DIY double-circuit boiler pump repair

In what cases can you repair a gas boiler yourself? Often during the operation of this equipment, problems arise - non-observance of the temperature regime of heating water, breakdown of a pump or fan. Some of these defects can be eliminated by hand, but first you need to find out what to do on your own is prohibited.

Modern gas boilers are reliable devices that provide efficient heating of the coolant. Their design can be divided into 3 main parts - a burner, safety blocks and a heat exchange unit with additional elements (circulation pump, expansion tank, fan). If a breakdown occurs in the first two, a specialist call is required.

Gas boiler standard design

Self-repair of gas boilers is possible only in that part of the equipment in which the gas supply is not involved. Any intervention or change in design (equipment) can lead to a serious emergency. It is possible to identify the main types of restoration work that are feasible at home without the involvement of specialists.

• Washing the heat exchanger. It is carried out using special pumps or manually. For the latter it is necessary to dismantle the block.
• Traction problems. Chimney clogging is often the cause.
• Failure of the fan, expansion tank, pump.

First of all, you should familiarize yourself with the boiler operating instructions. In addition to recommendations for preventive maintenance, it provides a detailed description of the design. If this document is missing, you can take the necessary documentation on the manufacturer's website.

A large scale layer on the inner walls of the heat exchanger can cause uneven heating of the water. This is due to a significant decrease in the thermal conductivity index. As soon as the water heats up to the required temperature, the boiler automation switches off (reduces) the burner power. But due to the high inertia, the next "batch" of the coolant will heat up much more slowly. As a result, there is an alternation of streams with different temperature indicators. This phenomenon brings the greatest discomfort during the use of hot water.

The heat exchanger must be cleaned to remove scale. It is best to dismantle the structure - this way you can make sure its integrity and at the same time remove corrosion. The order of work is as follows:

• Disconnect the power supply and shut off the gas supply.
• Close the taps for water inlet and its distribution in the heating and hot water system.
• Remove the front cover of the boiler.
• Discharge of residual water. For hot water supply - open the hot water tap; for heating - a special valve inside the structure.
• Dismantling the heat exchanger. It is important to remember the order of its attachment.

Types of chimneys for a gas boiler

Periodic burner shutdown can be caused by poor chimney draft. The sensor signals a large amount of CO² and the boiler switches off automatically. For cleaning, you first need to check the condition of the chimney.

Most often, problems arise in the winter. They can be associated with the formation of ice on the outer part of the structure. As a result, the effective diameter of the chimney is reduced, which directly affects the draft parameters. To minimize this factor, it is recommended to make external insulation or install a chimney with a layer of basalt wool.

Large amounts of soot are rare in gas boilers. However, with a long service life, it can occur.To eliminate, follow these steps.

1. Disconnect the pipe from the boiler and completely dismantle it.
2. Clean the inside of the chimney with a special brush.
3. Using a household vacuum cleaner, blow out the structure.

If the gas boiler is connected to a stationary pipe (made of bricks), you need to use special tools to remove soot. They are brushes attached to a steel rope. After cleaning, most of the soot will enter the boiler. Therefore, it should be rinsed thoroughly.

If individual modules (expansion tank, pump or fan) are out of order, it is recommended to invite specialists to replace them. Qualified repair of gas boilers is possible only if you have a set of tools and a certain practice in performing these works.

In order to avoid accidents with a gas boiler, it is recommended to adhere to the rules for operating the equipment. This will significantly increase the maintenance-free service life of the device.

Gas boiler complex mechanism... It can be divided into 3 main parts: electronics, gas pipes and burners, heat exchange unit (pump, tank, fan). Only the last part can be repaired on your own.

Attempts to restore the first two parts, without proper skills, will lead to final breakdown boiler, gas leakage and other negative consequences.

Gas boilers rarely break... This is due to natural wear and tear equipment, or because of factory marriage... Other cases of breakdowns are necessarily associated with the following factors.

The boiler can break down due to water. At risk, first of all, there are two-circuit devices used not only for heating, but also for hot water supply.

The fact is that rust from the pipeline, other fractions, clog the thin tubes of the heat exchanger during the year.

Avoiding water quality troubles can help coarse filter... It is installed during installation per feed pipe liquids. For greater security, you can add to the system fine filter, or install a complete cleaning system.

Household appliances are resistant to power surges and shutdowns electricity. But a gas boiler is a finer piece of equipment. A power surge will cause the boiler to shut down or damage the electronics. A malfunction of the device or a power outage will lead to freezing of the heating pipes.

In order to avoid sad consequences, they establish at least one of the additional devices.

• Stabilizer - a device that will solve the problem of power surges. Its size is small, it is installed both in an apartment and in a private house.

Photo 1. Electronic voltage stabilizer Resant Lux for a heating boiler. The device is wall-mounted.

• Uninterruptible power system. Will equalize the input voltage. Allows the boiler to work for a while in the absence of electricity. Suitable for use both in the apartment and in the house.
• Gas generator. It does not affect the stability of the network in any way, but it can save with a prolonged power outage. Used only in the private sector.

Attention! When buying a generator, check whether it really is single-phase.

Installation of complex equipment layman will entail serious consequences. In frequent cases, the following problems occur:

• During installation neglected grounding... This leads to a build-up of static on the body of the device. When an electric arc occurs, the boiler automation often fails.
• After installation did not release air from the system... The resulting plug will lead to rupture of the coolant pipes and damage to the pump.
• Harness violations a gas boiler system, with a cast iron heat exchanger, will cause a split in an important part of the apparatus.

If the installation of the gas boiler is carried out correctly, operational problems arise only due to weather conditions... In cold winter, the desire to keep warm pushes people to use the boiler at maximum mode. The equipment withstands such conditions, but the gas system does not. A decrease in fuel pressure leads to interruptions in the operation of the apparatus. The automation starts to turn off the boiler. The problem is that this cannot be called a breakdown and it will not be possible to eliminate it.

Any malfunction of the gas boiler must be dealt with by a specialist. However, the opportunity to use the services of a master is not always there, and breakdowns are trivial... Let's consider the problems that can be solved on our own.

Usually the smell of gas appears when it leaks from the threaded connection of the supply hose... If there is a smell in the room where the boiler is installed, you need to open the window and turn off the boiler... Then follow the instructions:

1. Prepare the necessary things: soap solution, FUM tape, open-end wrench or adjustable wrench.
2. To apply mortar on all threaded connections. If bubbles begin to inflate, the leak has been found.
3. Close the gas valve.
4. Key expand the connection. Rewind on the external thread of the FUM tape and collect everything back.
5. Reapply solution and restart the gas supply.
6. If the leak has been repaired and the gas smell has disappeared, remove leftovers solution.

Attention! When it was not possible to find the leak, turn off the gas, call a specialist.

If during the operation of the boiler the sound emitted by the turbine has disappeared or has decreased - indicates a malfunction of the blowdown fan. For repair you will need: screwdriver, new bearing, cloth, grease.

1. Necessary turn off boiler and turn off the gas.
2. Remove the turbine.
3. With a rag to clear with turbine blades dust and carbon deposits.
4. Inspect Electric Coil fan for blackening. If everything is in order, move on or replace the fan.
5. Disassemble the fan housing. Inside the turbine shaft is installed bearing, his needs to be replaced. Some fans have sleeve instead of a bearing. In this case, her need to be lubricated.

The turbine may also not work due to undervoltage or malfunction of the control board. The first is eliminated with the help of a stabilizer, but the second only by calling a specialist.

Chimney problems arise only at boilers floor type... This is due to its size and vertical position. Hinged devices do not need to clean the chimney.

Chimney consisting from metal parts, cleaned with a metal brush. It must be disassembled and the accumulated soot removed mechanically. Whole the chimney is cleaned with special vacuum cleaners or chemicals. But for this you need to call a professional.

Photo 2. Three ways of arranging a chimney for a floor-standing gas boiler. The first option is the hardest to clean.

Boiler overheating is associated with contamination of the heat exchanger... To clean the device you will need: special hydrochloric acid solution, adjustable wrench, FUM tape, metal brush. Then follow the instructions:

1. Turn off the boiler, shut off gas and water.
2. Remove heat exchangerusing an adjustable wrench.
3. Clear it with a brush.
4. Through the pipe pour over into the heat exchanger acid solution... If foam appears, it means there is a lot of scale inside.
5. Pour out solution and repeat procedure.
6. Rinse.
7. Install back, beforehand wrapping all threaded connections with FUM tape.

Problems usually arise with combustion electrode. If the flame of the burner goes out after a few seconds, and the boiler gives an error, then the problem is in the combustion sensor. We turn off the boiler, turn off the gas.

To repair the electrode, you will need sandpaperwith the help of which the probe probes are cleanedwithout removing it. If the breakage remains, the sensor changes.

Exists two problemswhich lead to spontaneous boiler shutdown. The combustion sensor is broken or chimney clogged... The repair of both faults is described above in the article.

Watch the video, which tells about the malfunctions that occur during the operation of the boiler.

Most boiler breakdowns are repaired on their own, but this does not mean that you need to neglect the help of a specialist. Gas equipment is potentially life-threatening.

And also do not forget about maintenance... Cleaning the heat exchanger and chimney will save you from possible breakdowns.

The circulation pump is a frequent element of the individual heating system in your own homes. Such a device allows you to efficiently drive the coolant along a closed loop, thereby ensuring a constant temperature in all sections of the heating system and the complete absence of air jams in the same place. But even with the most reliable equipment, sometimes there are troubles in the form of malfunctions. And therefore, sometimes it is necessary to repair the circulation pump in order to return the home heating system to its original efficiency.

It is noteworthy that, despite the variety of the model range of circulation pumps, the principle of their operation and maintenance is the same for all devices. Therefore, in this material, we will consider options in which you can avoid the services of professional specialists in the service center and repair the circulation pump with your own hands.

In order to understand the principle of repairing pumping equipment, it is necessary to thoroughly understand its structure. Such knowledge will help to identify faults in the mechanism many times faster and eliminate them.

So, the device of a standard circulation pump for heating systems is as follows:

• A large, horizontally elongated steel case, in which all the working units of the system are located. In addition to steel, durable aluminum alloy or stainless steel can be used for the unit body.
• The housing houses a powerful electric motor and rotor.
• Here, on the rotor, an impeller with blades is fixed, which are bent in the opposite direction from the movement of the wheel. Typically, this pump element is made from durable polymers.

Important: the impeller in the pump can be positioned both horizontally and vertically, depending on the model. In this case, it is necessary to install the unit in such a way that the impeller is parallel to the pipeline.

At the moment the pump is turned on, water in the heating system (in a closed loop) is drawn into the inlet under the influence of the rotation of the impeller wheel. Due to the action of centrifugal force, the water that has entered the chamber is pressed against the walls of the working chamber and pushed out (into the outlet). Following this, the pressure in the chamber drops, which contributes to a new injection of water into the pump reservoir.

Thus, in the course of a continuous pump operation cycle, the heating system can be in a state of a constant set temperature, which significantly reduces the cost of fuel or electrical energy consumption for heating water.

Important: the circulation pump is capable of processing water up to 95 degrees Celsius, which makes its use even more justified in individual heating systems. But it is not recommended to constantly drive water of this temperature through the pipes. This will negatively affect the durability of the equipment.

To carry out a high-quality repair of the circulation pump, it will be useful to learn about the types of such equipment. So, there are two types of devices for working with water in a closed loop:

• Wet rotor mechanisms;
• Dry rotor pumps.

In the first case, the units are designed for constant contact of the rotor with the pumped liquid. As a result of this design, natural cooling and lubrication of all pump elements rubbing against each other occurs.The pump with a wet rotor must only be installed in a horizontal position so that the rotor is always in contact with water. A device of this type is distinguished by a low noise level during operation and a more affordable price. In addition, wet rotor pumps are easier to service and maintain.

Dry rotor units. Here the rotor is housed in a separate dry chamber. In this case, the torque is transmitted to the rotor thanks to a special clutch. It is worth noting that pumps of the circulation type with a dry rotor have greater power and performance, in contrast to their "wet" counterparts. But at the same time, they differ in a more complex device, which means they require more professionalism in identifying the causes of the malfunction and carrying out subsequent repairs.

Important: pumps with a dry rotor, unlike water supply units, can run dry. Only the load on the drive will be colossal, which will lead to quick wear of the equipment.

It is worth noting such an important point that all circulation units by the type of housing design can be divided into monoblock devices and console ones. The first ones have a single block-body, in which all the working units are located. The second consists of two blocks, each of which is intended for specific work nodes.

To be on the safe side and avoid damage to rather expensive pumping equipment, it is recommended to adhere to some basic rules for operating this type of equipment:

• Do not allow the pump to turn on without the presence of a coolant in a closed loop. That is, if there is no water in the pipes of the heating system, then you should not "torment" the pump. So you provoke a quick breakdown of the equipment.
• It is advisable to always maintain the required volume of heating water in the pipes. Otherwise, the pump will work for wear and tear, both in case of excess water volume, and in case of its shortage. For example, if a pump can distill an amount of water from 5 to 105 liters, then the need to work with volumes from 3 to 103 liters will already greatly wear out the working units of the unit, which will lead to its failure.
• In case of prolonged downtime of the pump (during the non-heating season), it is necessary to run the unit in the operating position for at least 15 minutes once a month. This will avoid oxidation of all movable parts of the pump unit.
• Try not to exceed the temperature of the coolant above 65 degrees Celsius. A higher indicator will negatively affect the working and movable parts of the structure.
• When doing this, check the pump housing more often for leaks. If even the slightest leak is observed somewhere, you should immediately identify the malfunction and carry out maintenance on the pump.

Also, to protect the pumping equipment from a sudden failure, it is recommended to carry out preventive maintenance of the unit, which will include the following actions:

So, if, nevertheless, trouble happened to your circulation pump, and it refuses to work, then we will try to repair the unit with our own hands.

Important: but if you are not sure of your abilities or do not have the appropriate tool at hand, then it is better to contact a specialized center.

The reasons may be the following:

• The presence of a foreign object in the impeller area;
• The rotor shaft is oxidized due to prolonged downtime of the unit;
• Disruption of the power supply to the terminals of the mechanism.

In the first case, you need to carefully remove the pump from the heating system and unscrew the housing in the area of ​​the impeller. If a foreign object is found, remove it and turn the shaft by hand. When assembling the pump in the reverse order, a reliable filter must be installed on the nozzle.

If oxidation does take place, then it is well cleaned, all movable elements of the working unit are lubricated and the pump is assembled in the reverse order.

If the problem is in the quality of the power supply, then you will have to check the voltage with a tester. First, in all sections of the cable and if a break or malfunction is detected, completely replace the last one. Then, if the cable is okay, check the voltage at the terminals. If the tester shows infinity, a short circuit has occurred. If it shows less voltage, then there is a winding breakage. In both cases, the terminals are replaced.

This can happen if there is no voltage in the network. Using a tester, check the voltage and, if necessary, correct the problem.

By the way, it is recommended to protect the pump from changes in the network by installing a reliable stabilizer. Such a move will also protect the pump from burning the fuse, which fails as a result of constant pressure drops in the network.

In the first case, you will have to disassemble the pump and check it for scale. If found, limescale is removed and all joints between the rotor and stator are lubricated.

If there is no scale, then check the tightness of the fuse on the unit. Remove it and clean all clamps thoroughly. Here it is worth checking the correctness of the connection of all wires in the terminal box in phases.

The reason for this is the presence of air in a closed circuit. It is necessary to release all air masses from the pipes, and mount a special unit in the upper part of the pipeline to prevent the formation of air pockets.

Wear on the impeller bearing can also be a cause. In this case, you need to disassemble the unit housing, check the bearing and replace it if necessary.

Most likely, the point is insufficient pressure in the system. It is necessary to add water to the pipes or increase the pressure in the area of ​​the pump inlet.

Here it is worth checking the direction of rotation of the working unit in the pump housing. If the wheel does not spin correctly, then, probably, a mistake was made when connecting the device to the terminals in phases in the case of using a three-phase network.

Another reason for a decrease in head can be a too high viscosity of the coolant. Here, the impeller experiences a lot of resistance and does not cope with the tasks set. You will have to check the condition of the strainer and, if necessary, clean it. It is also useful to check the cross-section of the pipes of the inlet and outlet openings and, if necessary, set the correct parameters for the operation of the pump.

When starting the pump again during the season, be sure to check the tightness of the entire system, the absence of extraneous noise in the operation of the pump and the presence of grease at the mating points of the housing.

If you still have to repair the pump, then prepare a bypass. This is a section of the bypass pipe that will close the circuit during repair work.

Important: it is not recommended to repair the pump by weight by disconnecting it from one of the nozzles. The heating pipe may break, especially if it is plastic.

If you have to open the pump casing, and the bolts are stubborn, then you can use a special tool called "liquid wrenches". It must be applied to the fasteners and after a while the bolt will succumb to the influence of the screwdriver.

And the most important thing: do not open the pump yourself if its warranty period has not yet expired. It is better to contact the service center in this case. In addition, in difficult cases, it may be cheaper to buy a new pump than to find components or parts for it.

A modern gas boiler is a complex device consisting of both mechanical elements and electronic equipment. Therefore, not in all cases can you figure out how to repair a gas boiler yourself.

However, if an element that is not directly related to the gas supply breaks down, then with minimal skills, it is possible to eliminate the malfunction without calling a specialist.How to do this is described in detail in the article.

A typical gas boiler consists of many elements, which can basically be grouped into 3 groups:

1. Burner.
2. Blocks providing safety.
3. A heat exchange unit equipped with several additional devices, which include a fan, a circulation pump and many others.

The structure of this mechanism can be simplified as follows.

But if you detail the picture, you can find about 2 dozen different elements in the device.

The main danger during repairs is a possible gas leak. This can happen due to improper repair, dismantling or installation of equipment that is associated with the fuel supply.

Therefore, it is better to entrust the repair of these parts of the structure to a specialist. Also, do not troubleshoot the electronic equipment of gas boilers on your own. Automation is a specific device, therefore, without appropriate qualifications, it is almost impossible to correctly carry out restoration work and repair such equipment yourself.

All other elements can be repaired by yourself, for example:

1. Heat exchanger flushing performed manually (for this, the unit is dismantled, after which it must be correctly put in place). It is possible to carry out these works without dismantling - using pumps.
2. Chimney cleaning will be needed in cases where there is a problem with traction (mechanical or chemical removal of blockages is performed).
3. Fan repair pressurization by lubricating its bearings with technical oil.

In fact, it is possible to repair a gas boiler on your own only in those cases when it comes to mechanical damage or blockages that can be easily identified visually (or by smell).

The rest of the breakdowns are considered more serious, therefore they are eliminated with the help of a specialist, and not with your own hands.

Before figuring out how to repair a gas boiler with your own hands, it is useful to understand exactly why malfunctions occur. Correct understanding of the reasons will help to avoid the problem in the future. Practice shows that 4 harmful factors are most often affected:

• Electricity drops - this problem is especially relevant in remote settlements and villages. Modern equipment is necessarily equipped with stabilizers, as well as energy storage devices, which ensure the operation of the device for a short time even after the source is turned off. Therefore, if there are no such devices, you should purchase them in advance.

• Poor quality water - this problem arises in cases where the equipment is used not only for heating, but also for obtaining hot water for domestic purposes (double-circuit gas boiler). The equipment is not damaged by the water itself, but by the presence of salts in it, which increase the hardness. If the concentration of these insoluble substances is high enough, it can lead to equipment wear in as little as 1-2 seasons. Therefore, it is necessary to take care of the installation of filters that purify water.

• Installation errors can lead to rather serious consequences, including fatal breakdowns, failure of all equipment. Therefore, this work can only be entrusted to qualified specialists.
• Finally, a role can also be played by frosty winters... Usually, during such a period, the neighbors turn on the equipment at full capacity, and in this mode it works for a long time. As a result, the pressure in the gas pipeline system drops significantly, and the boilers begin to work largely in vain. At this point, you can use equipment that runs on a different fuel (for example, diesel). It makes sense to purchase it if the region has long, harsh winters.

If you are not sure what is faulty, it is strictly forbidden to start repairing the gas boiler yourself, since this carries a potential danger. Correct diagnostics is the most important requirement for work, especially if they are carried out independently.

In modern devices, breakdowns are diagnosed by electronic systems (sensors) that show the temperature and other important indicators. If a serious malfunction is detected, the system simply turns off the gas boiler in order to avoid unwanted, dangerous consequences.

In other cases, it is possible to detect a breakdown on your own only with the help of the senses:

• visually;
• by smell (gas leak);
• by the sound of the equipment;
• to the touch.

First of all, you need to refer to the instructions. Even if the original version is lost, it can be easily restored by downloading the desired brochure from open Internet sources. Almost all instructions have a section and cards describing the most common malfunctions, as well as ways to diagnose and eliminate them.

Such short tutorials describe in detail what signals the automatic display system gives in case of certain malfunctions:

• blinking of lamps in a certain mode (fast, slow) and in a certain color (red, yellow, green);
• continuous burning of a light bulb;
• the display shows a specific error code (usually a two-digit number).

Even if repaired on one's own the gas boiler does not work, you still need to print the instructions specifically for this model. A specialist called at home should also familiarize himself with the features of the mechanism, including with the help of a brochure from the manufacturer.

The most common breakdowns of a gas boiler are described in the table.

Modern gas boilers are quite sophisticated technological equipment. With proper care and proper handling, the gas boiler will serve for a long time without any interruptions. However, even the most expensive and functional equipment has its own resource, after the exhaustion of which all sorts of malfunctions begin to appear.

DIY gas boiler repair

Knowing the main causes of malfunctions and the procedure for eliminating them, you can repair your gas boiler with your own hands. This is a very painstaking, responsible, but in most cases relatively easy job.

Content of step-by-step instructions:

First of all, it is necessary to establish why any malfunctions may occur in the operation of gas heating boilers. A number of different factors can lead to problems.

Modern gas boilers are equipped with various automation equipment. These funds, in turn, are powered by electricity. And, despite the fact that the 21st century is already in the yard and systems for the use of alternative energy sources are being actively developed around the world, the problem of stability of power grids remains relevant for many regions, especially for remote villages and all kinds of summer cottages.

A sudden power outage or a strong surge in electricity is one of the main enemies of any modern gas boiler.

To avoid all the accompanying troubles, buy a quality stabilizer in advance. Do not spare money to buy this device - there is little sense from cheap models, so it is better to immediately allocate funds to purchase a good stabilizer from a well-known manufacturer. Be sure that in the event of a breakdown of the automation, you will spend much more money on its repair and replacement.

At home, wall-mounted models of gas boilers are often used. Such devices are simultaneously responsible for both space heating and hot water preparation.

The design of wall-hung boilers includes a flow-through heat exchanger.Low-quality hard water with various impurities is the main enemy of the heat exchanger of a gas boiler. At the same time, under the influence of low-quality water, the heat exchanger can fail in just one season.

Install special filters to prevent such damage. The best option is a complete water purification system. With it, your boiler will work as long as possible, and using purified water is much safer for health.

Any knowledgeable person will tell you: only qualified specialists should be engaged in the installation and piping of gas heating equipment.

Even the slightest mistakes at the stages of installation and connection of equipment can lead to irreversible consequences. For example, an incorrectly executed piping in the case of a cast-iron gas boiler more powerful than 50 kW will lead to the fact that the unit will simply split at low temperatures.

If you are not an experienced gas operator, entrust the boiler installation to professionals.

Therefore, if you are not an experienced gas operator, entrust the installation of the boiler to professionals - this way you will save yourself from many problems in the future.

Unfavorable weather conditions can also lead to many different problems. In frosty winters, people turn on the heating at almost full capacity. This leads to a significant decrease in pressure in the gas pipeline system. As a result, boilers cannot fully realize their potential.

You will not be able to solve this problem on your own - you still cannot explain to your neighbors that by their actions they only aggravate the situation. As a solution to the problem, you can install an additional boiler that runs on a different fuel.

Automatic solid fuel coal-fired boiler with hopper

A modern gas boiler is a complex and potentially dangerous system. The main danger of such units is the risk of a gas explosion in the event of improper handling of the equipment or untimely elimination of various malfunctions.

Various kinds of automation are responsible for maintaining the operation of the gas boiler at an optimal level. An inexperienced user is often unable to understand its device. Therefore, it is better to immediately invite specialists to troubleshoot serious problems.

On your own, you can try to eliminate only visible damage and various contaminants that have led to the failure of the pipe, chimney and other parts of the boiler.

Typical malfunctions of gas boilers

There are a number of typical problems that you can fix yourself in most cases. Problems will also be listed, in the event of which you can only protect yourself before the arrival of a specialist.

If a distinct smell of gas or smoke appears in the room, immediately turn off the boiler and leave the room, opening it for ventilation.

Gas boiler functionality diagram

Call a professional immediately. Trying to solve the gas leak problem on your own without the necessary skills is extremely dangerous and unreasonable.

If the flame sensor or the gas supply pipe breaks down, turn off the boiler, close all gas valves and let the unit cool down completely.

Return to the area after a while to check for the smell of gas. If everything is in order with the draft, try to turn on the boiler again. If there is no thrust, immediately call a repairman.

Overheating is one of the most common problems in modern gas boilers. The reason for this may be a malfunction of the automation equipment or a clogged heat exchanger.

It is impossible to cope with the repair of automation without the appropriate knowledge.

You can also clean the heat exchanger with your own hands. The most common materials for the manufacture of heat exchangers are copper and stainless steel. There is usually no problem cleaning them, but be extremely careful anyway.

Primary heat exchanger for wall mounted gas boiler Beretta

According to the recommendations of the manufacturers, the heat exchangers must be cleaned of soot every few years (each manufacturer indicates a specific interval in the instructions for their equipment).

Primary heat exchanger (heating circuit) of the gas boiler Rinnai SMF

To clean the heat exchanger, simply remove it and clean it thoroughly with a metal brush. In the case of a copper heat exchanger, it is best to replace the brush with a metal sponge used for washing dishes.

The problematic place of fans is their bearings. If the fan of your boiler stops developing the set number of revolutions, try to eliminate the problem as soon as possible.

Fan (3311806000) for Daewoo gas boiler

To do this, remove the back of the fan, take out the stator and lubricate the bearings. Machine oil is fine for lubrication, but it is best to use a higher quality carbon compound with heat-resistant properties if possible.

Fan RLA97 (Aa10020004) for gas boiler Electrolux

Also, an interturn short circuit can lead to problems with the fan. Only a specialist can cope with the elimination of this malfunction. Return the stator for repair to replace the winding, or immediately replace the faulty unit with a new device.

Gas boiler chimney diagram

Often, excessive clogging of the coaxial chimney leads to the appearance of various malfunctions in the operation of a gas heating boiler.

Remove the chimney and thoroughly clean all of its components from soot. So you will not only return the previous level of efficiency of the unit, but also significantly increase the efficiency of the boiler.

The boiler can shut down spontaneously for several reasons. This is usually due to a defective combustion sensor. This problem, in turn, most often leads to contamination of the gas pipe.

Draft sensor 87 ° C for Thermona boiler

Remove the branch pipe, rinse it thoroughly with water, clean it with a cotton swab and blow it off the remaining moisture. Put the pipe back in place and try to turn on the boiler. If it doesn't help, call the wizard.

No wonder they say: the best repair is prevention. Gas boilers require annual preventive maintenance, which must be carried out before the start of the heating season.

Whenever possible, maintenance should be carried out twice a year, before and after the heating season.

Check all the previously discussed boiler elements for their serviceability. Follow the preventive maintenance recommendations given by the manufacturer in the instructions specific to your boiler. Eliminate any malfunctions that arise in time, if possible.

Remember! The gas boiler is a potentially hazardous equipment. Incorrect use and untimely troubleshooting can lead to irreparable consequences. Therefore, be careful and do not engage in any repair work if you doubt your ability and correctness of action. Otherwise, follow the instructions provided.