The flame does not ignite in the Bosch geyser: finding the cause of the malfunction and repair recommendations

The problem of lack of hot water is relevant not only in remote villages and towns, suburban homes of the private sector, but also in apartments of apartment buildings. That is why water heaters remain in demand and are in demand.

However, as with all technical equipment, in gas columns at certain periods of use, malfunctions appear that interfere with normal operation. One of the most common problems - the flame in the gas column does not lightBosch. In our article, we will consider the causes of this problem in various types of geysers and methods for their elimination.

Features of ignition of gas columns Bosch

A gas-fired gas water heater, which has been given the household name “gas column”, is a technical device in which water is heated using energy released during the combustion of domestic gas.

Different models of brand water heaters, which differ in functionality and design, also have a different type of ignition. Therefore, the causes of problems with ignition of the flame may vary. But in order to diagnose them, for a start it is advisable to familiarize yourself with the general outline of column device.

The basic design of the gas column used for all models manufactured by Bosch. The main difference between the models is the type of ignition and the location of the modulation control knob

GeysersBoschDespite many modifications differing in the type of ignition and performance, it corresponds to the general assembly scheme and consists of the following elements:

• gas fittings - a curved metal tube through which gas flows and gas flow control elements;
• gas wick - a device for igniting a flame;
• burner - the place where the gas combustion process takes place;
• heat exchanger - a special tank through which a tube with running water passes; this is the place where water is heated;
• combustion gas temperature sensors - a necessary element for monitoring the correct operability of the column;
• buttonpiezo ignition — necessary to run the column;
• column modulation knob - it is used to increase the power of gas supply;
• removal of combustion products.

Columns of different series may differ in the type of ignition, a set of sensors and other structural elements. Next, we will get acquainted with the main ones that are important in the case of self-diagnosis of a malfunction.

SeriesTherm 2000 O

Affordable version. Average productivity: 10 liters of hot water heats up to the necessary temperature in 1 minute. The device of this series is equipped automatic ignitionwhich runs on batteries.

Also included in the design are sensors and sensors for monitoring gas flow, flame control, and traction control.

The Therm 2000 O model is mechanically controlled and limited by heating temperature. Using the modulation knobs on the front panel, you can build the necessary gas supply force manually

SeriesTherm 4000 o

Models in this series are available in 2 versions: with automatic ignition from batteries andpiezo ignition. Different in power, they can heat from 10 to 15 liters of water per minute.

Geysers of this model have several advantages:

• uniform regulation of column modulation, which allows you to maintain the set water temperature;
• heats water even with a low pressure of a pressure of a stream (sufficient pressure - 0,1 Atm).

To distinguish the ignition option in the designation of these gas water heaters are used letters B - columns with automatic ignition, and P - columns withpiezo ignition.

The gas flow regulator in the Therm 4000 O Series column allows you to more accurately set the water temperature. They are also equipped with the highest quality copper heat exchangers. Their serviceability increased to 15 years

SeriesTherm 4000 S

Columns of this series are often installed in apartments with a problematic chimney. The intake of air and the removal of combustion products takes place in the external wall coaxial chimney.

Also installed on the front side electronic control panel. This makes it possible to control the performance of the column (in case of a violation, information about the malfunction is displayed on the panel), and also to set the minimum error of the water temperature - 1 degree.

Power output is in the range of 12-18 liters of water per minute. The main disadvantage is that in the absence of electricity the column will not work.

Therm 4000 S Series speakers do not require a chimney mount. Thanks to the presence of a fan, forced draft is provided. Installing a coaxial chimney requires specialist assistance

SeriesTherm 6000 o

Used in this series of gas water heaters integrated hydro generator allows automatic ignition of the flame when opening the tap with water.

On the front side there is a liquid crystal display that displays the temperature of the outgoing water. However, this parameter is set mechanically using the knob. Productivity of water heaters of this series is 10, 13 and 15 liters of water per minute.

The Therm 6000 O Series water heater is equipped with HYDRO POWER technology, which eliminates the need for batteries or a piezoelectric element for ignition. Maintained water temperature is displayed on the front panel

Series Therm 6000 S and 8000 S

These models were made for public use (kitchens of restaurants and canteens, public baths, showers in factories, hospitals, factories). They are able to provide hot water up to 5 points without loss of degree. The display is used to make settings. Ignition for this type - electric.

To ensure the power of the gas water heaters of the Therm 6000 S series, several fans are used simultaneously. In Therm 8000 S models, condensation technology is used to efficiently heat the water flow.

Why does the speaker not light or go out?

Periodically occurring violations in the operation of these devices are not associated with technical defects, but with depreciation during operation. Like any technical tool, geysers must be periodically carried out Maintenance.

List of major faults:

• it is impossible to start work from the first attempt of ignition;
• wick attenuation;
• ignition attenuation upon changing the water supply power by the tap on the mixer;
• weak heating of water;
• the igniter periodically goes out;
• low water pressure through the gas pipe system.

In the event of these malfunctions, it is not necessary to contact the master, because some of them can be solved independently by performing a certain algorithm of work and observing safety rules.

To solve the problems, it will be necessary to remove the outer casing of the column. Regardless of the type, before removing, it is necessary to unscrew the fasteners

Problem # 1 - the flame does not light on the first try

To begin with, it is worth performing the most elementary activities - check the situation water and gas valves. In the absence of supply of one of them, the column is blocked automatically.

If batteries are used to start the column, then it is necessary to check their operability. And in case of discharge replace with new batteries.

Provided that the problem persists, the next step is to check the chimney. Any ingress of debris and even volume accumulation of soot on the walls of the chimney can lead to failure - lack of draft. Keeping the chimney clean is a necessity that will prevent carbon monoxide from entering the interior.

In the absence of a traction sensor that constantly monitors the level of traction during operation, you can check for its presence yourself. It is enough to use a burning match, which must be brought to the hole in the column. The lack of flame bias will indicate a clogged ventilation system. Turn off the column and clean the chimney.

Another reason could be weak water pressure. This is visually determined when the tap is opened.

If the pressure is sufficient, the problem may be:

• contamination of the strainer of the water system;
• in pollution of the water system itself;
• blockage in the mixer filter.

If the first problem can easily be solved by washing the strainer, then to solve the second and third problems it will be necessary to unscrew the pipes at the inlet, having previously turned off the gas and water supply, and flush the system. special cleaning agent.

To solve the problem of mesh filter contamination, it is necessary to remove the water unit, disassemble it, thoroughly clean and rinse the mesh

The next reason is weak gas pressure. This malfunction must never be fixed by yourself. Be sure to contact a specialist.

Incorrectly set igniter may be the reason for the malfunction of the column. This occurs when the gas pressure in the line does not match the type of igniter. In case of low pressure, the gas necessary for ignition goes down. For more stable operation of the ignition system, it is necessary to mount an electrode that produces a spark to the center of the burner.

Problem # 2 - attenuation of the gas boiler wick

Problem whenthe wick goes outwhen working in a Bosch gas column, it can be caused by a weak gas supply. This problem may be caused. contamination of the ignition tube dust particles and soot.

To solve, you need to remove the gas column housing and properly disconnect the ignition tube. To clean the inside of the tube, it must be purged. The edge on which carbon deposits have accumulated is cleaned with sandpaper or other grinding material.

In the event of popping that is uncharacteristic for normal operation when popping up, the flame position of the ignition wick should be checked. Pops appear when the fire does not light up immediately, due to which excess gas accumulates. This problem should be fixed immediately by calling the wizard.

When reinstalling, it is necessary to restore the tightness of the tube, connecting it to the required limit with the gas supply tube.

Problem # 3 - column attenuation during its operation

There are situations when the gas column of a brand Bosch suddenly goes out and stops working, it is necessary to identify how long after ignition this happens.

If the shutdown immediately after starting (after 3-5 seconds), then most likely the matter is ionization sensor breakdown. In this case, it is necessary to check the wiring between the sensor and the control board and, if it is working, replace the sensor.

When the column goes out after a few minutes of operation, this may be due to:

• weak draft of gas;
• sensitivity of the alarm relay.

You can check the gas draft in the entire gas system by turning on the gas stove. If the gas supply is visually normal, then the problem is the system of gas supply to the column. To solve it, you need to call a specialist.

Also, the draft problem can be caused by clogging of the chimney or pipes of the heat exchanger clogged with scale.

When scale, soot and soot accumulate on the walls of the heat exchanger, the color of the burning flame changes. Instead of blue, it turns yellow. To eliminate the malfunction, it is necessary to remove the casing and clean the heat exchanger.

Another reason may be broken functionality. alarm relay. To do this, open the windows and properly ventilate the room. Then again try to start the device. If the column is working again, then it is the sensitivity of the relay. This item must be replaced.

Mixing a stream of hot water with cold can also cause column attenuation. In order to eliminate this problem, it is necessary to carry out the adjustment correctly.

Problem # 4 - the gas igniter goes out

One of the important elements of a water heater is an ignitor. It is necessary for the smooth operation of the device, so it must work continuously.

To understand why in a gas columngoes out ignitor, you need to check the following probable causes:

• thermocouple malfunction;
• the appearance of external air flows;
• chimney pollution.

To stop the unstable operation of the gas column, an element is used - thermocouple. This is a safety device whose function is to timely shut off the gas flow. In the case of fading igniter, it blocks the flow of gas.

Thus, when a thermocouple is burned under a prolonged action of fire, its tip becomes loose, physical properties are lost and an involuntary actuation of the protective function occurs. The defective part must be replaced.

Another reason for insufficient thermocouple heating is dust clogging of the gas nozzle opening. After completing the cleaning operation is restored.

When eliminating the problem of the extinction of the gas column igniter, you need to be focused and soberly assess your capabilities. In case of uncertainty in your abilities, it is better to contact a specialist

If the ventilation is improper, the resulting air flows can blow out the ignition burner. It is important here not to confuse this phenomenon with the lack of draft due to pollution of the chimney.To fix the problem, you need to check the correctness of the fastening of the protective cover of the column and the absence of external sources of air exposure.

It should be remembered that in modern devices there is a mass of electronic devices, sensors and modules. Separate malfunctioning of any of them can lead to failure of the device. Special equipment is needed that can detect a malfunction.

Geyser Fault Prevention

In addition to troubleshooting, you need to know how to properly disassemble the gas column. These skills are required to conduct DIY maintenance. Why you need to know not only the constituent elements, but also the sequence of actions when disassembling the column.

You can complete all gas column maintenance points without the help of a wizard. The main thing is to follow the sequence of actions and do everything quite accurately

Conducting periodic preventive maintenance throughout the entire operational life of a gas water heater will contribute to correct operation.

Annual cleaning is recommended in the technical documentation by the manufacturer. After all, it is precisely the lack of cleaning during prolonged use that can lead to all of the above problems.

Conclusions and useful video on the topic

This video shows how to clean the ignition tube correctly:

In order to understand the complete phased disassembly, just watch this video:

Gas Water Heaters Bosch widely used to solve an important household problem - lack of hot water. In order for these devices to operate uninterruptedly longer, it is necessary to carry out their maintenance. And the malfunctions arising during operation can be eliminated independently, it is enough to know the correct algorithm of actions.

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If Bosch does not ignite a flame in your gas water heater and you cannot find the cause, and you do not want to call a specialist, ask our experts and other visitors to the site for advice.