2017-05-17 Evgeny Fomenko

The device and principle of operation of boilers Neva Lux

Gas boilers Neva Lux are presented in two variations - wall-mounted and floor-standing, consider their device using some models as an example. Neva Lux 8618 is a single-circuit heating boiler, wall-mounted installation method, has low level energy consumption, a fairly high efficiency of 91%, power 18 kW. It can heat a room with an area of ​​30 to 180 square meters.

Works on both natural and liquefied gas. It has a small size, it is equipped with a combustion chamber that is cooled with water, it can also be connected to a room thermostat, which is convenient for use. Equipped with a protection device against overheating (boiling), a thermostat against overheating of the gas exhaust device. It can be connected to both the chimney and the turbo nozzle.

Neva Lux 8224 is a double-circuit gas boiler designed for heating a room up to 240 meters2, as well as for heating water for household needs, throughput 14 liters per minute. Its power is 24 kW, it is equipped with a closed combustion chamber.

The installation method is wall-mounted, equipped with a built-in 6-liter expansion tank, which makes it possible to connect the boiler to a 70-liter heating circuit. The design provides for two heat exchangers, a copper one for the heating circuit, and the second one, made of stainless steel, for hot water supply.

Powered by natural or liquefied gas, for ease of use it has a display that reflects the current and set temperature in the coolant.

Neva Lux 7224 is a wall-mounted, double-circuit device designed for heating a room with an area of ​​up to 240 m2, the throughput of water for domestic needs is 14 liters per minute. Can work from natural gas and liquefied, coefficient useful action 92%.

Boiler Neva Lux 7224

Equipped with a bithermal heat exchanger, thanks to which it is possible to reduce the final cost of heat. It is equipped with an electronic self-diagnosis system, and a small display is installed on the case to indicate readings.

Neva deluxe 7023 - wall-mounted, designed for heating a room up to 250 meters2, as well as heating service water of 13 liters per minute. It works not only from natural gas, but also from liquefied gas; for ease of operation, you can connect a room controller.

The smoke is removed forcibly, with the help of a built-in fan, air for burning the fire is forced from the street. Equipped with a closed combustion chamber, a coaxial heat exchanger, an expansion tank with a volume of 6 liters.

Neva Lux 8023 is a double-circuit wall-mounted boiler, which has the ability to provide heat to a room, the area of ​​which does not exceed 240 m2. The circulation of the liquid in the system is forced, with the help of a pump, equipped with a closed combustion chamber.

Fume extraction takes place thanks to an exhaust fan. The power of the device is 23 kW, the presence of two heat exchangers is provided, the heating circuit is of paramount importance, made of high-alloy stainless steel.

Major error codes

Like any other device, it periodically fails, then we will consider in detail the error codes for the Neva Lux gas boiler.

Gas boiler control panel Neva Lux

e1

Error e1. This malfunction indicates a low fluid pressure in the heating circuit.

The reasons may be as follows:

e2

Error e2. Failed ignition, check the following:

e6

Error e6. No cravings. Check possible reasons this malfunction:

e7

Error e7. Exceeding the permissible temperature in the coolant.

What are the possible reasons and what to do, we will consider in more detail:

01

Error 01. Malfunctions caused by unsuccessful ignition.

Possible reasons:

02

Error 02. Indicates boiler overheating.

Possible reasons:

03

Error 03. In order to fix it, check:

04

Error 04. Low pressure in the heating circuit, you need to check:

• Too much the pressure in the heating system has dropped, raise it to the recommended level.
• Perhaps in the system an air lock has formed, remove it using the vent valve.
• Broken pressure sensor in the heating circuit. Replace it.
• The pump is broken, clean it and replace if necessary. Visually inspect all connections and connectors on the control board.

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Errors of the Neva Lux boiler and their meanings

Error 01 (E2)- Malfunction associated with unsuccessful ignition or overheating of the heating medium. The boiler is not functioning.

Code 01 for models Neva Lux 7023, 7224, 8224. Code E2 - Neva Lux 8023, 8029.

Burner clogged. Clean burner and nozzles. The ignition electrode is faulty, its electrical circuit is broken, the gap between the ignition electrode and the burner section is incorrect. Check the electrical circuit and contacts, set the correct gap (4-5 mm). Replace the ignition electrode. The ignition transformer is defective or its electrical circuit is broken. Check the electrical circuit and connector contacts in the control unit. Check and, if necessary, replace the ignition transformer. The ionization electrode is faulty, its electrical circuit is broken, the gap between the ionization electrode and the burner section is incorrect. Check the electrical circuit and contacts, set the correct gap (3-3.5 mm). Replace the ionisation electrode. Also, in case of error 01 (E2), the coolant overheating sensor in heating mode may be triggered. Find and eliminate the cause of the coolant overheating. The coolant overheating sensor is faulty or its electrical circuit is broken. Check the electrical circuit and contacts. Inspect the overheating sensor (must be closed at temperatures up to
95C). No flame due to gas valve failure. Check for contact in the valve connector and in the control unit. Replace the valve if necessary.

Error 02 (E7)- Overheating of the coolant

Code 02 for models 7023, 7224, 8224. Code E7 - models 8023, 8029.

The fan is damaged (the motor winding is burnt out, the bearing is jammed, the impeller is jammed, the fan's electrical supply circuit is broken). Check the continuity of the circuit and contacts in the connections. Ensure free rotation of the impeller. Replace fan if necessary. Also, in case of error 02 (E7), the coolant overheating sensor may be faulty or its electrical circuit may be broken. Check the electrical circuit and contacts. Check the overheating sensor (should be closed at temperatures up to 95C). The coolant overheating sensor has triggered in heating mode. Find out and eliminate the cause of the coolant overheating.

Error 03 (E6)- Malfunction in the combustion products removal system

Code 03 for models 7023, 7224, 8224. Code E6 - models 8023, 8029.

Clogged chimney or supply air duct. Clean the pipes. The supply pipes or the housing of the air pressure switch are damaged. Repair damage or replace tubing. The electrical circuit of the air pressure switch has broken. Air pressure switch defective. Check the continuity of the circuit and contacts in the connections. Replace the sensor.

Error 04 (E1)- Lack of water pressure or lack of circulation in the heating circuit. The device does not start.

Code 04 for models 7023, 7224, 8224. Code E1 - models 8023, 8029.

Small amount of water in the heating system. Top up the heating agent in the heating circuit to the required pressure. There is air in the heating system. Remove air from the heating system. Clogged dirt filter in the heating circuit. Clean the filter. Bypass valve defective or incorrectly installed. Check and, if necessary, replace the valve. Failure of the circulation pump. Replace the pump. Even with error 04 (E1), there is insufficient mobility or souring of the stem of the flow sensor in the heating circuit, which transfers movement to the microswitch, rupture of the membrane of the flow sensor. Remove the microswitch from the flow sensor housing. By switching the boiler on and off again (turning on and off the pump), release the stationary stem; if this does not help to check the integrity of the membranes on the flow sensor. Microswitch defective or electrical circuit broken between microswitch and control unit.
Check the electrical circuit and contacts in the connector of the control unit. Replace microswitch. Failure of the servo motor of the three-way valve drive. Replace the servomotor. Gas supply interrupted. Check the presence and pressure of gas at the inlet to the gas unit. Click on the Reset button. Incorrect phase connection when connecting the unit to the mains. Make the correct connection of the phases.

Error 05 (E3)- Failure of the heating circuit temperature sensor. The appliance does not work in either heating or DHW mode.

Code 05 for models 7023, 7224, 8224. Code E3 - models 8023, 8029.

The temperature sensor of the heating circuit is defective. Replace temperature sensor. Violation of the electrical circuit temperature sensor - control unit. Check the electrical circuit and contacts.

Error 06 (E4)- Damaged DHW temperature sensor. The boiler will continue to operate in heating mode and in hot water supply mode.

Code 06 for models 7023, 7224, 8224. Code E4 - models 8023, 8029.

DHW temperature sensor malfunction. Replace the DHW temperature sensor. Damage in the electrical circuit DHW temperature sensor - control unit. Check the electrical circuit and contacts.

Error E8- Communication error

The loop connecting the controller board with the control board is damaged, or there is no contact in the loop connectors. Check the integrity of the loop and the presence of contact in the connectors. Replace the ribbon cable if necessary. Control board malfunction. Replace the board. Faulty controller board. Replace the board.

Error E9- Supply voltage out of permissible limits

The boiler supply voltage is outside the range of 180 - 250 V. When the normal supply voltage is restored, the device will turn on automatically.

Troubleshooting

For 2 years I have been operating a Neva Lux gas boiler manufactured by Baltgaz. Now defects began to appear in his work. If you use it for a long time hot water, the pressure in the system drops and it stops by error 04. Although the pressure gauge shows the same pressure of 1.6 bar. Has to
constantly use make-up. How can I fix this?

Perhaps the pressure in your expansion tank is lower than it should be. It is then that error 04 is possible.

Six months ago, I installed a double-circuit boiler Neva Lux 8230. Recently I encountered such a problem. When hot water was required, I turned on the tap as usual. At first it went warm, and then cold again. Error 02 appeared on it at that moment. I tried to reset it with the "reset" key, but after that the heating turned on. After that, hot water was required again in the evening. I turned on the tap and everything worked fine. The device worked for 4 days without problems, but today the error appeared again. I studied it more carefully. It happens like this. After the transition to heating water for DHW occurs, a sound is heard inside, similar to air intake. At the same time, you can observe the instability of the manometer readings (approximately 0.5 in each direction). And all this is accompanied by the same strong sound not only from itself, but also from the membrane tank (additional, external for 18 liters). After that, the pressure rises sharply to 5 bar. It turns off, the water temperature drops to 23C. And error 02 is displayed. The instructions say that I have air in the heating system, but I work with hot water supply. What's the connection? Maybe my 3-way valve is broken? Or is the filter in the heating system clogged?

Error 02 - the coolant is overheating. The fan may be broken or the sensor is damaged.

My boiler Neva Lux 7023 stops about 2 times a month by error 07. Restarting always solves this problem. And now a new error has appeared - E5. It works for a quarter of an hour and turns off. What happened to him?

Error E7 means that the coolant is too overheated. Perhaps you have a heat exchanger with inside all in scale, and because of it there is poor circulation in the system. Did he start making some unusual noise with you? But regarding the E5, here you need to pay attention to the pressure switch or the fan. It is necessary to look at both that and that. In an amicable way, this problem should be solved by a specialist. Also, just in case, check if your chimney is icy.

The unit showed error 03. As I understand it, it means problems with the fan. When checking, I applied voltage to it - everything is normal. I also checked the pressure switch - it is also working properly. It turns out a relay on the board? A couple of years ago I came across a similar one. But then an acquaintance helped me out, giving from his old unit. Tell me, is it possible to work somehow without this relay? I tried to manually spin the fan, it started to work, but the gas did not come in. Is the same relay responsible for this? But now the error was 01.

In order for the relay to work longer, it is necessary to more carefully adjust the gas valve and heating power, and it is also advisable to install a room thermostat. All this not only increases the service life of the device, but also saves gas. To solve error 01, you need to check the voltage on the gas valve, whether it opens normally and whether gas is flowing. It is better to call a specialist, since all these checks are life-threatening. And the master has a diff. pressure gauge for assessing gas pressure. And so, most likely you have little house and you did not tune the system for the heated area. So a room thermostat is the best solution for you.

Help me please. In our new apartment, even before us, a wall-mounted dual-circuit NevaLux 7218 was installed. During the day, it constantly stops by mistake 04. They began to feed, then the temperature began to drop. And now water has also flowed out of it (in the place where the heating pipe enters it). I had to turn it off. So you can't use it?

It is necessary to check the pressure switch. In the chimney, a small air exhaust pipe could be blocked.

My wall-mounted boiler Neva Lux 7023 (Baltgaz) has a problem with hot water supply. With heating, everything is normal, and as soon as I start parsing water, error E2 appears. This does not heat up the water. If the water is turned off, then it is perfectly normal to continue heating the apartment. The water pressure is consistently good. I looked in the instructions, it says that E2 is an error of unsuccessful ignition or overheating of the coolant. During DHW operation, the burner starts working and burns for 2 seconds. Then the thermometer shows a temperature of 95C, immediately turning off the device and an error. The water runs warm while the burner is on. What could have broken?

Try to check the DHW temperature sensor, perhaps this is the case. Although, in theory, the E2 error symbolizes problems with ignition, but then there would be no heating.

My wall-mounted Baltgaz boiler at first did not want to switch from heating system mode to hot water supply. Although, sometimes, for reasons I do not understand, it still worked as it should. First of all, I checked that all contacts were in good working order, then I checked the electric motor of the three-way valve. If you clamp it with a screwdriver, then the valve is in good order and works as it should. If you switch the mode (with the engine removed), then everything works. The movement of the stem is noticeable and consistent. I contacted the service center. The master who came to me suggested that the problem was in the flow sensor. He did not see the signal coming to him. We need a new one. But he did something to make the device work. It did not work for a day, and then I needed to turn it on. And it won't start. The indicator blinks, all possible symbols are highlighted. The reboot did not help. Disconnecting the power supply did not help either. What could be the problem?

Take out the connector on the board, and disconnect the wires one by one. First of all, those that are responsible for the drive of the three-way valve. Then reattach them. This should fix your problem.

I just can't fix the Baltgaz Neva boiler. Error 03 constantly appears, the fan does not work during ignition. If you blow on the pressure switch tube, then it starts spinning. The device does not want to turn off on its own, you have to do it manually. How to be?

Find the hatch in the upper right corner. You need to open it and restart it.

Other malfunctions

Lack of spark for ignition.

Ignition plug defective or poorly installed. Correctly install the spark plug (the gap between the end of the spark plug and the burner section is 4-5 mm) or replace it. Loose contact between terminal and ignition wire. Check the contact of the terminal with the ignition wire. The ignition electrode is dirty. Wipe the electrode from dust and degrease.

The boiler does not turn on.

Lack of gas. Lack of water. Lack of electricity. Carry out appropriate checks (incoming gas, presence of water, connectors, fuses). Burner nozzles clogged. Clean the nozzles.
Air in the gas circuit. (May occur after prolonged inactivity). Turn on the unit several times until the error is eliminated. Fuse blown. Replace the fuse on the controller board. The temperature sensor of the heating circuit has been triggered. Check pump operation. If the pump is running, check the sensor. Defective gas valve. Repair or replace the valve. Deactivated boiler. Switch on the device again.

Pops in the burner.

Gas supply problems. Check the gas pressure upstream of the unit. Dirty burner. Check and clean the burner. Insufficient air supply. Clean the burner. Poor flame control. Check gas flow and gas pressure upstream of the burner.

Gas smell.

Gas leak. Check the entire gas circuit for leaks using soapy water or a gas detector.

Little or no hot water output.

Insufficient inlet water pressure. Increase pressure by installing an additional inlet pump. Clogged water filter. Remove and clean the filter on the DHW line. Heat exchanger with partially or completely blocked pipes. Clean the heat exchanger tubes.

Cold radiators in winter.

The heating temperature is set too low or the temperature sensor is faulty. Set a higher heating temperature or replace the temperature sensor. The pump does not work due to contamination. Remove the screw at the front of the pump and turn the spindle.

Hot radiators in summer

Winter heating mode. Set summer mode.

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Borino, ZhMZ, Siberia, Alpha Calor, Thermotechnik.
Adjustment gas automation Eurosit 630. Replacement of thermocouple and maintenance of the ignition burner.

The Neva Lux gas water heater from a domestic manufacturer is a technically complex product. The entire cycle of work from turning on the column to heating the water is controlled by automatic equipment, which malfunctions over time. For a better understanding of the malfunction, the company's engineer placed an indicator window on the front panel, in which one or another error code is displayed during an emergency stop. Let's consider them in more detail.

ATTENTION! Maintenance operations for the repair of gas water heaters associated with the disassembly of its gas or water communications must be performed by qualified craftsmen. Self repair can give the opposite effect to the raft prior to purchasing a new apparatus.

Error E0 - lack of gas

Reason # 1. PTurn off the gas at the descent to the column or light gas stove... Lack of gas in the pipeline due to work on the pipeline. The servo motor (block with solenoid valves) is out of order.

This error cannot be eliminated on your own. You will need the help of a service worker. Contact a specialized service center for repair.

Error E1 - no flame

Ignition clicks for about a minute the burner does not ignite. The electronic control unit does not see the presence of a flame and the column goes into emergency mode.

Reason # 1. The presence of air in communications... Didle time of the column, or after its installation, the operation of the ignition burner will occur only after air has been removed. The system should be purged by constantly turning on the column. Since the ignition lasts no more than a minute, after completion you should reopen the water tap until the ignition occurs.

Reason # 2. Lack of gas in the cylinders or the valve on the lowering to the dispenser is closed... POpen the shut-off valve fully. Check gas cylinders with liquefied gas. Replace them if necessary.

Reason number 3. There is no contact between the unit and the flame sensor... It is necessary to service the contacts coming out of the electronic unit, if necessary, clean them, press them for a good connection, replace the worn ones.

Reason number 4. Flame presence sensor outside the flame zone... Adjust the position of the flame detector so that its electrode is in the gas combustion zone. Make sure that the electrode does not touch other metal components. Clean the electrode from carbon deposits.

Reason number 5. The gap between the ignition plug and the igniter is broken... From constant heating and cooling, the pilot burner nozzle is deformed, which increases the gap to the spark plug. Every two years, or with a regulated maintenance, the gap should be adjusted 4 ... 5 mm.

Error E3 - breakdown of automation

The solenoid valves are triggered before the signal from the water flow sensor appears.

Reason # 1. Breakage or malfunction of solenoid valves... Call the wizard for diagnostics.

Reason # 2. Electronic control unit defective... Invite the master to the house.

Error E4 - premature inclusion

The flame detector gives a signal about the presence of a flame until the signal from the water flow sensor appears.

Reason # 1. You are trying to turn on the speaker using a different power source (matches).

Reason # 2. The electronic control unit is out of order.

Error E5 - no signal from the flow sensor

There is no signal coming from the water flow sensor (open circuit).

Reason # 1. The circuit is open between the electronic unit and the water flow sensor... Use a tester to check the circuit and also check the sensor for an open.

Error E7 - lack of gas

The column goes out after turning on. Unsuccessful attempt ignition. Process: the pilot ignites, then the main burner, then everything goes out and the process is repeated again.

Reasons # 1. Low gas pressure... Open the gas cock at the lowering to the column. Invite a specialist to your home to measure the gas pressure in the system and further configure the column. You should also purge and clean the gas filter.

Reason # 2. The flame ionisation sensor is not in the range of the main burner fire... Adjust the sensor. Install the electrode so that the main burner fire flushes from both sides. Carbon deposits may have formed on the sensor, which makes heating weak - clean and adjust the sensor.

Reason number 3. The mechanism in the water unit is stuck... Increased salt deposition on moving machinery leads to seizing and stopping. A stuck rod of the water unit leads to a permanent short circuit of the flow sensor. In this case, it is necessary to dismantle the water part and carry out preventive work: lubrication of the rod, replacement of rubber gaskets.

Error E8 - no traction

The column turns off after 2..5 minutes of work. Restarting becomes possible only after cooling down - 2..3 minutes.

Reason # 1. Lack of draft in the chimney... Clean the chimney.

Reason # 2. Soot on the heat exchanger... Increased accumulation of soot on the heat exchanger, which prevents the passage of carbon monoxide into the chimney. To fix the problem, the column should be serviced.

Reason number 3. The traction sensor is faulty... The traction sensor works for rupture. Over time, the sensor becomes very sensitive to vibrations and can turn off the column during heating. Therefore, with this error, the sensor will be checked for operability.

Error 99 - short circuit

Numbers 99 blink on the display for a while, then the column turns off with an error message LO.

Reason # 1. Closed the water temperature sensor(makes sure that the heat exchanger does not overheat). The error can be eliminated only by replacing the sensor and its wires.

Error H1 - insufficient heating

The column does not heat the water to the specified temperature.

Reason # 1. Set heat at high pressure. The column cannot cope with heating the amount of water that passes through the column. Reduce head.

Reason # 2 ... Burner clogged with dust. If you notice that the gas is burning orange, and the flame is sluggish and elongated, then it's time to clean the burner. If you neglect cleaning, then this error will appear constantly. The efficiency of the column will be halved. A lot of soot will appear.

Popular gas equipment - heaters, water heaters, gas stoves and boilers has been produced by the Gazoapparat plant located in St. Petersburg for over 50 years. After the establishment of the Baltic Gas Company concern, the enterprise became part of it, retaining production capacity and specialization. The current name of the company is Neva. It is developing rapidly and produces high-tech boilers equipped with modern automation. For example, the popular and demanded series - gas boilers Neva Lux, which is presented in two categories.

The range of popular gas boilers manufactured by Neva includes two basic series: Lux and Turbo. In this article, we will consider the most famous and popular Lux series, which is divided into two categories:

The most popular boilers of the Neva Lux series

Modern gas boilers of the luxury class are produced under the Neva brand, in which the shortcomings of previously produced models are eliminated. The design has been changed, modern automation has been installed, but the price of the products is lower than the models of Western companies with similar parameters. Other models of gas boilers of domestic production can be found in our article.

Model Neva Lux 8618

For gas boilers Neva Lux, the price depends on the model. Single-circuit models are cheaper, double-circuit models are more expensive. For example, one of the most popular models of this series, the gas boiler NevaLux 8618 is in demand due to its low price and the following qualities and capabilities:

The popular single-circuit gas boiler Neva Lux 8618 for wall installation it is intended only for heating, but if necessary, the organization of hot water supply is possible using an indirect heating boiler. The model has a maximum simple design with non-volatile automation. The price of this boiler is the lowest of the entire model range.

Model Neva Lux 8224

Wall mounted boiler gas Neva Suite 8224 is designed for heating rooms up to 250 m2. The boiler is equipped with a unique water-cooled combustion chamber. High precision of temperature setting is provided by a special microprocessor. In terms of their parameters, the boilers of the Neva company are not inferior to foreign samples, the only difference that the gas boiler Neva Lux 8224 has is the price of reviews of many owners confirms this.

This model has two heat exchangers. Applied for DHW plate heat exchanger, and for the heating circuit is used copper heat exchanger built into the gas boiler Neva Lux of this series.

The model can use a PC for diagnostics and configuration, as well as remote control.

On the popular gas boiler Neva Lux 8224, reviews found on the network fully confirm the excellent consumer qualities of the device. Many reviews emphasize that the price for the Neva Lux 8224 gas boiler is relatively low with high performance. This is a wall-mounted double-circuit model, which is designed for heating rooms up to 240 m2. The unit provides hot water supply (DHW).

Constructive components

From a technical point of view, the wall-mounted gas boiler Neva is flawless. It implements all technical achievements in heating engineering, as well as developments in the field electronic control heating circuits.

Structurally, the gas double-circuit boiler Neva consists of the following interconnected systems:

Advertising on the Internet and on television calls for buying a gas double-circuit wall-mounted boiler Neva Lux, as the most economical, cheapest, convenient, etc. Can you believe these advertisements and reviews on the web pages of online stores?

How to buy a gas boiler and not be mistaken?

A buyer, choosing, for example, a wall-mounted gas boiler Neva Lux 8224 reviews on which may be untrue and written to order, must understand that they cannot be relied on. Indeed, it often happens that the design is perfect, the equipment is the most modern, but poor-quality assembly impairs all the advantages. For example, in 2014, the Neva Lux 8224 wall-mounted gas boiler is characterized by reviews as a naturally raw product, which is called - modify with a file.

Such a review appeared due to poor-quality assembly, as well as due to the unstable operation of the boiler due to a flaw in the coaxial chimney, which was not specified in the instructions. Of course, at present, the Neva company has taken certain measures and eliminated the shortcomings in the assembly of the product. There are practically no complaints about the Lux 8618 model and you can buy a single-circuit wall-mounted gas boiler Neva Lux, with delivery to any region, in specialized stores.

For mounted gas boilers, prices depend on their power, type, configuration and demand for the device. For example, the Neva Lux double-circuit wall gas boiler offered by many online stores, whose price at a power of 24 kW, but with different configurations, ranges from 31,800 to 35,600 rubles.

The most expensive boiler Nevalux 8224 is equipped with a built-in storage boiler... When choosing a boiler for heating, if you are satisfied with the Neva Lux 8224 gas boiler, the price of reviews is best obtained from real owners or specialists in gas equipment.

Malfunctions of the gas boiler Neva Lux

The simplest single-circuit and non-volatile model Neva Lux 8618. It completely lacks electronics. A simple gas boiler Neva is very reliable.

The most common malfunctions characteristic of this boiler are as follows:

• very low level of gas pressure in the line;
• low pressure due to the presence of air in the circuit;
• extinction of the burner flame;
• mechanical damage to the boiler or heating circuit.

The presence of a control unit with a microprocessor in the Neva Lux 8224 model allows for self-diagnosis of malfunctions that have arisen during the operation of a gas boiler. The electronics that are installed on the gas double-circuit wall-mounted boiler Neva Lux displays malfunctions on the display in the form of an error code.

Display error codes

Any technical device may break. The Neva Lux boiler of any model is no exception. Its stoppage may be due to the failure of any element in the control system or their incorrect operation. The control system displays the error code, and knowledge of the error code makes it easier to detect the malfunction.

The following error codes are displayed:

Error 01. This error indicates unsuccessful ignition. The boiler does not turn on:

Error 02. Overheating of the coolant. The boiler does not work:

Error 03. Lack of traction:

Error 04. Low water pressure in the circuit:

Error 05. Failure of the heating system temperature sensor:

Error 06. Failure of the DHW temperature sensor:

• sensor malfunction;
• open or short circuit of the electrical circuit between the sensor and the electronic board.

Other malfunctions that cannot be shown on the display. For example, if there is no electricity, the boiler will not turn on and will not work. Of course, if you establish, then such a nuisance can be avoided.

Fuse blown. A fuse rarely blows for no reason. If, after replacing it with a similar fuse, it blows again, then you need to find the cause. In no case should you install bugs that can damage the entire boiler electronics.

If the electronic board was accidentally flooded with water. It is necessary to turn off the boiler from the network and dry the board with warm air from a hair dryer. Sometimes there may be a malfunction of the electronics. To reset to the initial position, press the RESET button. If it does not help, then disconnect the boiler from the network for a few minutes and turn it on again.

If you smell gas, find and repair the leak immediately.

If you cannot fix the leak yourself, it is recommended to call the gas service by emergency number 104.

Codes of errors and malfunctions of boilers Neva Lux

The shutdown of the Neva Lux boiler caused by a failure or improper operation of any of its systems is accompanied by the corresponding error code flashing on the control panel display, which makes it easier to detect the malfunction.

Error codes, possible causes and troubleshooting methods

Error 01- Problems related to unsuccessful ignition. The boiler is not working.

Gas supply faults - Open the shut-off valve on the gas pipeline, or check the pressure in the cylinder (LPG.)

Ignition plug defective - Replace spark plug.

Spark plug electrical circuit interrupted - Check electrical circuit and contacts.

Incorrect gap between spark plug and burner section - Set gap (5 + 0.5 mm).

The spark from the spark plug electrode jumps onto the combustion chamber shell - Bend the combustion chamber shell at the place where the spark plug is installed.

The spark plug is dirty - Wipe the spark plug from dust and degrease.

Ionisation plug defective - Replace plug.

Ionization plug electrical circuit interrupted - Check electrical circuit and contacts.

Incorrect gap between ionization plug and burner section - Set gap (3 + 0.5 mm).

Ignition transformer defective - Replace the Neva Lux boiler ignition transformer.

The electrical circuit of the ignition transformer is interrupted - Check the electrical circuit and contacts.

Burner block clogged - Clean burner block.

Gas regulator electrical circuits interrupted - Check electrical circuits and contacts.

Error 02- Overheating of water. The boiler is not working.

Clogged heating system - Clean the heating system.

Thermal relay defective (normally closed at temperatures up to 90 ° C) - Replace the thermal relay.

Filter in heating system clogged - Clean filter.

Defective or incorrectly installed, bypass valve - Check that the bypass valve parts are correctly installed and replace if necessary.

Defective pump or vent valve - Replace pump or vent valve.

Defective pump relay on the electronic board - Replace the electronic board.

Gas regulator not working - Replace gas regulator.

Gas regulator not adjusted - Adjust gas regulator.

Thermal relay (overheating sensor) electrical circuit broken - Check electrical circuit and contacts.

Error 03- Lack of traction. The Neva Lux boiler does not work.

Chimney or air duct blocked - Find out the cause of the blockage and remove it.

The tightness of the pressure switch tubes is broken - Replace the tubes.

Violation of the electrical circuit of the pressure switch - Check the electrical circuit and contacts.

The pressure switch is faulty (the contacts of the press switch must close at a pressure drop of 130 Pa) - Replace the pressure switch.

Condensation in the pressure switch tubes - Remove condensation from the pressure switch tubes.

Violation of the electric circuit of the fan - Check the electric circuit and contacts.

Fan defective - Replace fan.

Error 04- Insufficient water pressure in the heating circuit. The boiler is not working.

Reduced water pressure in the heating circuit - Bring the water pressure in the heating circuit to the recommended value.

Air lock in the heating system - Open the air bleed valve.

The water pressure sensor in the heating circuit is faulty - Replace the sensor.

Defective pump or vent valve - Replace pump or vent valve.

The electrical circuit between the pressure sensor and the electronic board is broken - Check the contacts of the connectors in the control unit and on the sensor and the sensor's electrical circuit.

Error 05- Failure of the heating circuit temperature sensor. The boiler is not working.

Heating circuit temperature sensor defective - Replace the heating circuit temperature sensor.

Electrical circuit "temperature sensor - electronic board" broken - Check the electrical circuit and contacts.

Error 06- Failure of the DHW temperature sensor. The Neva Lux boiler works only in heating mode.

DHW temperature sensor defective - Replace DHW temperature sensor.

The electrical circuit between the DHW temperature sensor and the electronic board is broken - Check the electrical circuit and contacts.

Error 07- Malfunction of the gas regulator modulator coil. The boiler is not working.

Broken gas regulator modulator coil - Replace the gas regulator (modulator coil resistance 80 Ohm).

Electrical circuit "modulator coil - electronic board" broken - Check the electrical circuit and contacts.

Malfunctions of boilers Neva Lux without an error code

Neva Lux boiler does not turn on

Lack of electricity - Contact the electricity service.

Fuse blown - Replace the fuse on the board.

Water ingress on the electronic board - Dry the board with warm air or leave it for two days in a dry place to completely evaporate the water.

Failure of the electronic board (RESET does not help) - De-energize and restart the boiler or replace the electronic board.

Pops in the burner

The minimum gas pressure and ignition power have been set incorrectly - Adjust the minimum gas pressure and ignition power.

Insufficient air supply - Clean the air intake pipe or duct.

The spark from the spark plug electrode jumps to the edge of the burner section or to the shell of the combustion chamber - Bend the spark plug or bend the shell of the combustion chamber, allowing the spark to slip into the area of ​​the holes in the nozzle of the burner section.

Dirty burner block - Clean burner block.

Gas smell

Gas leaks - Check the entire gas circuit for leaks, eliminate gas leaks.

Little or no hot water output

Insufficient water pressure at the inlet to the hot water supply - Contact the housing and communal services service.

Water filter clogged - Clean the filter on the DHW line.

Heat exchanger clogged - Clean the heat exchanger.

The set temperature of hot water is not maintained (too high)

High inlet water temperature - Increase the DHW flow or dilute hot water cold, preventing a decrease in the flow through the DHW circuit.

Small water flow through the DHW circuit - Increase the water flow through the DHW circuit.

Neva Lux boiler does not work in heating mode (but works in DHW mode)

Room thermostat jumper missing - Install the room thermostat jumper.

The room thermostat jumper connecting the contacts is faulty - Replace the room thermostat jumper.

Room thermostat defective (if a thermostat is installed) - Replace the room thermostat.

The temperature of the water entering the heating system is lower than the set

Heating circuit temperature sensor defective - Clean the temperature sensor from scale (if using an immersion temperature sensor), or replace the temperature sensor.

The boiler is in standby mode, the display shows the symbol "- -" and the boiler does not respond to pressing the control buttons

The supply voltage is outside the range of 190 ÷ 250 V - Restore the supply voltage within the range of 190 ÷ 250 V. After 30 seconds, the boiler will automatically start in the mode in which it was before the voltage went beyond 190 ÷ 250 V.

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OPERATION AND REPAIR OF BOILERS