Three.way valve why whistles

Malfunctions

This block is for those who first got to the pages of our site. In our forum, various malfunctions are considered in gas boilers and columns. The most frequent manifestation of defects is as follows:

whistling, boiler, baxi, heat, exchanger, clogged
  • does not turn on
  • The gas burner goes out
  • Does not gain temperature
  • does not execute management commands
  • weak flame
  • whistle and noise in the boiler
  • The system has cold water
  • The problem of the circulation pump

Many malfunctions are not a cause, but a consequence of another malfunction. You will find detailed information in the section of gas equipment repair.

Repair of gas boilers and speakers

Keep in mind that the repair of gas equipment and the installation of heating must perform professional, certified workers. The forum contains topics designed for masters in this area. Unskilled repair may have very serious consequences. The forum addresses the following questions:

  • Diagnostics
  • Determination of a malfunction
  • Repair methods
  • Search for spare parts
  • Service
  • Installation and configuration

Diagnosis of gas boilers

As a rule, most modern gas boilers have an internal diagnostic system, which independently identifies any malfunction and highlights its code on a digital display. Since each model has its own codes, they are not listed here, but in the corresponding topics of the forum

From errors codes, the master reveals the most likely cause of breakdown. However, the processor (controller) does not determine some defects in error codes, they require detailed manual measurements or settings of equipment units. Based on the results of the diagnosis, it may be required:

Where to download a gas boiler diagram ?

Beginning repairmen are often looking for circuit schemes, connection schemes, user and service instructions. On the site they are posted in specially designated sections and are available for downloading guests, or after creating an account:

Many files (schemes, firmware, instructions) are displayed and available only to the professional repair group. To view them and access them, registration of the account is not enough. When the necessary scheme and other documentation on the site, the participants request it in the corresponding section.

What brands are considered

Almost all of the brands of boilers are considered in the forum. A large base has been collected by malfunctions, methods of their diagnosis and elimination. Here are a few links:

Popular topics

In the process of repair, masters have interesting topics for discussion. We list only some:

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  • When there are clicks

    How to understand why a gas boiler clicks? As a rule, clicks can be heard when turning on and off the gas boiler. As well as during cooling and heating. Below are the most common reasons:

    • When starting, a large amount of gas is formed. This gas flashes as soon as the device turns on, as a result of which we hear the noise.
    • The cause of extraneous sound can be a trim of a three.codal valve, or in the inciting mechanism. Also, the reason can be hidden in the clogging of the chimney. This leads to the formation of a mixture of gas and air. Wick pollution is also accompanied by clicks. If you do not fix the problem, then the craving will worsen over time.
    • Due to the incorrectly installed brackets, a violation of the balance of thermal expansion occurs. Because of this, clogs arise in the lower part of the boiler housing, which can cause extraneous sounds. Often clicks can be heard with a large evaporation of liquid.
    • Violations in the performance of the pump itself are possible, it is necessary to check it for the presence of problems.
    • A sharp drop in temperature in the boiler. The device is cooling, making characteristic sounds.
    • Extremely rare, but still possible cause of clicks is the incorrect installation of pipes.

    Incorrect installation of the burner

    Often the reason for the noise, clicks or whistle lies in the improper installation of the burner. For verification, you will need to evaluate the level of gas pressure entering the burner and recommended indicators in the instructions for equipment.

    The technique works noisily when heating water

    Modern boilers work silently, so vibration, noise, other sounds are a cause for concern. Why is a gas boiler clicking? What can be the reason:

    The water in the pipes is oversaturated with oxygen, therefore, when heated, they form. This is the reason for the appearance of noise and vibration of not only the boiler, but also heating radiators.

    Air formed in the system

    If the boiler is knocking, it is necessary to lower the air in the pipes. Cranes are installed on modern batteries. The air descends when unscrewing the cranes.

    How to independently remove air in a battery?

    Air accumulation in batteries after a break in the heating season is not a rare occurrence. This is a common problem not only in private houses, but also in apartment buildings. Its solution is not a complex process. Heating batteries and radiators are equipped with Maevsky cranes. They are located on the batteries on the side. In appearance, most often resemble the valve.

    To lower the air from the battery, you need:

    Attention! This must be done carefully, since there is a chance to burn the steam!

    The formation of scale

    Large salts in water leads to the deposition of scale on the walls of the device. When heated, salt will make themselves felt with hissing. Because of this, the device heats up much slower. Once a year, it is necessary to clean the radiator. To do this, you need a reagent, a special pump through which the reagent flows into the device and washes it from the inside.

    In radiators, the water does not move as rapidly as in pipes, and settling suspension at times higher. Regular radiator cleaning is required. You can wash the entire system or separately radiators using the compressor installation at once. For washing, the radiator is attached to the compressor, and the pressure of water is cleaned of dirt.

    Sometimes it’s enough to simply rinse the system with strong water pressure. Chemical reagents are used in cases where the situation with the deposition of scale is extremely neglected.

    Under the influence of chemicals within radiators, cracks may form, which were clogged with salts. In order to prevent an emergency, before launching the system, all equipment must be checked for readiness for work.

    Other possible reasons

    Another phenomenon that bothers the owners of gas equipment can be called clicks and pops that occur during ignition. There are possible breakdowns in the following nodes:

    • In the three.way valve. It serves as a switch between the hot water and heating, in case of malfunctions, it clicks. The solution to the problem is the installation of a new one;
    • In the block of ignition. Loud cotton, accompanying the long appearance of a spark indicates the accumulation of gas, which subsequently flashes. It is necessary to diagnose. to inspect the burner, electrodes, a smell, contacts.

    If blockage forms in the wick or chimney, the boiler with ignition bahahs, which often happens to semi.automatic models.

    The noise of the clogged nozzles signals the noise when heated, while it is extremely difficult to ensure the ignition, a fragmentary flame occurs. Here you need to stop the gas supply and clean the holes with a thin wire.

    The clogged wick is recognizable during examination, it is easy to clean it. In the case of a chimney shaft, you need to make sure in the presence of traction: bring a match flame to the ventilation or control window, if the fire is even, you will have to remove the blockage. In units with automatic ignition, the electrode is often clogged.

    If the installation was incorrectly carried out, with incorrect hanging the body, a clang of metal shock may appear. When heated and cool, the metal changes its geometric parameters, expansion and narrowing are accompanied by loud sounds.

    The same processes are characteristic of pipes walled into the walls, so when installing them, it is important to leave a compensation gap.

    If the heat exchanger plates are clogged, the boiler also begins to make noise when heated, the cause is to clog soot, dust, and soot. It is necessary to remove the case and clean all the components of the heat exchanger with a special pump or a metal brush. Dust could clog in a net, which is visible in the lower part of the case, which causes in models with an open combustion chamber a decrease in the thrust.

    The resonance due to the uneven operation of the circulation pump can also manifest itself in the form of noise. In this case, it is enough to adjust the pump settings.

    How to choose the right gas boiler?

    When a gas boiler is noisy when turned on, while knocking, clicks and pops are heard, you need to immediately solve this dilemma. Causes of noise:

    • Three.shout valve problems. With it, the boiler switches from DHW to the heating function and vice versa. If he constantly clicks, then he must be replaced.
    • The cause of cotton is a prolonged spark of spark. A lot of gas is formed. And with a roser, he flashes. It is necessary to check the burner, the smell, the electrode and all the contacts.
    • Filter or chimney clogged. They need to clean them.

    Checking the chimney shaft is carried out as follows:

    A lit match is brought to ventilation. If the fire deviates, the craving is normal. If it burns straight, cleaning is required.

    Shah can be cleaned by yourself. But their total cleaning is the prerogative of utilities.

    If the gas boiler of heating with automatic inciting rustles, then the reason lies in the clogged electrode. This element is cleaned and placed 3-4 mm from the burner itself.

    • The nozzles are clogged. You need to turn off the gas for a while and clean them using a thin wire.
    • Errors during installation. If the body of the apparatus is hung incorrectly, then when the facing side is heated, the metal is deformed. When cooling, it returns to the original form. This action is observed in pipes walled into the walls. Then, when hot water is turned on, a gas boiler is buzzing. When installing pipes in the walls, you need to remain a small scope for such deformations. extensions.
    • The plates in the heat exchanger are strongly clogged. Types Zasor: dust, soot, soot. You need to remove the case and carry out thoroughly cleaning these elements. A special vacuum cleaner is used.

    P. 5 and 6 are the most frequent answers in the dilemma, why the gas boiler is noisy when you turn on hot water?

    It is worth checking the grid under the case. If necessary. clean it.

    • The heating pump does not function incorrectly. Resonance appears in the system. If this is observed only when the heating pump is turned on, then you need to correct its settings.

    Before any work, be sure to block the gas valve. If the smell of gas is felt, call a special service.

    Check if the gas boiler rustles. To reduce vibration under its case, it is worth laying the gasket.

    Problems

    It happens that the alarm on the gas boiler begins to squeak and covers the gas supply. Then the device turns off. At the same time, there are no tangible reasons for this. For example, there is no smell of gas, smoking, excessive heating of equipment, etc.D. Often in these cases, users immediately turn off the sensor. In fact, this is a rather hasty decision. The reasons for this are the same:

    • If a gas boiler is squealing during work, this may indicate a weak traction. Smoke gases do not move intensively. In the boiler, traction is overturned. And large volumes of dangerous vapors can penetrate the house.
    • Reverse traction problems. Air barrier is formed. The output gases go to a certain point in the chimney and return back. The reason for this is the weak heating of the pipe and modest thermal insulation.

    With a disconnected sensor, the user remains without protection in an emergency.

    Saturation of the heat carrier

    A very frequent occurrence is oxygen entering the carrier of heat. Because of this, various extraneous noises may appear. often oxygen enters the open heating system than in a closed. When oxygen enters the system, it heats up and is released in the form of small bubbles. This creates a certain sound. He is somewhat similar to the sound when boiling a kettle. But such a sound does not mean that the system has any malfunctions. Just such a sound leads to discomfort of living. After all, everyone wants to relax in silence, and not listen to extraneous sounds of working equipment.

    If a whistle appeared due to oxygen entering the coolant, then this will not affect the work of the heating system. But still such a noise must be eliminated. Although such a sound will not bring any harm to the system, but still it makes you worry and think about the appearance of various problems.

    In order to avoid oxygen entering the coolant, it is necessary to arrange a closed heating system. But to do this is not so simple and also a lot of investments will be required. Consider several options for how to arrange a closed heating system:

    • Replace the expansion tank with a membrane;
    • Install air discharge on heating equipment;
    • The automatic system must be equipped with sensitive to various weather conditions;
    • Ensure automatic heating system.
    • Having performed such actions, you will ensure high.quality operation of the heating system, and the gas boiler will work more efficiently.

    Question. Answer

    If the maintenance is carried out annually, and the heat exchanger is washed at least once every 3 years, the probability of a whistle is reduced.

    In this case, it is important to monitor the level of water in the expansion tank. And it is best to make a closed circuit and put a tank with a membrane to ensure efficient operation of a gas boiler.

    First of all, you can try to update the grease in the clip. If, after a short operation, the part begins to whistle again, you need to repair. If you can’t press the bearing, the fan is replaced in its entirety.

    How to remove the plate to plate heat exchanger on the Baxi 600/800 Combi boiler

    Cases on models of certain brands

    The following are the frequent causes of different noise in the boilers of famous brands.

    First. Navien. If the error does not reflect on the display of the device, but the technique is buzzing and noisy, then immediately you need to quickly figure out why the Navyen gas boiler is noisy?

    • The device is disassembled.
    • The heat exchanger is cleaned or replaced.
    • Cranes for maximum openness are checked.
    • The temperature of the water is reduced.

    The second. Bereta. Usually in their devices there is an atmospheric burner. Then the noises are very low. But if they increase, then in the units of the beret the reasons for this are most often:

    • Weak thermal gear in the heat exchanger. At the same time, the use of DIA is completed. In the heat exchanger, scale accumulates.
    • The pipes are incorrectly selected.

    Third. Conord. These models are most often noisy with increased loads, for example in the cold. According to the documents, they are one power limit, in practice. the smaller. If the documentation indicates 13 MBAR, then in fact. 10 MBAR. Therefore, you do not need to configure the device to the maximum.

    Fourth. Baxi. Most often, they are very noisy with heating function, with DHW. a weak noise. Actions: Baypas check, cleaning and valve tuning. This work is usually carried out by employees of the service.

    Fifth. AOGV. Their users often complain about the whistle. After inciting it becomes stronger. After disconnecting, it disappears. For example, if the AOGV-17.4 model whistles, the reasons for this:

    The sixth. Weland. Often these boilers are buzzing after ignition and turning off the fire (the pump is turned on). No noise heating. The reasons:

    Seventh. Ariston. The causes of noise in the boilers of this company lie in poor circulation of the thermal carrier.

    It is necessary to extract and qualitatively clean the heat exchanger, blow it up with a compressor.

    Eighth. Arderia. When the arderia gas boiler is noisy, usually the reason lies in the erroneous setting of the pump. If you can’t configure the pump, it changes under warranty.

    whistling, boiler, baxi, heat, exchanger, clogged

    Other possible reasons

    Another phenomenon that bothers the owners of gas equipment can be called clicks and pops that occur during ignition. There are possible breakdowns in the following nodes:

    • In the three.way valve. It serves as a switch between the hot water and heating, in case of malfunctions, it clicks. Solving the problem. installing a new,
    • In the block of ignition. Loud cotton, accompanying the long appearance of a spark indicates the accumulation of gas, which subsequently flashes. It is necessary to diagnose. to inspect the burner, electrodes, a smell, contacts.

    If blockage forms in the wick or chimney, the boiler with ignition bahahs, which often happens to semi.automatic models.

    The noise of the clogged nozzles signals the noise when heated, while it is extremely difficult to ensure the ignition, a fragmentary flame occurs. Here you need to stop the gas supply and clean the holes with a thin wire.

    The clogged wick is recognizable during examination, it is easy to clean it. In the case of a chimney shaft, you need to make sure in the presence of traction: bring a match flame to the ventilation or control window, if the fire is even, you will have to remove the blockage. In units with automatic ignition, the electrode is often clogged.

    If the installation was incorrectly carried out, with incorrect hanging the body, a clang of metal shock may appear. When heated and cool, the metal changes its geometric parameters, expansion and narrowing are accompanied by loud sounds.

    The same processes are characteristic of pipes walled into the walls, so when installing them, it is important to leave a compensation gap.

    If the heat exchanger plates are clogged, the boiler also begins to make noise when heated, the cause is to clog soot, dust, and soot. It is necessary to remove the case and clean all the components of the heat exchanger with a special pump or a metal brush. Dust could clog in a net, which is visible in the lower part of the case, which causes in models with an open combustion chamber a decrease in the thrust.

    The resonance due to the uneven operation of the circulation pump can also manifest itself in the form of noise. In this case, it is enough to adjust the pump settings.

    Preventive measures

    If the boiler is buzzing when starting or turning on hot water, it is necessary, first of all, to verify a sufficient level of liquid in the system and, if necessary, add it. If the sounds come from radiators and pipelines, then they formed air traffic jams that should be removed. The code is knocking or whistling the pump, most likely, the case is in factory marriage: you have to install a new working node.

    An effective preventive measure is the timely removal of scale from the heat exchanger. It is also important to monitor gas supply so that too high pressure is created.

    Answers to current questions

    In what cases can air get into the heating system?

    Air bubbles penetrate for a number of reasons, the most commonly found of which include impaired integrity of the ligaments, complete removal of water from pipes and depressurization of equipment.

    Why can the fan be faulty?

    The main function of the fan is to remove the remnants of combustion products. As a result of this, it is periodically clogged with dust. Under the influence of high temperatures, its lubricant may dry out. All this together stimulates its wear. Sometimes a faulty fan is a factory marriage.

    whistling, boiler, baxi, heat, exchanger, clogged

    Why is a whistle resembling a boiling kettle?

    The most common cause of this phenomenon is the formation of scale with the subsequent narrowing of the passage of the device. In this case, whistling sounds appear approximately 20 minutes after starting the heating system.

    Why are rattling sounds when the boiler is turned on?

    Rattling appears if the valve wears out strongly in the boiler.

    Because of which the flame when the boiler is turned on is healed with jerks?

    This happens when the nozzles are strongly clogged. The problem is solved by turning off the gas supply with subsequent cleaning of the cavities with a thin wire.

    Regardless of the cause of the noise, the problem cannot be ignored. The sooner it is eliminated, the better.

    Closed heat exchanger

    The water that enters the heating system is not previously cleaned and not filtered, so a precipitate falls when it is heated. Over time, it forms a scale on the working details, which is why the productivity of the devices is reduced, and extraneous noises appear.

    COMBI BOILER heat exchanger

    Heat exchanger. one of the most important functional elements. It heats up as a result of gas combustion and transfers heat to the coolant. The whistle does not appear immediately, but only some time after the start of the operational period of the equipment. Lime deposits affect the duration of the boiler service life, significantly reducing it.

    Обратите внимание!При обильных отложениях появляются не только посторонние свисты, но и характерное постукивание, что свидетельствует о том, что систему нужно прочистить от накипи.

    It is possible to solve the problem why a single.circuit gas boiler is whistling if it is caused by the formation of lime deposits, it is possible only in one way. This is the cleaning of the heating system. This can be done using special chemicals that are sold in household chemical stores.