Cotton when turning on the gas water heater is one of the most common problems faced by owners of gas equipment. They may not be very loud at first, however, over time, the noise increases. Cotton is a kind of microexplosion of gas in a column, and if you ignore the problem for a long time, then the power of the microexplosions will gradually increase along with the noise, which can subsequently cause a full-fledged explosion. Therefore, in such situations, it is necessary to hurry up with an appeal to the master.
Most often, cotton when the gas water heater is turned on occurs in the columns of the old model, while new models are less prone to claps. The pop is heard because the gas on the main burner takes too long to ignite. In this case, before it lights up, the gas has time to spread strongly. In normal working condition, the gas water heater should ignite smoothly, that is, there should be no pops and flashes.
Reason 1 - Poor cravings
The combustion products must be discharged through the chimney. When they are hot and there are no obstructions, it happens quickly. If carbon dioxide and steam have time to cool, they can sink back into the column and contaminate the gas-air mixture.
Traction check
To check the intensity of the draft, you need to bring a burning match or lighter to the chimney hole (also in some models there are special control holes for this). The flame should actively deflect towards the water heater. If it stays in place, it indicates poor traction.
The main reason for poor draft is chimney clogging. Over time, soot accumulates in the chimney, which narrows the diameter of the pipes. Debris can also get into the chimney from above. If the blockage is small, you can remove it manually. If the chimney is clogged much higher up the riser, you need to call the utilities for cleaning.
Also, if an active hood with a fan is installed in the kitchen, then the exhaust gas can be drawn into it, in the place in order to go up. It is necessary to turn off the propeller when the water heater is running.
If metal-plastic windows are installed in the room and they are closed, then the lack of incoming air can interfere with the draft. For safety reasons, you should use a gas water heater only with an open window (or with a plastic window open for ventilation).
The gas water heater makes noise, whistles, buzzes: what to do
The gas water heater makes a noise? It is necessary to find out the reasons: they depend on whether the equipment is new or has been in operation for several years. To find out why the speaker buzzes, hisses or buzzes, we will understand its structure and features of its work.
Material content:
The principle of operation of the gas column
The column or flow heater, as it is called, is a metal box (casing). Two pipes for supplying water and gas are connected to it. The main structural elements are:
- Radiator (water flows through it).
- Main and pilot burners (used to heat the liquid in the radiator).
When the user opens the mixer, the valve opens and allows gas to flow into the burner. It ignites, the gas heats up the heat exchanger. Combustion products are discharged through the chimney and ventilation.
Causes of noise
Due to the very principle of the technique, you may hear a little noise, it crackles. Sounds can be amplified if the room is not well ventilated. There is nothing wrong here.
Does the appliance make a sound when you turn on hot water or when heating? When taking in water, you can feel vibration because the flow passes through pipes, turns, passes through obstacles. To reduce the noise level, you can adjust the water supply knob. While scrolling it, listen: as soon as the sound vibrations decrease, leave it in this position.
A pop is heard at startup
Do you run the technique and hear a pop? Does the device twitch and vibrate? This means that there are problems with the gas supply. At start-up, fuel accumulates in the test section: when the amount of air or gas is correct, no popping should be heard.
Excessive gas leads to a volumetric explosion when the fuel hits the wall hard at the bend. This can happen with overpressure in the system.
Such problems can even lead to a breakdown of the chimney. Therefore, contact the service center or try to fix them yourself.
- Disconnect gas and water supplies.
- Remove the equipment cover: pull the handle towards you, unscrew the two screws.
- Inspect the fuel delivery system and burner. Clean the parts from dirt. How to clean a gas water heater, read the previous article.
- Unscrew the two screws on the burner tab.
- Inspect the condition of the injector. If it is clogged, clean it.
The column buzzed and rustled
The main reason is poor cravings... To check it, light a match and bring it to the hole. If the flame is deflected to the side, as if from a stream of air, the draft is in order. If not, the chimney channel is clogged with soot and carbon deposits, which are generated during the combustion process. You need to clean it up.
Poor ventilation also contributes to the amplification of noise. This often happens after installing plastic windows. The bags are so tightly sealed that natural ventilation becomes impossible.
What to do if the appliance cracks? This is possible in case of clogging of the burner nozzles (jets)... Disassemble as described above and clean them.
If your column is turned on by electric ignition, the reasons may be as follows:
- Such devices operate on batteries. When they are discharged, the fuel ignites poorly or does not ignite at all. Clicks may be heard. In this case, replace the batteries.
- The flow control sensor is defective. Most often, its contacts are oxidized under the influence of moisture. You can try to clean the contacts, but it is better to replace the sensor.
- Spark does not ignite. The candle, which is responsible for the ignition, has been displaced, so the process does not end. Reinstall the plug and resume the process.
- The ignition retarder does not work. Remove the part and shake. In this case, you should hear the rolling noise of the ball in the body. If nothing is heard, the ball is stuck or misaligned. Wire it back in place.
New equipment thundering? Perhaps the reason is not in the boiler, but in an installation error. To find out, inspect all connections, correct connection. It can also be:
- Depressurization of the air duct... Air enters not only through the main hole, but also through the hole. Therefore, the noise is amplified.
- Incorrect burner placement... Perhaps it has shifted and cannot cope with the combustion of the entire volume of gas. You need to install it in place.
Gas boiler whistles
If the product whistles and beeps, you need to find out where the sound is coming from. What to do:
- Shut off the gas supply.
- Open the mixer while it is hot.
- Has the whistle intensified? This means that the problems lie in the water path. The main reason is the deposition of scale on the parts of the heat exchanger or on the pipes, blockage. It is necessary to clean all the elements in order to restore the performance of the equipment and eliminate the cause of the whistle. The reverse flow of water can clear the pipes from blockages.
- If the whistling sound disappeared when opening the tap, the matter is in the gas path. Probably a defect in the valve that controls the strength of the flame. A whistle may appear when the power of work is increased. Try turning the knob until the sound disappears. Does not help? Then the matter is in the blockage of the tract. It is necessary to disassemble and clean the device.
If you notice similar problems in your technique, you can try to deal with the problems yourself. But it is better to contact a service center, especially with a valid warranty card. Employees will repair or remove faulty equipment.
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Reason 2 - Batteries are empty
If you have an automatic column that lights up when you turn on the water (for example, Vector JSD 20-W), then the reason that the water heater bangs when you turn on the water may be discharged batteries.
If the batteries are low, there is not enough electricity to quickly create a spark to ignite. In this case, the crackling sound is longer. During the time until the flame is ignited, too much fuel has time to accumulate in the working area.
Replace the batteries with new ones. You should purchase expensive alkaloid models from popular manufacturers.
Column with automatic ignition system
In modern models, ignition is carried out automatically. Thanks to this, the owner manages to save 10m3 of gas. But improved performance makes equipment more complex and less reliable. In it, the ignition is controlled by an electronic control module associated with microswitches.
Failures rarely occur in the operation of such a system, but there is a certain risk. In this case, you will have to find out why cotton occurs when the gas column is turned on. Repairs can be expensive. This is the main disadvantage of such devices.
If the Neva gas column clicks, then you must perform the following steps:
- Check the charge of the batteries supplying the module. An electronic ignition system is in such equipment as the Neva gas water heater, Oasis and others. If the battery is discharged, it will not work when fired up. Then you can hear something hiss or crack. To cope with the problem, it is enough to change new batteries.
- Evaluate how well the micro fluid pressure regulator works. The manufacturer installed this element in the column so that it sends signals to the control module. It is activated when the water supply starts and there is a need to ignite the gas. If there is a problem with the micro pressure regulator, the commands will be incorrect if water gets in. Because of this, gas water heaters make noise. To find out if there is a problem, you must use a multimeter or ohmmeter. With its help, indicators should be measured. If they do not meet the requirements, the system is out of order, and because of this, the gas water heater pops. You can fix the situation by changing the old part for a new one.
- Find out if the gas ignition device is correctly positioned or not. If a pop occurs when the gas column is turned on, the reason may be in this element. It can change its shape under the influence of sharp temperature changes, because of this, the dimensions of individual parts of the structure change. This part is held in place by a single screw, so it is not difficult to fix it. To do this, loosen the screw and align the candle. It is this element that provides the creation of an electrical spark. Modern candles rarely break, as they are designed for long-term operation. If the ignition device has changed its nominal position, it is necessary to correct it so that the spark gap is 0.40-0.50 cm. After that, it is necessary to check that the ignition does not occur with a delay.
- Make sure that the ignition retarder is in good working order.Quite often, during the operation of the water heater, gas begins to accumulate if the valve to slow down the flow of liquid is faulty. The reason is the usual breakdown or incorrect settings of the element. This part of the instrument is a small metal ball that overlaps the conductive valve in the pressure regulator. If the ignition retarder is normal, then it will move freely under the cover and will not be fixed. To find a problem, it is enough to dismantle the assembly and shake it. In this case, the ball should freely hit the walls of the body. If the gas water heater pops strongly when the water is turned on, the ball may be stuck. To move it, you need to use a thin soft metal wire passed through the hole in the channel. Debris should also be removed, but proceed with caution. If there are no good reasons, experts advise not to do the cleaning again.
Attention! Upon completion of the repair work, check the tightness of the connection of the elements. Additionally, it is better to use gaskets or sealant.
If cotton still occurs when the gas column is turned on, it is necessary to check the water supply sensor. It is installed on the inlet circuit. This element provides a signal to the control unit that there is liquid in the pipe. This ensures timely ignition of the water heater.
Reason 3 - Clogged nozzle
In semi-automatic models with piezo ignition, the main flame is ignited from the wick (the reasons why the wick of the Demrad gas column does not ignite are described here). If it is clogged or located incorrectly, then the intensity of its combustion may not be enough for timely ignition.
It should be cleaned. For this, the casing is removed and the orifice of the jet is cleaned with a thin wire. You should also check that it is correctly positioned and, if necessary, move it closer to the burner. When the wick is on, its flame should go over the edge of the burner.
Troubleshooting tips
Why doesn't the gas water heater light up? Proper operation of gas equipment begins with a competent choice of systems, since each manufacturer of gas water heaters has its own "pain points":
- for example, Bosch's thermocouple and igniter are initially weak. Why does the wick in the Bosch gas water heater go out? After 3-4 years of operation, the thermocouple needs a global cleaning;
- the Russian water heater Ladogaz VPG 10 is sensitive to water pressure;
- the popular "state employee" OASIS quickly starts to junk with poor water quality. All these points and the upcoming operating conditions must be taken into account when purchasing equipment.
If troubles have begun, you need to act as follows:
- stop using the column;
- read the instructions to understand the possible causes;
- call a gas service specialist.
Gas equipment maintenance standards require hardware fault testing, and a specialist must be authorized to service networks.
Therefore, in case of any problems with speakers and boilers, the services of home craftsmen are not the best way out. Entrust repair work only to employees of professional certified organizations for the maintenance of gas networks and equipment.
Here you can watch a video on how to repair a gas column igniter yourself:
See also Phones for consultation 29 Nov 2020 kasjanenko 391
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Discussion: 2 comments
- 5master5 says:
02.12.2018 at 16:59An extensive and detailed instruction on the cause of problems with the gas water heater. But, there is only one answer - turn off the gas and immediately call the gas service. Another tip is to conclude a contract for the maintenance of gas equipment.
Reply
- Serge says:
02/29/2020 at 18:50
Pi @ op
Reply
Causes of gas column pops
For automatic gas water heaters:
The automatic column has an electric ignition from an electric discharge. A spark is generated from it, which ignites the gas on the main burner. This spark should be between the spark plug and the main burner. If the electric candle is faulty, then an electric discharge can occur at the end of the burner or on the supply wire at the bottom of the candle, so the gas column slams, since the spark appears in the wrong place and, when it ignites the gas, it has time to accumulate inside the combustion chamber.
• weak electric ignition discharge.
In a column with an automatic type of ignition, batteries are installed. If they sit down, then the discharge at the spark plug becomes weak, and the gas supply to the burner remains the same. The result is strong cotton.
For geysers with piezo ignition:
• the wick burns to the side.
When the ignition wick is clogged with dirt and dust, the flame may burn weakly or away from the burner. In this case, the fire does not reach the combustion chamber and gas popping occurs.
For any gas water heaters:
• the occurrence of pops may be the result of long-term operation of the device without carrying out its maintenance, which includes a detailed inspection, thorough cleaning, prophylaxis, adjustment of all parts of the equipment. If maintenance is carried out on time, annually, many problems can be avoided.
