Why the gas boiler goes out

Content:

Varieties of gas boilers
Gas boiler design
Possible malfunctions and remedies

Using a gas boiler in your home for heating is a very good and economical solution. This device is easy to install and easy to operate. However, like any equipment, the unit tends to become faulty, often it all lies in the damping of the gas burner. To find out the cause of the problem, you need to understand the types of gas boilers and their device. In this article, we will tell you why the gas boiler goes out, we will tell you what to do and how best to solve this problem.

Varieties of gas boilers

a gas boiler

These units are divided by type of installation:

outdoor;
wall.

The first type of gas boilers is more powerful, thus it can heat a large area of the room. They also have a long working life, this could be achieved through the manufacture of heating elements from metals such as steel and cast iron. However, these gas boilers require a separate room for installation and better performance.

As for the wall units, they have smaller dimensions, respectively, and the weight is also less, this allows you to mount them on the walls. This type of boilers has less power, they also have a significantly reduced service life, and they are more demanding on cleaning the coolant element, and the type of heated fluid. The advantages of these devices include their small size, which greatly simplifies the installation, without requiring a separate room, like floor-standing units.

Gas boiler design

gas boiler design

The principle of work is the same for them, they are separated only by design, there are several types:

single-circuit - mainly used for heating small rooms and residential buildings;
double-circuit - they are also capable of heating rooms, however, in addition to this, they can heat water for domestic or technical purposes.

As for the removal of fumes - gas boilers are equipped with special systems with:

natural cleaning - in this case, gas boilers are directly connected to chimneys, which are led to the top of the roof. Thus, combustion products are taken by natural draft. The combustion air is taken from the room, but the chimney must be high, at least 500 mm from the ridge of the gas boiler. Otherwise, your boiler will blow out and go out.
forced cleaning - gas heating units are connected to a coaxial chimney, this design is a "pipe in a pipe", both lead to a closed combustion chamber. Combustion products come out through one pipe, and air enters through the second, which supports combustion.

Let's move on to the circulation method.There are gas boilers dependent and not dependent on electricity. In the first case, there is an electric circulation pump in the system, which creates pressure. Also in such boilers there are many complex machines and sensors, thanks to which the process is regulated. The second ones do not need to be connected to the mains, thereby they get an advantage, and when you have no light, you can still use a gas boiler.

Possible malfunctions and solutions

boiler malfunctions

Now move on to the breakdowns of these units. Basically, the signs of a breakdown are as follows:

The gas boiler does not turn on - in this case, the problems may be as follows:

malfunctions with the burner ignition system;
lack of voltage on the gas boiler;
check the gas valve, it may be closed;
insufficient gas pressure in the gas boiler chamber;
check the burner itself, maybe it is clogged.

As for boiler repairs, it is not recommended to do it yourself (except for minor external repairs), since this unit is dangerous, and in case of violation of any element, it can lead to malfunctions. All repair measures must be carried out by specialists. As, for example, with improper cleaning of the nozzles on the burner, it can cause the light to come off and go out, which will lead to attenuation.

Gas burner dies out - the causes of this problem may be associated with:

lack of reverse thrust in the gas chamber;
malfunctions with traction sensor;
there may be poor contact with the thermocouple;
if you have an electric boiler, it is possible that voltage drops occur in the network;
there was a depressurization of the connections on the supply gas pipeline.

Draft problems are mainly found in boilers with an open waste disposal system. Today, all gas boilers are equipped with special draft sensors, which, when there is a lack of draft, automatically burn out the burner. However, if there is a lot of thrust on the contrary, this is a hi to a quick intake of already worked out gases, because of which the flames can tear off the flame from the burner - the automation in this case also shuts off the gas so that it does not go to empty after the flame has been cut off.

It is easy to determine the state of draft in a gas boiler, for this, simply bring a match into an open boiler, in cases of normal draft, the flame will burn normally, and it will be slightly directed towards the inner body of the gas boiler. If the thrust is excessive, then the flame on the match will simply go out.

gas boiler problems

Such problems arise due to a violation of the rules for constructing a chimney for the boiler, namely, insufficient height above the roof or vice versa with too high a height. The solution to the problem is quite simple - you need to find out the state of the draft, and if it is lacking, reduce the height of the chimney, and accordingly, vice versa, if there is an excess of it. It is also recommended to flush the chimney in order to give the waste products a large outlet area. Depressurization is also common, it can be found with a soap solution and patched.

The boiler does not light up in the event of a malfunction of the sensor responsible for measuring the draft - it cannot be repaired, only a complete replacement of the element is required. It is easy to identify the malfunction, it is necessary to close both terminals on the sensor, and to ignite the boiler, in cases of full functioning of the unit, replacement is required.

If the thermocouple contacts are poor, the gas burner will immediately extinguish, in this situation you can clean them yourself.

After switching on, the boiler does not pick up the temperature inside the combustion chamber - any breakdown is specific and has a reason, in this situation they can be as follows:

there is not enough air in the chamber where the gas is burning;
incorrect design of the chimney or it is simply dirty;
failure of electrical elements of the boiler system;
in case you have a dual-circuit boiler, the system for heating water will use up a large amount of electricity.

The boiler does not respond to shutdown commands - in units of automatic type, the shutdown occurs on its own when the room temperature has reached a predetermined figure according to the program. The device with which the ambient temperature is determined is called - the thermostat, it transfers data to the processor, which is built into the command board.

We told you why the gas boiler goes out, and how to fix these problems. However, do not forget that any problems other than working with the chimney must also be performed by a trained specialist with a certificate.

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Why the gas boiler goes out

Varieties of gas boilers

Gas boiler design

Possible malfunctions and solutions

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