Why the geyser does not heat water: troubleshooting and troubleshooting

Machine description

The internal structure of flow-type gas water heaters is the same and almost does not differ from different manufacturers. The main difference may be in the additional options (display, automatic gas ignition, second temperature sensor, etc.), in the appearance of the device or in the design.

A heat exchanger is installed inside - a finned copper tube through which the water flow moves. The burner standing under the heat exchanger heats the tube and the water passing inside it heats up. With a small pressure of water or its absence, the incoming flow is blocked by a valve (curtain), to which a spark ignition switch is attached. This is for fire safety.

Therm 4000 S WTD 12/15/18 AM E23/31.

Before starting, you must make sure that, on the plate installed by the manufacturer on the device, the gas marking corresponds to the gas connected to the device. It is possible to connect a remote control to the device, which completely duplicates the operation of the display on the column.

Open the gas cock and water valves. Connect the machine to the mains.

The water temperature set by the manufacturer is 42 degrees, this is the optimum temperature.

To turn on the device, you just need to press the power button and open the hot water tap. To control the temperature, you must press the "+" or "-" button and select the temperature you need. Until the temperature you have selected is reached, the reading on the monitor will flash.

If it does not reach this value within thirty seconds, the water faucet icon is displayed on the monitor, which indicates the need to increase or decrease the water flow. If you press the P button, the programmed constant temperature of 42 degrees will appear. Setting the minimum temperature reduces energy consumption and makes it possible to reduce the formation of limescale in the heat exchanger.

But if you know how to turn on the column, but encounter malfunctions (the flame goes out, does not ignite), then where the causes and methods for their elimination are described.

Troubleshoot the problem that is causing the ignition to fail. geyser when turned on water, it will not always work out on its own. Some breakdowns require the involvement of a specialist. On the other hand, the cause of problems in the operation of the water heater is not always associated with the failure of internal components and modules.You can fix minor damage with your own hands.

Electronics failures

The presence in modern models of a large presence of electronic components, on the one hand, ensures high safety of the device and ease of use, on the other hand, complicates troubleshooting and subsequent repairs.

The causes of electronics malfunction are mainly related to the influence of external factors - voltage drops in the network, lightning discharges that have fallen into the main gas pipes and water from leaks inside the device getting on the boards. In addition, the failure of individual electronic components due to failures in the electronics itself cannot be ruled out.

Cause it won't light up gas water heater vector, there may be a malfunction of the electronics, and the following situations may occur:

• Lack of spark during ignition;
• Extinguished digital scoreboard;
• The device does not start the first time;
• When working, it constantly shows an alarm signal;
• The protection system is constantly working;
• The device turns on, then turns off again;
• Diagnosing a breakdown usually begins with checking the batteries, old or dead batteries must be replaced with new ones. If there are traces of electrolyte coming out to the terminals, they must be cleaned.

If this operation did not lead to troubleshooting the device, you must call the wizard to check the electronic unit. Most often, in such models, the electronics unit cannot be repaired, it is simply replaced with a new one. During the replacement of the block, the master must examine all the nodes of the device, and when connecting a new block, in addition, test the system and configure its parameters

Particular attention is paid to the presence of leaks at the joints of the nodes and the integrity of the heat exchanger

Does the pressure of water affect the performance of the column?

The reason why the equipment does not ignite may be a weak water pressure in the supply pipe. Checking this is easy, you just need to turn on the cold water tap at the sink. If you see that the pressure is weak, then this is the reason. But if the pressure is excellent, then the problem of the malfunction lies in the water unit of the gas device itself. Most likely, the filters are clogged or the special membrane is deformed. In some cases, the hot water supply valve is clogged, which is covered with scale from the inside.

In very rare cases, the cause of low pressure is a deep filter, which is placed additionally. How to troubleshoot? If the pressure of the cold water supply is very weak in the public water supply, it is necessary to call the utility services to find out why this is happening. If the column does not ignite due to the fact that the filters are clogged, then they should be removed, washed with special products.

If the filters are very dirty, they need to be replaced, since it is already useless to clean them. In case of clogging of hot water pipes, it is necessary to call a master who can clean them; you do not need to do this work yourself. If the membrane is deformed, it is not necessary to try to straighten it, it is necessary to purchase a new one and install it. In case of clogging with combustion products and soot, the column should be turned off, then remove the casing and clean its components from traces of soot.

The column refuses to light up when turned on or goes out immediately, due to the fact that the supply of cold or hot water is not adjusted.In this case, one should not strive to dilute hot water by increasing the flow of cold water, as this will lead to a gradual attenuation of the flame and turning off the column. Such incorrect actions will shorten the life of the device. It is also necessary to correctly adjust all the taps during installation, if you cannot do it yourself, then it is better to call the master.

2 Reasons why a geyser does not heat water depending on the type

There are a number of common reasons why a gas water heater does not heat water well, including:

1. Heat exchanger dirty. This reason sooner or later applies to all gas water heaters. Most often, a gas column does not heat water precisely because cinders and other formations accumulate on the wall of the heat exchanger, which do not allow heat energy to heat the water sufficiently. For the same reason, the geyser burns, but does not heat the water;
2. Failure of the membrane in the burner. This reason leads to the fact that the power of the flame is not enough to achieve the desired temperature. In such a situation, the Bosch geyser does not heat the water well, and over time the situation will only worsen;
3. Overheating of key mechanisms associated with factory defects. As a rule, this concerns the heat exchanger, or conductors. There are complaints, leaving which, very often, the Neva gas water heater does not heat the water well for this very reason;
4. Reducing the level of gas pressure. This reason has nothing to do with the gas water heater equipment. But the gas system in your house may experience certain failures, due to which the vector gas water heater does not heat water well;
5. Failure of the ignition system battery. Sometimes the Junkers geyser does not heat water well for this very reason.

In addition, the lack of proper prevention, cleaning and maintenance, when signs of a malfunction are detected, can cause geyser Ariston does not heat water well.

Geyser

But it's not always easy to figure out the reason why. gas does not heat column. In such situations, it is advisable to consult a specialist.

2.1 Wizard's tips on how to make or set up a column so that it heats water

If gas column Neva Lux does not heat water well, you should heed the advice of the master on eliminating and solving problems.

If the Neva gas column does not heat up, and the heat exchanger served as the reason for this, you should start cleaning it. In order to clean the heat exchanger, and thereby improve heat transfer and normalize the water temperature, you should: shut off the water supply to the column, disconnect the device from all communications, remove the front case cover. Next, you can proceed to disassemble the heat exchanger. It is best to clean this element with a stiff brush.

In cases where the Neva 4513 geyser does not heat water well, due to insufficient flame power, the craftsmen advise: inspect the burner and ignition system for blockages or visible damage.

If the matter is clogging, the elements should be cleaned, having previously disconnected them from the system. If you find damage, it is better to contact a specialist, or replace them, if you have sufficient qualifications and experience.

Geyser operation

If you cannot find the answer to the question why the Junkers geyser does not heat up, perform a general inspection of the geyser design and its primary diagnosis.This procedure can help identify contamination or visual problems that are less common than the above.

Also, if the Bosch geyser does not heat up, you should check the mixers for the possibility of clogging. And also apply a purge of the entire hot water supply system, especially after a long stagnation.

In any of the above situations, if you are not confident in your abilities, or the level of your technical skills does not allow you to perform certain operations, you should not repair the geyser. The same applies if your device is still under warranty. Calling the wizard will solve all technical problems.

If the geyser does not heat water

It happens that the column turns on properly, does not go out during operation and pops are not heard, but the water still remains cold. The reasons why the geyser does not heat water are different.

Weak power

The reason for this problem is the insufficient power of the equipment. This happens when water is turned on simultaneously in several rooms at once, and the capacity of the column is not enough to process all processes. If the gas water heater does not heat the water well, then the solution would be to buy a device with more power. Alternatively, you can alternately turn on the water supply in different rooms.

Faults during installation

This problem is diagnosed immediately after installing a new device, when the column is not lit when it is first turned on. It indicates that when mounting the parts, the water supply hoses were mixed up. The problem disappears as soon as the water lines are installed correctly.

Why is the water from the column either hot or cold?

The causes of failures in flow and storage gas water heating equipment are different. In the latter case, malfunctions are not directly related to the water heater itself, but to the water supply system, more precisely, to the mixer taps. Depending on the type of column, the following malfunctions are diagnosed:

• Flow column - if it comes from the column, then hot, then cold water, the problem lies in the pressure in the pipeline. Pressure surges are reflected in the intensity of liquid heating. At low water pressure, the column turns off, then turns on again, which leads to a change in heating. Even in water heaters with a modulating burner, the differences will be noticeable and will affect the comfort of water procedures. You can solve the problem by installing a booster pump for cold water. After installation, low water pressure will not affect the operation of the water heater.
• Storage boiler - the principle of operation is different from a flowing gas water heater. The water is heated to the desired temperature in the tank and the hot water supply has a stable temperature. Temperature fluctuations are associated with rubber gaskets on rotary crane boxes. The water heater brings the water temperature to 60-90°C. Rubber gaskets expand due to heating, the duct narrows. When mixing hot and cold water, the consumer will inevitably encounter temperature changes. The way out of the situation: replace the mixer taps with semi-rotary ceramic crane boxes.

Constant drops in water heating temperature are no longer associated with malfunctions of the water heater, but with the characteristics of the supply of cold water and features in the operation of storage equipment.

Typical problems of individual models

Experts have identified malfunctions of individual models of gas water heaters, which occur most often.

"Aster":

• Frequent problems with the solenoid valve.
• If the mixer is not adjusted correctly, it works unstably.

"Ariston":

• Problems with the water node.
• Rapid membrane wear.

"Oasis":

• Burner problems.
• Membrane disruption.

Amina:

Fast discharging of batteries.

"Rossiyanka M":

• Valve failure.
• Clogged filters.

"Dion":

The heat exchanger burns out quickly.

In order for the equipment to work as long as possible, follow simple rules:

• Set the temperature correctly so that you do not have to mix cold and hot streams. The higher the set temperature, the faster the scale builds up.
• Install a purification filter that will soften the water, rid it of impurities.
• Clean the internal elements from soot and soot.
• High Power Appliances

Providing our apartments with hot water. It can be big or small, old or new, it can be lit with matches or a button. But sooner or later she will start to act up.

Breakdown prevention

To avoid problems with the operation of the geyser, it is necessary to carry out its prevention at least 1 time per year. For these procedures, it is recommended to call professionals, but if you want to save money and perform these steps yourself, you need to disassemble the device, first cutting off the gas supply, and thoroughly clean the inside with a brush or rag. To improve the effect, you can use a vacuum cleaner.

So, if the gas water heater does not heat the water well or does not heat it at all, it is necessary to diagnose the device to identify the cause of the malfunction.This problem can be caused by many breakdowns of this type of water heater, many of which occur due to the lack of regular preventive maintenance of the device. After a malfunction is detected, you can try to fix it yourself or seek help from specialists if you are not confident in your own abilities.

Troubleshooting

Cause

What to do?

Soot deposits on the heat exchanger

The problem is solved by simply cleaning the heat exchanger

You can remove the soot layer with a stiff brush, the main thing is to be careful not to damage the metal surface. Weak flame in the burner

Weak flame in the burner

A visual inspection of the water unit should be carried out, having previously disconnected its gas equipment. If the membrane is intact, check the condition of the rod - it should not be contaminated, and its movements should be smooth and even.

Hole in the membrane

If during inspection of the water unit, damage to the membrane is found, it is imperative to replace it with a new one (specialists recommend silicone membranes, since their service life is longer).

Scale in the heat exchanger

Scale deposits, if they did not lead to internal damage to the device, can be easily removed with improvised means, for example, citric acid

In case of serious damage to the heat exchanger, it would be more expedient to replace it.

For information on how to deal with soot in a heat exchanger, see the video of the Youtube channel "TVorim".

Identification of the reason why the geyser does not ignite and troubleshooting

To determine the reason for the absence of a flame in the column wick, it is necessary:

• Open the front panel of the instrument.
• Check the condition of the nozzle and air suction holes, gas supply pipes to the igniter. If there is soot, dirt: remove it from the wick.

Ignition system for semi-automatic gas water heaters.

Examine the piezoelectric element for spark generation. If it is absent, inspect the wires, terminals for mechanical and other damage. Oxides on the contacts must be removed, damage repaired.

• Determine the thermocouple voltage. To test the heat generator, unscrew the special plug of the electric valve. Carefully remove the special cable that comes from the thermocouple. Using a multimeter in DC voltage test mode, connect one probe through the crocodile clip to the outer sheath, lean the other against the center contact. Since the placement height between the contacts is small, make sure that the probes do not touch each other. Heat the working end of the thermocouple with a lighter. If the voltmeter readings correspond to 15 - 30 mV, the part is in good condition, with other values ​​\u200b\u200bthe generator must be replaced. If the special wire is not suitable for further use, replace the entire thermocouple.
• Examine the valve inductor. In the valve connector, which was released when checking the thermocouple, insert one end of the probe into the middle of the connector, the other into its body. Tester in ohmmeter mode. The coil resistance should be in the range of 10-15 ohms. If the circuit is open or closed, the ohmmeter will record the value 1 or 0, respectively. The coil changes modularly, together with the stem and valve.

Check the correctness of the control sensors.At room temperature, the control contacts of the sensor are in the closed state. Using a multimeter, in diode test mode, examine the two sensor leads for continuity. The tester reading with a working sensor will be 0, in other situations, when the values ​​\u200b\u200bcorrespond to 1 or a resistance of 1 - 600 Ohms, it must be removed, and a serviceable one should be installed in its place.

Check the condition of wires and connections. Wires with sensor contacts are connected by soft soldering, with a special plug to an electromagnet and a thermocouple. Carefully inspect the wires, soldering points, plug-in connection. Sometimes microcracks form at the soldering points, due to which the integrity of the entire chain is violated.

After each eliminated remark, it is advisable to check whether the column lights up or not.

Consider the example of Bosch WR10.B, WR13.B, WR15.B gas instantaneous water heater models made in Germany, for the markets of Russia, Ukraine, Belarus. These models differ in the amount of heated water.

Before starting, check if the gas and water valves are open, if two 1.5 V R batteries are inserted. These models of heaters are equipped with electric ignition, as evidenced by the index B at the end of the name. Electric ignition takes place using batteries.

To turn on the device, you need to press the power button on the front panel of the device, the column is prepared for operation, is in standby mode. In order for the heated water to go, you just need to open the tap. At this point, the pilot flame is ignited and after four seconds the main flame is ignited, so that the pilot flame is extinguished after about twenty seconds.

These devices do not have a constantly burning wick, which is economical as there is no constant gas flow. During a long break in operation, air can accumulate in the gas system, which will prevent the correct operation of the igniter and, as a result, the main burner will not be able to ignite.

To fix this problem, you need to open and close the hot water tap several times. Water heating is regulated by reducing its flow, by turning the valve clockwise it decreases, counterclockwise, respectively, vice versa, the flow increases and the temperature decreases. At a low water temperature, gas costs are reduced and less scale is formed in the heat exchanger.

On the video, in addition to the startup procedure, you can also learn about setting up the column:

Filter types

They will protect the boiler from the ingress of finely dispersed impurities, scale, and as a result, the occurrence of noise effects.

The following types of filters are installed on water heaters, the introductory group of the water supply system:

1. Rough cleaning. Capture mechanically suspended particles (up to 1 micron).
2. Fine cleaning. Ionic filters are additionally cleaned from small particles of impurities, including metals. Membrane (osmosis method) additionally neutralize chemical impurities.
3. Cleaning systems using various adsorbents (physico-chemical method).

The most effective are combined types of filters with multi-stage cleaning.

Water filters