The manufacturer's recommendation for this fault code is brief: contact a professional. In practice, knowing the reasons that trigger the failure of a Baxi gas boiler with error E35 gives the user the opportunity to deal with the problem on their own. The article explains what to do.
Error E35 on the control panel of the Baxi boiler
Installation of Baxi gas boilers
Almost all gas boilers have the same basic design: natural gas flows through the gas valve to the burner nozzle block, then is ignited by an electric spark through the electrode. Using a heat exchanger, the heat from combustion is then transferred to the heat carrier. The heat exchanger is located above the burner.
Gas boilers differ in the presence of a second flow-through heat exchanger, which is necessary for preparing water, as well as in functionality.
The most common options are:
- 1 heat exchanger and indirect heating boiler.
- Two separate heat exchangers. 1 – for preparing water, 2 – for the heating circuit.
- Combined heat exchanger for heating and water preparation.
Gas boilers can be divided into turbocharged, atmospheric, and also with an open and closed combustion chamber. Equipment with an open chamber takes air from the combustion room. All safety standards and regulations must be observed in the premises. In some countries it is prohibited to use this type of gas boiler.
A turbocharged boiler does not require a chimney, unlike an atmospheric one. In the first option, combustion products are forced out of the combustion chamber by a fan through a coaxial chimney. This gas boiler is suitable for installation in an apartment.
The following processes occur in a gas boiler: switching the flow of hot water, heating water, removing combustion products and monitoring safety.
An electronic board is necessary to control and monitor the safety of all equipment. The electronics operate according to the set values and, in the event of failures, stop the operation of the gas boiler.
Advantages and disadvantages
The Baksi company occupies a leading position in the heating equipment market.
The boiler is very easy to operate and maintain
The following advantages of this manufacturer’s equipment can be highlighted:
- environmental friendliness and safety;
- ease of operation and flexible adjustable settings;
- reliable protection against freezing;
- automatic diagnostic function;
- efficiency;
- a wide range of models, the ability to select a unit to suit any requirements;
- stylish, thoughtful design.
Of course, any equipment has its drawbacks, and Baxi products are no exception. The disadvantages are:
- Sensitivity of equipment to voltage changes. For the device to work reliably, you need to connect it through a stabilizer.
- Installation is quite complicated, so it is best to entrust it to a professional.
- High price compared to models from other manufacturers.
In this video you will learn about the main malfunctions of Baksi boilers:
Why is it necessary to ground a gas boiler?
The safe operation of a Baxi gas boiler is only possible if the device is properly grounded. It is necessary to organize grounding taking into account the current PUE standards.
Before starting the gas boiler, you should check that the connection is correct. The operating instructions state the following: if the requirements are not met, the gas boiler will be void of warranty.
When installing the equipment, the inspection company must check the quality of the grounding. Most often, in apartment buildings, residents buy an apartment with a working gas boiler and do not think about the quality of its connection. Problems may arise over time due to improper grounding. Therefore, it is recommended to check the quality of grounding and installation of the gas boiler before starting use.
Do not forget that this equipment is a gas installation and a high-risk unit. There are times when a fire occurs due to negligence in safety.
It is worth paying special attention to the boiler control electronics. Almost all models are equipped with a security and control system. An electronic board that includes various components is responsible for this. This element has the highest cost and accounts for about 30% of the total cost of a gas boiler. If there is no grounding, the board may break and error e35 may appear.
The operation of the gas boiler is controlled using automation. It includes actuators and various sensors. If the connection to the network is incorrect, a failure and emergency stop of the equipment may occur. In some models, the polarity of the connection must be observed.
Using a tester, the grounding is checked: there should be no potential between the neutral wire and the phase, and the operating voltage between the ground and phase terminals should be 220-230 V. In addition, to check the grounding of metal parts of the equipment, you can use a special indicator screwdriver.
Decoding
Parasitic flame - this is how the malfunction is described in the instructions for the boiler. Error E35 is not typical for Baksi, it is rare, and even experts find it difficult to accurately diagnose the equipment. On thematic forums, the emphasis is on the failure of the Baksi board, although failures are mainly caused by external factors: instability of power supply parameters, improper grounding, interference, and a number of others. The cost of the control unit reaches 30% of the price of the Baxi boiler, and if error E35 occurs, you do not need to immediately purchase a new board - the reason for the unit stopping is not necessarily its malfunction.
Baxi boiler control board
Flame ionization electrode
A flame sensor is installed on the burner of a gas boiler and is necessary to monitor the presence of a flame. The electrode on the control board is connected to the connector. The flame sensor in some boilers can be combined with an igniter.
There is an air gap between the burner and the electrode, which prevents the passage of current when the boiler is not working. When gas burns, the control board records the flow of microcurrents through the flame. The value should be in the range of 0.5-5 µA.
Incorrect operation of the electronics may be caused due to the presence of various parasitic interferences and potentials on the parts.
Rules for safe operation
Any gas boiler is used to process fuel that is dangerous to the life and health of consumers in the event of its leak, the release of its disposal products and the leak of the coolant heated by it.
Boilers from the Japanese manufacturer Rinnai are known for their highest reliability and excellent performance. Basically, manufacturing defects are extremely rare on these devices and technical errors are associated with improper operation and late preventive inspection.
All work on repair and replacement of gas-using equipment should be carried out by specialists from the service department or gas distribution department. Otherwise, you may face a gas supply cutoff at best, or a threat to your health and life at worst.
Moreover, the cost of such devices, especially from well-known manufacturers, is not always budgetary, and the warranty is long. Intrusion into the system of gas boilers can be regarded as a violation of warranty immunity and, accordingly, you should not expect free repairs and replacement of individual elements from the service department.
But again, it is quite possible to fix some issues in boiler malfunctions yourself, or knowing them, you can determine what work to call a specialist for and ask how much the repair will cost.
Sources
- https://GradusPlus.com/kotly/gazovye/rinnai/
- https://tehnreshenya.ru/rinnay-oshibka-99-chto-delat/
- https://Kotly.VseInstrumenti.ru/rinnai/
- https://malivice.ru/oshibki-gazovogo-kotla-rinnai-kody-oshibok-sposoby-ustraneniya/
- https://teplofan.ru/oshibki-kotlov/kody-oshibok-rinnai
- https://sovet-ingenera.com/otoplenie/kotly/oshibki-gazovogo-kotla-rinnai.html
What to do if error e35 remains?
If no methods help resolve the error, you may need to replace the board. Some models of Baxi gas boilers have installed boards that are sensitive to external interference and power supply standards. In the picture below you can see the features of the boards that work correctly.
The cause of error e35 on Honeywell boards may be increased sensitivity to humidity. Due to accumulated dust, this error may appear. For Bertelli boards, simply rinse the surface with isopropyl alcohol.
Gas boiler Baxi mainfour 240f error e35
In this series of gas boilers there are 2 types of control board: 1 different and 2 interchangeable. Visually, you can distinguish the type of board by the color of the display panel. In mainfour 240f gas boilers, the board does not have a flame modulation control circuit and also has a gray panel.
Gas boiler Baxi ecofour 24 error e35
The most versatile gas boilers are the Baxi Mainfor and Ecofor series. The difference is the secondary plate heat exchanger for heating water. Mainfor boilers have 1 heat exchanger for heating water and heating. Most often, the cause of error e35 is improper grounding of the equipment, so the recommendations for elimination are almost the same.
Many manufacturers include universal boards in their equipment, so different boilers have interconnected boards and can be installed on different series. In order to make the correct installation, you need to configure the board to work on a specific boiler using the configuration menu.
How to proceed
Start with the simplest action - restart the boiler
(press and hold the Reset – R button for 2 seconds). This is also stated in the factory instructions. If error e41 is caused by a short-term failure, it will disappear.
Restart the baxi boiler with Error E 41 on the control panel
Perform gas path diagnostics
Error E41 of the Baxi boiler appears when the pressure at the inlet to the heating unit is below critical or when there is no supply of “blue fuel” due to a blocked channel.
It is easy to estimate the gas pressure in the pipe and its flow into the house using a stove. All burners are ignited, and a conclusion is made based on the intensity of combustion and the height of the flames. If they are small, the Baxi boiler fittings will not respond and error e41 will appear. If the pressure is low, you need to check all equipment mounted on the line.
- Position of shut-off valve controls. Accidentally shutting off the supply tap, or tripping the shut-off valve during a power outage are common causes of error E41 in the Baksi boiler.
- Serviceability, condition of technical devices: meter, reducer (with autonomous gas supply), main filter, filling level of the tank (gas tank, cylinder group). If error E41 occurs at low temperatures due to a drop in pressure, you need to insulate containers with “blue fuel” and enter the pipe into the building.
Gas pipe shut-off valve
Check the chimney
A blockage that reduces the channel diameter, icing of the tip, frost on the filter is enough for error e41 to appear. In relation to Baxi with an open chamber, it is necessary to ensure a good flow of air into the room. Code 41 often appears when a powerful exhaust device is turned on in an adjacent room. It is not for nothing that the manufacturer does not recommend installing such equipment near the Baksi boiler.
An unpleasant picture when a mouse is found in the chimney
Conduct diagnostics of the Baxi boiler.
His error e41 is not necessarily the result of a serious breakdown. To save time, you need to start with a visual inspection of the inside.
Error e35 in Baxi Eco Four, MAIN four and Fourtech
This error can be described as a stray flame. A combustion signal comes from the ionization sensor until the board sends a signal to open the gas valve.
This error can be caused in a Baxi gas boiler for the following reasons:
- The gas valve is not sealed. After the signal to open the valve is turned off, the presence of a flame is detected.
- Moisture has entered the electronic board of the gas boiler.
Error e35 can occur accidentally in a gas boiler. To solve the problem, you can hold down the “R” button to reboot the equipment. If after this the error does not disappear, then you should look for another cause of the failure.
One of the causes of error e35 may be a malfunction of the electronic board or its incorrect operation.
You can resolve this error as follows:
- Install an isolation transformer.
- Check the network parameters, which must comply with the standards. It is necessary to check the absence of potentials between the ground, zero and pipes.
- Install a special interface device.
Useful tips
- If the boiler error E35 is not eliminated by the measures taken, check household electrical appliances. Perhaps some consumer of electricity negatively affects the parameters of the network (“lowers” the voltage, introduces interference, etc.). It is recommended to turn off all operating equipment one by one at night, leaving only Baksi in operation - based on experience in eliminating the E35 error, this technique helps to find the culprit for the appearance of the fault code.
- When connecting a gas boiler to the mains, professionals recommend using the Teplocom GF device. Referred to as: galvanic isolation, interface device, isolation transformer. The price of 5,350 rubles will not be a burdensome purchase, but the E35 error of the Baksi boiler will not appear due to problems with interference. The instructions for the unit say: for connecting heating installations to networks ~I without grounding. Even if it actually exists, at many sites it does not meet regulatory requirements. Teplocom eliminates parasitic (stray) currents on the line, adapts the heating unit with autonomous sources. If the operation of the Baksi boiler in a house or apartment is systematically blocked with errors, galvanic isolation is the solution to the problem.
