Why does not water come from the water heater. Why the water heater is leaking, what to do, what to fix the leak

In an apartment or a country house, such a boiler allows you to solve the problem hot water if there is running water and electricity. You can list for a long time positive points from the use of water heaters and it is very unpleasant when it breaks down.

It is worth noting that there is no household appliances that would work forever. Moreover, this is contrary to the goals of the companies that produce water heaters.

If they work forever, then the demand for them will dry up as soon as all comers are provided with these devices. Consider the main causes of damage associated with leaks.

Leakage reasons

A storage water heater is a fairly simple device. Its basis is a container made of steel, covered from the inside with a protective layer, which prevents premature corrosion of the walls of the container and, accordingly, prolongs the service life.

The inner surface coating can be made of enamel, glass enamel, glass ceramics, a protective titanium layer, a stainless steel layer, etc. Usually this coating is the development of the manufacturer itself, and is kept in strict confidence.

In the lower part of the boiler there is a cover, into which a heating element, a thermostat and a magnesium anode are mounted. There is also a thermometer in the tank. At the bottom, an inlet pipe from the water supply is supplied to the boiler and a hot water pipe is led out, leading to the shower and kitchen sink mixers.

Outside, the tank is covered with a layer of polyurethane foam insulation and a decorative metal casing. The main reasons that contribute to the premature failure of the boiler tank are the following:

if in plumbing system pressure of more than 2 atmospheres, it is necessary to put a reduction gear in front of the boiler, since when heated, the pressure will rise even higher, and an unacceptable deformation of the walls will occur with violation of integrity protective coating;
there is no safety valve installed directly in front of the boiler entrance, which releases overpressure when heating water in a water heater;
if the boiler is not prevented once a year, then scale forms on the walls and the heating element, which impairs the operation of the heating element and leads to premature wear of the boiler itself. It is also necessary to change the magnesium anode once a year to prevent wall corrosion.;
heating the boiler to a high temperature above 70 degrees Celsius. The best option would be to operate the water heater at temperatures up to 50 degrees;
do not drain the water from the boiler to long time, - this leads to premature corrosion of the metal.

Applying in practice all of the above precautions, you can significantly increase the service life of the storage water heater and thereby provide yourself with comfortable conditions on long years.

Repair

To carry out the installation, prevention and repair of a water heater, you must have certain knowledge and a set of tools, which includes:

a multimeter for checking the electrical circuits of the water heater;
adjustable spanner for different sizes nuts;
set of socket wrenches;
Phillips and flat screwdrivers;
Lantern.

Types of leaks

There are several options for faults and leaks:

If the boiler is leaking from the top or bottom

It is necessary to disconnect it from the mains, substitute a basin and make a thorough visual inspection. Water leaks can be different: water can simply drip, or it can pour out under pressure. In most cases, water flows out from the bottom of the water heater. Use a flashlight to find the source of the leak.

The simplest case is when the leak comes from a safety valve. It is adjusted at the factory so that the excess pressure when heating the water is vented through a small fitting.

A simple solution to this problem is to drain this water into the sewer using a plastic flexible tube with a diameter of approximately 8 mm. In this case, you need to think about where to connect the other end of the tube. If the boiler is hanging in the toilet, you can lead this tube into the cistern;

Leakage from joints

The source of the leak can be from loose connections of the supply and discharge pipelines in the boiler itself. This can be eliminated simply - everything is repackaged threaded connections;

Leakage from under the cover

A more serious option when a leak is found from under a plastic decorative cover, which covers all electrical components of the boiler from below. In this case, unscrew the bolts and remove the bottom cover.

Further, with the help of a flashlight, the place where the water flows from is determined. If leaks are found from under the cover, this is one of the most best options... Since the cover is pressed against the boiler body through the gasket, you can try to eliminate the leak by tightening the nuts of the bolts on the cover.

If this does not work, it is necessary to drain the water from the boiler, remove the cover and change the gasket. And before that, you need to disconnect everything electric wires.

Advice: in order not to be confused in the future, you can pre-photograph all connections with a digital camera or smartphone and display them on the laptop screen.

If the reason is not in the gasket, but a leak from the cover itself at the entry points of the heating element, then it may be necessary to change both the heating element and the cover itself for analogues. Now in online stores, you can find various spare parts for boilers of any manufacturers and different brands.

These are, perhaps, all the options in which you can eliminate boiler leaks without replacing it. However, in most cases, about 80 percent, the leak comes from the top or bottom of the boiler body.

It's important to know: often the place of the fistula in the body is almost impossible to determine, since it is covered thermal insulation material and an outer casing. Water can flow down under the thermal insulation or flow out in the area of the thermometer. At the bottom of the boiler there are special holes, when water leaks from which it is possible to determine exactly what is flowing water heating tank.

These are the most difficult and disadvantageous options. All of the listed leak options are among the most common brands on the market, such as Ariston and Termex.

When repairs are not possible

In all cases, when it is precisely determined that water leakage occurs due to the depressurization of the boiler tank, no matter for whatever reason, the solution to the problem is to replace the water heater with a new one.

It is worth noting that this is an absolutely stupid idea - to brew the boiler outside, since:

firstly, all boilers are covered from the inside with a special coating, which cannot be restored, and it does not tolerate the effects of electric welding;
secondly, if one fistula has formed, there is no guarantee that after a while one or many fistulas will not appear in other places;
after removing the outer casing and thermal insulation, it is almost impossible to bring the water heater back to its original form.

There is only one conclusion - when a through hole is formed in the case, it is impossible to repair it, all that remains is to replace it. It is worth saying that according to the experience of service centers, all modern species boilers have a service life of 5 to 8 years, come across good options that serve for 10 years.

It all depends on the methods of operation, periodic prophylaxis. If it happens that a leak occurs during the warranty period, it can be easily replaced with all Required documents and a check from the selling store.

Detailed video instructions on how to determine the causes of malfunctions in the boiler and solve the problems, see below.

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Ataman Started by -> Visitor 16 Feb 2016 18:43 # 2 by Electro-Plumber Electro-Plumber replied in the topic Why does not hot water flow when the boiler is reconnected It's 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 sour. One of the cranes could have broken. Etc. Please Login or Register to join the conversation.

I have an Ariston storage water heater. Purchased 2 months ago. It worked without problems, but suddenly hot water stopped coming out of it. He works himself, heats it up, but the water does not flow. We replaced the non-return valve, time passed, everything became normal. Now hot water is not running again. All pipes and hoses are new. We cannot understand the reason. Please, help!

Hot water from the water heater began to flow badly

Good day, recent times found that hot water began to flow under a 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 the pressure of cold water. The boiler is supplied with two metal-plastic pipes... One for the inlet of cold water, the other for the outlet of hot water. What measures can be taken to return the previous pressure? can somehow clean the pipe or flush the boiler?

Boiler does not collect water, runs out quickly or hot water does not flow, low water pressure

Water heaters are installed in homes, apartments and commercial premises. They ensure the constant availability of warm water in the absence of hot water supply and during the shutdown of the boiler room. There is no guarantee that the excellent quality of household appliances and installation according to the instructions will help to avoid breakdowns. Often consumers turn to repair specialists with a complaint that hot water does not come out of the boiler when it is turned on or its pressure is too weak.

Why does not hot water come from the boiler

Such household appliance as a water heater is very popular. Convenient and not demanding to maintain, it has found its application both in private houses and in apartments. However, not everything is as smooth as it might seem, and sometimes the owners are faced with incorrect operation of the equipment. The reasons that, for example, hot water does not come from the boiler when the tap is opened, may be different. If a problem occurs, do not panic and change the device to a new one; in most cases, breakdowns can be repaired.

Ariston BS II 24 hot water is intermittent - YouTube

I have an 80 liter Ariston water heater installed. It was the turn to change the anode. A specialist came and changed the anode. After that, I cannot use the storage boiler - neither wash the dishes, nor go to the shower. The trickle of hot water was gone. Maybe it got clogged with sludge hot pipe... Help! Why could this be? Sanya Back to top Complain about this messageReply with quote There is pressure, but the hot water barely flows. Why, what to do with the boiler? Sergey N »23 Jun 2014, 10:55

Why does not hot water come from the boiler and why does the Termeks water heater poorly release warm water?

Clogged filter rough cleaning at the input to the boiler. If you have old pipes or goes 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 cap from the flask with a key and remove the mesh. Also, the problem is solved by installing an additional filter.

How to turn on the Ariston water heater - All about heating and air conditioning

In summer, hot water is turned off in most apartments with centralized water supply. Utilities during this period carry out repair and preventive work... Alternatively, the vast majority of people prefer to buy water heaters - instantaneous or storage, depending on the needs and budget.

Malfunctions of Ariston water heaters, error codes

Boilers "Ariston" are popular among consumers. But they are not insured against breakdowns, despite the ease of use and ease of installation. In the article we will tell you about the malfunction of the Ariston water heaters. You will learn how to find a breakdown, repair or replace a part.

Good evening! Why does not hot water come from the water heater ...

ELECTROLUXE Malfunction of the water heater Electrolux EWH 100 liters. Can't turn on. when trying 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 Combustion. The indicator is on, shows the temperature, clicks when turned on, but there is no voltage on the heating elements. Defective

Control block?

Do-it-yourself repair of a water heater ariston 80 liters ...

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 descale it. Due to the increase in fees for utilities, and for hot water supply, including, more and more residents buy water heaters for constant supply to an apartment or house hot water... The boiler is easy to operate, does not take up much space and makes it possible to use it at any time.

Water heaters are used as main or additional source hot water supply in apartments and country houses... A complex device can 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 there are difficulties with heating.

Water heater

Why the water heater does not work

First of all, you need to figure out the cause of the problem. Most often, the owners of water heating equipment are faced with the following malfunctions:

The water pressure at the outlet of the water heating equipment decreases.
The boiler draws water and heats it, but there is no water at the outlet.
Water does not enter the boiler tank.

The boiler is a complex system consisting of many pipes of various diameters, filters, valves and valves. Failure of any unit can lead to failure correct work the entire system.

Boiler design

Here are the main causes of malfunctions:

Precipitation of insoluble carbonate salts (scale) on pipe walls, valve parts or valves.
Ingress of rust particles.
Blocking the flow of water by an air bubble.
Failure of a valve or valve (jamming of parts).

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 the water stops flowing into the system. When the problem area is found, you can start repairing.

Important! Any actions related to opening the case water heater will void the warranty. Only proceed to work if the warranty has expired. Otherwise, it is advisable not to violate the warranty rules, but to contact the service center.

Trouble-shooting

Having found the problem node, you need to start restoring the boiler's performance. The procedure depends on the specific reason that prevents the normal operation of the device. Let's consider the most common situations.

Limescale clogging

Scale clogging up the water heater

Limescale is a deposit of insoluble carbonate salts on the walls of water heating appliances. She is found in teapots washing machines, water heaters.

The amount of lime scale depends on the hardness of the water. In regions with hard water, even after a year of boiler operation, the amount of salts deposited on the walls may be enough to completely block the lumen of the pipes heating element or narrow it down substantially.

If scale has caused the water heater to fail, repairs need to be carried out in the following order:

Open and remove the protective cover from the water heater.
Unscrew the nuts holding the heating element in place and remove it.

Dismantling the heating element

Wash the walls of the boiler and the heating element coil from carbonate deposits. Organic acid - lemon or oxalic acid - will help dissolve the hard crust. You can use and industrial facilities- antiscale. Soak the part in an acidic solution to loosen any accumulated deposits.

Cleaning the heating element from scale

Using a tester, make sure that the heating element coil has not burned out due to a violation of heat dissipation by scale.
If the coil is intact, assemble the device in order, reverse order dismantling.

If the heating element is out of order, 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 costs, it is more profitable to immediately purchase new equipment.

Failure of the pressure reducer

The pressure drops of the incoming water in the system can be from 2.5 to 7 atm. To compensate for surges, a special unit is installed at the boiler inlet - a reducer. Its task is to ensure equal pressure at the outlet from the boiler and from the tap. If it fell due to the failure of the gearbox, 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 come at all, it is worth waiting out, as the problem may arise due to renovation works... If the pressure has not recovered within a few hours, it is worth contacting Vodokanal.

Broken thermostat

If the water leaving the boiler does not heat up enough or does not heat up at all, the reason may be the failure of the thermostat - it is he who is responsible for maintaining a constantly high temperature. To carry out diagnostics, turn off the power to the boiler and remove the thermostat from the housing.

Press the thermostat button.
Heat the copper tip of the thermostat. If the node is healthy, the button should be disabled.
Ring the electrical circuits of the thermostat with a tester.

Typically a thermostat malfunction is caused by an overheating protection trip. As a result of the operations carried out, the device should work, and the malfunctions will disappear after it is installed in place. If the tester shows an open circuit, you will have to replace the burned out thermostat.

Mixer clogged

If water comes out of the boiler with sufficient pressure, and runs slowly from the tap, the reason lies in the faucet clogging with scale or rust. You will need to turn off the water, disassemble the mixers and thoroughly clean the filter mesh. You also need to inspect everything sealing gum and check that the crane towers are working properly.

If water does not flow into the boiler

If the described causes are eliminated, the water pressure is present, and the boiler still cannot be filled, the reason may be incorrect connection (inlet and outlet pipes are mixed up) or clogging of the mesh filter pad. Fixing these problems is easy: unscrew the hoses, rinse the filter and put everything back in the correct order.

Water heater operation diagram

Another reason for the malfunction is a breakdown. check valve... It is installed at the entrance to storage tank and prevents water from returning to the water supply. It can also relieve excessive pressure when it overheats. Over time, the valve spring becomes clogged with scale and rust particles, causing the valve to jam. Disassembly and thorough cleaning will help eliminate the problem. If it was not possible to clean the part and restore its performance, you will have to look for a replacement.

Having figured out why the boiler can stop working normally and how to eliminate the most common malfunctions, it is worth dwelling on preventive measures.

Most breakdowns can be avoided by performing simple recommendations for care:

Do not overheat the water. Less temperature - the slower the formation of scale, leading to breakdowns.
Many boilers are designed to use softening cartridges. Do not skimp on water softening, as this will help avoid repair costs.
When leaving for a few days, turn off the device without draining the water. But turning it off at night to save energy is impractical due to the high wear and tear of the electrical part.

Owners who have installed a storage water heater in their home often have questions about the operation of its safety valve. Is water leakage from this device a norm or a breakdown? And if a loop of water should take place, then in what quantities and how often? We have already considered the device and principle of operation of the safety valve for the 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 the water heater serves to relieve excess pressure from the tank, which appears during water heating. In this case, a leak can occur in several cases, each of which will be considered in more detail.

Leak when the boiler is off

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). From drain hole boiler is running water. The reason this phenomenon there can be both a malfunction of the safety valve, and high blood pressure in the highway.

To find the cause of the safety valve leak, you need to know the water pressure in the water supply

To determine the culprit of the leak, it is necessary to measure the pressure of cold water in the water supply system. The fact is that if the main pressure exceeds the adopted SNiP, then the valve will open and will perform its functions of dumping excess water into the sewer. Most of the safety valves of water heaters with which manufacturers complete their products are set to a pressure of 6 to 8 atmospheres. The maximum pressure allowed by SNiP in the main water pipelines should not be more than 6 atmospheres. In fact, it often happens that the actual indicators exceed the normative ones by 1 - 2 atmospheres. Naturally, the safety mechanism will work in this case.

The second cause of leaks may be the valve itself. The wear of its plate or seat, the weakening of the spring - these are the factors that can lead to leakage. Often, cheap Chinese products are prone to such malfunctions.

The likelihood of scale or debris falling under the plate of the locking mechanism, which can happen during an emergency release of pressure or after draining the water from the boiler during maintenance or repair work, must not be dropped from the weighing pan.

In the event of a leaking safety valve, never remove this part from the water supply to the water heater. Remember that the operation of the storage water heater without a safety valve is prohibited and may lead to its explosion.

Video: What does the operation of a boiler without a safety valve lead to?

Leaking valve during operation of the water heater

If the water heater is connected to the network and heats the water for a long time without significant drawdown, then the fault of a constant leak 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 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 intake, 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 excess 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.

Water heater safety valve device

And the third option is with a small, extended in time water intake. For example, washing dishes or preparing food. With this flow rate of hot water, a constant leak from drain tube It should not be, but the periodic outflow of liquid drops will just indicate the correct operation of the water heater.

How to troubleshoot

If the cause of the leak is a faulty valve, then it is replaced with a serviceable part set to the same working pressure. When replacing, or better, even during the installation of 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 bought once. As practice shows, in the future there are no problems with them. Connect a flexible transparent hose to the drain outlet of the device. This will help you visually evaluate the work of the part. Lead the end of the hose into a drain or a suitable container.

Products from renowned manufacturers are reliable and durable

To remove the valve for replacement or cleaning, you will need a plumbing and adjustable wrench. The work is performed in the following order:

Disconnect the boiler from the network;
Turn off the cold water supply tap to the water heater;
Open the hot water taps and completely drain it from the container;
Push the lever on safety valve and remove the remaining liquid from the tank;
Disconnect the cold water pipeline from the safety valve;
Dismantle the valve.

After cleaning or replacing, the part is reinstalled in the reverse order.

Important note: it is possible to turn on the water heater into the network only after the tank is completely filled with water, otherwise the tubular electric heater may fail.

If the inlet pressure of your water supply system exceeds the nominal pressure for which the storage water heater is designed (you can find it out from technical passport per 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 lower the water pressure, but also prevent the occurrence of water hammer, which adversely affects the coating of the internal tank of the boiler.

A filter for preliminary water purification must be installed in front of the gearbox, and its installation is carried out in strict accordance with the direction of fluid flow. About half of the pressure reducers have a pressure gauge in their design, which greatly facilitates their adjustment and control of the parameters of the water supply system.