DIY fan coil repair

In detail: do-it-yourself fan coil repair from a real master for the site my.housecope.com.

Rubric: Miscellaneous - everything about everything
Date: 2012-11-17 10:55:30
The fan coil unit is designed to provide air recirculation, cool or heat air masses in rooms of any area and for any purpose. The fan coil unit includes a heat exchanger, ventilation unit, control unit and filter. Let's take a look at the general principle of operation of this equipment.

Thanks to the fan, which is located along the entire length of the block, the air entering it is evenly distributed. Its work is accompanied by a minimum noise level. The fans have two types of motors: centrifugal (for industrial premises of medium and large areas) and tangential, which are used for small premises. Thanks to the fan, forced air is supplied through the heat exchanger. Coils, which are copper tubes, are used to supply the heating medium to the heat exchanger. An aqueous solution of ethylene glycol or ordinary water can be used as a heat carrier.

Thanks to the couplings, the heat exchanger is connected to the central heating system, which allows it to be supplied with water. When the heat exchanger is filled with water, air is vented from the air valves. A separate branch pipe is used to drain the condensate. In some cases, in order to increase the efficiency of the fan coil in operating mode, an electric heater is used, which is located at the outlet of the unit.

The central air conditioner is used to supply fresh air to the chiller-fan coil system. Here, a chiller is a refrigeration machine designed to cool an anti-freeze liquid or water. The suction station pumps liquid from the chiller to the fan coil unit.

To provide ventilation in the room, a central air conditioner is installed near the chiller with a fan: it can be in the attic or on the roof. From the chiller, the cooling mass is directed to each fan coil unit used in the room and also to the heat exchanger. The central air conditioner is designed to supply cooled air that meets sanitary standards. Fan coil units are responsible for the temperature conditions in the room. They are supplied with air from the central air conditioner and the premises, which leads to a decrease in air consumption, and as a result, to a decrease in the cost of central air conditioning.

Video (click to play).

Fan coil units especially effective for use in multi-storey buildings with a significant number of rooms. Several fan coil units can be connected to one chiller, which will reduce the cost of installing an air conditioning system.

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Design - Eugene Ron Application - Saratovout

The chiller-fan coil system is a multi-zone climatic structure designed to create comfortable conditions inside a large building. It works constantly - in summer it supplies cold, and in winter with heat, warming up the air to a given temperature.

Its main elements are a cooler and a heat exchanger. Further on how this thermoregulation system is arranged and functions.

The role of the cooling device is assigned to the chiller - an external unit that produces and supplies cold through pipelines with water or ethylene glycol circulating through them. This is what distinguishes this system from other split systems, where freon is pumped as a coolant, for the transmission of which expensive copper pipes are needed. Here, water pipes with thermal insulation do an excellent job with this task.

Its operation is not affected by the outside air temperature, while split systems with freon lose their performance already at -10⁰. The indoor heat exchanger is a fan coil unit. It receives a liquid with a low temperature, then transfers the cold to the air in the room, and the heated liquid returns back to the chiller.

Fan coil units are installed in all rooms. Each of them works according to an individual program.

Typically, such systems are used in hypermarkets, shopping malls, underground structures, hotels. They are sometimes used for heating purposes. Then, along the second circuit, heated water is supplied to the fan coil units or the system is switched to the heating boiler.

According to the design of the chiller-fan coil system, there are 2-pipe and 4-pipe. By the type of installation, they are distinguished by wall-mounted, floor-standing, built-in devices. The system is evaluated according to the following main parameters:

the power or cooling capacity of the chiller;
fan coil performance;
the efficiency of moving the air mass;
the length of the highways.

The last parameter depends on the strength of the pumping unit and the quality of the pipe insulation.

The harmonious functioning of the system occurs by combining the chiller with one or more fan coil units by means of pipelines with thermal insulation. In the absence of the latter, the value of the efficiency of the system drops significantly.

Each fincoil has an individual piping unit, by means of which its performance is regulated both in the case of heat and cold generation. The refrigerant flow rate in a separate unit is regulated by means of special valves - shut-off and control valves.

If the mixing of the heat carrier with the refrigerant must not be allowed. the water is heated in a separate heat exchanger and the circuit is supplemented with a circulation pump. To ensure smooth regulation of the flow of the working fluid through the heat exchanger, a 3-way valve is used when installing the piping. If a two-pipe system is installed in a building, then both cooling and heating occurs due to the cooler - chiller.

To increase the efficiency of heating with fan coil units during the cold season, a boiler is included in the system in addition to the chiller. In contrast to a two-pipe system with one heat exchanger, two of these units are included in the four-pipe system. In this case, the fan coil unit can work both for heating ‚and for cold, using in the first case the liquid circulating in the heating system.

One of the heat exchangers is connected to the refrigerant pipeline, and the second to the heat carrier pipe. Each heat exchanger has an individual valve controlled by a special panel. If such a scheme is applied, the refrigerant never mixes with the heat carrier.

Since the temperature of the coolant in the system during the heating season ranges from 70 to 95⁰ and for most fan coil units it exceeds the permissible value, it is preliminarily reduced. Therefore, the hot water flowing from the central heating system to the fan coil units passes through a special heating point.

The conditional division of chillers into classes occurs depending on the type of refrigeration cycle. On this basis, all chillers can be conditionally classified into two classes - absorption and steam compressor.

An absorption chiller or ABHM for operation uses a binary solution with water and lithium bromide present in it - an absorber.The principle of operation is the absorption of heat by the refrigerant in the phase of converting vapor into a liquid state. Such units use the heat generated during the operation of industrial equipment. In this case, an absorbent absorber with a boiling point significantly higher than the corresponding parameter of the refrigerant ‚dissolves the latter well.

The operation diagram of a chiller of this class is as follows:

Heat from an external source is supplied to a generator, where it heats up a mixture of lithium bromide and water. When the working mixture boils, the refrigerant (water) completely evaporates.
The vapor is transferred to the condenser and becomes a liquid.
Liquid refrigerant enters the throttle. Here it cools down and the pressure drops.
The liquid enters the evaporator, where the water evaporates and its vapors are absorbed by the lithium bromide solution - the absorber. The air in the room is cooled.
The diluted absorbent is reheated in the generator and the cycle is restarted.

Such an air conditioning system has not yet become widespread, but it is completely in tune with modern trends in energy saving, therefore, it has good prospects.

Most refrigeration units operate on the basis of compression refrigeration. Cooling occurs due to continuous circulation, boiling at low temperatures, pressure and condensation of the refrigerant in a closed system. The chiller of this class includes:

compressor;
evaporator;
capacitor;
pipelines;
flow regulator.

The refrigerant circulates in a closed system. This process is controlled by a compressor, in which a gaseous substance with a low temperature (-5⁰) and a pressure of 7 atm is compressed when the temperature is brought to 80⁰. Dry saturated vapor in a compressed state goes into the condenser, where it is cooled to 45⁰ at a constant pressure and converted into liquid.

The next item on the way is the throttle (pressure reducing valve). At this stage, the pressure decreases from the value of the corresponding condensation to the limit at which evaporation occurs. At the same time, the temperature drops to approximately 0⁰. The liquid partially evaporates and moist vapor forms.

Having entered the heat exchanger - the evaporator ‚the working substance‚ a mixture of vapor and liquid ‚gives cold to the coolant and takes heat from the refrigerant‚ drying out at the same time. The process takes place at constant pressure and temperature. The pumps deliver low temperature liquid to the fan coil units. Having passed this way, the refrigerant returns to the compressor in order to repeat the entire vapor compression cycle again.

In cold weather, the chiller can operate in natural cooling mode - this is called freecooling. In this case, the coolant cools the outside air. In theory, free cooling can be used at ambient temperatures below 7 ° C. In practice, the optimum temperature for this is 0⁰.

When set to heat pump mode, the chiller operates for heating. The cycle is undergoing changes, in particular, the condenser and the evaporator exchange their functions. In this case, the coolant must be subjected not to cooling, but to heating.

This mode is most often used in large offices ‚public buildings‚ in warehouses. The chiller is a refrigeration unit that gives 3 times more cold than it consumes. Its efficiency as a heater is even higher - it consumes 4 times less electricity than it generates heat.

A refrigerant is a working substance that during the refrigeration cycle can be in different states of aggregation at different pressures. The coolant does not change phase states. Its function is to transfer cold or heat over a certain distance.

The refrigerant is transported by the compressor, and the coolant is transported by the pump.The refrigerant temperature can fall below the boiling point or rise beyond it. The heat carrier, unlike the refrigerant, constantly operates at temperatures that do not rise above the boiling point at the current pressure.

A fan coil unit is an important element of a centralized climate control system. The second name is a fan coil. If the term fan-coil is literally translated from English, then it sounds like a fan-heat exchanger, which most accurately conveys the principle of its operation.

The purpose of the device is to accept low temperature media. The list of its functions also includes both recirculation and cooling of air in the room where it is installed, without the intake of air from the outside. The main elements of the fan-coil are located in its body. These include:

centrifugal or cross-flow fan;
a heat exchanger in the form of a coil, consisting of a copper tube and aluminum fins, mounted on it;
dust filter;
Control block.

In addition to the main units and parts, the design of the fan coil unit includes a sump for collecting condensate, a pump for pumping out the latter, an electric motor, through which the air dampers are turned.

Depending on the installation method, there are ceiling ‚duct‚ fan coil units mounted in ducts through which air is supplied ‚open frame, where all elements are mounted on a frame‚ wall or console.

Ceiling devices are the most popular and have 2 versions: cassette and duct. The first ones are mounted in large rooms with false ceilings. A body is placed behind the suspended structure. The bottom panel remains visible. They can disperse air currents on two or all four sides.

The need for cooling does not always exist, therefore, as can be seen in the diagram, transmitting the principle of operation of the chiller-fincoil system, a tank is built into the hydraulic module, which acts as a battery for the refrigerant. The thermal expansion of the water is compensated for by an expansion vessel connected to the supply line.

Fan coil units are controlled in both manual and automatic modes. If the fan coil operates for heating, then the cold water supply is cut off in manual mode. When operating it for cooling, hot water is blocked and a path is opened for the flow of the cooling working fluid.

To work in automatic mode, the temperature on the panel is set to the temperature required for a particular room. The set parameter is maintained by means of thermostats, which adjust the circulation of heat carriers - cold and hot.

Since any large building has zones with different temperature requirements, each of them must be served by a separate fan coil or a group of them with identical settings. The number of units is determined at the design stage of the system by calculation. The cost of individual units of the chiller-fan coil system is quite high, therefore, both the calculation and the design of the system must be carried out as accurately as possible.

Everything about the device ‚work and the principle of operation of the thermoregulation system in this material:

How to install and commission the chiller:

Today, the most effective is the air conditioning of premises using chiller and fan coil systems. They use antifreeze or water as a refrigerant. In chillers, the liquid is prepared and supplied to fan coil units, which cool the indoor air.

Working modules, like other equipment, are subject to regular maintenance, the frequency is regulated by the manufacturer. But if the indoor units:

give off an unpleasant smell or smell of burning;
water drips from the dispenser at normal humidity;
the module does not turn on;
extraneous sounds are heard;
the system has lost its effectiveness;

fan coil units need repair. It is possible to carry out the restoration work of air conditioners with your own hands in some cases, but it is better to use the professional services of the masters of a specialized company. They will qualitatively repair the equipment and accompany the service with guarantees.

Modules of such brands as General Climate, Ballu, MDV, Trane, Royal Clima, Daikin and McQuay are mainly used in Russia. Their device is similar, therefore, the repair of fan coil units involves identical operations. The simpler ones can be done by hand, but you will need a specialized tool and high-quality spare parts. Service must begin with visual inspection and diagnostics of air conditioners. According to the results, a defect identification and estimate are drawn up. The most common problems you need to troubleshoot are:

leakage of working fluid;
installation of new filters;
failure of the electric motor;
fan coil contamination;
heat exchanger malfunctions;
replacement of the 3-way valve;
regulation of the water circuit.

The causes of malfunctions are violations of the operating rules, improper installation of the system or its individual parts, the use of parts that have exhausted their resource.

A healthy microclimate at home is not only freshness and pleasant aroma, but also the health of its inhabitants. That is why it is so important to take care of the cleanliness and comfort of the air in an apartment or house.

Among the many systems designed for air conditioning, one can single out a chiller-fan coil unit. We will talk about it in our article.

The chiller-fan coil system is designed for air conditioning. Consists of two parts:

Chiller - cooling or heating device.
Fan coil unit - a unit that serves both for cooling and heating the air, an air conditioner.

In addition to the above devices includes:

Hydro module (pump or pumping station). Designed for transporting the heat carrier.
Automatic control device and management.
Connecting elements (pipes connecting the units to each other).
Heat carrier... This is ordinary water or a special solution such as ethylene glycol. Water is used when installing the system in areas with hot climates, such as tropical. The solutions are used in places where the climate is temperate or cold. For example, Siberia and the central regions of Russia.
Refrigerant... Most often, gas.
Storage tank.
Expansion tank.

A chiller-fan coil unit differs from similar systems in that it:

This device receives air from the room, which is mixed with the help of a fan with the air inside the unit, already heated or cooled.

After this operation, the air mixture is released into the external environment. This is how the premises are air-conditioned using a chiller-fan coil.

The chiller heat exchanger is connected to the pump and storage tank. The expansion tank is also displayed on the pump. Through the pipeline, through a system of control valves, the coolant is supplied to the fan coil units.

Read about the benefits and dangers of humidifiers in private homes.

The main feature of the system is that a chiller-fan coil project is developed individually for each building. For example, the design of one building does not allow the chiller to be placed anywhere other than on the roof. And the other is built in such a way that the main device of the system can only be located in the attic.

In addition, the development takes into account the requirements for the microclimate created in the premises, their purpose, the infrastructure around the building.

The devices that make up the chiller-fan coil system can work both independently and in a single complex. The types and varieties of the system depend on which chiller or fan coil unit is installed. Therefore, we will consider their types separately.

Reversible... That is, a device that can both heat and cool the coolant.
Vapor compression. In this unit, the refrigerant circulates inside the unit and removes heat to a special chiller ..
Absorption. This device uses high pressure. As a result, the vapor or liquid changes its state, releasing heat or taking it away. With the help of an absorbent, for example, heat is transferred to the consumer.
Air cooled.
With an extension contour cooling.

They can be installed on the ceiling, on walls, on the floor.

Read on to find out which humidifier is good for your baby.

The choice of a device is made according to the following parameters:

Chiller capacity.
Fan coil performance.
Moving air masses.
Pumping station capacity, pipe length, pipe thermal insulation.

Above, we have already talked about the advantages of the system itself. We especially note once again that it is not difficult to mount it.

Basically, devices of this type are used in:

In office premises.
Hospitals.
Supermarkets and other retail outlets.
Hotel complexes.

The price of the product depends on the cost of the components, that is, the chiller and the fan coil unit.

For example, let's give the cost of two products.

Fan coil unit TRUST- 12678 rubles.

Homo series– 15609.

The fixtures are randomly selected. At the same time, the first unit also has higher productivity and it serves a large area of the premises, but the price for it is lower than that of the second.

Hence the conclusion: the main factor that determines the price of the unit is the manufacturer.

Users note that the main advantage is the absence of restrictions on the length of the pipe line and the absence of external external blocks. The disadvantages include the complexity and high cost of devices that use gas as a refrigerant, such as freon. Such units are noisy and have low energy efficiency.

In conclusion, it should be noted that it is quite difficult to design a chiller-fan coil unit. Besides the installation of some devices has its own subtleties that may not be known to a layman. Therefore, the most reliable way to install a fan coil chiller is to rely on specialists.The advantage of fan coil units is manifested in large areas - in office centers, retail premises. The system allows heating or cooling the air depending on the season. If a fan coil unit operates all year round, sooner or later breakdowns occur associated with the key components of the system: a heat exchanger, a fan or a cleaning filter. In this case, the system stops functioning.In order for the fan coil to work correctly, you need to regularly carry out routine maintenance work, cleaning filters and air ducts, and replacing parts. This is done by specialized licensed firms. You can independently carry out maintenance of fan coil units if you have experience in such work. Image - DIY fan coil repair

Fan coil units work like a conventional wall-mounted air conditioner. A distinctive feature is a liquid that acts as a refrigerant: in split systems it is freon, in a fan coil unit - water or antifreeze. From the room where the fan coil is located, air is directed to the heat exchanger. Cooling or heating takes place there. The pressure in the system ensures a constant supply of fresh air from the street.

A chiller is a refrigeration unit to which a fan coil is connected. It is also connected to a boiler or boiler.

In air conditioning mode, condensing liquid accumulates on the heat exchanger, which can interfere with the normal operation of the entire system and even damage it.

Fan coil units are distinguished by types:

built-in and free-standing floor-standing;
vertically arranged and horizontal;
in the case and frameless;
two or four-pipe.

Each design requires a professional approach and adherence to service rules.

Repair of fan coil units is necessary in case of the following problems:

Dirty filters, preventing the system from operating at full capacity. Cleaning fan coil units and air conditioner shafts is a mandatory activity that takes place twice a year before the heating and cooling season. The first sign is an unpleasant odor, when it appears, the wizards are called to diagnose the system. The malfunction does not require dismantling, the work is carried out on site.
Wear of parts. Constant intensive work leads to premature equipment failure. Defective air conditioner parts break faster. Depending on the location of the faulty structure, problems are eliminated on site or at a service.
High humidity and mold. The first sign is that condensation begins to accumulate inside the room, the windows fog up. Cleaning and disinfection of the ventilation shaft is required. Fluid leaks can cause similar fan coil malfunctions. The dirt that accumulates in the heat exchanger is a breeding ground for microorganisms.
Increased vibration, extraneous sounds during work.
No cooling or heating while the system is running.

In order not to bring the equipment to obvious errors, it is necessary to inspect for potential problems long before they appear.

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Recovery measures are carried out in case of serious equipment breakdowns.

Actions depending on the breakdown:

Switch defective: find cause or replace.
Fuse blown: replace.
Refrigerant leaks: locate the leak, seal and top up.
There is a lot of fluid in the system: measure the pressure and remove the excess.
Gas appears in the fan coil unit: release and restart the system.
Air inlet obstructions: inspect fan for dirt.
The compressor is overheating. If there are problems with the bearings, it must be replaced. Other reasons: frequent activation, insufficient lubricant.
Electrical problems - high or too low voltage: fix.

The device must be inspected by several specialists. Do-it-yourself fan coil maintenance can lead to complete failure of expensive equipment due to incompetent interference in the repair process.

Incorrect installation and selection of the location of the chiller leads to frequent repairs and unnecessary maintenance costs.

The chiller is a unit weighing from 400 to 5000 kg, depending on the capacity, so the team is forced to carry out maintenance on site. The price in this case is much lower, because dismantling and transportation are more expensive than the repair itself.

Repair technical work in case of fan breakdown:

replacement;
cleaning the impeller;
centering, if the wings cling to adjacent parts;
repair of the electrical component of the fan.

The prices for the repair of the fan are determined by the degree of breakdown and the need for transportation to the service.

Cassette fan coil units require periodic replacement of curtains and electric drives, adjusting the direction of the air flow. Contamination on the cassette is eliminated twice a year to ensure free passage of air to the heat exchanger.

It will be more expensive to repair a ducted fan coil unit, since the system is hidden behind a false ceiling. The work requires the dismantling of the ceiling structure to provide access to the units located in the room.The process takes more time and requires additional tools, as well as restoring the integrity of the ceiling after inspection or repair.

The list of mandatory technical work includes:

visual inspection for mechanical defects and damage to units;
checking all operating modes of the remote control;
cleaning filters and heat exchanger, as well as fan impellers and curtains;
measurement of the air temperature at the inlet and outlet of the fan coil;
measurements of fluid pressure in the system;
drainage system check;
measurements of currents in the engine;
inspection of wiring for wear.

After carrying out preventive measures, specialists draw up an act in two copies, one remains with the contractor, the other with the customer of the services.

It is not recommended to entrust the maintenance of expensive systems to incompetent persons. Qualified teams of workers will quickly fix problems. In case of repeated failures, you can ask for help on the basis of a completed work completion certificate.

Man has always strived to create comfortable and favorable conditions around him. For example, wealthy Persians even BC in their homes dug a blown pit, the depth of which reached underground waters, from which cool air entered the room, cooling it. And savvy Hindus even invented the so-called self-cooling bio door, made the door frame from a tatti palm tree, on top there was a container, into which water slowly flowed due to the capillary effect of the palm tree. When the container was collected, it overturned, and this continued as long as the plant was alive.

And only at the beginning of the 20th century AD, the world saw air conditioning systems similar to modern ones, and in the 1930s their production and consumption became massive and affordable. As a result, a Fancoil was invented by trial and error, which is capable of both heating a room in the cold season and cooling rooms in summer.

Fan coil or Fan coil or Fan closer it is all the name of one device that is capable of heating and / or cooling a room (depending on the type and type).

The principle of operation is such that a warm or cold liquid is supplied to the pipe system (radiator, also called a heat exchanger) through the circuit, it can be water or any other specially adapted technical liquid. The fan, blowing over the radiator, transfers the temperature of the liquid supplied by the circuit throughout the room.

The device and the number of fan coil components are quite modest, with good performance indicators.
For the production of a Fancoil with your own hands you need:

fan;
power supply controller with timer;
several old boxes;
pan.

We have spare parts, let's get to work. First, we will prepare the fan, remove all decorative elements from it, leaving only the rotating mechanism itself with the shell.

Then we prepare a box, you can take an old one from under your shoes, a microwave oven, or from under a fan you just bought. The choice should fall on the box based on the distance between the floor and the battery in the place where the homemade Fan Coil is installed. We make two holes in the box, a fan will be attached in one and a cord with a power plug will come out, on the other side, cut a hole through which the wind generated from the fan will blow the battery.

When mounting, fixing and installing the fan in the box, take into account the fact that the motor itself from the mechanism must be outside the box to prevent overheating. It is also advisable to install the motor as low as possible from the battery, but so that it does not touch any surfaces, including the floor.

We do not connect the power cord with a plug directly to the outlet, as this will lead to endless operation of the fan and its quick failure.To save ourselves from this trouble, we have prepared a power controller with a timer, which will independently turn on and off the fan at a time set by the owner.

A homemade fan coil unit of this type will increase the temperature in the room by several degrees. With such a low cost and a feeling of discomfort with a low degree index in the room, you can easily sacrifice the aesthetic appearance of the room on the coldest days. And the mobility of this design makes it easy to get and hide the device as needed.

The installation and installation of a fan coil can be carried out either independently or by resorting to the installation services market. Fan coil installation depends on the type and type of device.Let's analyze all the existing options:We will analyze the case version below. It is technically difficult to install without the case version. It requires a well-prepared and well-thought-out place in which the device itself will be placed, communications and a convenient and practical place for the output and distribution of the produced air will be provided. It is also worth considering the interaction factor for the control and maintenance of the fan coil unit. Image - DIY fan coil repair

If you are counting on one-sided operation of the device, then one source with warm or cold liquid is supplied. If you want to get two-way work, two circuits are brought in, cold and hot. Instead of a separate hot circuit, the system is often connected to a central hot water supply.

A two-pipe circuit is a classic version, air is drawn in through one pipe, heated or cooled comes out into the other, both pipes must go into the same room.
The four-pipe has flexible and varied installation patterns. Option one, this is the output of all pipes into one room, for quick switching between warm and cold air streams. The second option, the output of paired pipes to different rooms, if necessary, cool one room, and heat the other at the same time, using one fan coil.

The wall-mounted one clings to the wall, in a place with supplied electricity and fluid circuits. All problems during the installation of such a device are only in choosing the correct installation site for good air circulation. The disadvantage is its cumbersomeness and often does not fit into the overall picture of the interior.
Outdoor, this is the most frequent choice among consumers. Fits well into the interior and is not bulky. Often it is installed instead of a battery, since the hot water circuit has already been connected in that place, and the circuit connection is a big piece of work that takes a lot of time.

The name of this species comes from the name of the path (channel) that the air passes through before entering the room. This type of device is often installed in large houses or business centers, its convenience is that one device works for all rooms in the house, which are ventilated. The closer itself is installed in a utility room or garage, from it there is a system of pipes (ventilation) throughout the room, heated or cooled air flows through the grilles brought out from the pipes in the rooms. Installation features are the correct distribution of air pipes according to the power and capabilities of the device. Also, upon purchase, pay attention to the possibility of this device in remote control using a remote control, wall controller or mobile application.

Despite the simplicity of the device, the repair and maintenance of the Fan-coil is still necessary, like any other equipment.The most common faults:

Increased noise and vibration from the fan.

Deformation of the fan blades.

Violation of insulation and melting of power circuits.

Clogged radiator (sand and other small particles)

Depressurization of the system.It is dangerous not only because it will ruin the floor covering, but also by the threat of fire if water gets on the electrically dependent parts of the device.

Repair work in violation of insulation and melting of power circuits can be done independently, even at school we studied the general principles of working with electrical wires. In case of other breakdowns, it is better to consult a specialist. There are many repair and maintenance companies on the market now. A lot of competition between them creates a favorable price indicator for consumers. In order to avoid breakdowns, experts recommend carrying out a preventive service every 3 months, and a full-fledged full diagnosis once a year.

A prerequisite for using the device is its regular wiping from dust and dirt. Due to changes in temperature and humidity, fungi can form on it, which have a negative impact on health and the potential for contamination.

Choose the right, suitable and cost effective temperature controller for your home and live comfortably.

Video (click to play).