Home » Various error codes
07/12/2021 Category: Various error codes Author: Zhitnov Andrey Semenovich
https://baltgazservice. ru/stati/gazovye-kotly/kotel-baxi-oshibka-e03/ https://thermo-lider. ru/gazovye-kotly/oshibki-gazovykh-kotlov/oshibki-gazovykh-kotlov-baxi/oshibka-e03-gazovykh-kotlov-baxi/ https://fixbroken. ru/oshibka-e03-kotla-baksi/
- What does the baxi e03 error tell the user?
- What could be the reasons for the error?
- Error e03. Checking chimneys.
- Checking fan operation (for turbocharged models)
- BAXI e03 error due to a faulty traction sensor (pressostat)
- BAXI error E 03. Condensation in tubes
- Damage to the Venturi device
- Error E03 if the control board is faulty
- Error e03 boiler Baxi 5
- Decoding error e03 Baxi
- Where to begin
- Chimney
- Venturi device and sensor
- Recommendation
- Fan (supercharged models)
- Check what
- Probable Causes
- Lack of lubrication
- Electrical testing
- Electronic board
Baxi error code e03
When inspecting chimneys, the first thing to do is inspect the chimneys. Often the head of a coaxial chimney is equipped with a fine mesh, which prevents large elements from entering. In the cold season, when frost forms on the mesh, the air intake completely stops.
In the instructions you can see the rules for installing chimney pipes for various buildings. If the chimneys are installed incorrectly in different weather conditions, the boiler may stop working. Reasons could be long pipe sections or lack of slope.
The formation of icicles and ice happens quite often, so it is recommended that when designing the location of a gas boiler, you should take into account the wind rose for a particular region.
In the warm season, the diameter of the chimney may decrease due to cobwebs or nests made by birds. If no problems were identified when inspecting the outlet pipe and air intake pipe, then you can proceed to consider the following reasons for the appearance of error code e03.
How to check the fan operation in a Baxi turbocharged boiler
In order to check the quality of the fan operation, it is necessary to remove the front cover. You should first check whether the device rotates. If the fan does not rotate, then you need to turn off the gas boiler and try to turn the blades yourself. This way, you can eliminate the possibility of jamming and check how freely they rotate. Rotation must be carried out without interference or extraneous sounds.
Usually the following problems occur: dirt builds up on the internal blades, the lubricant in the fan axle bearings runs out, or the axle bushing wears out.
In Baxi ecofour gas boilers, you can remove the fan along with the top cover of the combustion chamber. If necessary, clean the turbine blades from dirt. The bearing can be lubricated with a special high-temperature grease. If the fan operates for a long time with dirt on the blades, the axle bushing may break. In this case, it needs to be replaced.
If the gas boiler is working, but the fan does not start, then you need to check the reliability of the connection of the device to the board and the presence of voltage at the terminals. One of the common causes is a malfunction of the relay on the board, which is responsible for turning on the turbine. In such a situation, an internal board error is detected by the diagnostic system. If no faults were found, then you can move on to the next step.
Baxi gas boilers have a special black outlet, which is located at the fan outlet, for service specialists. The vacuum created can be measured with a special device. This value should be 45 mbar.
How to run self-diagnosis
A special launch of self-diagnosis of the Baxi boiler is impossible, since this system turns on immediately with the unit and operates in continuous mode. The system is formed by a network of sensors located in all main components of the boiler.
They constantly monitor the situation and give a signal immediately if any failures or failures of any element occur . It is sent to the control board, which reacts to changes in sensor readings by generating an error code displayed on the boiler display and blocks the operation of the device until the problem is resolved.
IMPORTANT!
The presence of a self-diagnosis system is a great advantage of the equipment, since it makes it possible to avoid serious accidents, allowing you to protect an expensive installation from destruction or failure. The owner of the installation is spared the need to constantly check the condition of the boiler; smart and advanced automation does everything for him .
Error e03 in a Baxi gas boiler due to a faulty draft sensor
The draft sensor is a gray box that is connected to the fan by tubes. In the normal state, the contacts are open, but close when a vacuum appears, which is created in the outlet pipe. If there is no vacuum or it is insufficient, then the boiler stops and it will not be possible to start it.
In order to eliminate a malfunction of the pneumatic relay, you can perform the following actions: when the equipment is started, the fan begins to operate, after which a signal to the control unit should close the contacts of the pressure switch relay, therefore, you can close them yourself to simulate operation. If in this case ignition occurs, then it is necessary to look for another reason. For example, in connection with a discharge pipe or sensor.
To check the operation of the relay inside the sensor, create a vacuum using the supply tube by making a characteristic click. The pneumatic relay has two outputs. One of them remains open, and a tube is connected to the other. The connection must be made correctly.
General recommendations
In the table, we tried to collect information about all the errors that their self-diagnosis system can detect. Keep in mind that some of them are specific to a particular equipment model and may not occur on other boilers.
In addition, with the advent of new models of equipment from Baxi and changes in their design, the list of possible errors and their codes may change. Therefore, it is highly recommended to have a user manual written specifically for your model on hand.
The elimination of the vast majority of errors in the operation of boilers should be entrusted only to competent specialists with the appropriate experience and knowledge. Independent intervention in the boiler design can lead to more serious damage to it, as well as to emergency situations.
In general, as practice shows, Baxi boilers are highly maintainable, so any of the errors mentioned above can be eliminated without compromising performance. It is strongly recommended not to delay contacting the service department - the earlier a problem is identified, the easier it is to fix it.
In addition, do not forget to regularly carry out boiler maintenance - this work should also be entrusted to specialists from a specialized organization. The recommended frequency of such maintenance is at least 2 times a year. To more accurately determine the optimal frequency, you need to take into account the intensity of use of the boiler, its technical condition, model, age and other individual parameters.
What could be the reasons for the error?
Here are the most likely reasons for the lack of draft in a gas boiler:
insufficient diameter of the exhaust channel (chimney) - design error, contamination with dirt, icing of the inner wall. The diameter of the chimney has decreased - the draft is insufficient.
exceeding the permissible length of smoke exhaust pipes. It is necessary to familiarize yourself with the manufacturer’s recommendations for installing the boiler and check that the necessary requirements are met. A horizontal section of the chimney pipe that is too long will result in a lack of necessary draft.
The pneumatic relay is faulty - the traction sensor. It is checked by the presence of a characteristic click when a vacuum is created in the supply tube (you can simulate it yourself).
missing or poor contact of the sensor with the board
Venturi device is faulty (melted or clogged)
the presence of condensate in the tube connecting the pneumatic relay with the Venturi device (true for boiler models without a special condensate collector)
incorrect connection of tubes to the pneumatic relay
For turbocharged boiler models:
fan is not working properly. May be due to clogging of the fan impeller, lack of sufficient lubrication on the fan shaft (does not develop the required speed)
lack of normal contact between the control board and the fan
malfunction of the boiler board (more common on LUNA (SLIM) series boilers)
Instructions for many models of Baxi boilers are also available for download on our website.
Next, we will examine in more detail possible options for eliminating the error.
Valve clicks
Gas valve clicks can be observed for various reasons - from a weak contact on the relay, to a difference in gas pressure in the main line and the boiler valve system. In each case, solving the problem requires its own actions.
Restore the gas valve relay contact group, adjust the minimum and maximum gas pressure, check the inlet reducer setting. All this work must be carried out by specialists from the service center; it is extremely dangerous to interfere with the operation of gas equipment on your own .
Error e03. Checking chimneys.
First of all, it is necessary to carry out a visual inspection of the chimneys.
It happens that the head of a coaxial chimney at the outlet can be equipped with a fine mesh to prevent the entry of large objects. In winter, when conditions are created for the formation of frost and this mesh is covered with frost so that air intake completely stops. The formation of ice or icicles is not a rare occurrence; ideally, when designing the boiler installation site, even the wind rose of a particular region should be taken into account.
If we are talking about the summer period, then the reason for the “narrowing” of chimneys may be spiders making webs or birds making nests. Here, I think everything is clear.
Carefully inspect the intake pipe and the air outlet pipe, if there are no obstacles there, you can proceed to consider the following possible causes of error e03 baxi.
Checking fan operation (for turbocharged models)
To evaluate the operation of the fan, you need to remove the front cover. First of all, when the boiler is operating, you need to check whether it rotates at all. This can also be assessed visually - there are rotating blades on the front part. If rotation does not occur, you need to turn off the boiler and try to rotate the blades yourself to eliminate the possibility of jamming and evaluate how freely the blades rotate. There should not be any difficulties, rotation should occur evenly without extraneous noise.
In practice, several problems are often encountered: the lubrication in the fan axle bearings runs out, the internal blades become overgrown with dirt, and the axle bushing wears out (less often).
In the BAXI ecofour boiler, the fan can be easily removed along with the top cover of the combustion chamber. And inspect the turbine blades and, if necessary, clean them of dirt. The bearing is lubricated with a special high-temperature grease; if the axle bushing is broken (this happens during long-term operation with dirt on the blades), it will have to be replaced.
If the fan does not start when the boiler is operating, it is necessary to check the reliability of its connection to the board and preferably the presence of voltage at the terminals (220V). A common reason is the failure of the relay on the board responsible for turning on the turbine, but in this case, the diagnostic system will record an internal error on the board. If all checks have shown that everything is in order here, we move on to the next stage of troubleshooting.
BAXI e03 error due to a faulty traction sensor (pressostat)
You can eliminate the malfunction of the pneumatic relay as follows: when the boiler starts, the fan starts working, then the signal for the control unit to ignite should be the closing of the contacts of the pressure switch relay, therefore, you can close them manually to simulate operation. If ignition occurs, the cause must be sought either in the sensor itself or in the connection with the outlet pipe.
You can check the operation of the relay inside the sensor by creating a vacuum through the supply tube (suck air from it) according to the characteristic sound of operation - a click. The pneumatic relay itself may have two outputs, one of them is simply open, and a tube from the fan is connected to the second. I read once on a forum that one of the users had a tube connected to the wrong outlet, but how the boiler worked before is a mystery.
BAXI error E 03. Condensation in tubes
Another option for the occurrence of error E03 on the boiler is
is condensate, which under certain conditions can accumulate in the tube. It can either get on the relay itself, or simply affect the amount of vacuum and prevent the relay from operating.
Boilers of a later production date are equipped with either special extensions to collect condensate or insulated tubes to prevent its formation. If you see drops of liquid, you can remove the tube and blow it out.
Damage to the Venturi device
This mainly happens due to the presence of other malfunctions, for example, a primary heat exchanger clogged with scale or prolonged operation of the boiler at maximum power. The tubes of the device simply melt, and any, even the slightest, deformation leads to the entire system not working correctly and the unit stopping.
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Almost everything described above can also be viewed in the video, which describes error e 03 in detail:
Why doesn't the device restart?
Failure to restart usually indicates the presence of air in the system or internal elements of the boiler.
The solution to the issue may be to bleed air from the circulation pump, which is done by loosening the central screw of the device . The air will hiss out, and when water comes out, you need to tighten the screw again until the coolant stops escaping. After this, restart the boiler.
Error e03 boiler Baxi 5
Heating equipment under the Baxi brand is reliable: most of the operating problems that arise are caused by external factors. A number of errors appearing on the display of gas boilers are the result of violations of installation or operation rules. Code e03 is one of them. Knowing the probable reasons for Baksi stopping, it is easy to detect and fix the problem yourself.
Boiler error E03 Baxi
Decoding error e03 Baxi
The signal on the basis of which this code is generated by the boiler’s electronic board comes from the draft sensor. Its function in models with an open type chamber (i) is performed by a thermostat, and in a closed type (Fi) - by a pneumatic relay. Error E03 of the Baxi gas boiler is associated with a decrease in the speed of gas flow in the smoke exhaust channel.
Where to begin
Chimney
Correct installation of a chimney for a Baxi boiler
Access to the chimney blocked due to icicles
Venturi device and sensor
The measuring element is connected by a polymer tube to the pneumatic relay membrane. During operation of the gas Baxi, the device may melt or become clogged: error e03 appears immediately. If the Baxi boiler model does not have a condensate collector, the tube cavity is gradually filled with drops of liquid: it can be easily removed, purged and replaced.
Venturi boiler device Baxi
Recommendation
Controls the air supply, condensation may form in the tubes
Fan (supercharged models)
To gain access to it, the front panel of the Baxi is removed. It is easy to verify whether it is working properly or not by putting the boiler into operation. If the impeller blades do not rotate, the cause of error E03 is in the fan.
Boiler fan Baxi
Check what
Probable Causes
Baxi boiler fan. Dirt on the impeller, engine axis
Recommendation . Baksi models have a special outlet at the turbine outlet (black). It is intended for the service technician to measure the vacuum created by the fan: the norm is 45 mbar.
Lack of lubrication
Recommendation . A special composition is used - high temperature. Any lubricant on hand is not suitable for fan maintenance.
Recommendation . When repairing a Baxi boiler yourself, it is easier to replace the fan than to look for a spare part for it. It costs from 7900 to 9200 rubles and is sold in specialized heating equipment stores.
Electrical testing
The interturn short circuit of the winding cannot be detected by itself; a short (to the housing) or a break can be detected. But even in this case, the fan of the turbocharged model of the Baxi boiler must be replaced.
Electronic board
A malfunction in it is a rare case: it fails only due to carelessness of the user. Probable causes of failure: formation of condensation on the panel (failure to comply with operating conditions) or periodic surges in supply voltage.
Electronic board of the boiler Baxi Ecofour 240 Fi
Recommendation . Repairing the Baxi boiler module on your own is not practical. On thematic forums you can find advice based on the personal experience of users on how to eliminate error e03 in this way, but it is better to contact a service organization.
Without the skills, appropriate equipment and circuits, there is a high risk of finally “finishing it off” in such a way that even a professional cannot restore it. A new module costs between 11,000 and 13,000 rubles (depending on the modification of the Baxi boiler), and its repair will cost 450–550. The difference is obvious.
Additional errors
Other messages may appear on the LCD display of your boiler, which should also not be ignored:
- Flashing "!" signals operation at the lowest power. The reasons for this may be abnormal gas pressure at the inlet, problems with electronics, clogged chimney and/or air duct, problems with the gas valve.
- The flashing sign St means that the boiler has automatically switched to defrosting mode. Once this function is completed, the message should disappear from the screen. Otherwise, a failure occurs.
- The radiator and mixer symbols are flashing - this indicates scale deposits or problems with the temperature sensor attached to the DHW circuit.
All these malfunctions must also be eliminated by specialists of the relevant profile who have the necessary competencies
