The easiest and cheapest way to organize hot water supply is a double-circuit boiler, which simultaneously provides room heating and water heating. Popular designs are products under the brand name "Ariston", Baksi ". These models attract buyers and are included in the TOP sales. Despite the simplicity of the mechanism and a large number of advantages, such equipment often fails. The boiler does not heat water for many reasons. Sometimes a little maintenance is enough to restore the device to work, and in some cases, expensive overhaul is required.
Heating boilers malfunctions
Common boiler breakdowns include:
- coolant leakage;
- water hammer;
- after turning on the burner, the blocking is activated;
- the burner does not turn on;
- fuel burns unevenly, in waves;
- soot is formed;
- decreased productivity;
- during the operation of the burner, the ignition is switched on;
- soot is formed on the walls of the chimney, combustion chamber.
To eliminate the problem that has arisen, it is first necessary to establish the cause of the problem.
Internal pump malfunction
An important part in the heating system is the circulation pump. The quality of heating and the functioning of hot water supply depend on its uninterrupted operation. There are several signs and causes of breakdowns:
- The unit emits uncharacteristic sounds. This is due to oxidation of the shaft, ingress of a foreign object into the structure, in case of problems with the power supply, air in the pipes, dry running of the mechanism, the appearance of cavitation.
- After turning on the boiler, the pump does not start. There may be no electricity supply, a fuse has blown.
- After a short period of time after switching on, the structure turns off: limescale in the stator glass.
- Hot water does not turn on in a double-circuit boiler.
Also, the reasons for the poor operation of the circulation pump are poor pressure in the system, bearing wear, which causes additional vibrations in the line, and low head.
To troubleshoot, you need to check the presence of electricity, clean the pipes and other elements, replace the failed parts, remove foreign objects from the system.
Clogged heat exchanger
The heated gases are transported through channels, which are collectively called a heat exchanger. The design features are that the walls of the artery simultaneously function as partitions of the water circuit, along which the coolant constantly moves, heating the metal surface. The combustion process is associated with the intense release of flue gases, partially consisting of soot, tar, which creates a deposit inside the boiler, on the chimney. Therefore, the manufacturer recommends regularly cleaning the equipment at least once every 30 days and during the preparation of the device for the heating season.
When soot settles on surfaces, the performance of the mechanism decreases, fuel consumption increases, and the risk of costly breakdowns and internal fires in the contaminated area increases.
Three-way valve does not work
The part, depending on the model, plays the role of a flow divider, switch, mixer. Loss of device performance often leads to overheating, incorrect coolant temperature.
The reasons:
- violation of the integrity of the electric drive;
- wear of the flow distribution mechanism;
- malfunction of the electromagnetic coil;
- the presence of condensation;
- power surge;
- wandering currents;
- ingress of a foreign body.
To diagnose and fix the problem, it is recommended to call gas workers with the appropriate qualifications. You can independently blow through, release the formed airlock. During the repair process, worn seals, non-working elements or the entire valve are replaced.
Heating circuit problems
Often the reasons for the failure in the functionality of the backbone are malfunctions in the health of the wiring:
- clogged return filter;
- incorrect installation of the heating circuit;
- insufficient pump power.
It is recommended to eliminate all of the above problems during the preparation for the heating season, otherwise you will have to stop the operation of the unit and completely drain the coolant.
To eliminate clogging, the filter is cleaned, the circuit is flushed, the coolant is completely changed to a new one.
Lack of power is formed against the background of the presence of branches located far from the pump or with insufficient performance of the device. As a result, equipment overheats, energy consumption increases, batteries do not heat up to the required temperature indicators or remain cold. In this case, there is only one way out - replacing the pump with a more powerful analogue.
In case of errors during the installation process - incorrectly selected highway slope - it is recommended to redo the wiring, entrusting this matter to professionals.
Reasons for poor water heating
Gas boilers do not heat water for several reasons:
- blockage of heat exchange pipes;
- pump malfunction: rotor jamming, airlock;
- problems with the flow sensor;
- breakage of the three-way valve;
- insufficient pressure level.
To eliminate the malfunction, it is necessary to find the cause and carry out a number of works corresponding to the problem:
- flush the system through the use of specialized compounds and install a filter at the inlet of the coolant to the boiler;
- remove all foreign particles that interfere with the functionality of the rotor or the water flow sensor;
- clean the existing filter elements from contamination;
- clean the three-way valve and check the gas hose.
If the Baksi boiler does not heat hot water due to low pressure, it is recommended to check the pressure level, fittings and valves. If there are no leaks or other technical troubles, the coolant must be added to the expansion tank.
Prevention and cleaning methods
Many gas boilers do not heat water because preventive measures have not been previously taken. Heating equipment requires timely maintenance:
- cleaning;
- replacement of components and worn out parts, gaskets, seals;
- gas regulation;
- pressure control.
It is also important to monitor the correct coolant level in the expansion vessel.
If the Baksi boiler does not heat the water due to contamination of the OS elements, it is necessary to clean it. There are several ways:
- Mechanical.It is produced with a thickness of scale from 1 mm to 3 mm using equipment from a flexible shaft, with a drive and cutters.
- Hydrodynamic. It occurs by flushing the pipes with high pressure water.
- Chemical. For the event, specialized equipment and a composition of aggressive action on the surface are used.
- Electric discharge. The method allows you to remove high-strength impurities. A working cable with a certain power / frequency of an electric discharge is transported along a line filled with water.
The cleaning method is selected taking into account the type of boiler, the nature of the dirt and the thickness of the scale.
