Baxi boiler DIY repair

Gas boilers Baxi (Baxi) is an Italian line of high-quality heating equipment designed to create and maintain an optimal temperature in the room at a comfortable level. The equipment of this brand is distinguished by environmental safety, low noise level, long service life and low fuel consumption.

In addition, Baxi gas boilers are inexpensive relative to their main competitors. Ease of use is also considered one of the clear advantages of the devices of the Italian brand. Moreover, Baxi models are able to please the user with high performance.

What else makes this technique so popular in the European and domestic markets? Its very important advantage is its ability to operate at constant pressure drops in the system. Baxi boilers are designed for unstable gas or heating medium supply. And since this problem is relevant for most regions of our country, in Russia the technique of the Italian brand is in special demand.

Baxi boilers are versatile equipment capable of operating on natural and liquefied gas. This allows you to provide heat even in those houses that are located in non-gasified areas. For example, you can install such a boiler in your country house, being fully confident that you will be comfortable in the house even at very low temperatures outside the window.

The design is also an important plus of the Baxi equipment. The boilers fit perfectly into the living space and are in perfect harmony with almost any stylistic design. Minimalistic appearance and ergonomic design make this equipment very popular.

Despite the high reliability and durability of the Italian brand equipment, it may one day fail. And although this happens quite rarely, repairing Baxi boilers with the involvement of a specialist will not be cheap. Firstly, the cost of the services of a professional who understands gas combustion technology is usually quite high. Secondly, Baxi components will cost a lot, which must also be taken into account.

But there is an excellent alternative for those who want to save money - do-it-yourself repair of Baksi boilers. If you are confident in your own skills and do not want to seek help from third parties, below we will describe all the nuances that you may encounter in the process of repairing the equipment of the Italian brand.

Let's imagine that for some reason your Baxi heating unit is out of order. The first thing you need to do is find out why the unit stopped functioning. In most cases, the built-in automation will give you some error that will point you to the cause of the breakdown. The manufacturer supplies a manual with the boiler, which details all error codes and their interpretation.

After identifying a breakdown, it is very important to choose the correct components. To do this, it is necessary to find out the series and model of the boiler. The most popular of them are the Baxi Luna, Slim, Main, Nuvola and ECO units.

Do-it-yourself repair of Baksi boilers should be undertaken, provided that you find easily removable visible causes of a malfunction and you know exactly how to make repairs. Otherwise, if you are not sure that you have sufficient experience in handling such devices, it makes sense to contact a qualified technician.

What kind of breakdowns are most characteristic of the Italian brand's equipment? Let's list the most common ones:

• Lack of ignition;
• Stopping the burner;
• The presence of pops in the firebox;
• Overheating of the boiler;
• Insufficiently high coolant temperature;
• Noisy equipment operation;
• Failure of one of the sensors or automation elements.

There are many possible reasons why a Baksi gas boiler breaks down. One of the most common is the ingress of moisture into the boiler. In addition, a low-quality coolant affects the stability of the equipment. Unfortunately, most of Russia suffers from this, which is why from time to time the user will still have to resort to repairs. It should be borne in mind that Baksi is a rather hardy technique, and an aggressive operating mode practically does not affect its operation.

Often, the boiler breaks down when there are sudden pressure drops in the gas supply system. At the same time, an automatic safety system is triggered, but its presence does not exclude the occurrence of failures in the operation of equipment. In addition, another problem is urgent for Russia, which can disable equipment. We are talking about the instability of the voltage in the mains.

Very often, the boiler wears out quickly and, as a result, breaks down due to the fact that it was incorrectly installed. If you are not sure that you can independently mount the equipment in accordance with the manufacturer's technical requirements, then it is better to entrust this matter to professionals. This will save you a lot in the future.

Below we present typical malfunctions that occur during the operation of Baksi equipment, and methods for their prompt elimination.

Often, the boiler does not start due to the fact that the installers have incorrectly connected the phase and zero. Because of this, air accumulates in the system, and the boiler refuses to turn on.

Often, the cause of the malfunction lies in the fact that an incorrect pressure setting in the system was made. Also, a weak flame can indicate a malfunction of the gas valve module or diode bridge. To eliminate this problem, it is necessary to configure the basic parameters of the system as indicated in the equipment operation manual.

The cause of this failure in most cases is insufficiently high gas pressure in the system. In this situation, to repair the Baksi boiler, it is necessary to reduce the minimum pressure level of the incoming gas to 5 mbar, while the standard value of this parameter is 25 mbar.

In the event of such a malfunction, it is possible to repair Baxi boilers without much difficulty. To do this, it is enough to check a parameter such as the pressure at the gas valve. In most cases, the cause of the malfunction is a failure of the minimum and maximum values.

In case of this malfunction, the user must necessarily replace the board and valve.

If you have such a problem, you need to replace the sensors. In most cases, this will be sufficient.

This problem occurs due to incomplete opening of the 3-way valve or due to its complete failure. To make sure that the valve really does not work, you need to allow the system to cool down, then close the shut-off valves and start the boiler in DHW mode. In the event of a valve failure, the unit will heat the coolant in both circuits.

There may be several possible reasons for this problem. Among them:

• Low gas pressure. In this case, it is necessary to adjust the minimum level of gas pressure.
• Change in the distance from the igniter to the gas pipeline due to inaccurate transportation or installation of equipment. In this situation, you need to adjust the size of the gap to 4-5 millimeters.
• Too intense traction. To reduce the intensity, you need to use a shutter.

This problem occurs when filters are clogged, pipes or radiators are damaged. In this case, the repair of the Baxi boiler is quite affordable, by eliminating the main cause, you can easily restore the equipment to work.

Obviously, repairing Baksi boilers with your own hands is not the most difficult task. However, it should be borne in mind that unskilled intervention in the operation of the equipment can lead to additional breakdowns or, worse, to the removal of equipment from warranty service. Therefore, wishing to eliminate this or that problem, you need to make sure that you are able to do it yourself. Otherwise, it is wiser to contact the professional craftsmen of the Baksi service center.

Baxi are gas boilers from an Italian manufacturer. Despite the fact that they are distinguished by a high degree of reliability and durability of operation, from time to time some of them fail.

If your boiler is malfunctioning or does not work at all, the first step is to identify the cause of the breakdown. In most cases, built-in automation will come to the rescue, which will give error code, and in the operating manual supplied by the manufacturer, all error codes and their interpretation are described in detail. When performing diagnostics, make sure that there is gas, electricity, check the water flow. Carefully inspect the internal and external structure in order to exclude the possibility of technical malfunctions.

Breakdowns can be as follows:

• the boiler goes out or does not turn on at all;
• ignition becomes impossible;
• pops are heard in the combustion chamber;
• the boiler overheats;
• the maximum heating temperature of the coolant decreases;
• an uncharacteristic noise is emitted during the operation of the boiler;
• some sensor or system element fails.
• the pressure in the heating system drops

The reasons for the breakdown may be the following:

• ingress of moisture into the boiler;
• insufficient water quality;
• there was a drop or drop in gas pressure;
• voltage drop in the power grid;
• improperly installed heating system.
• the heat exchanger has burned out

You should start by disconnecting it from the mains, turn off the gas valve at the entrance to the boiler. After that, you must wait until the boiler has completely cooled down.

In order to start repairing a gas boiler, it must be disassembled, the algorithm is as follows:

1. After carefully studying the diagram, you can start removing the front cover that protects the inside of the boiler. To do this, you will need to unscrew 4 bolts, this should not be a problem.
2. Unscrew the protection from the combustion chamber. At this stage, you will need a vacuum cleaner, clean the combustion chamber well from dust and debris.
3. After unscrewing two screws and removing the wires from the terminals, remove the fan.
4. Wipe the burner with nozzles with a damp cloth, if you see clogged nozzles, you can use a brush, but not a metal one, so as not to damage or break the burner elements.
5. Now you need to remove the heat exchanger, it's quite simple. Disconnect all sensors. Removing the clips from the tubes and lightly shaking raise the heat exchanger to the top.

When the boiler is completely disassembled, you can start repairing it or carrying out preventive maintenance.

Often, replacing the heat exchanger will help solve the malfunctioning problem.

Flushing should be done both inside and outside.

To do this, pour clean water into the basin, add special agents to it that help fight scale, rust - put the heat exchanger in it for a while. After this time, using pressurized water, remove limescale and rust residues from the inside and outside of the heat exchanger.

After completing all the procedures described, you can start assembling the gas boiler. Follow the described algorithm in reverse order. As seen baxi repair even an inexperienced master can do it, and you can independently diagnose, repair your gas boiler, which will last you for quite some time.

In the absence of experience in handling the units or in the absence of special tools, it is better to entrust the boiler repair to a competent foreman.

Italian gas boilers Baxi occupy a solid place in the heating equipment market due to their high efficiency, stable operation. even in adverse conditions and thoughtful stylish design... But, despite their high reliability, sometimes in the work of Baksi boilers malfunctions occurcaused by violation of operating conditions or failure of individual elements of the boiler. Most often, you can eliminate them yourself, without resorting to calling specialists.

The Baksi line of gas boilers includes a number of models that differ in volume, type of installation, and functionality. Moreover, the principle of their work is generally similar.

The most popular boiler models:

• Baxi Luna
• Baxi Slim
• Baxi Main four
• Baxi Main 24 fi (Baxi Mine 24 fi);
• Baxi Nuvola
• Baxi EKO four

By installation type gas boilers are divided into wall and floor.

Wall heater fixed using special brackets in any convenient place, which makes wall models very popular. Closed-chamber chambers such as the Baxi Main 24 fi offer increased efficiency and environmental friendliness in a small footprint.

Coolant volume in the heat exchanger depends on the model, in the most powerful it reaches 80 liters. By functionality model can be single-circuit - for heating, or double-circuit - in addition to the heating system, they also supply the DHW circuit.

Work they can both on natural gas and liquefied, from cylinders, which makes it possible to install them in non-gasified areas. Boilers completely volatile and require an AC voltage connection.

The principle of operation of gas heating equipment:

1. The sensors analyze the temperature in the room, and when the minimum value is reached, they give a signal to turn on the circulation pump.
2. The pump turns on, creating a vacuum in the return pipe, while the heated water enters the heating system.
3. The microprocessor gives a signal to ignite the burner at low power, it gradually increases, and the coolant heats up to the temperature set by the user.
4. Further, the boiler operates in modulation mode - it maintains the temperature within the specified limits, turning on when it drops.

At any of these stages, a malfunction may occur, which the boiler notifies with the help of coded errors..

Possible malfunctions of the boiler Baxi Main for, Baxi Main 24 fi, Baxi Eco for:

• the burner goes out immediately after switching on or during heating (error codes e01, e04);
• the boiler cannot be ignited;
• overheating occurs (error code e02);
• the water pressure in the system drops (error code e10);
• extraneous noise is heard in the work;
• pops occur in the combustion chamber;
• the coolant does not heat up to the set temperature;
• one of the sensors fails (different error codes may appear).

The most common reasons for the appearance of certain malfunctions, according to the specialists of the service centers, can be:

• improper installation of the heating system;
• errors when connecting the boiler to the mains;
• water ingress on the board, into the burner or into the electrical part of the boiler;
• poor quality of network water or other heat carrier;
• a sharp drop in gas pressure;
• the mains voltage drops or inadmissibly increases.

The resulting malfunctions can be easily eliminated by adjusting the boiler, but sometimes it is necessary to call a specialist to replace the boiler parts.

If you are not confident in your skills in setting up gas equipment, it is better to contact a service center. Improperly performed repairs can lead to complete failure of the boiler!

When an error code appears on the boiler display, it is necessary to determine the malfunction according to the classifier attached to the operation manual... Codes, as a rule, indicate a number of malfunctions, therefore, in addition, it will be necessary to check the condition of the components and assemblies of the boiler. Some breakdowns can be fixed on your own, how to do this is described below.

This malfunction occurs when phase-dependent boilers, for example, Baxi Main or Baxi Main 24 fi, are incorrectly connected to the mains: if the "phase" and "zero" are reversed, the boiler operation is impossible due to the accumulation of air in the system. With this malfunction, an error e01 appears on the boiler display, and the coolant pressure drops.

• make the correct connection of the "phase" and "zero";
• bleed air from the system;
• add coolant;
• turn on the boiler and make sure that the e01 error has disappeared.

The "phase" can be determined using the color coding of the cable cores. If the installation is made with a single-color wire, or you doubt its correctness, then you must use a voltage indicator.

This situation is possible in several cases: when the pressure in the heating system is incorrectly set, as well as when the diode bridge or the valve responsible for the gas supply is faulty. The e01 error also appears on the scoreboard.

If the matter is in the settings, they can be corrected, guided by the instructions of the documentation for the boiler. In the event of a malfunction of the components, it may be necessary to replace them.

Error e01 is displayed on the board. The most common reason is low gas pressure in the line or incorrect setting of its lower limit. If the gas pressure is unstable and constantly drops, it is better to set the lower value to around 5 mbar.

Error e03 signals serious problems that can lead to boiler breakdown. You can fix it yourself, the reason may be:

• incorrectly mounted smoke exhaust system;
• faulty fan;
• inadmissible narrowing of chimney pipes;
• the appearance of condensation in the chimney;
• faulty pneumorel;
• lack of electrical contact between the board and the relay or the board and the fan.

In models with a closed combustion chamber, for example, Baxi Main 24 fi, the cause of the error e03 may be an incorrect parameter setting F-43.

Another malfunction that occurs when the gas valve is incorrectly set, the minimum and maximum gas pressure limits. It must be adjusted according to the instructions in the instruction manual.

Most often it occurs when the burner control board or the gas supply valve fails. Testing is required, board replacement, sometimes together with the valve.

Video: instructions for replacing the board in Baxi Main 24 fi boilers and other models

The reasons are the failure of one or more sensors. Their replacement is required, after which the boiler operation becomes stable.

Relevant for double-circuit boilers Baxi Main for, Baksi Eco for, Baksi Luna 3 Comfort and other models. The temperature in the hot water supply circuit drops sharply or gradually. The cause of the malfunction is a breakdown or incorrect operation of the three-way valve.

To be sure of its malfunction, you need to turn off the double-circuit boiler, wait for the coolant in the system to cool, then close the valves that lock the heating circuit, turn on the boiler in the DHW heating mode and check the temperature of the coolant and hot water. If the valve breaks, it will be warm in both circuits.

Specific pops in the boiler combustion chamber can appear for several reasons:

• gas pressure drops (error e01 occurs);
• the gap from the igniter to the gas pipeline does not meet the operating requirements, it must be 4-5 mm;
• the flue gas draft is too intense.

If any of these faults are detected, adjustments are made:

• change the minimum gas pressure limit by 5 mbar;
• set the correct gap;
• regulate traction with a damper.

The appearance of the e10 code on the electronic control unit of the Baxi Main 24 fi boiler or another model indicates several possible malfunctions:

• a decrease in the pressure of the coolant due to blockages, leaks, pump breakdown;
• malfunctions of the minimum pressure switch itself;
• loss of contact between the control board and the relay.

To eliminate the e10 error, you need to check the pressure in the system according to the pressure gauge on the safety group, to exclude leaks and blockages. If these measures did not help, and the e10 code does not disappear, you need to check or replace the board or the minimum pressure switch.

It can be caused not only by improper operation of the boiler, but also by the occurrence of blockages in radiators, pipes, when filters are clogged. This most often occurs when the quality of the coolant is low, which causes the deposition of rust, salts, solid inclusions.

To eliminate this malfunction, it is necessary to turn off the boiler, remove blockages and fill in a high-quality coolant in order to avoid a repetition of the breakdown in the future.

With a heavily clogged system, the temperature drops, and the boiler efficiency drops sharply, which leads to a deterioration of the microclimate in the house and excessive consumption of gas. To extend the service life boiler Baxi Main or other model, as well as to maintain high efficiency it is necessary to periodically clean the heat exchanger using a special device and cleaning liquid.

Video: flushing the Baxi Main boiler