DIY baxi boiler repair

In detail: do-it-yourself repair of baxi boilers from a real master for the site my.housecope.com.

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. Thoroughly inspect the internal and external structure in order to rule out 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:

Video (click to play).

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.
Unscrew the protection from the combustion chamber. At this stage, you will need a vacuum cleaner, well clean the combustion chamber from dust and debris.
After unscrewing two screws and removing the wires from the terminals, remove the fan.
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.
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 described procedures, 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 a long 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.

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.

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 reason, 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.

Double-circuit wall-mounted boilers "Baksi" - gas equipment for individual heating from an Italian company. They are compact, comfortable and reliable. However, malfunctions also occur in the operation of the Baksi boiler, and it is worth knowing about their elimination in advance.

The boilers of this manufacturer have many advantages. The main advantage is cost effectiveness. Their service life is long enough, and during operation they practically do not make noise. Using this heating device, you can also note the high performance and ease of use. In addition, Baksi boilers are sold at affordable prices, and representatives of all segments of the population can afford them.

Baxi manufactures metal combustion chambers for its boilers. From the outside, the part is protected by a heat-insulating layer. There is a copper heat exchanger just above the chamber. When the heated room gets warmer or colder, the thermostat turns on. Its work is automated. The thermostat sends a signal to turn on the water pump. He begins to pump water due to the creation of a vacuum in the pipes. Then warm water enters the pipeline.

Boiler power increases gradually when switched on. This happens before the water temperature rises to the required value. Then the heating mode goes into modulation mode. When the coolant cools down, the temperature sensor gives a signal to open the inlet valve. This starts the electric ignition, and the water temperature again reaches the desired mark.

If the room does not need to be additionally heated, the boiler starts operating in DHW mode. It consists in the fact that cold water enters the secondary circuit through a three-way valve, which, in turn, blocks the heating line. Gas is supplied to the burner using a special valve, and the power of the appliance gradually increases. When the water is already heated to the desired temperature, its regulation mode is activated.

Baksi boilers are good because in the event of malfunctions, it is possible to cope with the repair yourself, without resorting to calling specially trained people. True, it is acceptable to do this only if the malfunction is typical and can be eliminated according to the scheme. For those who have not had the chance to repair gas equipment, it is better not to repair Baksi boilers with their own hands, but to call a specialist. Among the typical malfunctions of the units, the following are found:

the burner does not ignite or constantly goes out;
ignition does not work;
there is a knock in the combustion chamber when the boiler is operating;
exceeding the permissible temperature inside the device;
the maximum water temperature becomes lower;
the occurrence of loud noise during operation;
breakage of temperature or pressure sensors.

The reasons for the failure of the Baksi boiler can be as follows:

water ingress into the boiler;

insufficient quality of the applied coolant;

weakening or sudden change in gas pressure;

power surge in the network;

initial inaccuracies in equipment installation.

The following points can be used as instructions for troubleshooting the Baksi gas boiler:

When malfunctions occur in the double-circuit wall-mounted gas boiler "Baksi", an error code is displayed on its electronic display, which can mean one of two things: either blocking the operation of the heating device, or turning on the standby mode.

In the first case, it is necessary to manually restart the boiler. The device can be blocked at the moment of detection of problems affecting the basic parts of the system, which can harm not only the equipment, but also the health of its owner. Such errors include excessive heating of the boiler, insufficient or reverse draft, as well as its absence. If no gas is supplied to the storage tank, the equipment is also blocked. Sometimes this problem clears up by itself, and then the device turns on the automatic startup mode.

Code E01 appears on the display when the sensor, which monitors the operation of the burner, reacts. This error can be caused by a number of reasons:

gas is no longer supplied to the burner;
there is no correspondence between zero and phase;
the sensor is disabled;
the sensor needs cleaning or repair;
malfunction in the igniting device;
the gas supply valve is out of order;
the electronic board does not work;
there is not enough air to support the flame;
there is not enough gas pressure for combustion.

Having seen such a signal on the display, you first need to check if the flame sensor is working correctly. Then see if gas is supplied to the device. If there are no problems, press the R button or switch the toggle switch to neutral mode, which is also indicated by this letter.

If the sensor is triggered unintentionally, the boiler will continue to work as usual. In case of a repetition of the error, it is better to ask for advice from a gas equipment repairman. This fault code indicates a problem in the microcircuits, and trying to fix the problem yourself may lead to undesirable results.

E10 code refers to sensors that monitor the functioning of pumps and regulate the water cycle in the system. Such a cipher can diagnose the following problems:

decreased pressure;
the conductivity between the relay and the board is broken;
the pressure switch is not functioning properly;
malfunctions in the pump sensor;
the pump itself needs to be repaired;
the heat exchanger is dirty.

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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, replacement of the board, 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 make 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 error e10, you need to check the pressure in the system according to the pressure gauge on the safety group, 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, and 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

In order to choose the correct spare parts for the boiler after an identified breakdown, you need to know its series and model. The most common: Baxi Luna (Comfort, Comfort Combi, Silver Space), ECO, Nuvola (come with a stainless steel boiler), Slim, Main.

The volume of boilers ranges from super compact to 80 liters. They can be floor-mounted or wall-mounted. Structurally, boilers are divided into: single-circuit and double-circuit.The combustion chamber of baxi boilers is made of metal. The outside is covered with a layer of thermal insulation. A copper heat exchanger is located above the combustion chamber, and the burner is located under the combustion chamber. Image - DIY baxi boiler repair

When the air temperature in the room changes, the thermostat starts automatically, transmitting a signal to turn on the pump, which creates a vacuum in the return pipe. In this case, the heated water begins to flow into the supply line of the heating system under a pressure of no more than 0.45 bar (in the event of an increase in pressure, the microprocessor sends a signal to the relay, the contacts close, and the burner ignites). Boiler operation starts at low power, which gradually increases until the temperature of the heating medium reaches the set temperature. After that, the heating mode is changed to modulation mode.As soon as the temperature of the coolant deviates from the set value towards a decrease, a signal is received from the temperature sensor, the inlet fuel valve opens, the burner ignites again and heats up the water.