Geyser Neva does not ignite, no spark

Construction of the NEVA gas water heater and principles of operation

Water enters the inlet of the water block, then pressure is created in the block, there is an automatic flow sensor in the block, which informs the control unit about the presence of pressure. also, if there is pressure in the water block, as a rule, mechanically, depending on the column, the gas valve opens. The device has a battery compartment, usually located in the lower part, which directly supplies the control unit, which, when pressure is present, causes the electric ignition to turn on and not go out.

Next, the solenoid valve is opened, through which gas passes to the burner, after which the ionization electrode detects the fact of gas combustion and reports this to the power supply, after which the power supply turns off the electric ignition. Water is heated by heat exchange; the heat exchanger itself is usually located at the top of the column. This information is needed for a general understanding of the operating principles of most gas water heaters, and it in turn gives a little understanding of the principle of their repair.

Possible malfunctions of geysers Neva Lux

Malfunctions of geysers Neva Lux and methods for eliminating them

There are no spark discharges between the spark plug and the pilot burner after water begins to flow through the device

— Insufficient water flow (less than 2.5...3 l/min) to turn on the NevaLux geyser — Fully open the cold water shut-off valve, increase the water flow using the hot water tap or move the tap handle 15 to the extreme left position.

Neva gas water heater does not light up

The main reasons may lie in various mechanical and electrical parts of the unit. As a rule, such malfunctions of the Neva gas water heater can be eliminated by replacing the worn or broken part yourself, then the device will turn on correctly. But if you cannot solve this yourself, and the device has a valid warranty, then it is best to contact service centers.

Problems in the water circuit

If there is sufficient water pressure and the column does not ignite, you should pay attention to the following tips:

Important! Be sure to shut off the flow of gas and water.

Very often the problem can occur in the rubber membrane in the water block. The membrane creates pressure on the piston, which in turn supplies power to the control unit, the reason is usually a diaphragm rupture. This can be eliminated by simply replacing this membrane. Membranes are quite cheap. Such repairs are quite simple; to do this, you need to remove the casing, dismantle the water block, and disassemble it.

First you need to make sure that the problem is true, the membrane will be torn. Also, before replacing the membrane, it makes sense to clean the water block from plaque and dirt, and also lubricate all moving elements of the block with a suitable lubricant. Next, replace the old membrane with a new one, suitable for the specific speaker model. Assemble the water block and stop it in place. Turn on the water and gas supply and check the operation of the device.

The issue may also be a filter that may be located at the water inlet, which must be cleaned periodically as it becomes dirty. The filter removes impurities that may be contained in the water, and the device will burn and not go out.

Note! The mechanism is turned on when there is sufficient water pressure, but if the pressure is not sufficient, then you should check the water pressure directly in the tap, and if it is not sufficient, then the issue should be resolved by the relevant authorities; if the house is private and water is taken from a well, then it is necessary to solve the problem with pump.

Heat exchanger tubes, as a rule, are also susceptible to blockages. You need to check for these. In case of blockage, it is necessary to clean the tubes, as well as the heat exchanger. To clean the tubes, fill them completely with citric acid and leave for an hour. The heat exchanger should be washed with a solution containing a cleaning agent.

Such solutions can help if the Neva malfunctions in parts responsible for heating and water flow.

Problems in the gas circuit

Common problems in the gas circuit are usually related to contamination of the burner or heat exchanger. To solve the problem, you should clean the gas burner, as well as the heat exchanger; to do this, you should rinse all parts with a solution containing a cleaning agent, and clean the burner with improvised means. The heat exchanger should be cleaned to improve heat transfer.

Note! Cleaning the burner from soot should be carried out in the open air or in a room that is easy to clean, like a bathroom, since soot very heavily clogs the room during cleaning.

Problems in the ignition system

The problem may be related to spark generation. To do this, you need to find out what exactly the problem is. If there is no specific spark, then you should try replacing the battery. Not all Neva speakers are equipped with electric ignition, but Neva Lux 5513, 5514, 5611 are not included in this statement.

If the burner ignition consists of a piezoelectric component, then it is necessary to clean it with wire.

Security problems

A very common problem is the traction sensors. If it is faulty, the gas will not ignite. There are also problems with various sensors that the speakers are equipped with. Self-repair of these sensors, without certain knowledge, is not recommended. also, if one or another sensor malfunctions, it makes sense to replace it, since repairs may not always be effective.

How to understand why the Neva gas water heater does not light up?

There are situations when hot water is urgently needed, but as luck would have it, the water heater does not turn on. Usually, if you have an automatic water heater, you just need to open the tap and hot water will flow almost immediately. But when problems arise, no matter how much you open and close the tap, the area does not light up. It's a shame.

But in order to decide to invite a specialist, or to fix any “trifle” yourself, you need to understand the cause of the problem.

The column lights up on the second or third try

Sometimes you have to turn on the device several times so that it does not turn off on its own. The Neva gas water heater does not light up, what are the reasons?

Reason 1. Batteries. In automatic speakers, the reason lies in the batteries, the charge of which is only sufficient to ignite the fuse, but not for normal operation. When the batteries start to run low, the clicks are often “idle”.

Reason 2. Filters. They become clogged and water flows poorly.

Reason 3 . Weak traction. In this case, the column lights up a little later and with a bang. In such a situation, a ventilation valve will help out.

Reason 4: The spark plug or microswitch is misaligned. The latter is checked using an ohmmeter. If it turns out that the required values are not achieved, the part is replaced.

The spark plug is installed with a gap of five mm, having first loosened the screw. After this, the column starts on the first try.

The Neva gas water heater does not turn on: the igniter (wick) goes out

The fact is that the igniter, which should ignite the burner, ideally works continuously after switching on. It heats up the thermocouple that leads to the burner, and it lights up. But in case of certain malfunctions, the platform does not light up, and turning off the burner using sensors serves as protection. Otherwise there is a risk of gas poisoning.

To understand the reason for the attenuation, let’s look at how a thermocouple works. The thermocouple powers the solenoid valve, producing electromotive force. This happens when it is heated. When it begins to generate electromotive force, the rod enclosed in the valve begins to move and admit gas into the burner. But when the igniter goes out, the part stops heating, and the rod fires in the opposite direction: the valve closes and gas does not enter the burner.

Why does the pilot light not light up? Sometimes the insulation of the thermocouple conductor, consisting of an alloy of several metals, is broken, the conductor comes off, and the thermocouple does not work. Unfortunately, a soldering iron will not help here. The soldered part will not conduct current. You'll have to change the unit.

Attenuation of the wick also occurs due to a strong draft, or when gas does not flow. To make sure everything is fine with the part, test it using an AA battery. Connect the igniter to it. If it lights up, it means it’s working.

Problem with poor air flow

The problem is usually associated with a blockage in the exhaust of combustion products; soot may accumulate on them; there may also be a fault in the draft sensor. It is necessary to clean the combustion chamber and combustion product collector. The problem may also be your chimney.

Note! At home, it is possible to clean only the visible part of the chimney; specialists should clean the rest of the chimney. To check the air flow, you can use a lit match; to do this, you need to bring it to the window on the panel. When the flame deviates, we can conclude that there is an air flow.

Conclusions and useful video on the topic

How a geyser works: the principle of operation of the device:

How to correct the position of the flame adjustment sensor:

Analysis of two not obvious reasons why a geyser can turn on and immediately go out:

How to diagnose a problem by removing the heater casing:

The main problems with heater damping are listed. In most cases, they do not depend on the device model or manufacturer. Some you can handle on your own. But if you are not sure about this, it is advisable to contact a service center or gas service.

Would you like to talk about your personal experience in diagnosing the cause of speaker attenuation and how to repair it yourself? Or do you have questions that we did not cover in this material? Write your comments, participate in the discussion - the feedback form is located below.

If you are faced with a water heater breakdown, do not panic - our article will help. Malfunctions of the Neva gas water heater can occur for various reasons, but typical ones can be identified. We'll tell you how to repair Neva models at home.

Important! If your equipment is under warranty, do not disassemble it yourself, otherwise you will lose free service.

No spark

To understand why there is no spark, you should pay attention to the ignition. The problem may be a malfunction of the electric ignition or piezo ignition. To solve this problem, it is necessary to inspect the electrical parts to make sure that the ignition is working.

Note! In the event of a malfunction, the electrical parts should be replaced, since it was previously said that if there is a lack of necessary knowledge, it is not worthwhile to repair the electrical parts yourself.

Tips for preventing problems at geysers

For successful, safe and long-term operation of Neva speakers, you must adhere to the manufacturer’s instructions, as well as a number of simple rules, among which the most important point is the timely replacement of filters.

Note! In addition, the chamber should be cleaned and the igniters inspected from time to time. Problems that can be prevented, namely problems with clogged heat exchanger tubes, as well as membrane wear, can be solved by installing additional water filters at the inlet.

If you identify any difficulties or questions in the operation and setup of geysers, it is advisable to immediately contact qualified technicians who will quickly and accurately diagnose the breakdown and set up the device. However, there are errors that you can eliminate yourself. All these questions are answered in this article.

Posted by Niels · September 1, 2016

Let's consider one of the first and most common problems of geysers, a weak spark discharge or its absence. Such a malfunction of the geyser is quite common and it does not appear a year or two after using the equipment, but after a few months.

Symptoms are usually the following. Just yesterday the gas water heater worked like a clock, but today it suddenly didn’t turn on. You close the hot tap, open it again - the column is working. Then, every day more and more such manipulations have to be done (opening and closing the tap). And then finally the moment came when it stopped working completely. Then just call a technician or fix the problem yourself.

Prevention measures

Note! In addition, the chamber should be cleaned and the igniters inspected from time to time.

Problems that can be prevented, namely problems with clogged heat exchanger tubes, as well as membrane wear, can be solved by installing additional water filters at the inlet.

Gas water heater malfunction and causes

Having removed the gas column cover and opened the tap, you see that there is no spark discharge. So why did the spark disappear, what is causing the malfunction?

1. Reason not related to failure of any part. 1.1. Insufficient water pressure.

First, check the position of the temperature control knob, which is responsible for the pressure of the water flow at the inlet of the gas water heater. At low pressure the column will not turn on. Turn the handle counterclockwise all the way to the far left, and then open the tap. If the dispenser starts working, there is probably low pressure in the suitable pipes and the cause should not be looked for in the dispenser.

1.2. The appearance of scale in the radiator.

When using hard, calcareous water, scale may form on the walls of the heat exchanger, which also affects the creation of the pressure necessary for the operation of the gas water heater. To remove scale, you will need to remove the heat exchanger; note that you will have to disassemble almost the entire column. Prepare a 10% solution of citric acid: stir 100 grams of lemon in one liter of warm water. Pour into the heat exchanger tubes and leave for 15 minutes. Drain the solution and rinse thoroughly with water. It is recommended to carry out cleaning at least once a year.

2. Souring and immobility of the rod.

Oxide may form on the rod located next to the microswitch. This in turn affects the mobility of the tongue and the closing and opening of the circuit contacts. To clean the rod, you need to remove the microswitch and release the fixed tongue.

3. Fault in the electrical circuit between the microswitch and the control unit.

Also, a malfunction of the gas water heater due to the lack of a spark can be caused by a violation of the circuit between the switch and the control unit. To do this, check the terminals connecting them and the switch wires. Possible oxidation of contact points.

Video on geyser repair

A small addition. I found a very good video on disassembling the water block of a gas water heater. The location of components and the causes of malfunctions are shown in detail.

Be sure to check it out here:

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Device and principle of operation

In many cases, fixing a problem with automatic ignition or with other components of the device is quite easy, and you don’t even have to seek the help of professionals. However, in order to understand why the Neva geyser does not work well, it is worth studying its structure.

The system includes:

housings (for wall-mounted models - supplemented with mounting loops);
heat exchangers made of copper;
water circulation units;
burner complexes;
concentrators of gaseous combustion products (diffusers);
pipes for connection with the chimney;
water supply tubes;
igniter electrode;
faucet regulating the passage of water;
segment for batteries;
a system that regulates heating power and fuel consumption;
ionization fire indicator.

The typical method of operation of a gas burner is very simple. As soon as the water tap supplying hot water is opened, the pressure of the jet begins to act on the membrane of the control unit. Under its pressure, the rod moves, which opens the gas valve, and the contacts of the switching device close. Through the electrical circuit, current from the batteries begins to flow to the controller. The electronics sends two signals at once: one by one, the valve opens, allowing gas to pass through; the second, an electric spark appears on special electrodes.

As soon as the fire detector detects characteristic ionization, it sends a signal to the central automation. It stops initiating the spark. Heating is carried out in standard operating mode. The mixer valve is closed. The membrane immediately moves back, and the gas passage valve closes.

At this moment, the limit switch is activated, stopping the flow of current to the controller. Without power supply, the electromagnet remains. Since no gas enters the burner, it should go out immediately. The valve is connected to the same circuit as the draft meter. When this draft disappears or is weakened excessively, the heated sensor opens the circuit, thereby stopping the power supply to the electromagnet and the passage of gas to the burner.

Problems and causes of their occurrence

Knowledge of the basic principles of geyser design is very useful. But it is important to take into account that faults in each model may be different; they are determined by the characteristics of the technical system and design weaknesses.

Model 4510 M is not superior in reliability to most Russian gas systems, that is, it is noticeably inferior to foreign analogues. Most often, users complain that the speaker turns on poorly or does not turn on at all. The inability to turn on the column may be due to the fact that the required water pressure is not provided.

Another problem is that the handle that regulates the rate of water flow is incorrectly set. It is very easy to fix such a defect. The solution simply comes down to moving the lever to the left position, which sets the most intense passage of liquid. Another possible failure is that the stem of the unit that regulates the flow of water remains motionless when the tap is opened.

The reasons for this condition are:

stretched membrane;
rupture of this element;
fracture of the plate containing the rod.

Occasionally it is discovered that the gas rod does not work. Such a problem cannot be ignored, because it does not allow the water rod to be moved to the right place. A sign of such a breakdown is that the column does not start working when the water is turned on, it lights up only after several attempts, and it can also be difficult to turn it off.

Other problems specific to this speaker model:

switch damage;
open power supply circuit of the thermal relay;
damage to solenoid valves or relays;
there is no spark created by the electronic unit;
dead batteries.

Problems may also occur with models from the Lux group. Quite often there is a situation when a spark does not run from the candle to the fuse after the water has passed through the device. As with the previous model, this can be caused by low water pressure. If its adjustment fails, if the column still does not light up and does not heat the water, it is necessary to clean the filter systems and heat exchanger. The last measure is to eliminate the cause of low liquid pressure, sometimes by contacting water utility structures and other relevant organizations.

In addition to installing working batteries, it is important to monitor the polarity of their placement. It happens that water flows, a spark jumps, but the flame still does not ignite. The probable cause is saturation of the gas line with air.

Only employees of official service organizations have the right to fix such a problem. The owners themselves can only fully open the shut-off valve of the gas pipeline.

In some cases, the burner burns sluggishly, the fire in it is elongated and smokes. The cause appears to be the accumulation of dust particles on the nozzle or internal structures of the burner. Cleaning helps to cope with this condition. When the column turns off without permission, it can be assumed that the draft in the system is insufficient.

In such a situation, you will have to clean the chimney and check its tightness.

If such measures do not produce results, it will be necessary to examine the electronic control units and main sensors. But sometimes the burner goes out for another reason - due to an excessive increase in water temperature.

In such a situation you need:

turn off the supply to the hot water circuit;
re-ignite the column after 60-120 seconds;
when re-igniting, set a lower warm-up temperature by setting a reduced gas flow rate or an increased water emission.

When a gas heater clicks as if a spark is being formed, but there is no ignition, the defect may be associated with the insulation of the spark plug or with depressurization of the cable connecting the burner and the control unit. All these moments cause an electrical breakdown on the housing and must be eliminated immediately.