Slamming when you turn on the floor gas boiler

Conclusions and useful video

Find out why your gas water heater turns on with a pop and how to fix it in the following video:

There are a lot of reasons for the extraneous sounds when you turn on the speaker. Most can be diagnosed yourself and try to fix the problem on your own. If the cause of the breakdown you have not been able to determine, then the only solution in this situation is to contact experts in repair of gas equipment.

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gas boiler making loud exploding noise when running

Why the boiler flaps when turning on, the reasons

The principle of operation of the boiler is based on the fact that at start-up the gas is fed to the burner. The igniter goes off and ignition occurs. Water heats up and flows to the tap. If you close the valve, the burner goes out. It is during the ignition that you can hear a pop. This can indicate a serious malfunction of the equipment. Therefore, you should take a closer look at the possible causes of a popping gas boiler or heater.

Insufficient draft

Chimneys of gas boilers are designed to dispose of combustion products from boilers. During normal operation the process is unhindered and natural. In cold weather, carbon dioxide and steam cool down faster than they reach the end of the pipe. This causes them to sink back down. So the products of combustion are back in the equipment.

This mixture can clog up the chimney, especially if the chimney is not monitored. Outside debris can enter the hole. The chimney may be so clogged that you can not clean it yourself and have to call in professionals.

Debris in the chimney

The above circumstances provoke a deterioration of the draft, and the equipment begins to flap when turned on. This is one of the common causes of such noises during ignition.

You can check the draft on your own. It is enough to light a match and bring it to the chimney. If the draft is normal, the flame begins to lean towards the gas equipment. If the fire remains in the same position, the products of combustion are removed slowly, accumulate in the appliance and the chimney needs cleaning.

Also read with this article: Causes of blowing out gas boiler

Sometimes the popping is caused by a nearby hood. If it is equipped with a fan and works actively, it begins to draw in exhaust gas. That is why it is recommended to turn off the hood when the boiler is in operation.

Insufficient draught is caused by closed windows. This is particularly true of metal and plastic construction. They deprive the room of sufficient fresh air, and the equipment can not operate normally. It is recommended to open the windows at least slightly when using a gas appliance.

Low gas quality

The cause of the popping can be faulty gas. It contains in its composition various impurities. They cause a popping sound during ignition. If the quality of fuel is low, all tenants of the house will suffer from such a problem.

Read more: How can you tell the quality of the gas by the color of the flame?

So it is enough to ask your neighbors. It is possible that they have the same problem. If not, there is a problem with something else. The appearance of pops in this case can be explained by the excess of various impurities in the gas. To solve the problem, it is recommended to contact the gas service.

The burner holes (nozzles) are clogged

The burner can get clogged because of combustion products. This could be due to the use of poor quality gas, improper setting of the combustion process. It is also a problem if preventive maintenance is infrequent. When you get a spark and pop, the problem is a clogged hole near the pilot light. Gas goes out of the back hole and creates larger volume of gas-air mixture. It builds up and people hear a pop when they turn on the equipment.

You can clean the nozzles yourself if they are not too clogged. To do this, it is necessary to partially disassemble the equipment, get to the hole of the burner. It is easy to clean with a soft wire. No need to remove the nozzles. In addition it is worth cleaning the burner with a soft brush. If the problem was with clogged nozzles, the equipment will stop making noise after cleaning.

The gas appliance should be serviced annually. And it involves mandatory cleaning of the burner. That’s why it’s enough to call for service to sort out the jets.

Read more in this article: Gas appliance maintenance

Cleaning can be carried out regularly and on your own, but it is worth remembering that any manipulation of the gas equipment can lead to an emergency situation. Therefore, without certain skills and knowledge to do it is not recommended. Clogged jets also cause problems with heating water.

Batteries are dead

The reason is trivial, but quite common. Many people forget to change the batteries. As a result, people start looking for problems in different parts of the equipment, ignoring one popular cause.

In order to ignite it, the gas appliances need electricity. It can get it from the batteries. As long as they are new, ignition is literally instantaneous. But when the batteries have already lost part of their charge, the ignition process becomes slower, a small pop can occur.

The less electricity the machine receives, the slower it turns on or stops working at all. The fuel keeps flowing in, the gas builds up. The work area is completely filled with it. The result is a deafening popping noise. If the gas equipment does not light up when you open the water, you must immediately close the tap. The longer it is open, the more gas will accumulate in the working area.

The problem can be solved by replacing the batteries. If they were the cause, after changing them the equipment starts working properly. It is recommended to use alkaline batteries of proven manufacturers. They will last longer, making the boiler safer to use. Cheap versions lose their charge faster, you have to change them more often, which does not lead to the desired savings, but on the contrary, to unnecessary spending.

The casing is deformed

The gas boiler cools and heats regularly during operation. There is a thermal impact on the shells. This can cause them to deform. If the casing is damaged inwardly, then the spark plug begins to pierce the boiler body. When the deformation is concave, this part must be bent slightly.

The appliance is noisy when heating water

Modern boilers are quiet, so the vibration, noise, extraneous sounds should alert you. What can serve as an indirect cause:

There are also quite specific reasons why the boiler hums.

Large oxygen

Water in the pipes is oversaturated with oxygen, which causes bubbles when heated. Such effect leads to the increased noise and vibration not only of the unit, but also of the batteries.

Congestion of air in the system

If the boiler is knocking and puffing, it is necessary to bleed the air in the pipes. On modern radiators there are taps. By unscrewing them, you can remove the accumulated air.

Large amounts of salts in water cause their deposition on the walls of the heat exchanger. Therefore, the unit will hiss when heated. In addition the heating rate and heat dissipation decreases. Once a year it is recommended to clean the radiator. For this purpose a pump with a reagent is prepared, a purifying liquid is pumped through the hoses.

Problems with the fan operation

The fan works in models with a closed chamber and forced combustion products venting. Why it makes strange noises when rotating, whistling:

  • Grease in bearings has dried up due to placement over burner. High temperatures cause the grease to dry out quickly, leading to bearing wear. Dismantle and lubricate the part.

Excessive pressure in the heating pump

Pump is delivering too much pressure, adjust the settings. Too much pressure in the system can cause an emergency situation. Adjust the settings by flipping the white lever on the terminal box.

Lack of water in the system causes serious overheating. First of all, check the thermostat values, set it to a lower value. Measure the pressure, top up the coolant if necessary.

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  • If the boiler howls, the gas valve or bypass setting is not correct.
  • The gas meter can rattle when operating at high capacity.
  • A worn valve makes a rattling noise.

Why it is important to eliminate the problem immediately?

Even small pops are warning beacons, indicating that the equipment is faulty. If the problem is not solved immediately, it gets worse later on. The boiler may be shutting down, in addition to the popping noise an open flame may be coming out of the boiler, etc. д.

Despite the fact that modern equipment is equipped with good protection systems, the owner must still use it competently, timely maintenance, to eliminate clogging and other. Then the boiler or heater will work long, efficiently and without malfunctions.

If you find that the boiler slams when turned on or makes noise during operation, and you can not determine the cause, contact the experts of Profteplo. They will consult you in this matter and if necessary they will diagnose and eliminate the cause of incorrect operation. Call: 7 (4842) 75 02 04.

Autonomous gas heating system from the Korean manufacturer Navien quite popular among consumers, it is installed in both country houses and apartments.

Navien units have gained their popularity due to their good technical characteristics, convenience of operation and installation. Like all appliances for domestic use Navien gas heating system also has its faults.

Of course, the manufacturer gives a warranty on their device and claims that the probability of breakdowns is almost zero, given the high quality of the equipment. But if this happens, then with a competent and timely approach, they can be quickly eliminated.

Useful video

From the video, you can learn what causes the gas boiler starts banging and how to fix the breakdown.

Noisy gas boiler? This sign may indicate a malfunction in the heating system. In order for you to cope with breakdowns, you need to find the causes. Do not constantly ignore the problem, because it can lead to complete failure of the boiler. If the appliance makes a lot of popping, crackling, beeping noises, start troubleshooting.

Modern boilers operate quietly, so the vibration, noise, extraneous sounds should alert you. Which can serve as an indirect cause:

There are also quite concrete reasons, why the boiler hums.

The water in the pipes is over-oxygenated, causing bubbles when heated. Such effect leads to increased noise and vibration not only of the unit, but also of the batteries.

If the boiler is knocking and puffing, it is necessary to bleed the air in the pipes. On modern radiators installed taps. By unscrewing them you can remove the accumulated air.

The fan works in models with a closed chamber and forced venting of combustion products. Why it makes strange noises when rotating, whistling:

  • The grease in the bearings has dried up due to placement above the burner. Under the influence of high temperatures, the grease dries quickly, which leads to wear of the bearing. The part is disassembled and lubricated.
  • Unbalanced blades, accumulation of dirt and dust. Paddles are cleaned and rotation is adjusted.

Excessive pressure in the heating pump

Pump is delivering too much pressure, its settings need to be adjusted. Too much pressure in the system can lead to an emergency situation. You can adjust the values by switching the white lever on the terminal box.

Lack of water in the system leads to serious overheating. First of all check the thermostat values, set it lower. Measure pressure, top up coolant if necessary.

  • If the boiler howls, it’s the wrong setting of the gas valve or bypass (jumper pipe).
  • The gas meter may rattle when working at high output.
  • A worn valve makes a rattling sound.

Cracking and clicking, rumbling and terrible detonation in the heat exchanger of the mounted boiler occurs directly when generating the process of accumulation of dirt and fossils exactly inside the heat exchangers of the unit, in the secondary for hot water and in the primary main heat exchanger.

Why there are extraneous sounds in the chimney? The presence of crackling sound inside the chimney has a natural origin. When heated, the metal expands, which is accompanied by a corresponding crackling or snapping. Makes an extraneous noise in the chimney and when it cools down.

Water heaters with an ignition wick

Why the gas water heater turns on with a pop, not too worried the owners of old water heaters. Their design and operation were not as convenient, if compared with modern equipment. But to fix them was much easier and cheaper.

In this case, the pop when you turn on the gas boiler is possible in the wrong position of the ignition wick. The device bangs because the flame has decreased and can not reach the edge of the edge of the burner. This is due to the insufficient amount of gas supplied to the wick. The main reason that the water heater makes noise is the jamming of the nozzle.

You can cope with this problem yourself, the main thing is to be able to completely disassemble the device. The scheme of the flow-through water heaters is similar, so the instructions will fit each device.

To cope with the breakdown and prevent the explosion of the gas boiler, you need to act in this sequence:

  • Shut off the water and gas supply to the appliance.
  • Perform the dismantling of the protective cover.
  • Open the access to the ignition wick.
  • Unscrew the fasteners from the guide tube and remove the nuts securing the sensors and supply tubes.
  • Pull the tee out of the groove.
  • Pay attention to the lower branch pipe. At the bottom you will see a small screw with a hole through it. It is also called the jig.
  • Remove the element from the tube and clean it thoroughly. To do this you can use a thin wire and a needle.
  • After completing the procedure, all the parts need to be assembled back.

After performing these actions, the popping in the water heater should stop. Finding out why the gas boiler noises, you just need to eliminate the malfunction. If the breakdowns are complicated and the noise in the appliance increases, you need to visit a specialist. It will do everything to ensure that the heater does not explode and function normally.

Noises when heating water

When the gas boiler noises when heating water, the indirect causes are as follows:

If the gas boiler makes a lot of noise, there are more clear-cut reasons for this:

  • The water in the pipes has a high concentration of oxygen. That’s why bubbles form when heated. Because of this effect noises and vibrations increase, both of the boiler and the batteries.
  • Air has accumulated in the system. When the appliance has knocking and puffing, you need to eliminate air from the pipes. There are taps on the current radiators. To remove the air, you can simply unscrew them.
  • If there are a lot of salts in the water, they are deposited in the heat exchanger, or rather on its walls. And when the appliance heats up, it hisses. The heat output and the heating dynamics suffer as well. The first thing that makes noise is the heat exchanger in the gas boiler. It is necessary to clean the radiator at least once a year. A pump with a special reagent is used for this task. Cleaning fluid flows through the hoses into the appliance.
  • Excessive pressure in the mains can cause an emergency situation B. The fan is not blowing properly. It is usually arranged in modifications with an insulated combustion compartment and forced elimination of combustion products. It can rotate very noisily and even whistle. Causes:

A) The bearings are above the burner. And they have dried out the grease. Need to disassemble and lubricate these parts.

Б). The blades are out of balance. There is an accumulation of dirt on them. They need to be cleaned and their rotation adjusted.

  • There is too much pressure in the heating pump. In this case, the gas boiler pump is quite noisy. You need to re-set it. Excessive pressure in the network can cause an emergency situation. To adjust, you just need to switch the white lever on the terminal box.

The unit can overheat severely due to lack of water in the mains. Need to study the parameters of the thermostat, put the smaller parameters. pressure is measured. You can refill the thermal media if you need to.

If a wall-mounted gas boiler is making similar howling noises, maybe the gas valve or bypass (jumper) isn’t set correctly.

When operating at a significant capacity, rattles come from the gas meter as well.

Often a gas boiler makes a rattling noise due to a worn-out valve.

Why does the gas boiler make noise: causes of sound effects (hums, clicks, whistles, pops)

Extraneous noise in the boiler is most often not as dangerous as it may seem to the average person. The threat is only the appearance of malfunctions in the work, when the boiler will need major repairs or replacement. You shouldn’t put off checking the heating system too long if there are strange noises in the gas burner. Contact a professional immediately to determine the cause of the noise and eliminate it. It is not recommended to disassemble the boiler yourself, if there is no firm confidence in how it functions and what parts it consists of.

The most common causes of humming, knocking, hissing and other noise accompanying the operation of the gas boiler are:

  • operation of non-freezing media
  • gas pressure drop
  • scale on boiler parts
  • malfunction of circulation pumps
  • improper installation of the burner
  • fan failure
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