignite.

Semi-automatic devices:

Start the fuel supply;
Set the power and hold the piezo ignition button until the wick ignites;
When you turn on the water, the burner will light up.

It is not difficult to launch modern technology. What about an old-style product?

A simple ignition method: how to turn on a Bosch gas water heater

Using modern geysers usually does not cause difficulties. When purchasing speakers, you should pay attention to the presence of a passport and warranty for the product. It is also very important that the seller provides instructions for its use along with the speaker.

The instructions for using a modern Bosch gas water heater say that it must be put into operation by the craftsmen who installed the water heater.

How to light up a Bosch speaker:

Move the control to the right if it is in the “Off” position.
The regulator should move to the “Piezo ignition” position. This means the spark icon and vertical buttons will connect.
The start button should be pressed down with your finger while pressing the piezo power button. The fact that the piezoelectric element has triggered will be indicated by characteristic clicks.
It is important to ensure that the flame does not go out for the first ten seconds. Then you can transfer the power to the desired level.

After the power is switched to the desired value, the flame constantly burns in the mode that was set. But when you turn on the hot water, the column starts automatically heating the water. It’s easy to turn off the column – you just need to move the slider all the way.

Conclusions and useful video on the topic

You can see more clearly the most common breakdowns of Junkers boilers and their self-repair in the video.

Troubleshooting the flow sensor:

Do-it-yourself Junkers boiler repair:

As a conclusion, we can note that not every error generated by the boiler self-monitoring is fatal. Do not be afraid to repair the Junkers boiler yourself: many faults can be eliminated without the help of a specialist. But we don’t recommend tampering with the gas pipeline and soldering the board yourself, it’s too risky.