Why is cold water running on the baxi boiler. What to do if the Vailant boiler does not heat hot water
One of the problems that can happen when using a double-circuit boiler. The boiler does not heat hot water. The main and most common reason why the boiler does not heat water well is the heat exchanger is clogged.
In this article I will describe how I treat this problem. Thus, you can also get out of the situation if you have a double-circuit boiler with a plate heat exchanger.
I have a well at home and the water is very hard, so I constantly have problems with hot water To remedy the situation, I use citric acid.
The task is this. How to deliver this acid to the inside of the heat exchanger with the least effort. I found such a way. I have a magnetic converter at the entrance to the boiler, which should remove the hardness of the water, but it does not remove it, in my opinion this is a fiction. But for me it is good that it is installed directly at the entrance to the boiler. You can see it in the photo below.
It has an American nut on it, unscrewing which you can easily pour citric acid into the inside of the pipe.
But for this you need to turn off the water. Next to the boiler I have a collector. He is in the photo below.
Now all the ducts on it are open and with one easy movement I shut off the water supply to the boiler.
All water is blocked, now you can unscrew the American on the magnetic filter. And do not forget to come up with something, from the flowing water from the boiler, there is not much of it, but it is there. I wound up the rag.
Then I pour citric acid into the inside of the pipe.
I twist the American back and open the tap for supplying tap water to the boiler.
Now it is important to understand when the acid enters the heat exchanger. Since I have water faucet being a meter from the boiler, I determine whether the acid has reached the heat exchanger to taste. I just open the faucet in short jerks and taste how “sour” went, which means the whole system is from magnetic filter filled to the faucet citric acid.
Next, you need to turn off the tap so that your family does not drain all the acid ahead of time.
I refuel the system at night and until the morning I have it acidified. In the morning I open the water supply valve to the boiler and drain all the acid. The water will sizzle, don't be alarmed.
A question may arise, but will the acid heat exchanger not eat through? I poked around on the forum of chemists and came to the conclusion that organic acid (citric refers to it) is harmless to copper.
I use this method as needed. If you don’t like how the boiler heats water or the pressure of hot water has become weak, I take and process the heat exchanger with citric acid.
If you have polypropylene connections to the boiler, and there is no place to fill the acid, then think of something similar, it will not take much time.
If gas boiler does not heat water for hygienic or general technical needs, the problem can be solved by heating the required amount of liquid in a saucepan. Much more problems occurs in winter when the heating system is blocked. With a long absence of hosts, freezing of the system is possible. The subsequent restoration of its performance is associated with significant financial and time costs. To eliminate such negative situations, it is necessary to select and apply a set of effective preventive measures.
Design features of the gas boiler Baksi (baxi), Navien, Ariston
In any case, familiarization with the technique of this class and features is useful. modern models. This knowledge will help to choose the right equipment, not to make mistakes during operation.
In household boilers Baxi (baxi), Navien and Ariston, gas, diesel and solid fuel, use electric heating elements. For a more complete use of the potential of energy resources, heat exchangers are being improved. They make long ducts of complex shape to ensure that the liquid remains in the working area for a long time.
Compactness is the current trend. Manufacturers offer gas boilers with square cases of relatively small thickness. Some models, due to their aesthetic characteristics, deserve to be placed in a conspicuous place.
The next feature is the implementation automated systems management. They control the combustion process, change operating modes, taking into account the readings of temperature sensors on the street and in separate rooms. When overheating, the equipment turns off without user intervention.
It is necessary to carefully consider situations when the Baksi gas boiler does not heat water. This happens, for example, when the supply of energy resources is interrupted. It is not difficult to make an appropriate check even without special professional training.
Circulation pumps, valves, other typical components and assemblies rarely fail. Their designs are designed for many years of operation without mandatory Maintenance. There are no moving parts in electronic circuits. Their breakdowns are due to marriage. Subject to the rules established by the manufacturer, the resource of modern gas heating boilers is more than 10 years.
Voltage surges in the power supply network can damage the electrical part of the equipment. To exclude such influences, an external stabilizer is installed. Checking the grounding system will come in handy. This completes the set of preventive measures for this group of problems.
It is much more difficult to provide protection against the most common cause of breakdowns in gas boilers - scale. It is she who will be studied in detail in this article. When heated, calcium and magnesium salts are converted to a solid state. It is these impurities that clog narrow technological holes in heat exchangers. They also form a porous structure on the surface of electric heating elements. With a significant violation of the normal heat dissipation, their cases are damaged.
To prevent the formation of scale and lime inside the boiler, it is advisable to install non-chemical filters (water converters), magnetic and electromagnetic, which will ensure a long "life" for your boiler and an uninterrupted supply of hot water, as well as protect the heating circuit.
Such filters (scale converters) as AquaShield or MWS do not use chemical reagents and replaceable cartridges in their work. Once you install such a device in front of the boiler, you will forget about the scale problem for many years!
Troubleshooting: why does a gas boiler not heat hot water well?
If the gas boiler does not heat hot water well due to clogging or rupture of the tube in the heat exchanger, repairs are necessary. It is performed by replacing a failed node. Threaded connections in this case, they are not used, so it will be difficult to independently disassemble and subsequent installation. To create a high-quality soldering connection, it is better to invite an experienced craftsman. A qualified specialist will provide the necessary level of quality, provide written guarantees.
Knowing about the problem in advance is not easy. The scale layer grows slowly, so it will not be possible to register a clear decrease in power. Extraneous noise can be caused by the passage of sand and other mechanical impurities through the pipes. Technological openings are too small for visual inspection. For its implementation, dismantling is required.
This information explains why these types of emergencies occur unexpectedly. To prevent them from developing into a more complex problem, you can equip boiler equipment modern system remote control. Some manufacturers offer ready-made solutions in the form of an additional electronic unit and specialized software.
The corresponding application is downloaded to the smartphone. The advantage is the ability to remotely change settings, check the readings of temperature sensors. If the Navien gas boiler does not heat hot water due to scale, replacing the heat exchanger is not enough. These same contaminants reduce the inner diameter of the pipes, narrow the ducts in the radiators. A complete system cleanup is required.
This procedure is performed according to the following method:
- Drain water into drain.
- Rinse all circuits sequentially, or simultaneously with a special solution.
- It is also used to clean the heat exchanger, if it is only clogged and can be further operated.
- After assembly, the performance of the system is checked under pressure.
- Eliminate identified defects (cracks, loose connections).
Aggressive chemical compounds are used to remove calcium solutions. The duration of a standard procedure for one household object is several hours. Appropriate corrections are made taking into account the real state of the system. Strong acids can damage metal parts, solder joints of the Ariston double-circuit boiler. For this reason, experienced teams take repair tools to fulfill orders.
Independent implementation of such procedures is possible. But for many ordinary users, it is not advisable for several reasons:
- You have to purchase expensive equipment for pumping liquids that will be used.
- Independent selection of the optimal composition of the solution will cause difficulties.
- During this procedure, there are no mechanisms for operational control of processes within the pipeline system. This increases the likelihood of breakdowns.
- In case of personal performance of operations, an official warranty obligation of a third-party contractor will not be received. All future problems will have to be solved at your own expense.
In addition, it should be noted that careless handling of aggressive chemical compounds can cause harm to health.
Preventive actions
Specialists of enterprises offering flushing recommend doing it every heating season. It is combined with a general inspection of the equipment. The frequency is adjusted taking into account the level of rigidity, the intensity of operation of gas double-circuit boilers Baxi (baxi), and other significant factors.
These tips are really helpful. Regular cleaning will prevent more complex procedures. Simultaneous checking will help to identify problems at an early stage. However, it is necessary to emphasize the main drawback of this technology - it can damage the equipment itself. It is especially unpleasant if defects appear during heating season. It will be quite difficult to prove the guilt of the workers who did the cleaning.
Instead of using potentially dangerous techniques, effective protective measures are used. They are based on modern technologies water treatment.
So that scale does not form in the Navien or Ariston heating boiler, they are installed in front of it. They dissolve during the passage of a stream of water, create dense shells around microscopic scale particles (at the first stages of growth). After such a "modification" harmful impurities are not able to join the walls and each other. They pass freely along the contour, are removed into the sewer.
The second method is the replacement of harmful compounds with sodium ions. This procedure is carried out using special resins. They fall asleep in two large containers that work alternately. As contaminants accumulate, flushing is performed using an inexpensive saline regeneration solution. Such equipment is used for general protection of apartments, cottages, and other real estate objects.
The next reason why a gas boiler does not heat hot water and its solution is a protective technology that has appeared recently, although it has been known for over a hundred years. The fact is that previously only permanent magnets were used for descaling. They lose their beneficial features with time. Moreover, the effect of "addiction" was experimentally found, when calcium and sodium compounds cease to respond to the corresponding influences.
Today, the technique has been improved! Today, electromagnetic converters with high-frequency oscillation generators are used. With minimal energy consumption (5-20 W per hour), they operate at a distance of up to 2 km along the length of the pipeline from the installation site of the Baksi or Proterm heating boiler. This technique retains its initial efficiency throughout its entire service life.
Ultrasound can grind scale particles, eliminate old formations. But this technology is rarely used. Like acids, it can destroy the structural components of the water supply system. It should also be noted the probability of occurrence of harmonic oscillations in the sound range.
Membrane technologies provide a high level of purification from various impurities, including hardness salts. But standard household installations process no more than 200 liters. liquids per day. This is not enough for the needs of the Vailant heating boiler and hot water supply.
Features of different boiler cleaning technologies and conclusions
If the gas boiler has stopped heating water, you have to repair it. To extend the life of the Buderus or Ferroli heating boiler and prevent accidents, different methods are used. To choose the right option, you need to pay attention to the following details:
- Rinsing with aggressive chemical compounds does not eliminate the problem, but eliminates the scale that has already formed.
- Polyphosphates pollute water, so this protection is used only for the heating circuit.
- Sodium compounds are harmless (this is ordinary, well-purified edible salt). However, after appropriate treatment, the water will acquire a pronounced taste.
- Ion-exchange fillers are sensitive to temperature, humidity, various impurities. It is necessary to clarify the requirements that are set out in the official instructions of the manufacturer of the Navien double-circuit boiler.
- To connect electromagnetic transducers, you need a current source of appropriate power. To ensure its continuous operation in difficult conditions, autonomous emergency power circuits are used.
When determining the reason why the Navien gas boiler does not heat or heats hot water poorly, these are 3 protection methods that must be taken into account: water hardness, architectural characteristics of the property.
AquaShield is an electromagnetic water softener (converter) that protects your boilers from scale, lime and rust.
Website about products http://akvashit.ru
Baksi or Ariston boilers are particularly reliable and safe. Breakdowns of Baksi double-circuit gas boilers should be repaired only by a specialist. But major faults can be removed on your own if you have a basic level of knowledge about the design of Baksi or Ariston double-circuit gas boilers. So, the boiler does not heat water, hot or cold, what to do, what is the reason? On the display gas boiler Most faults are listed. Having a decoding of errors, you can figure out what is the reason for the boiler not heating hot water. Where to start the search if the water heating in the Baksi or Ariston boiler does not work, and the indicator does not show an error, or it can be determined in different ways. The Baxi boiler (baxi) has been operating for 5 years. For the last 7 months, such a problem has appeared: the gas boiler does not heat the water, although I set the temperature, for example, to 79 degrees, turn on the hot water, and the water runs at least 43 degrees. The house is large brick, double-circuit gas boiler Baxi, Ariston and Navien. At the same time, the Baksi boiler does not heat water, what is the reason? House in the village, no one lives at the moment due to the fact that the double-circuit boiler does not heat the water. Well, it’s not that it doesn’t heat hot water at all, but instead of the established 33 degrees, the water is only 17-19 degrees. Double-circuit boiler gas Ariston and Navien with a boiler. On the display of the control unit lights up that everything is working properly. Then what is the reason? This, as I understand it, why the boiler does not heat water? It spins in any direction. It does not give any effect. On the remaining pumps of the Navien and Baksi gas boiler, when recirculation is in progress, it is felt when you touch it. Because, as 78 degrees on a double-circuit boiler and 53 hot water, which is very strange. If the boiler does not heat water, the reason is unknown to you, then call a specialized company. if the gas boiler does not heat the water to the required temperature, then this is a boiler breakdown and it needs to be urgently repaired. For example, repairing a Baksi and Ariston boiler will cost 30 euros. And if the boiler does not heat hot water and refuses to work, it means that it is scale and it is necessary to clean the boiler heating element from scale and rust. Often the Baksi boiler does not heat water due to scale deposits or hardness salts on its heating element and heating elements. We offer to buy and install AquaShield from scale in the boiler. There is a Vaillant boiler, which also does not heat hot water, although the boiler is double-circuit and should work perfectly well. Maybe the water pressure sensor at the Ariston gas boiler failed? Where is he located? What does it look like? I do not know what to do! What is the reason? Why the boiler does not heat water, I do not understand. Do I need to drain the water from the heating system for the summer? Flow switch, gas boiler water flow sensor. Weak water pressure. Solution. Cleaning the boiler from scale with your own hands. Replacing the temperature sensor ntc gas boiler. A simple solution to the main problem of wall-mounted gas boilers. If the boiler does not work. Repair of the Baxi Luna 3 Comfort boiler. Gas boiler Protherm Cheetah. storage water heater. Life after... Vaillant boiler repair, aquasensor replacement. DHW filter. How to make a gas accumulator from improvised materials. gas boiler BAXI eco four 24 f. Why won't the water heater turn on? November 19, 2016
Vaillant boilers are particularly reliable and safe. Breakdowns of such complex equipment must be eliminated by the master. But, minor malfunctions can be removed on your own if you have a basic level of knowledge about the design of heating and heating boilers.
Most faults are indicated on the boiler display. Having a decoding of errors, you can figure out what is the reason for the boiler's failure to heat water. Where to start the search if the heating of water in the Vailant boiler does not work, and the indicator does not show an error, or can it be interpreted in different ways?
Vaillant boiler does not heat hot water due to blockages
This is one of the most common problems. Most often, the reason is the low quality of water - scale appears, nodes, filters and pipes become clogged.
If the flame does not light up in the boiler, start the test with the flow sensor. Finding this cylindrical fixture is quite simple. The flow sensor is located near the pump, it is to it that the wires fit. Two sensors are installed near the pump:
- Pressure sensor in the heating system.
- flow sensor.
The flow sensor looks like a small fan, it starts to rotate from the movement of water through the pipes. If the flow sensor detects the movement of water, a signal is sent to the automation about the need to turn on the gas and heat the water. If the flow sensor is clogged, water will flow but the fan will not move. Accordingly, the signal to turn on the heating is not received. There are two ways to solve the problem:
- Do not rush to disassemble the boiler and try to "purge" the system first. Turn off the main water supply at home. Open the hot water faucet and let the water out of the system. Now the percentage of air in the pipes has increased. Start abruptly opening and closing the water tap directly in front of the boiler. These simple manipulations will help create pressure and clean the flow sensor fan from debris.
- If "purging" does not solve the problem, it is necessary to open the boiler, unscrew the flow sensor and clean it manually.
If the Vailant boiler does not heat hot water, the secondary heat exchanger should be checked. It also tends to get dirty quickly. But, fortunately, it is easy to remove, clean and install back.
A clogged three-way valve can also cause the boiler to fail to heat water. And you can remove this node yourself, clean it and install it back.
Having bought a Vaillant boiler, be sure to check with the seller information about the places where the filters are installed. You can clean and change these components yourself.
Faulty pump
The heating of water in the Vailant boiler largely depends on the operation of the pump. To repair or replace this unit, you must call a specialist. But, you can independently check whether it is the reason for the boiler's failure to work.
Set the water temperature on the boiler to 0 °C and turn on the water heating mode. At this time, monitor the operation of the pump. If after 20 minutes of operation it does not heat up, then the problem lies in the pump.
The reason for the failure of the boiler to heat water may also lie in the elementary unscrewing of the bolts in the connection areas. Look carefully at the boiler diagram and check that all connections are tight. Perhaps a simple tightening of the bolts will solve your problem.