Ataman Thread starter —> Visitor 16 Feb 2016 18:43 #2 from Electro-Plumber Electro-Plumber replied to the topic Why doesn’t it flow hot water when reconnecting the boiler It is a pity that you did not write whether the boiler was filled with water or not. And so, in general, a common situation. Somewhere a pipeline is clogged. The valve could have become sour. One of the taps might have broken. Etc. Please Login or Register to join the conversation.
I have a savings account Ariston water heater. Purchased 2 months ago. It worked without problems, but suddenly hot water stopped coming out of it. It works itself, heats it up, but the water does not flow. The check valve was replaced, time passed, everything became normal. Now there is no hot water again. The pipes and hoses are all new. We can't understand the reason. Please, help!
Good afternoon, Lately I discovered that the hot water began to flow under much weaker pressure than it was originally. As I understand it, its pressure depends on the pressure of cold water displacing hot water from the water heater. There are no problems with cold water pressure. Two are connected to the boiler metal plastic pipes. One for cold water inlet, the other for hot water outlet. What measures can be taken to restore the previous pressure? Can I somehow clean the pipe or flush the boiler?
Water heaters are installed in houses, apartments, and commercial premises. They provide constant availability warm water in the absence of hot water supply and during a boiler shutdown. No guarantee of excellent quality household appliances and installation according to the instructions will help avoid breakdowns. Often, consumers turn to repair specialists with a complaint that hot water does not come out of the boiler when turned on or its pressure is too weak.
A household appliance such as a water heater is very popular. Convenient and low maintenance, it has found its application both in private houses and apartments. However, not everything is as smooth as it may seem, and sometimes owners are faced with incorrect operation of the equipment. The reasons that, for example, hot water does not come from the boiler when you open the tap, may be different. If problems occur, do not panic and replace the device with a new one; in most cases, breakdowns can be repaired.
I have an Ariston 80 liter water heater installed. It's time to change the anode. A specialist came and changed the anode. After this, I can’t use the storage boiler - I can’t wash the dishes or take a shower. There was no trickle of hot water. Maybe it's clogged with sludge hot pipe. Help! Why might this be? Sanya Return to top Complain about this message Reply with a quote There is pressure, but hot water barely flows. Why, what to do with the boiler? Sergey N » June 23, 2014, 10:55
The coarse filter at the boiler inlet is clogged. If you have old pipes or the flow is too dirty water, the strainer will become clogged over time. You need to disassemble it and clean it or replace it with a new one. To do this, remove the plug from the flask using a key and remove the mesh. Installing an additional filter also solves the problem.
In summer, in most apartments with centralized water supply, hot water is turned off. During this period, utility services carry out repairs and preventative work. As an alternative, the vast majority of people choose to buy tankless or storage water heaters, depending on their needs and budget.
Ariston boilers are popular among consumers. But they are not immune to breakdowns, despite their ease of use and ease of installation. In this article we will talk about malfunctions of Ariston water heaters. You will learn how to detect a breakdown, repair or replace a part.
ELECTROLUX Faulty water heater Electrolux EWH 100 liters. Can't turn on. When I tried to drain the water, only 5-8 liters came out, and the volume was 30 liters. How to fill the tank completely and can it not work because of this? I have low cold water pressure. Boiler malfunction Gorenje. The indicator is on, shows the temperature, clicks when turned on, but there is no voltage to the heating elements. Defective
Control block?
Not every user knows how to drain water from a water heater. Almost everyone who owns an electric heating tank sooner or later faces the question of how to clean it from scale. Due to the increase in fees public utilities, and for hot water supply as well, more and more residents are buying water heaters for constant supply to their apartment or house hot water. The boiler is easy to use, does not take up much space and allows you to use it at any time.
Storage tanks capable of heating water to a certain temperature (in common parlance - water heaters or boilers) are most often installed in those rooms where there is no centralized supply of hot water, or where there is high probability turning it off. This device has not lost its relevance from ancient times to the present day. Thus, the ancient Greek mechanic Heron of Alexandria (second half of the 1st century AD) is rightfully considered the inventor of the boiler. The unit he created heated cold water with steam. Then they forgot about him, and therefore at the end of the 17th century early XVIII centuries were forced to reinvent the apparatus. But, like any other household electrical appliance, even an advanced water heater can break down as a result of exposure to internal or external factors, as well as due to simple wear and tear of parts. All the reasons why hot water does not come from the boiler, as well as ways to eliminate them, will be described in this material.
In general, we can talk about three types of devices capable of storing and heating water:
All of these devices have a similar design and operate on the same principle. They differ only in the heat sources used to heat the water. In this case, the role of a heater can be performed by: a heating element, a coil with a coolant supplied to it (for example, a boiler), gas-burner. Structurally, all boilers have the form of a wall-mounted tank, the internal surfaces of which are covered with heat-insulating material. Cold water enters it through a pipe located in the lower part, and the heated liquid is taken from the upper part.
On a note! The pressure in the tank is as at the inlet ( cold water), and at the outlet (hot water), is the same and is in the range of 4.5-6.8 bar. Therefore, if cold water does not enter the tank, then there will be no hot water coming out either. The water supply is controlled by a pressure regulator (reducer) built into the tank, which protects the boiler in the event of a sharp increase or decrease in pressure in the domestic water supply system.
The heaters in all boilers are located in the lower part. The water in the tank heats up to desired temperature, and then used by the owner for its intended purpose. To maintain and, if necessary, adjust the required temperature regime, into the water heater built-in special thermostat. In addition, the boiler is equipped with a temperature meter, with which the user can control the degree of water heating, and a safety valve that prevents the unnecessary leakage of liquid.
Despite the fact that boilers are reliable in operation and designed to operate for a long time, it is possible that hot water does not flow from the tap. As a rule, this is due to the occurrence of minor malfunctions, the most common of which are:
Advice! Quite often, hot water does not come from the tap or flows in a thin stream due to the fact that the mesh of the faucet installed in the kitchen or bathroom is clogged. Therefore, first of all, it is necessary to check and, if necessary, eliminate the blockage of the mesh (aerator), which is located directly in the spout (spout) of the mixer.
Cleaning the mesh carried out as follows. Close the tap, unscrew the spout from the general body of the mixer, carefully remove the parts that are there and rinse them thoroughly. If the component elements are heavily soiled or have salt deposits, they are soaked in a solution of washing liquid. At the end of the work, you need to make sure that all contaminants have been removed. The parts are then placed into the spout body and placed back on the faucet. Then, opening the tap, check whether the defect has been eliminated.
Another reason why hot water does not come from the boiler may be failure of one or more valves responsible for the intake of cold and supply of hot water. Their performance is checked before diagnosing the boiler components. Faulty valves are replaced.
To protect the internal parts of the boiler from debris that may be in the water supply lines common use, a coarse filter is installed in front of the inlet fitting. Severe contamination of its filter element can lead to the cessation of cold water supply to the tank, which in turn will cause a lack of hot water in the mixer tap.
Eliminate the malfunction by thorough washing of the mesh filter element. To do this, use a special key to unscrew the plug in the filter housing and remove the mesh element from the flask. It should be rinsed thoroughly under strong running water. In case of heavy contamination, the mesh must be cleaned with dishwashing liquid. After washing the filter element from dirt, it is installed in place. To speed up the process, it is advisable to have a replaceable mesh on hand.
Advice! To clean the filter element from heavy pollution It is recommended to apply dishwashing detergent to the sponge and then wipe the mesh with it. However, experts do not recommend soaking the latter in a solution of cleaning liquid.
Dirty water often clogs not only the coarse filter, but also water pipes and/or supply pipes. Various deposits and foreign objects found in the centralized water supply system lead to the accumulation of debris that is insurmountable to the flow of water. Most often this happens at pipe bends. This problem can only be resolved replacing old communications with plastic pipes. If the supply pipes become clogged, it is also recommended to replace them.
Quite often, the reasons why cold water in the boiler heats up slowly or there is no hot water in the mixer tap are scale and salt deposits that form on the surface of the electric heater during operation. In this case, the resulting layers can not only block the hole through which water enters the boiler, but also disable the heating element.
Avoid the consequences of poor quality tap water Regular cleaning of heating elements will help. You can do it in the following order.
Before installing the heating element, you should thoroughly rinse the inner surface of the tank and check the condition of the magnesium anode - if necessary, it will need to be replaced.
As for the elements that provide heating water by indirect method, then they are also cleaned using cleaning solutions based on citric acid.
Important! Do not use salt, sulfur or acetic acid. They do not cope well with scale and salt deposits, but they react well with copper and copper alloys, which are widely used in the manufacture of parts and components of any water heater.
Unlike boilers with heating elements, clean the heaters gas appliances, as well as drives with indirect heating water is only possible after partial and sometimes complete disassembly the latter.
The lack of hot water at the outlet of the water heater can be due to either weak pressure or a complete absence of cold water at the inlet to the boiler, or a malfunction of the pressure regulator. Having opened the cold water tap, check its presence or absence (no pressure) in the pipeline. If with pressure in the system centralized water supply everything is ok, it's necessary check and try to adjust the pressure regulator. In the event that the latter fails, it must be replaced.
Failure of components installed inside the boiler can be caused by a variety of reasons. For example, a clogged check valve occurs due to the ingress of foreign objects that may end up in poorly treated water. To clean the valve, you must drain all the water from the boiler, then completely disassemble it and remove any debris from under the stem.
If the boiler stops heating water, one of the reasons for this may be a breakdown of the thermostat (temperature regulator). Water heaters are usually equipped with a mechanical (built-in) or electronic (surface) thermostat. To check their performance, you need a multimeter that measures resistance. The absence of changes on the multimeter indicator during measurements indicates that the thermostat is faulty and requires replacement. Temperature regulators cannot be repaired.
Advice! Check the thermostat only after making sure the heaters are working.
To perform procedures related to the dismantling of individual parts of boilers, their partial or complete disassembly, it is better to invite specialists who have experience in performing similar work on models of a particular brand. This need is due to the fact that in boilers from different manufacturers there are design features relating to the placement, fastening and interconnection of internal components and parts.
For example, in water heaters such famous company, like Ariston, self-clamps are used to connect pipes instead of nuts. And on boilers produced by Termex, the heating element is inserted into a hole with a diameter of 60 mm, into which neither a tool nor a hand can fit. Therefore, to attach the heating element to the boiler body, original flanges are used, the bolts of which during operation become so stuck to the nuts that it is not possible to unscrew them. As a result of this, the fasteners (and depending on the volume of the boiler there can be 6 or 12 of them) have to be cut off with a grinder.
So, the reasons for the lack of hot water from such household appliance, like a boiler, there may be external factors, independent of the user, and internal failures of device components. In both cases, the intervention of specialists is required (except for the lack of cold water in the water supply), since it is not recommended to even clean the heating element on your own without experience - this can lead to fatal breakdowns of the boiler. But if preventive maintenance is carried out on time, the device will work for a long time and without complaints.
Storage water heater Thermex Champion Silverheat ERS 50 V on Yandex Market
Storage water heater Thermex Flat Plus Pro IF 50V (pro) on Yandex Market
Storage water heater Gorenje OTG 50 SLSIMB6/SLSIMBB6 on Yandex Market
Storage water heater Electrolux EWH 100 Centurio IQ 2.0 on Yandex Market
Storage water heater Electrolux EWH 50 Magnum Unifix on Yandex Market
Owners who have installed a storage water heater in their home often have questions about its operation. safety valve. Is water leaking from this device normal or a breakdown? And if the water circulation must take place, then in what quantities and how often? We have already considered the design and principle of operation of a safety valve for a boiler. Now we will tell you how to determine the malfunction of this device and how to solve the problem of its leakage.
As you already know, the safety valve for a water heater is used to relieve excess pressure from the tank that occurs while heating the water. In this case, a leak can occur in several cases, each of which we will consider in more detail.
Let's simulate the following situation: the water heater is disconnected from the network, the water supply from the water supply is turned on (the tap on the pressure line is open). Water is flowing from the boiler drain hole. The cause of this phenomenon may be either a malfunction of the safety valve or increased pressure in the line.
To find the cause of a leaking safety valve, you need to know the water pressure in the water supply
To determine the culprit of the leak, you need to measure the cold water pressure in the water supply. The fact is that if the main pressure exceeds the accepted SNiP, the valve will open and perform its functions of discharging excess water into the sewer. Most water heater safety valves that manufacturers equip their products with are set to a pressure of 6 to 8 atmospheres. The maximum pressure allowed by SNiP in main water pipelines should not exceed 6 atmospheres. In fact, it often happens that actual indicators exceed standard values by 1 - 2 atmospheres. Naturally, the safety mechanism will work.
The second cause of leaks may be the valve itself. Wear of its plate or seat, weakening of the spring - these are the factors that can lead to leaks. Cheap Chinese products are often susceptible to such malfunctions.
The possibility of scale or debris falling under the plate of the locking mechanism, which can happen during an emergency pressure release or after draining water from the boiler during preventive or repair work.
If the safety valve leaks, do not under any circumstances remove this part from the water supply system to the water heater. Remember that work storage water heater without a safety valve is prohibited and may lead to its explosion.
If the water heater is connected to the network and heats water for a long time without significant water intake, then the cause of the constant leakage is most likely a faulty safety valve. The fact is that during the initial heating of cold water, its volume in the boiler will increase by about 2-3%. This excess liquid will be discharged from the tank. In the future, the boiler simply maintains the temperature of the hot water, so there should be no leaks, so the cause should be sought either in a breakdown or in a clogged safety valve.
A completely different picture should be observed with increased water consumption, for example, while taking a shower: the constantly leaving volume of hot liquid will be continuously replaced cold water. But when it heats up, the excesses indicated above will begin to appear. Therefore, the flow of a certain amount of water from the drainage hole in this case is quite logical.
Safety valve device for water heater
And the third option is for a small, extended water withdrawal. For example, washing dishes or cooking. With such a flow rate of hot water, there should not be a constant leak from the drainage tube, but the periodic leakage of liquid drops will indicate proper operation water heater.
If the cause of the leak is a faulty valve, then it is replaced with a working part configured to the same operating pressure. When replacing, or better yet, while installing a water heater, try not to use cheap Chinese products. Remember that the safety of your family directly depends on the valve. Good Italian safety valves with the same non-separable design, although they cost several times more, are purchased once. As practice shows, there are no problems with them in the future. Connect a flexible transparent hose to the drain outlet of the device. This will help you visually evaluate the performance of the part. Lead the end of the hose into the sewer or a suitable container.
Products from famous manufacturers reliable and durable
To remove the valve for replacement or cleaning, you will need a plumber's wrench and an adjustable wrench. The work is performed in this order:
After cleaning or replacement, the part is put back in place in the reverse order.
Important note: you can connect the water heater to the network only after its tank is completely filled with water, otherwise the tubular electric heater may fail.
If the input pressure of your water supply system exceeds the nominal pressure for which the storage water heater is designed (this can be found in the technical data sheet for the device), a pressure reducer is installed at the water inlet to the apartment.
Installing a reducer at the inlet of the water heater will not only reduce the water pressure, but will also prevent the occurrence of water hammer, which adversely affects the coating of the internal tank of the boiler.
A filter for pre-purification of water must be installed in front of the gearbox, and its installation is carried out in strict accordance with the direction of liquid flow. Approximately half of the pressure reducers have a pressure gauge in their design, which greatly facilitates their setup and control of the parameters of the water supply system.
Water heaters are installed in houses, apartments, and commercial premises. They ensure the constant availability of warm water in the absence of hot water supply and during a boiler shutdown. There is no guarantee that the excellent quality of household appliances and installation according to the instructions will help avoid breakdowns. Often, consumers turn to repair specialists with a complaint that hot water does not come out of the boiler when turned on or its pressure is too weak.
Storage water heater diagram
The function of a storage water heater is to achieve and maintain the set water temperature. After prolonged use, situations may arise when the flow pressure becomes weak or cold water comes out of the tap instead of warm. These problems appear as a result of improper maintenance of equipment, for example:
Before turning on the equipment, you need to turn off the flow of hot water on the riser and open the tap on the mixer. If this is not done, the air will not escape from the tank and the tank will not fill. In addition, the heated water will flow through the riser to the neighbors, and cold water will flow from the boiler or will stop flowing altogether.
To find out the cause of the breakdown, you should first tighten the mixer valve, disconnect the device from the electrical network, empty the tank and begin inspection. You may be able to troubleshoot the problem yourself.
Hard water and high temperatures contribute to the rapid deposition of salts on the walls of the boiler and heating coil. Scale complicates the process of heating water, and a violation of heat removal can lead to burnout of the heating element. If during the inspection it turns out that the electric heater is covered with a layer of deposits, you need to perform the following steps:
If, after cleaning, the heating element is operational, then the structure is assembled in the reverse order. But what to do when the spiral fails? In this case, you will have to replace the burnt out electric heating element.
Scale on the heating element
In the water supply system, pressure surges from 2.5 to 7 atmospheres occur. To protect the boiler from deformation due to such differences, a special regulator is mounted at the inlet into it. After correct settings of this unit, water flows from the storage tank and the tap with the same force. The pressure at the inlet and outlet of the tank must be the same. If the water pressure from the device is too weak, you need to adjust the reducer or replace it.
Low pressure in cold water supply pipes can also cause insufficient water supply from the boiler. To make sure of this, you need to turn the valve on cold water. If it flows in a thin stream or is absent altogether, repair work is probably underway.
Pressure reducer
Water heating does not occur if the thermostat does not turn on the heating element. You can diagnose a part malfunction as follows:
Perhaps the overheating protection simply triggered and the device’s functionality has been restored. If the tester is silent, the thermostat is faulty and needs to be replaced.
Replacing the thermostat
Water flows out of the boiler in a thin stream - this may indicate a blockage in the mixer. You will need to unscrew the spout from the mixer body, rinse the filter mesh from debris, use a brush to go along the internal contour and put the structure back together. A faulty valve on a hot water tap can also cause low pressure. If the components are very worn, it would be better to buy a new mixer.
Installing a filter system at the inlet to the boiler will help to avoid frequent replacement of consumables.
Filling the boiler is only a simple matter at first glance. It is important to follow the correct sequence of this procedure:
Diagram of water movement in the boiler
The water heater is full, only now you should turn it on. This is how it should be ideally. But it happens that the boiler suddenly does not draw cold water, although the water supply is working. What can affect this behavior of the heat exchanger?
At the entrance to the boiler, the water is filtered to remove impurities. To do this, the design of the device has a mesh filter that traps debris and rust particles. The metal grate gasket becomes dirty and the garbage plug prevents the free flow of water. To resume normal filling of the boiler, you need to remove the plug from the flask and remove the mesh. Wash it in the same way as the mixer filter and return it to its place.
There are also replacement filters with gel filler. Poor quality material may leak and clog the pipes through which water moves. If this is your case, then saving the situation will be very simple: you need to buy a normal filter. But you will have to try and thoroughly clean the water intake pipes with a brush.
It happens that the cold water intake hose is connected to the heated water drainage point, and vice versa. Such a nuisance sometimes happens, especially if the installation was installed by a newbie. As a result, the functioning of the boiler is disrupted and water does not flow into it. The same can be said about an erroneous connection of a safety valve. A specialist will help solve the problem.
Boiler connection
To keep water in the boiler and prevent it from flowing back into the general water supply, a safety valve is built into the design of the device. It is located after the shut-off valve, at a short distance from the tank, and acts in one direction when drawing water. It is also designed to relieve excess pressure: when the water gets very hot, the valve locking device presses the spring. Excess fluid is released and the pressure stabilizes.
When worn out or when large particles get into the valve mechanism, it jams and does not allow water to flow into the boiler. It often happens that the chamber behind the disc spring becomes clogged with scale. You can return the unit to functionality by unscrewing the part, disassembling it into its components and thoroughly cleaning it. If the cleaning attempt is unsuccessful, the equipment should not be left without the valve.
Intensive use of water in summer period and a light degree of heating will cause the boiler to empty faster. It is also possible that a overpressure and the safety valve bleeds it, releasing some of the hot water. Or, conversely, low pressure in the main water supply, which does not push cold water into the boiler; it is always half empty.
In addition, the heating element was probably recently changed to a less powerful one. The position of the temperature regulator remains at the same level, and the heating element cannot cope with heating. There are many reasons why a water heater empties quickly, below are a few of them.
Boilers are made of durable materials that can withstand high pressure and weight. With heavy use and poor maintenance on inner surface corrosion forms in the tank - fistulas through which water leaves the tank. The development of corrosion is influenced by:
If the boiler is rotten, the holes cannot be sealed by welding. Such a housing cannot be used and should be in a landfill.
The boiler body is rusty
The check valve, reducer and other elements of the plumbing structure must be connected firmly, without gaps. The nodes must be sealed with tow, fum tape or plumbing thread and filled with sealant. If this is not done, weakly secured places will definitely leak sooner or later. Imperceptibly or obviously, water will leave the boiler, and this will lead to breakdown: if the thermal protection does not work, the heater will burn out.
Water leakage through the valve drain pipe can be considered normal if a liter jar is drawn drop by drop from it over the course of a day. This is the excess formed when pressure increases from heating. But sometimes it is impossible to determine the amount of liquid flowing out, since it goes down the drain hose into the sewer. If the boiler empties unusually quickly, you may suspect a weak valve. In this case, you will have to install a new part, and in general it is recommended to change this important unit annually.
Water drips from the valve - this is normal.
It is forbidden to empty the boiler through the safety valve opening! Scale and sediment can clog the drainage pores and the mechanism will stop functioning.
Anode for water heater
A properly installed and properly operated boiler can last up to 15 years. Its performance is influenced by various factors: from water parameters to the quality level of parts and components. In diagnostics and repairs, the “random” method should not be used; the main rule is to follow the requirements of the instructions.
Water heaters are used as the main or additional source of hot water supply in apartments and country houses. Complex device may fail due to various reasons, breakdowns cause a lot of everyday inconvenience and require urgent elimination. Let's take a closer look at why cold water does not flow into the water heater, why the pressure may decrease, and why difficulties arise with heating.
Water heater
First of all, you need to figure out the cause of the problem. Most often, owners of water heating equipment encounter the following malfunctions:
A boiler is a complex system consisting of many pipes of various diameters, filters, valves and faucets. Failure of any node can lead to malfunction of the entire system.
Boiler design
Here are the main causes of malfunctions:
First of all, you need to find the problem node. To do this, sequentially disconnect the parts from the inlet and see after which unit water stops flowing into the system. Once the problem area is found, repairs can begin.
Important! Any actions related to opening the casing of the water heating device lead to loss of the right to warranty service. Proceed with work only if the warranty period has expired. Otherwise, it is advisable not to violate the warranty rules, but to contact the service center.
Having discovered a problem unit, you need to begin restoring the boiler’s functionality. The procedure depends on the specific reason that is interfering with the normal operation of the device. Let's look at the most common situations.
Water heater clogged with scale
Scale is deposits of insoluble carbonate salts on the walls of water heating devices. It is found in teapots, washing machines, water heaters.
The amount of scale depends on the hardness of the water. In regions with hard water, even after a year of operation of the boiler, the amount of salts deposited on the walls may be sufficient to completely block the lumen of the heating element tubes or significantly narrow it.
If scale causes the water heater to fail, repairs must be carried out in the following order:
Dismantling the heating element
Cleaning the heating element from scale
If the heating element fails, you will have to look for a new one or buy a new boiler - you need to choose the most economical solution. If repairs require large financial expenses, it is more profitable to immediately purchase new equipment.
The pressure drops of the incoming water in the system can range from 2.5 to 7 atm. To compensate for surges, a special unit is installed at the boiler inlet - a gearbox. Its task is to ensure equal pressure at the outlet of the boiler and from the tap. If it falls due to a gearbox failure, it is necessary to adjust its operation or replace the broken part.
Low pressure in the main water supply also leads to a drop in pressure at the outlet of the water heating boiler or in instantaneous water heater. Unscrew the hose and check the pressure level: if water comes from the main water supply in a thin stream or does not flow at all, you should wait, as the problem may arise due to repair work. If the pressure has not been restored within several hours, you should contact Vodokanal.
If the water leaving the boiler does not heat up enough or does not heat up at all, the cause may be a failure of the thermostat - it is he who is responsible for maintaining constant high temperature. To carry out diagnostics, turn off the power to the boiler and remove the thermostat from the housing.
Typically, a thermostat malfunction is caused by the overheat protection tripping. As a result of the operations performed, the device should work, and the problems will disappear after it is installed in place. If the tester shows an open circuit, you will have to replace the burnt out thermostat.
If water comes out of the boiler with sufficient pressure, but flows out of the tap slowly, the reason lies in the faucet being clogged with scale or rust. You will need to turn off the water, disassemble the faucets and thoroughly clean the filter mesh. You also need to inspect everything sealing rubber bands and make sure that the valves are working properly.
If the described reasons have been eliminated, there is water pressure, but the boiler still cannot be filled, the cause may be an incorrect connection (the inlet and outlet pipes are mixed up) or a clogged mesh filter pad. It's easy to fix these problems: unscrew the hoses, rinse the filter and put everything back in the correct order.
Water heater operation diagram
Another cause of the malfunction is a broken check valve. It is installed at the entrance to storage tank and prevents water from returning to the water supply. It can also release excess pressure when overheated. Over time, the valve spring becomes clogged with particles of scale and rust, causing the valve to jam. Disassembly and thorough cleaning will help resolve the problem. If it was not possible to clean the part and restore its functionality, you will have to look for a replacement.
Having figured out why the boiler may stop working normally and how to eliminate the most common malfunctions, it is worth focusing on preventive measures.
Most breakdowns can be avoided by following simple recommendations care:
