How to use and repair Junkers gas heaters correctly

A common and effective method of keeping our homes warm and comfortable, particularly in the chilly winter months, is with a gas heater. Junkers gas heaters are distinguished from other brands on the market by their dependability and efficiency. To ensure their longevity and safety, however, as with any other appliance, proper usage and periodic repairs are necessary.

It’s essential to know how to operate a Junkers gas heater correctly for both economy and security. The heat produced by burning natural gas in these heaters is then dispersed via radiators or vents throughout the house. Before using the heater, make sure you are familiar with the safety precautions and instructions provided by the manufacturer. This entails being able to control the temperature, turn it on and off, and spot any early warning indicators of a problem.

Maintaining the optimal performance of your Junkers gas heater requires routine maintenance. This include giving the unit a thorough cleaning, checking for damage or leaks, and making sure there is enough ventilation. In addition to decreasing efficiency, neglecting maintenance can result in safety hazards like gas leaks or carbon monoxide poisoning. It is therefore strongly advised that you arrange for regular inspections by a qualified technician.

Even with our best efforts, problems may occasionally arise with our gas heaters that need to be fixed. It is imperative that these problems are resolved right away in order to stop additional harm and guarantee the heater’s continuous operation. Although homeowners may be able to perform certain repairs on their own, others might need the assistance of a professional. You can avoid potential safety risks, waste less time and money, and save money by knowing when to DIY and when to hire an expert.

We’ll look at many aspects of properly operating and maintaining Junkers gas heaters in this guide. We’ll provide you with the knowledge you need to keep your home cozy and safe while guaranteeing the safety of your loved ones, from basic usage tips to common troubleshooting techniques. Everyone can learn and gain from this, regardless of experience level with do-it-yourself projects.

Device Junkers boilers

• Semi-automatic – the company started to produce columns back in 1968. An ignition burner is used during operation. The ignition is carried out by means of a piezo element. The main burner is switched on when the DHW tap is opened.
• Automatic – operated by batteries or hydrogenerator. The series includes both simple Junkers open combustion chamber gas heaters and multifunctional models with modulating output. Burner performance varies according to the water pressure.

Model of Junkers heater

Water flow and power

Pn (kW) maximum rated heat output

Rated minimum heat output, Pmin (kW)

Heat output (range of adjustment) (kW)

Nominal heat load maximum Qn (kW)

Nominal heat load minimum Qmin (kW)

Allowable gas pressure in the supply

H G20 natural gas (mbar)

LPG G30/G31 (butane/propane) (mbar)

H G20 natural gas (m³/h)

G30/G31 LPG (propane/butane) (kg/h)

Maximum allowable head pressure (bar)

The water volume switch is located on the right.

Rise in temperature (°C)

Range of flow (l/min)

Operating pressure minimum, pwmin (bar)

The water volume switch is on the left.

Rise in temperature (°C)

Range of flow (l/min)

Features of flue gases

Draught required (mbar)

Mass of flue gas flow (g/s)

Possible faults

Naturally, not every technique operates as planned, so you should always be ready for anything. Thankfully, you can easily fix a significant percentage of probable Junkers gas heater issues on your own.

The burner may not ignite for a variety of reasons.

• It may turn out that initially both the inlet and outlet pipes were installed incorrectly. In addition, the water supply may be disrupted.
• There may be draft problems. When the chimney is dirty, the products of combustion do not go away, but accumulate inside, which slows down the operation of the equipment. The draught suffers also due to lack of fresh air, for example, when the window is closed.
• It happens that the chimney is blocked and this creates a potentially dangerous situation. Junkers must be shut down immediately and call the specialists.
• If the ignition flame goes out, it means that the safety relay needs to be replaced.
• It can be banal that the burner does not burn, because the battery is discharged, and therefore the automatic ignition system does not function. You will have to disassemble the front panel and charge it or replace the battery yourself.
• Poor pressure in the mains leads to poor water supply, again leading to operational problems.
• The wick goes out when the flame is uneven. As a result, the main burner also goes out. To solve this problem, simply clean the appliance.

Occasionally, the Junkers heater fails to illuminate, and on occasion, the device shuts off.

• The first reason is that the batteries have become unusable.
• The second reason – it is necessary to change the membrane, which is deformed or torn. It is good when the repair kit contains a replacement.
• The next possible option is that one of the control sensors does not work or the microswitch is worn out, this can be determined by the absence of a characteristic click.

Furthermore, it’s possible that the igniter has internal clogging, which is easily fixed by cleaning it. Similar outcomes are caused by an abundance of rust, dirt in the filters from low-quality water, and electrodes. Lastly, poor wiring, a blocked faucet on the gas pipe, and poor installation are also frequent reasons for malfunctions.

There are a few more typical instances. An auto-start appliance may not be producing any ionization current, which indicates that no water is flowing, if there is no spark. When the flame controller breaks, the spark disappears. Incorrect assembly, contamination in the tubes, ruptured water block membranes, and heat exchanger malfunctions are the most common causes of non-heating water in a column.

A broken or limescale-clogged radiator is indicated when the water heater produces excessive noise and heats up.

A heat exchanger or gland issue could be the cause of a leaking casing.

Watch the video below to find out how to light a Junkers gas heater.

Common breakdowns

The appliance malfunctions frequently as a result of misuse. Corrosion, low water quality, and electrical voltage surges are the causes of this. Any defect found in the service center after purchase is fixed at no cost to the customer.

The cost of paid repair will be about 1500 PHP. The breakdown’s complexity affects the cost. In order to avoid paying for delivery or hiring a private master, it is advised to bring the device to the service. The most typical issues are:

• water leakage;
• overheating;
• occurrence of loud sounds coming from the device;
• The water does not heat up;
• The sensor has stopped working.

These failures are mostly brought on by the development of a thick layer of scale. To fix the device on your own, you will need to identify the problem, buy original replacement parts, heed professional advice, and become familiar with the fundamentals of maintaining this kind of boiler.

Verify that all of the appliance’s fixtures are securely fastened and that there isn’t a gas leak while it is in use after repairs have been completed. You may only be able to fix the device on your own if you have comparable experience. Use only original spare parts that you bought from Bosch.

Signs of improper operation of the wick igniter and why it goes out

In piezo ignition columns, the igniter needs to burn continuously because the hot water tap needs to ignite the main burner when it is opened. Igniter fading prevents gas buildup inside the appliance by cutting off the heater from the gas supply.

The igniter might extinguish if:

• It is clogged with debris or dust.
• It was affected by an air flow from the outside.
• The thermocouple is burned out or worn out.
• There is no draught in the chimney.
• The draught sensor has failed.
• The solenoid valve is broken.
• No access to air.

Go to another article if the gas heater doesn’t operate at all.

A thermocouple that isn’t working properly is the most frequent cause of igniter fading. Its primary purpose is to cut off the heater’s gas supply in the event that something goes wrong with the appliance. The thermocouple senses the absence of heat and signals the gas to be turned off as soon as the igniter goes out. The wick will, however, fade out if there is damage to the thermocouple itself.

The igniter nozzles getting clogged with dust or debris is equally frequent. Because of their extremely small diameter, even a tiny contamination can prevent the igniter from burning completely, which leaves the thermocouple underheated.

The color of its flame indicates that there are issues with the igniter and that it could go out at any time. A wick that is operating normally will have a 90% blue flame with possible red specks, and a yellow tip. If the ignition burner’s flame is primarily yellow or orange, the wick isn’t functioning correctly, which will prevent the thermocouple from heating up enough and cause the burner to go out.

For more information on potential reasons why the igniter may fade out, watch the video below.

The principle of operation of the gas heater

You must comprehend the fundamentals of how a gas heater works in order to comprehend why they can malfunction. You won’t be able to discuss the shortcomings of such a device until you have studied the fundamentals of heating water.

It is important that you read the manual thoroughly before using the gas heater.

The companies that make gas columns are numerous. These include the renowned, pricey Bosh and Zerten, as well as more affordable alternatives like the Oasis, Vector, Neva Lux 5514, Beretta, Vanguard, Astra, and Mora columns. In any event, every one of the aforementioned models operates on the same fundamental principle. The distinction between automatic and semi-automatic columns is negligible, that’s the only thing.

The gas column’s primary components are:

1. The gas burner is one of the most important elements of the gas boiler.
2. A heat exchanger is located above the gas burner. It is a spiral bent tube through which water is heated.
3. The ignition device can be electronic, and ignite from a button or have an igniter or wick that does not stop burning at any time. Old gas columns had to be ignited with matches, while modern models have a piezo ignition activated by pressing a button.
4. The water-gas unit includes two components: the diaphragm and the gas valve. When the water is turned on, the diaphragm flexes and opens the gas valve, thus ensuring the flow of gas into the burner.
5. Safety automation includes sensors and a solenoid valve. In case of any malfunction, an electromagnetic sensor closes the valve and the heater shuts down. Also included in the set is a thermocouple, which triggers when the duty burner is turned off.

The gas heater does not have a water storage tank as a result. The liquid is quickly heated as it passes through the heat exchanger, guaranteeing multiple water points will always have warm water available.

A gas heater uses natural gas to heat water. These raw materials are far less expensive than electricity, which hurts gas columns’ appeal.

You will be able to comprehend why the gas column goes out if you are aware of its device. We’ll outline the primary issues and provide guidance on what to do in each situation.

Description of different types of Junkers brand columns

If a "Junkers" gas heater piques your interest, you should weigh the features of various models that fall under a particular series. For instance, the igniter on the B series is not always lit. It is powered by a pair of batteries. The boiler features multiple safety and draught control systems and turns on automatically.

You can use the functionality of ionization flame control and rely on the operation of the fuse. The temperature and water flow can be regulated depending on the water pressure in the water mains. You can find out about malfunctions by indication. The columns of this series are made of high quality copper, which can last for 15 years. Gas column "Junkers" can also belong to the P series, the equipment in this case has a piezo ignition, and the igniter will burn constantly. Flow and power can be adjusted separately. The flame intensity is controlled by a thermoelectric system. In the equipment that belongs to the G series, the manufacturer has provided ignition technology. The minimum water pressure at which the column will operate is 0.35 atm. The device does not have a burning igniter, and ignition is carried out by means of a hydrodynamic generator. If you prefer one of the columns of the G series, you can count on the fact that you can connect the equipment to three points of water intake at once. All models are available in minimum or standard sizes. Both versions have the same equipment, and the only difference is in the dimensions. Cost depends on the unit and the need for transportation and installation.

Why the gas heater goes out and how to fight this with your own hands

If the heater is not operating efficiently, shuts off abruptly, and then restarts slowly, one of the aforementioned issues could be the cause. In this situation, you should identify the cause and attempt to remove it yourself if it is not too serious. Let’s discuss some of the most typical issues that you can handle on your own, without the assistance of a professional.

It cannot be operated if the gas column goes out.

The following are the most typical issues that lead to the gas heater’s wick not burning:

1. If there is no draught in the chimney, then the reasons can be two: a clogged chimney and poor ventilation. In the first case, you will need to clean the chimney. You can do this yourself or use the services of a professional. However, there is another problem that is no less common6. The fact is that nowadays most apartments are equipped with sealed plastic windows, which limit the ventilation of the dwelling. In this case, you need to install a special inlet valve, which will ensure proper air circulation, if this is not done, then the column will work only when the windows are opened. If you have a supply valve, but suffer from the constant shutdown of the heater, check the draft by putting a lighted match to the inspection window. If the flame does not deflect, then repeat the experience with the chimney. If there is a draft in the chimney, the heat exchanger in the chimney is cleaned, if not, the chimney itself is cleaned.
2. When the burner itself goes out, it is most likely caused by a strong gust of wind. To prevent this from happening, do not open windows in windy weather. To restart the appliance, it must be switched off and on again.
3. Also, the column can go out due to overheating. This unpleasantness can occur from mixing hot water with cold water or due to the formation of scale in the heat exchangers. To prevent this from happening, the temperature should be regulated by changing the water pressure or using the regulator on the column. It is also necessary to constantly clean the heat exchanger from limescale with the help of special means.

These are the three most typical explanations for why branded and Chinese columns might not function. You can handle such a situation on your own by performing basic manipulations.

Installation and connection

It is preferable to leave installation and connection to a professional who has been trained to handle this kind of equipment. He will also be able to diagnose the machinery, recommend original spare parts that are worthwhile purchasing, and stop any malfunctions from happening. Even a professional should, however, adhere to the directions included with the product.

• The column is usually mounted in a warm room near the chimney so that the flow of air for combustion is not impeded. There is no need for additional protection of combustible surfaces. The device is installed in compliance with the required gaps separating it from the wall and furniture. The temperature in the room must be plus.
• First of all, the hood is removed, then it is tilted towards you and lifted upwards. Having connected the Junkers to the gas mains, the shut-off valves should be installed as close to the installation as possible. Before connecting to the water pipes, they should be well flushed, otherwise sand, lime and other contaminants will cause a delay in water supply. Both piping (gas and water) must be perfectly matched to the heater"s parameters.
• To avoid clogs, it is necessary to install protective filters.
• The column is attached to the wall with the help of brackets. It must not rest on water or gas pipes. If the burner has an electric ignition, you will need to insert two batteries with a capacity of 1.5 volt.5 volts.
• At the end of the work, the stopcock and water valves are closed, and the operation of the draught sensor is checked. The start-up procedure follows the instructions.

Features

The device’s Junkers characteristics show that it is ideal for Russian conditions. It is adjusted to the 13 millibar pressure maintained in Russian gas pipelines. The system can also function with the low water head that Russian water pipes naturally have. Junkers has 0.1 atmosphere, which is enough to carry out the intended tasks.

The gas burner in question has the capacity to heat up to 16 liters of water per minute, which is regarded as an exceptionally high indicator. Furthermore, the flame output is automatically adjusted based on the water flow’s size and strength. The designs have a respectable lifespan and are safe. The gadgets’ widespread appeal can be attributed to their ability to heat water quickly and their attractive appearance.

Among their primary benefits are their austere design, range of models with varying performance, design, and ignition system, reasonable price, and easy operation.

Rules of operation

It should be kept in mind that certain behaviors may cause the gas heater to malfunction. If fresh air is not supplied, Junkers’ ability to operate will be compromised. Furthermore, using excessively long hoses will cause malfunctions that result in low pressure and simultaneous opening of the hot and cold taps. Naturally, there will be drawbacks if periodic prevention is neglected.

As was previously mentioned, a valve and a piezo element that can light the wick are used to turn on the Junkers column. The burner will run all day long once it is lit. Furthermore, the boiler will automatically connect as soon as the hot water tap is turned on. By turning the two regulating knobs, you can adjust the water and gas pressure.

If the decision is made to clean the gas equipment, a specific algorithm is followed.

• First turn off the gas and water, then remove the cover.
• At the next stage, the water unit and smoke collector are dismantled.
• Finally, at the end, the heat exchanger is removed. The radiator can be washed in warm water, to which a non-abrasive cleaning solution has been added. The brush should be long-handled and fairly stiff.
• The wick and main burner can be cleaned well with a special awl. In addition, it will be necessary to remove carbon deposits from each nozzle. However, it is not recommended to do it yourself. It is better to invite a specialist once a year, who will combine checking with descaling. The professional will also remove deposits, check the tightness of the fittings and clean the flue gas side plates.

Use of electrical switches or the phone near the gas burner should be avoided if there is a gas odor.

It’s critical to turn off the gas supply right away, open the windows, let some fresh air into the room, and give a call to the experts who installed the apparatus. It is not advisable to store liquids or ignitable items close to Junkers in order to prevent hazardous situations.

The burner is extinguished and turned off when the room temperature drops below zero. If this process wasn’t carried out before the winter, you’ll need to make sure the water is heated when you connect the device the following season.

What to do if the igniter of the gas heater goes out

Calling a certified technician from our service center to clean and adjust the igniter is the only appropriate course of action. examining how the gas control system and thermocouple work. The master must also pay attention to the main burner as smoking gas can spread there. Generally, the best course of action for fixing a wick that goes out while the gas heater is operating is to give it a thorough cleaning.

Also see:

• Scheme of the gas column
• Why it is important to clean the gas heater annually?
• What to do if the gas heater stops working?
• Why the gas heater stopped lighting?
• What to do if the gas heater stopped heating water?
• Why the igniter goes out?
• What to do if your gas heater breaks down?
• Why you should flush your gas heater once a year?
• What to do if the gas column stops lighting up??
• Why the gas column turns off after 2-3 minutes of operation?

Cost of the appliance

The appliance’s price is totally determined by its version (B, P, G) and size (mini or standard). The price ranges for type B are typically between 10 and 13 thousand rubles, type P between 6.8 and 9.7 thousand rubles, and the G version between 11 and 12 thousand rubles.

Every appliance has a comprehensive instruction manual that includes information on how to install, adjust, and maintain it, as well as technical specifications. The device’s manufacturer advises against doing the installation yourself and instead to entrust the job to gas service experts. After all, a bad installation can seriously harm the incompetent installer in addition to breaking the device.

Numerous satisfied users have left the device with positive reviews. They view it as a dependable, secure, and reasonably priced device.

What to do if the gas heater goes out for other reasons

Apart from the aforementioned issues, there might exist other concerns that negatively impact the column’s functionality. With them, you can manage independently as well.

The room must be free of drafts for the gas column to remain lit.

Other reasons why the column is not working:

1. The column does not light up if you have a weak water pressure or dead batteries. The problem can be solved with new batteries and increased pressure. It is also possible that the igniter is clogged, in which case it should be cleaned.
2. It is also possible that the diaphragm has exhausted its service life. If this is the case, it needs to be inspected. Then clean or replace.
3. It may be that you have burned out the module boards. To prevent this from happening, connect the heater through a stabilizer.

You may have a satellite dish installed above your chimney by your neighbors if the heater goes out when you release the button. In this situation, it’s imperative to put out the flames or turn off the appliance and call the gas department.

Device and principle of operation

An average heater is made up of a casing that is spigot-connected to the chimney, a heat exchanger (copper works best), a burner that burns gas, an ignition system, sensors, and a mechanism that controls the gas supply. It’s very easy to connect the gas heater.

Its working principle can be examined using the piezo ignition model.

• The slider is adjusted to the middle position and then pressed down. At this point, the valve opens and gas reaches the wick, aka igniter.
• The piezo element located on the bottom left of the gas heater provides a spark that ignites the gas. The slider button is held down for up to 40 seconds. When it is released, the wick still continues to burn.
• At this time, the thermocouple of the heater warms up, which will then keep the gas solenoid valve open.

The necessary gas and water flow rates can be adjusted.

External signs of malfunction of the gas heater

The failure of the gas heater junkers to ignite could be caused by outside variables unrelated to the state of the main apparatus.

• Improper piping. In this case, it is necessary to check the connection of both the inlet and outlet pipes, which will also ensure a smooth water supply.
• No draught. This is usually caused by the chimney being clogged by a large amount of dust or foreign objects. Thus, there is no venting of combustion products and the burner goes out. In such a situation it is necessary to put your hand near the chimney or a small flame (from a match or lighter). It is important to have an open window. If the level of draught is sufficient, the flame will be deflected, and the palm of the hand will feel the movement of air.
• There is an unpleasant smell of gas in the room, which may be caused by neighbors installing an antenna above the chimney. In this case, you should immediately turn off the heater, ventilate the room and call special gas services.
• There is ignition of the heater, but after a while there is a fade out. It can be caused by excessive "sensitivity" of the protective relay. In such a situation, it is necessary to cool the room by opening the windows and contact the service department to replace the relay.
• A discharged battery or battery can also be the cause of the appliance not working with automatic ignition. This indicates the need for their replacement, which can be done independently.
• Low water pressure can indicate a malfunction of the junkers gas heater if the water pressure is different between the bathroom and the kitchen, for example. If they are equally low, the cause is a weak water supply network.
• Extinguishing of the wick may be caused by a slanting uneven flame. This causes the thermocouple to warm up badly, which automatically switches the unit off. In this case it is necessary to clean the dust, which is a necessary preventive measure when the wick goes out.

Junkers loudspeakers Troubleshooting and remedies

1) The ignition flame has extinguished once more.

2) It takes several tries before the ignition flame ignites.

3) The color of the ignition flame is yellow.

Blocking the ignition burner.

1) Turning on the hot water tap extinguishes the ignition flame.

2) Weak flame and insufficiently hot water.

There is not enough gas available.

1) Inspect the pressure reducer; replace it if necessary or if it is damaged.

2) While the appliance is operating, see if the butane gas cylinders freeze. Place the cylinders in a less frigid area if they are freezing.

The temperature of the water is too low.

Verify the power regulator’s position and adjust it to a higher output.

When the appliance is operating, the burner turns off.

1) There has been a temperature limiter trip.

2) The draft control mechanism has malfunctioned.

Turn the appliance back on ten minutes later. In the event that the issue recurs, contact an expert.

2) Let the space breathe. Turn the device back on ten minutes later. In the event that the issue recurs, contact an expert.

Decreased flow of water.

1) Inadequate water pressure.

2) Filthy water faucets or taps.

3) Blocked plumbing fixtures.

4) A buildup of lime scale has clogged the heat exchanger.

1) Inspect and rectify. * Inspect and tidy.

2) Empty the filter.

3) Scrub and eliminate any lime scale, if required.

* needs to be completed by a service and repair professional.

Tips

• If you find a problem with the igniter burning (it smokes or goes out), the best course of action is to contact a licensed gas appliance technician. He will check all the assemblies that can give this pattern and also clean your gas heater.
• If the heater turns on and goes out immediately, do not try to turn the appliance on again, but cut off the gas supply to the problem appliance and call a technician. If the cause of the shutdown was a gas leak, turning it back on may cause carbon monoxide to build up inside the room, which is not safe for the health of the occupants.
• Until the emergency service arrives, you can check the draught. To do this, light a match and hold it to the inspection hole on the speaker panel. If the flame is drawn in, the draught is sufficient. If there is no flame movement, disconnect the chimney pipe and repeat the match near the vent hole. A lit match will also help you identify problems with air flow into the room by holding it up to the window.

Features of choosing a heater

Whether a gas stove is made by Junkers, Bosch, Neva, or Lux, the primary distinction between their models is how they are lit. This option is not even considered because it is extremely rare to find a device that is ignited with matches these days.

These days, piezo-ignited columns are the most common type. All you have to do with these is press the button on the device’s panel. These units can also be used to adjust the water’s supplied temperature to a desired setting.

Columns with electric ignition are the priciest option, but they save a lot of gas. A stream of water automatically turns on the device. The high cost of the column is justified by the fact that purchasing such products enables you to get heated water with maximum convenience and save on energy carriers. Generally, well-known brands offer modern gas columns with three levels of protection:

• From the flame dying out.
• Lack of draught in the pipe.
• Occurrence of such a process as a reverse draught.

A hydraulic safety valve prevents overheating of the equipment.

How to determine that there are internal faults in the gas heater

A water heater may malfunction for the following reasons:

• clogged filters;
• the diaphragm is deformed.

Clogging of the metal filter grid happens when the water quality supplied to the premises is subpar (e.g., hard, with a lot of lime impurities). It is required to clean (or replace) the mixer filter in order to get the device operating normally again. Ordinary detergents can be used for cleaning in order to remove scale and rust.

Additionally, it’s critical to remove any sweat accumulation from the column itself.

The bolts holding the column’s front panel in place are unscrewed in order to access the diaphragm.

While examining the membrane, care is taken to ensure that it is in good shape and free of any chips. It must be replaced if such flaws are discovered.

Additionally, silicone membrane is a better option due to its more elastic and resistant surface.

It must be replaced immediately if such flaws are found. Additionally, since silicone has a more elastic and resistant surface, it is preferable to use it.

This will result in this part having a longer lifespan.

It is best to hire professionals to install the membrane; they will definitely be safer. Additionally, you can perform a general cleaning of the unit in addition to calling the master at the same time to perform a thorough diagnosis of the apparatus.

The following are additional potential causes of gas column fading:

• unequal heads of hot and cold water, which is solved by simply regulating the water supply;
• lack of cold water before starting the unit, which, by the way, leads to rapid deterioration of the column;
• insufficient time to hold the ignition button (20 seconds is the required duration);
• Failure of the outgoing gas sensor, which is found out by means of a dial test.

Now about the faults of Junkers Junkers, Bosch Bosh columns

1. As I wrote above, the column is assembled on rubber sealing rings. On older units, they get dewy and the seals start to leak. It is good if the master has them. It is not uncommon to meet with various kolkhoz variants from underwraps to sealants.
2. The membrane of the water block, unlike the membranes of Chinese speakers, works for a very long time. I met a ruptured diaphragm once. The price of the original membrane about 1800 rubles., Chinese analog costs around 400 rubles. Who can find it. There is no sense in the originals, because the prices are cosmic.
3. The complete water block of the gas column costs in the neighborhood of 4500-5000 rubles.. The price is high. Repair kits of seals are sold. You can reassemble the water block yourself. It"s not uncommon for a unit to have a leaky flow regulator. It is treated by replacing the sealing ring.
4. Rarely, but there is a leak of the water block stem oil seal. Alas, the oil seal separately can not be replaced. Changed with the cover of the water block. The price of the lid with the stem 2700 rubles. Very expensive!
5. The draught sensor and the overheat sensor are often damaged on Junkers. Sometimes so tormented that I change the whole set of thermocouple and sensors. If you do not plan to change the automation, you can short-circuit the temperature sensor without pain (many imported gas columns do not have it at all). The draught sensor should not be short-circuited, it is obviously a necessary thing and has saved more than one life. It stops the gas supply to the column, if there is no draught in the chimney. It can be short-circuited for a while to avoid sitting without hot water, and only to quickly find a replacement.

Before purchasing one of these columns, take a look at the reviews on the helpful website "Otzovik." Each person has rated and described their column. My review is sufficiently outdated. Otzovik.com/review_1713020.html is the URL.

At this point, I would rate this column a solid four. I advise you to purchase it. Typically, no spare parts are needed to cure anything. One of the column’s "minuses" is the high cost of replacement parts. Luckily, they don’t break all that frequently.

These are the operating manuals for Bosch and Junkers gas heaters, in case you’re interested.

/upload/file/quickdir/201104111631310.therm 4000 o type p speaker manual.pdf is the instruction manual for the Bosch gas heater.

Julkers gas heater handbook: /upload/file/quickdir/jinkers_wr10_13_15p_1.pdf gazovaya_kolonka_bosch. In a nutshell, I own everything. You can either call me or get into the heater yourself.

Prices and Services The article "Ustanovka gazovyh kolonok i kotlov" can be found here.

I hope this article was helpful to you.

Troubleshooting, which requires a specialist

• One of the three alarm sensors is activated: draught, overheating or combustion;
• The column is clogged, which is the reason why it is completely impossible to ignite it.

First things to do in the event that the unit malfunctions:

1. To exclude the first variant it is necessary to make sure that there is no gas odor, and the draught in the chimney is carried out. If this is detected, it is necessary to call a craftsman to clean the flue valve.
2. The overheat sensor is activated if the heat exchanger is clogged or if the control automatics are not working properly. Its purpose is to protect the copper coil. In this situation, the room is ventilated, waiting for the unit to cool down. Contacting a specialist is mandatory, as only a trained gas technician can properly adjust the heater after descaling it.
3. If the third sensor is triggered, the gas supply is automatically cut off. In fact, this sensor is an ordinary thermocouple. If there is a flame, a current is produced and gas is passed through the solenoid valve. When the fire is extinguished, the valve cuts off the fuel supply for 10 sec. A characteristic sound reminiscent of snapping fingers can be heard.

Crucial! It’s crucial to shut off all valves, open the windows, and contact the gas company if the gas heater emits a gas smell after being turned off.

Algorithm of actions at switching off the heat mechanism:

• 10-15 minutes are kept (for the sensors to cool down);
• The chimney draught is checked;
• the presence of gas is checked;
• ventilate the room;
• attempt to start the unit (put the power knob in the necessary position for switching on, keep it on for 20 seconds, press the "piezo igniter" button);
• if the performed actions did not lead to the desired result, check the functioning of the combustion sensor;
• non-functioning state of the combustion sensor can be caused by contamination of the pipe, which works on the principle of a vacuum cleaner, so it should be thoroughly cleaned;

The following steps are taken in order to clean the nozzle, which is the device that provides gas for combustion:

• the knob that regulates the water temperature is removed;
• set the required ignition position;
• the surface of the gas appliance is removed;
• lift up the socket clamps at the top with a screwdriver;
• these clamps are placed separately;
• by pushing the bottom clamp, the spigot is pulled out;
• The tube, on which dust is collected, is washed under running water, cleaned with cotton swabs and sticks;
• a prerequisite for normal cleaning of the pipe is the removal of all residues of detergent and water;
• The nozzle is also thoroughly cleaned;
• the tube is installed back into the appliance, starting from the upper attachment where the spring end is located;
• for the bottom fixing it will be necessary to apply enough force to tightly fix the spigot;
• the clamps are put back in place;
• a second attempt is made to ignite the column by simultaneously switching on the piezo ignition and the power regulator;
• knobs and buttons are kept in this position for at least 10 seconds;
• the knob for adjusting the temperature modes is inserted into its original place.

Additionally, this video explains the most typical reason why gas heaters fade:

How to Use Junkers Gas Heaters Correctly	How to Repair Junkers Gas Heaters
1. Follow manufacturer"s instructions for ignition and shutdown.	1. Check for gas leaks regularly.
2. Ensure proper ventilation in the room where the heater is installed.	2. Clean the burner and pilot light periodically to maintain efficiency.
3. Keep flammable objects away from the heater.	3. Replace faulty thermocouples or ignition systems promptly.
4. Schedule annual maintenance by a certified technician.	4. Monitor for unusual noises or smells indicating potential issues.

Ensuring the effectiveness and security of your heating system depends on the proper use and upkeep of Junkers gas heaters. You can extend the life of your heater and reduce the possibility of problems or mishaps by adhering to a few easy rules.

First and foremost, make sure a trained expert installs your Junkers gas heater. For the unit to operate safely and effectively, proper installation is required. To keep the heater operating at its best, a qualified technician must also perform routine maintenance checks.

It’s crucial that you carefully follow the manufacturer’s instructions when using your Junkers gas heater. This involves having enough ventilation to stop the accumulation of dangerous gases like carbon monoxide. To guarantee appropriate airflow, it’s also crucial to keep all vents and airways clear.

It’s important to take quick action if your Junkers gas heater has any problems. Ignoring issues could jeopardize the safety of your heating system and eventually result in more serious problems. For a professional technician to identify and fix any problems with your heater, get in touch.

Maintaining the efficiency of your Junkers gas heater also requires routine cleaning. Over time, dust and debris can build up, demanding more effort from the device and possibly even resulting in malfunctions. The heater’s exterior should be cleaned on a regular basis, as should any accessible parts.

Finally, when using a Junkers gas heater, safety should always come first. Make sure your home is equipped with a functional carbon monoxide detector, and make sure to test it frequently. Learn how to recognize the warning signs of a gas leak and how to react in an emergency.

You can operate and maintain your Junkers gas heater safely and effectively, guaranteeing dependable heating for many years to come, by adhering to these basic guidelines.

Our goal in writing this guide is to give homeowners easy-to-follow guidance on using and maintaining Junkers gas heaters. We’ll go over important pointers for secure operation, effective use, and resolving typical problems. For safety and efficiency, knowing how to operate and maintain your heater correctly is essential, regardless of how old the unit is or how recently you purchased it. We’ll walk you through the essential procedures to keep your Junkers gas heater operating smoothly and your house warm throughout the winter, from lighting the pilot to checking for leaks and making sure there is enough ventilation.

Video on the topic

Gaz34.ru Junkers gas heater. Restoration after 15 years.

junkers gas heater wick goes out and does not ignite

Gaz34.ru Repair of water block of Junkers (Junkers, BOSH) gas heater in Volgograd.

Junkers gas heater repair. The flame on the igniter is not fixed.

Junkers Junkers gas heater repair Junkers WR 13 P23

Junkers gas heater How to light up