The gas boiler does not warm hot water

Why the boiler stopped warming water. the causes and methods of solving

The control board as the causes of problems with hot water should be considered when all other checks did not bring the result. The cause may be a malfunction in the flame modulation chain. The boiler control unit constantly regulates the power of the burner depending on the conditions and if there is a malfunction on the board, the boiler can spontaneously restart or disconnect when it exits maximum power, which in most cases is required in the mode of preparation of hot water.

It is still possible to set it up as errors of the board. But this only applies to those cases when problems appeared after its replacement. Baxi boards are universal and require settings for a specific boiler.

Good evening to everyone! After 4 months of operation of the bixial gas boiler, it stopped warming hot water. Why? What is the reason? I suppose that the boiler works on unprepared water and, possibly, “overgrown” with a scale or rust. What will the gentlemen advise?

User answers: no. I don’t communicate closely))))) and, I remembered. when Dolf Lungrren flies on the TV, Van Damm If other problems are not worried about the move, go calmly!. Happy holiday, Irina! Beautiful photo. How I love mimosa! I did not have to choose, the hand itself reached for

The most common cause of caustic boilers is scale. Most likely you have a boiler heat exchanger clogged with a cape and does not warm from that. Solution. install special. Filters. For example, magnetic or electromagnetic. Put in front of the boilers and work for many years without requiring service. Cm. Manufacturers of Kem (Moscow) or aquashit (Ufa). Good luck!

Yes, most likely your double.circuit boiler is covered with a scope. That is why he stopped warm hot water! Why? Hard water! What to do? Install the filter. For example, ion.income or electromagnetic.

User answers: chakapuli, cups And many more dishes of Georgian cuisine Still fried potatoes with forest mushroomsI’m listening to biology nowI can’t even imagine this to myself. I would be bored alone, to be nailed to all kinds of dubious companies

Vylant and Baxi boilers are particularly reliable and security. The breakdown of such complex equipment should be eliminated by the master. But, small malfunctions can be removed yourself if you have a basic level of knowledge about the device of heating and heating gas double.circuit boilers Baxi, Aristan or Neven. On the display of the bixial gas boiler, most of the malfunctions are indicated. Having a decoding of errors, you can figure out what is the reason for the boiler refusal to heat the water. Where to start the search if the water heating in the bixial boiler or Weland does not work, and the indicator does not show the error or it can be interpreted in different ways? The gas boiler does not warm hot water. Why? Cause? Double.circuit boiler boiler (baxi). If the double.circuit gas boiler Weilant, Bax, Aristan or Navien does not heat hot water, the secondary heat exchanger should be checked. He also has the ability to quickly block. But, fortunately, it is easily removed, cleaned and installed back. What is the reason? Why is this happening?

Water heaters are used as the main or additional source of hot water supply in apartments and country houses. A complex device may fail for various reasons, breakdowns cause a lot of domestic inconvenience and require urgent elimination. Let us consider in more detail why cold water does not enter the water heater, for what reason the pressure may decrease and why difficulties arise with heating.

Why does a gas boiler don’t warm water

If the boiler of the Baxi does not warm hot water, this does not mean the guaranteed exit of the main mechanisms or control panel of the unit out of order. This failure can be observed in the event of any of the following situations:

• Scale on the heat exchanger, fittings or three.way valve. The accumulated lime prevents the rapid bringing of the liquid medium to the desired temperature.
• The presence of a large amount of solid particles and other garbage in a closed circuit, which indicates the poor operation of the mesh filter installed on the reverse line before entering the boiler.
• Problems with the supply of main gas or clogging of nozzles, which prevents normal combustion and heat transfer.
• Damage of a gas valve or other equipment standing on the balance of utility services.
• Too weak pressure in the system, as evidenced by indications on the manometer of the security group.

To identify any of the problems indicated above, it is necessary to carry out a complete diagnosis of the device, as well as check the condition of the heat exchanger.

Diagnosis of sensors

If the duct sensor is a microsword, then for diagnosis, it is enough to check the closure of the contacts by the tester. To do this, disconnect the contacts from the sensor, connect the tester in the “calls” mode, turn on the water analysis valve. If the closure does not occur, it means that the sensor is faulty and requires inspection and, if necessary, replacement. It happens that the accumulated dirt interferes with the closure and it is enough to clean it. Poor quality of tap water and the absence of pre.cleaning filters is the most common problem. Hoering sensors contain a magnet, so attract rustal microparticles and quickly fail.

Sensors with a flowmeter record the size of the water duct, which can usually be taken to the boiler display. For Baxi boilers you need:

Hold the “i” button for access to the information menu for 5 seconds

Pull the buttons to adjust the temperature of the hydroelectric power station to the A08 parameter (the actual water consumption passing through the sensor, liters per minute 10)

Now it remains to compare the actual water consumption from the crane with the flow rate on the sensor. If the actual expense does not correspond to the value of the sensor, then most likely it needs to be replaced.

Since the mechanical part of the flow sensor is a turbine, in the case of contamination, it can be interlocked and the signal from the sensor disappears. There is no signal from the duct sensor. the boiler stops the heating of the water.

The main problems why the boiler does not warm water

often the malfunctions of the boiler are detected in the heating season when both circuits of the device work. There are two main problems that the owners of wall gas boilers are faced with, such as Ariston:

• All boiler systems work, the device turns on, but heats the water weakly or does not heat up at all;
• The boiler does not start, and, as a result, there is no hot water supply.

Each of these problems has its own reasons and ways to solve. To eliminate problems, you need to figure out what caused and served their occurrence.

Before clarifying the causes of the unit failure, you should look into the operating manual, read the instructions and check the correctness of the settings and connecting the device.

note! Modern gas boilers are equipped with a diagnostic system that reveals malfunctions and displays an error code for a display. To decipher the codes will help the instructions for the unit.

If all requirements and conditions are met, the most common causes of malfunctions should be considered:

• Blockage. Experts argue that the use of non.refilled working fluid increases the risks of blockage of heat exchanger pipes. The resulting scale reduces its thermal conductivity, which makes the unit with an overspende of energy work. In this case, the optimal temperature regime is not achieved even with the continuous operation of the device. Due to the pipes of the heat exchanger of the lime plaque, the metal is subjected to corrosion changes, which can lead to its gap.
• Faulty pump. The circulation of the coolant can be stopped due to air accumulation, the so.called air cork in the pump. The second reason for the pumping of the pump may be the rotor that jammed. The circulation pump that has stopped functioning can lead to overheating of the gas boiler.
• The sensor of the duct stalled. Inside the boiler is a sensor in the form of a turbine resembling a small fan. Когда турбина крутится внутри датчика, за счёт тока жидкости вырабатывается электрический импульс, который подаётся на управляющий блок. Thus, the electric system understands that the coolant needs to be warmed up.
• The three.way valve jammed. Such a malfunction will not allow you to switch the supply of water from heating to the hot water. The valve lock can occur due to a blockage, both the details and the gas hose or filter.
• Insufficient pressure. If the volume of the liquid in the system does not create the desired pressure, the water supply valve does not open, which leads to the refusal of ignition of the burner.

When the reason is known why the boiler does not warm the water, you can try to eliminate it yourself. Manufacturers often make mechanical units available for self.service.

Important! When eliminating malfunctions on their own, before starting work, the unit should be turned off from electric power and free the internal nodes from the coolant

• When clogging the heat exchanger, you can clean it using special liquids, or by using proven home products to remove scale. Subsequently, it is better to use filtering devices at the inlet of the coolant into the boiler.
• If the reason is a faulty pump, you should disassemble it and inspect the rotor. If extraneous particles are detected, which stop free movement, it is necessary to remove them. The filter is also subject to inspection for blockage.
• When the cause of the water sensor was the cause of the malfunction, it is necessary to get a part from it, inside of which there is a turbine. If, when rotating with a finger, it begins to click or slow down in the direction of movement, this means that there are extraneous particles in the body. You should try to rinse the turbine and clean each of its blades with a cotton swab moistened in the purifying liquid.
• A three.way valve, if it causes a boiler malfunction, it is also necessary to clean, and at the same time check the gas hose and filter.
• With reduced pressure, you should check all the fittings and valves on the device, the pressure with which water flows from the mixer. If there is no leakage, but the pressure is weak or absent, then a simple replenishment of water in the expansion tank will help to solve the problem.

One of the main tips is to comply with the operating rules and follow the recommendations of manufacturers

It is important to remember that prevention is always more profitable and better than repairs. Timely maintenance, checking the main units of the system will extend the service life of an autonomous heating device

As you know, the boiler is filtered from various impurities using a mesh filter that delays the IS with rust particles. The lattice of the upper gasket is clogged, and a lump from garbage prevents the fact that fluid flows freely. Therefore, she can end at one moment.

To resume normal boiler filling, it is necessary to remove the plug, wash the net and return everything back. There are replaceable types of filters that are filled with helium or air. Poor material flows and clogs water tubes. The situation will help to save the position of a normal water supply filter or cleaning water intake tubes with a ruff.

Why does the boiler do not warm water

Most often, such malfunctions happen before the heating season, when after a long downtime the boiler is included. Two options for the development of events are possible:

• The boiler passes an automatic check, lights up, but does not warm the water well or does not heat it at all;
• the boiler just does not work, the batteries remain cold.

We remind you that in modern heating boilers, advanced automation is built, which is diagnosed with all the units of the device before launching. If the malfunction is found, then the security system will stop working the boiler, and the error number will be displayed on the display. You can decipher errors with instructions for the device or using our classifier.

The boiler power is incorrectly selected

It is very important that the boiler is selected individually for your needs. The following problems are possible otherwise.

• The situation is the first. The low power of the boiler does not allow heating the entire volume of water. In this case, the device will work constantly, but the water will still not warm up to the desired temperature.
• The situation is second. A too powerful model for a small volume of coolant was chosen. In this case, the water will not cool, still hot water will flow into the boiler. As a result, this will lead to a constant overheating of the boiler because of which it will “beat”-constantly turn on and turn off.

The first thing you can do is configure the boiler for optimal work, for example, reduce the gas pressure at the input or the power of the device itself. If this does not help, then you will have to either replace the boiler, or recall the heating system, for example, add or remove radiators.

The boiler boils and the batteries are cold

So, the boiler works at full power, and the batteries remain cold. In this case, experts recommend immediately checking the operation of the circulation pump. After a long downtime, he can clog or stick. Then the heated coolant will accumulate in the boiler, and not move through the pipes. The problem is easily solved by a simple flushing of the pump, or its replacement.

The heat exchanger clogged

With an increase in temperature in water, salts dissolve, which then settled on the heat exchanger. The resulting scale reduces the heating of the coolant (heat is simply not transmitted to water due to a layer of solid deposits), so the boiler, although it works, the water in the heating circuit still remains cold.

The second option is possible: as a result of constant combustion of fuel, soot accumulates on the surface of the heat exchanger. Because of such a thick layer, the fire ceases to contact the surface of the heat exchanger and simply does not heat it. As a result, water remains cold.

You can solve the problem by cleaning the heat exchanger or replacing it. To do this, you can use special cleaning tools.

Insufficient pressure

1.5-2 atmospheres are considered optimal pressure for private houses. For multi.storey buildings, it can reach up to 4 atmospheres. If the gas pressure at the entrance is less than the recommended, the boiler simply cannot heat water.

Be sure to check the system for leaks: due to insufficient fluid volume, the necessary pressure is not created. Check all filters, including gas. If it is clogged, then an insufficient amount of gas will come.

Check the boiler settings, perhaps the pressure gearbox is incorrect. Either a poor.quality insert was made to the gas pipeline: during the work, a smaller hole was made than necessary.

What happens when hot water is turned on at the same time at two points of the fence

The scheme is complicated if during the use of hot water at one point of the fence, it becomes necessary to turn it on at the other point, for example: when the soul is turned on in the bathroom, it became necessary to wash your hands in the washbasin of the toilet. In this case:

• The speed of use of hot water increases sharply, its consumption increases,
• a weak pressure of hot water appears;
• The arrival of cold water in the boiler increases,
• the drop in the temperature of the heat exchanger boiler leads to the fact that the water temperature at the first point of the fence ceases to be comfortable,
• A few seconds are necessary to turn on the automation of the boiler for heating,
• A few more seconds. so that both users at two points of the fence can use water having a comfortable temperature.

All this time both users cannot fully use hot water. She acts with interruption. Unproductive water consumption, which is uselessly going into the sewer, increases sharply.

What if one of the users turned off the water? In this case, hot water consumption drops sharply. On the heater of the double.circuit gas boiler, the temperature jump occurs. As a result, the temperature of hot water increases sharply at the point of the fence that continues to work. The user cannot fully use water, it goes into the sewer until the automation works on the boiler, and the water of the desired temperature will go to the user in a stable mode.

Since such situations are repeated several times every day, the unproductive consumption of hot water grows every day. At the same time, one should not forget about the discomfort that users experience in the moments of unstable hot water supply.

Possible ways to solve the problem

When the reason is known why the boiler does not warm the water, you can try to eliminate it yourself. Manufacturers often make mechanical units available for self.service.

Important! When eliminating malfunctions on their own, before starting work, the unit should be turned off from electric power and free the internal nodes from the coolant

• When clogging the heat exchanger, you can clean it using special liquids, or by using proven home products to remove scale. Subsequently, it is better to use filtering devices at the inlet of the coolant into the boiler.
• If the reason is a faulty pump, you should disassemble it and inspect the rotor. If extraneous particles are detected, which stop free movement, it is necessary to remove them. The filter is also subject to inspection for blockage.
• When the cause of the water sensor was the cause of the malfunction, it is necessary to get a part from it, inside of which there is a turbine. If, when rotating with a finger, it begins to click or slow down in the direction of movement, this means that there are extraneous particles in the body. You should try to rinse the turbine and clean each of its blades with a cotton swab moistened in the purifying liquid.
• A three.way valve, if it causes a boiler malfunction, it is also necessary to clean, and at the same time check the gas hose and filter.
• With reduced pressure, you should check all the fittings and valves on the device, the pressure with which water flows from the mixer. If there is no leakage, but the pressure is weak or absent, then a simple replenishment of water in the expansion tank will help to solve the problem.

One of the main tips is to comply with the operating rules and follow the recommendations of manufacturers. It is important to remember that prevention is always more profitable and better than repairs. Timely maintenance, checking the main units of the system will extend the service life of an autonomous heating device.

Use the water heater

A water heater, cut into a hot water supply circuit, acts as a buffer capacity. Its purpose is to align the temperature of hot water and smoothing out possible temperature jumps. The drive heater and the gas boiler heater is set at the same operating temperature.

Even in the case of simultaneous inclusion of hot water taps at different points of its fence, all users will first receive water from the drive at first. The expenses of time associated with the expectation of a comfortable water temperature are reduced. Unproductive water consumption is reduced.

Turning on and off the supply of hot water at any point of the fence causes a water temperature difference at the output of the gas boiler. However, this water enters the lower part of the water heater, and when it exits the upper part, the temperature leap is completely smoothed out.

Connecting a water heater through a ball valve allows you to switch to a regular gas boiler operation at any time, which can provide uninterrupted hot water supply in the event of a water heater breakdown.

Using the bypass of a jumper with a tap in close proximity to the boiler allows you to exclude a boiler from a hot water supply system. If the boiler is on maintenance, the use of an existing water heater will ensure the uninterrupted operation of the hot water supply system.

Use an expansion tank

In the winter, when the boiler has a heating circuit, any inclusion of hot water leads to the fact that the heating circuit is turned off so that the hot water supply circuit can turn on. In the summer, when the boiler does not use the heating circuit, each inclusion of hot water leads to the inclusion of a gas boiler.

Often the user opens the hot water crane in order to just rinse his hands. The boiler turns on or switches, hot water goes through the pipes. But the user may simply not wait for her, raining his hands with cold water.

Meanwhile, frequent and useless inclusions and switching of the boiler “eat” its work resource. Possible output. installing a small expansion tank. It is installed in front of the water heater. In the presence of such a tank, at first after turning on the tap, hot water enters the pipe exclusively from the water heater due to the growth of pressure in the tank. Thus, in the case of a short use of hot water, there is no need to turn on and switch the boiler.

It is recommended to use a tank designed for hot water supply. The use of a tank intended for heating will lead to the appearance of the smell, since its membrane is made of rubber.

Use the recirculation pump

The best option is that the water heater is located in the immediate vicinity of the dots of hot water. The closer it is, the faster the hot water enters the crane, the more efficient it is used. If such an option for installing a water heater is impossible, then it is recommended to install a recirculation pump.

The pump is installed on the segment between the water heater and the dots of hot water, providing the slow movement of hot water through the pipes. In addition, if you cut a heated towel rail on this segment, it will perform its direct function at any time of the year, regardless of the operation of the heating circuit of the boiler.

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The reason is the low supply pressure

It is necessary to start with the most common cause, which causes a decrease in pressure, low pressure in the central water supply. This situation is most often found among apartment owners in multi.storey buildings. But for the inhabitants of the private sector it is no exception.

With great consumption, the pressure in the system decreases, which leads to a decrease in the supply pressure. To comply with safety requirements in heating devices, pressure control sensors are provided, which should turn off the device when the pressure is reduced below the norm. As a result, when the tap is opened, the water comes slow or does not come at all.

Check that the reason lies in this is the easiest way. It is enough to contact the neighbors above the riser and check the level of pressure in their system. If the situation is similar, it is necessary to start finding a solution.

Ways to solve the problem

Stop blocking the operation of the gas column when reduced pressure in the central pipeline can be in several ways. The first and most practical way is the installation of raising pumping equipment. This approach will instantly solve the problem, t.to. water from the water supply will be supplied with high pressure necessary for the stable operation of the heating device. But having solved one problem, you can face another. The increase in the pump can even more reduce pressure for those who are higher than. In this regard, the selection of power of raising devices should be carried out in such a way as to satisfy the owner’s need and avoid problems with neighbors.

The second option is the installation of the accumulator of the corresponding capacity. While the pressure in the system is below the established standards, the water in a gas column or heating boiler will be supplied from a special tank. And then a weak pressure of hot water from a gas boiler can be increased. And at the end of the water consumption, the hydraulic accumulator will gradually be filled to the desired volume.

The third option is to adjust the pressure. Each automatic water heating device provides a special lever responsible for adjusting the heating unit of the heating unit when the pressure and temperature changes in the system. It must be installed at a minimum, t.e. put on a small water pressure. So you can turn off the blocking with weak pressure and stable operation of the column. But you should not abuse it. For the normal operation of the equipment, pressure from 0.1 to 0.3 bar is necessary. Otherwise, the equipment will work under load, which increases the chance of failure.

Filter at the input of heating water into the heat exchanger of the hot water

Hot water heating problems sometimes occur and aggravate due to clogging of the filter installed at the input of heating water into the plate heat exchanger of the hot water. The filter protects the plate heat exchanger of the hot water from the dirt from the heating circuit.

If the filter is strongly clogged with dirt, then in DHW mode this most often manifests itself as an error: “overheating of the primary circuit on the feed (NTC2)”. The protection against overheating is triggered and the boiler is disconnected.

All brands of boilers are removed in different ways. But this procedure usually does not represent any particular difficulties. Some special tool is not required. But it will be better to find instructions, site, pictures or videos on the Internet on this topic. For the first time you can invite a service specialist and see how he shoots a filter.

Cleaning filter DIS Double.circuit gas boilers Protherm Gepard and Panther (Panther)

fasteners, holders of the heat exchanger; 2. a screw of the holder; 3. laying; 4. filter of heating water at the inlet to the heat exchanger; 5. heat exchanger of the gas station of the gas boiler;

To clean the filter of the heat exchanger DHW, you need:

• Close the taps on the supply and return of heating water.
• Open the drain valve on the boiler, on the right under the pump, and drain heating water from the boiler.
• Close the tap at the inlet of cold water and disconnect the tube of cold water from the boiler. Water will merge through the open pipe of cold water from the boiler. Open the water cranes of hot water for the complete release from the water of the hydraulicular tract.
• Remove the screws (2) and the holder (1) on both sides of the plate heat exchanger.
• Remove the plate heat exchanger DHW (5). The housing of the plate heat exchanger is pressed with fixing tires to the base. After the tires are removed, pull the heat exchanger up and take it out.
• Remove gaskets (3).
• Get a filter (4) from the hydrogen group.
• Clean the filter and return everything back.

It is recommended every time when installing to change the gaskets between the heat exchanger and the base (3). HBS heat exchanger gasket, rubber ring: 22.2×13.5×5 mm. From the inside. ring recess. Article number: 0020014166 (10 pieces).

When installing the installation, the correct location of the heat exchanger is checked. the inscription of the marking on its side wall should look forward. I recommend using the moment and the heat exchanger removed from the boiler is cleaned of scale. How to do this. read the next article on this topic.