Heat curtain DIY repair

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

Large and long air curtains with large fans break more often. The fan cylinder often fails due to overheating. This is one of the most common breakdowns. Temperature control will help to avoid such a breakdown. Do not set the regulators to their maximum for long run times. If you had to use such a mode, then after a while it is necessary to transfer the heat curtain to a moderate mode of operation.

It is also impossible to hang the curtain incorrectly. The heat curtain intended for horizontal installation should be placed horizontally, and vertical - vertically.

Also, when replacing parts, boards, microcircuits, sensors, etc., you should install only original spare parts, since only they can give you a guarantee of long-term operation.

The best thing you can do in this case is to carefully study the operating instructions, and do everything that is prescribed by it, and what is listed in this answer, as well as contact the service that carried out the installation and commissioning in a timely manner.

For information on how to clean the heat curtain, see the attached video clip.

Thermal curtains are electrical devices used to protect heated rooms and structures from the ingress of cold air into them. Cold air most often enters through window or doorways, gates or sliding doors in supermarkets. Air curtains are widely used in shopping malls, restaurants, offices, warehouses and other facilities.

Video (click to play).

Due to widespread use, a large number of air curtains break down periodically. Therefore, it is required to regularly carry out preventive maintenance and repair of heat curtains. Since this process is a certain complexity, the services of an electrician come to the fore.

Air curtains have a fairly simple operating principle. The high power fan located inside the appliance creates a strong air flow. It is this flow that prevents the penetration of cold air into the room.

Most often, it is the fans or heating elements that fail. This is due to the fact that a large number of low quality devices enter the modern market. And often the question arises, which is better: to purchase new devices or to repair existing heat curtains? An electrician's consulting services will help you make the right decision, which is the most cost-effective from an economic point of view.

According to statistics, the most often fail are thermal curtains with a total length of more than 80 centimeters. This type of device is usually placed in wide doorways and is structurally different from shorter curtains. In long ones, a fan of a more complex design is used, due to which, in the future, more frequent breakdowns are possible.

Incorrect installation may be the cause of damage. In this case, you have to repair the device itself, as well as re-install it. In this case, you will need not only the services of an electrician, but also the help of installation specialists. To avoid another breakdown, all work should be entrusted to qualified professional specialists.

One of the reasons for the breakdown of the thermal curtain may be an increased temperature regime.In such a situation, structural elements such as fan turbines, electronic boards, switches and others are usually damaged. The use of original spare parts plays an important role in the repair of devices in such situations. Their use allows you to practically restore a damaged device.

Many public enterprises, trading companies, shops and offices with a high traffic of people per day prefer to install a thermal curtain over the entrance to the premises. The principle of operation of this climatic technology is based on the supply of a stream of hot air, which becomes an obstacle in the path of cold air. In our cold climate, air curtains have been in operation for more than six months, so it is not surprising that the device often breaks down and stops performing its function.

Diagram of an electric thermal curtain.

Most often, parts fail that are easy to replace, so repairing a heat curtain will cost much less than buying new equipment.

Only a qualified specialist can assess the scale of the breakdown and the possibility of repair. An experienced craftsman will be able to replace the failed part and reconnect the equipment to the network.

Heating curtain installation diagram.

One of the most common reasons for the breakdown of climatic equipment is overheating of the device. Most often, the owners of the equipment do not follow the recommendations set forth in the instructions and turn on the device at full power, allowing it to overheat. In the event of a breakdown, the following most often suffer:

The climate system can stop working even after improper installation. According to the service centers, the repair of heat curtains, the length of which is more than 80 cm, is more often carried out. This is due to the fact that these devices require the installation of a more complex internal filling, which breaks when overheated.

Repair of equipment is carried out by specialists of service centers who visit the site to assess the breakdown and the possibility of its elimination. Specialists can fix most minor faults on site; such work does not require much time. If you decide to fix the malfunction yourself, then you need to study the instructions in detail, find out which part needs to be replaced and whether it is possible to purchase it. Before carrying out repair work, it is necessary to completely disconnect the device from the mains, remove it. All work is carried out in compliance with safety regulations.

The main faults that you can fix yourself:

The curtain does not work when connected to the electrical network. It is necessary to check the presence of electricity, the fuse of the device and the contacts. If the fuse and contacts fail, you can replace them yourself, following the attached instructions.
The switch of the device is in the “Heating” position, but does not perform this function. A possible cause is a failure of the switch or poor contact in the electrical circuit. The switch can be replaced by yourself, the contact is restored by checking the correct connection.
During operation, the device may periodically turn off and on. It is necessary to check the correctness of the installation of the device, to clean the inside of the accumulated dust.

The heat curtain will work properly only if you follow all the recommendations for its installation, periodic cleaning and maintenance.

If the fan heater does not turn on when connected to the mains and pressing the button, there may be several reasons for the malfunction. The first thing to do is to check the electrical cord, it may have been interrupted somewhere during summer storage. Did not help? We take a screwdriver and a multimeter, after which we proceed to self-repair the fan heater. The most likely cause of the malfunction is the fuse box, one of which has tripped due to overheating.

Read also: DIY aquarium repair

Using the Scarlett household heater as an example SC158 we will consider in the form of step-by-step instructions how to fix a fan heater with our own hands:

First, unscrew the screws on the back cover, there are usually 6 of them, as shown in the photo.
Next, we ring the main elements of the circuit with a multimeter: thermal fuses, a thermostat, a thermal switch. The first fuse can be seen immediately without removing the blades. To find the second one, which is on the engine, you will have to remove the fan. You call the circuit with a multimeter on your own and if the reason is really this type of breakdown, you buy exactly the same element in the store and replace it (the cost is not more than 30 rubles).

We draw your attention to the fact that it is strictly forbidden to replace the fuses with thin wires (bugs). With this method of repairing a fan heater with your own hands, you will make a fire hazardous heater that will not work when overheated!

Repair instruction video:

The second popular failure of a fan heater is blowing, but not heating the air. In this case, the cause of the malfunction is most likely a heating element - a spiral or a ceramic heating element. Everything is simple here - you check the resistance in the circuit with a multimeter and if an open circuit occurs somewhere, you need to replace the heating element with a new one. Sometimes it happens that the heater stops heating because one of the sections of the spiral is damaged. In this case, you can try to repair the fan heater yourself by connecting the nichrome spiral.

It is also not a rare case when the same fuse is the cause of a breakdown. If the fan heater does not heat up, check the fuses using the technology provided above.

In addition, the bimetallic thermostat often fails (shown in the photo with a red arrow). For repair, you just need to clean its contacts yourself to a metallic color and warm it up yourself with a soldering iron. The thermostat should behave as follows: when heated, the contacts must open the circuit, when cooled down, close again. If the device does not work, try to manually close the temperature controller and connect the heater to the mains. If it is a worker, the spiral should be heated.

If the fan heater works, but the fan does not turn, the most likely cause of the malfunction is the motor stopped working. What to do in this case? Ring the part with a multimeter and check its insides. Perhaps the bearings are simply worn out and need to be replaced. We talked about how to use a multimeter in the corresponding article!

Another breakdown option is heavy dust pollution, as a result of which the fan does not spin or often turns off. Try to repair the motor yourself by wiping it with a rag and dripping a little machine oil between the moving and stationary parts. Did not help? We replace the broken electric motor with a new one with the same characteristics.

Well, and the last malfunction - the fan heater does not heat the air well. In this case, the cause of the breakdown is contamination of the spare parts. Most likely, the heating element is covered in dust, as a result of which heating occurs weakly, for example, at the second speed, as at the first. For such an easy repair, turn off the power and use a dry rag or vacuum cleaner to walk over all the elements of the circuit, the main thing is not to damage anything. Did you do it, but it doesn't help? Check the electrical plug, it may be at fault. Turn on the heater for a few minutes, then remove the plug from the socket and feel the electrodes. If one of them is noticeably warmer than the second, the electrical plug is broken, as a result of which the household heater produces little heat.

That's all the tips for repairing a fan heater with your own hands! When choosing a heater on your own, we recommend giving preference to models with a ceramic heating element, rather than a spiral.You can read more tips on choosing fan heaters for your home in the corresponding article!

Related materials:

List of typical malfunctions of air curtains and fan heaters.

Consumer declared malfunction

Most likely cause of failure

Repair manual section

Most likely reasons for refusal

2. The control panel of one or several curtains (fan heaters) is faulty.

3. The control cable from the thermostat to the product itself is faulty.

4. Defective control unit (assembly unit inside the product).

1.Failure of the IR-01R thermostat or

2. Failures of PKU and BKU for curtains (fan heaters).

3. Mechanical damage.

Non-contact in the terminals in the product or in the thermostat.

4. Failure of contactors, heating elements resistors, defects in electrical connections

1. Replacement with a known good one.

When the product is turned on, automatic protection is triggered on the consumer's switchboard.

1.Short circuit or current leakage to the case from heaters, accessories or connecting cables and wiring wires.

2. Defective or incorrectly selected by the Consumer automatic protection.

1. Breakdown of insulation to the case:

- Connecting wire or cable.

1.Checking with a tester and megohmmeter.

2. Use the recommendations from

2. The control panel of one or several curtains (fan heaters) is faulty.

3. Defective purge sensor.

4. Defective control unit.

1.Failure of the IR-01R thermostat or

2. Failures of PKU and BKU for curtains (fan heaters).

4. Failure of contactors (sticking).

1. Replacement with a known good one.

3. Replacement with a known good one.

1. Overheating protection has tripped.

2. Open circuit of the overheating protection sensor.

4. Faulty thermostat or thermostat.

5. The contactors for switching on the heaters are faulty.

7. Defective heating power circuits.

1.The curtain was turned off without blowing

2. Breakage (non-contact) in the wires connected to the sensor.

4. Failure of the thermostat or thermostat.

(non-contact, mechanical damage, pollution)

5.Failure of contactors (open or

coil burnout, burnout

6. Burnout of the coil of the tubular electric heater.

7.Power wire burnout

at the connection points due to poor contact.

3.Replacing the overheating sensor

1. One of the contactors for turning on the heaters is faulty.

2. One of the heaters is faulty.

3. Faulty thermostat or thermostat.

1. Failure of contactors (open or

coil burnout, burnout

2. Burnout of the coil of the tubular electric heater.

3. Failure of the thermostat or thermostat.

(non-contact, mechanical damage, pollution)

1. Defective purge sensor.

2. Breakage (non-contact) in the wires connected to the sensor.

3. The temperature of the sensor does not exceed 50 degrees. WITH.

1. Replacement with a known good one.

1. The motor is jammed, all windings are burnt out (smell of burnt insulation)

2. The impeller is jammed.

4. Breakage of the motor winding.

2. Grazing on the housing, the radial wheel bearing is jammed.

3. Failure of the capacitor A.2.3.7., A.2.3.1.1.

4. Motor failure, non-contact at the point of connection of the windings P.2.3.1.1.

5. Breakage (non-contact) in the wires connected to the engine.

No motor power output with

control devices (switch, control panel, contactor, etc.)

During the operation of the product, malfunctions can occur, most of which have typical causes. Below is a list of these causes and recommendations for their elimination. It is important to remember the safety precautions when attempting to correct the problem you are experiencing.

If the curtain does not turn on:
• Should check, is there voltage in the network, in phases.
• Check continuity of the cable and repair breaks if they are found.
• Check according to the instructions, whether the distance from the remote control to the infrared sensor is correct. If exceeded, place the remote control in the desired range and at the desired angle.
• Check batteries inside the remote control, replace them if necessary.
• Check IR03 control panel for serviceability, referring to its instructions.

If the air comes from the curtain, but is not warm, then the emergency thermal switch has been triggered. This could be due to a number of reasons:
• Contaminated, or the curtain windows are obstructed, which prevents normal air circulation.
• Has broken fan.
• The veil was turned off not according to the rules, bypassing the purge mode.
• Set too high temperature for the existing area of the room.

It is necessary to turn off the product from the network, wait until it has completely cooled down, eliminate the detected causes, and return the emergency thermal switch to the ready state. More details on how to do this are described in the instructions.

If the control panel fails to turn off the curtain, it means that the starter is jammed. It is necessary to turn it off through the circuit breaker and replace the starter.
If the curtain works, but does not inflate the set temperature:
• The wind strength and temperature have noticeably changed, it may be worth temporarily closing the opening mechanically.
• Too large flow of people. Open another opening with a curtain, or temporarily install a fan heater.
• Supply and exhaust mechanical ventilation is unbalanced. Indoor pressure is lower than outside. Check the pressure in the room, increase the ventilation flow.

The video shows how the dust burns on the "Tropic" thermal curtain

A thermal curtain is a climatic equipment, which is a type of room heating. The device, design, characteristics of such devices are different, but all devices have a single principle of operation. The process of connecting and choosing a heating curtain requires special attention, since safe and efficient operation depends on it.To regulate the microclimate, a device such as a heat curtain is often used. This equipment is a powerful fan heater, which is housed in a metal case, often of rectangular elongated shape.The thermal curtain is installed above the front door and does not spoil the interiorThe equipment design contains the following elements:

air duct through which warm air masses are carried;

heating elements in electric models - ten, and in water - pipes;

radial fans or turbine have parameters that depend on the length of the heat curtain;

filters clean the air coming from outside from dust and debris;

the body has perforated walls for the intake and output of air streams;

control buttons are located on the side panel of the device.

The device is easily wall-mounted and provides warm air flowThe thermal curtain is designed to regulate the microclimate and distribute temperature zones in different rooms. Often the equipment is installed above the entrance from the inside of the room, which protects the space from cold currents and ensures a comfortable temperature. This solution is optimal for a private house, shop, shopping centers and any other buildings where the front door is often opened and cold air enters through it. At the same time, safety requirements prohibit the installation of curtains in rooms with flammable materials, in transport, mines, automated production facilities.The simple operating principle of the curtain is ensured by the well-thought-out design of the device. A powerful fan draws in air from the outside, after which the masses pass through the filter and are cleaned of dust. Further, the air moves through the area of the electric heated spiral, the temperature of the flow rises and it enters the room through the nozzles. The direction of the jet can be vertical or horizontal. Image - Heat curtain DIY repair

The air entering the room is cleaned of dirt, heats up and enters the room

The distribution and intensification of the warm air flow is due to the fan. The power and speed of the equipment can be different, and the functional models have buttons and switches that allow you to set the operating parameters.

The range of air curtains includes several types of devices that differ in design and appearance, location.Electric models are in demand and practical in operation, but they consume a large amount of electricity to heat the air. The heating element in such devices is an electric spiral.

Electric models are easy to use but not economical

There is also a water type, in which a heater is present. This element can withstand drops and low temperatures, which ensures the reliability of the equipment. The device is connected to a central hot water supply, as a result of which the installation and the cost of the structure are higher than that of electrical options.

Water models are difficult to install and have a high cost

These options are the main and most demanded for providing heat at the entrance to the room. The sizes and power of the devices are presented in various versions, which allows you to choose the optimal equipment depending on the parameters of the opening, the outside air temperature and the desired level of heating inside the room.

Before installing the device, it must be taken into account that the heat curtain must correspond to the width (when placed horizontally above the door) or the height of the opening (when installed vertically on the sides of the opening). To do this, you need to select equipment of the appropriate length or install several devices in a row. The installation of an electrical model is the easiest, and the following materials and tools will be required for work:

screwdriver, screws, pencil;
building level, tape measure, puncher;
fittings for fastening included in the set of the thermal curtain;
a pendulum suspension is required for ceiling mounting;
if several devices are fastened in one line, then a connecting kit is needed;
M10 bolts, nuts and screws, consoles.

Pendulum hangers are required for ceiling mounting

When purchasing brackets or hangers for fixing, consider the weight of the equipment. Such parts may be included with the device, but you can pick them up separately.

For openings less than 1.5 m wide, horizontal placement is optimal, which implies mounting the device above the entrance to the room. In this case, the curtain can be installed on the ceiling or above the door. Thus, the device can be fixed against the wall or suspended. Other options for placing the curtain are also possible, each of which has certain features.

The curtain should be equal to the width or height of the opening

Horizontal fixation can be carried out on the ceiling or on the wall above the opening, as mentioned above. The second option is the most in demand, as it allows you to more effectively prevent the ingress of cold air into the room than when installed on the ceiling. In this case, the air flow will be directed from top to bottom.

Horizontal mount protects well from the cold

For installation, perform the following basic steps:

Unpacking equipment, checking the number and type of fasteners.
About 10 - 15 cm recede from the upper edge of the opening, draw the bottom line with a pencil, on which the body should be located.
At a distance equal to the length of the body, the attachment points of the brackets are marked, holes are made there.
The brackets are screwed with bolts and nuts to the body and then the entire system is fixed to the wall.
The equipment is connected to the power grid, its functionality is checked.

Detailed instructions, taking into account the individual characteristics of the device, are supplied with the thermal curtain. Therefore, before installation, you should study the manufacturer's manual.

Placing devices on the sides of the opening to its full height is a vertical method of installing thermal curtains. This technology is optimal if the horizontal method does not allow covering the entire opening area with a warm air flow, as well as with an entrance width of more than 2 m.

Vertical placement requires more devices than horizontal placement

Installation is carried out according to the instructions, but the main stages of work are expressed in the following:

From the edge of the opening, you need to retreat about 10 cm and mark the fixing points of the brackets.
The fasteners are installed in the prepared holes and on the body.
If necessary, connect several buildings with special elements.
Check the equipment performance.

The installation of elements vertically is carried out using the same technology as horizontally. In this case, the housings are fixed on both sides of the opening, which will provide good protection from the cold.

Modern equipment has a flexible cable and plug, which provides connection to the mains through the socket. If a stationary installation is carried out, then it is possible to connect the curtain through a central-type switch, which has an air gap and a parameter of 3 mm. This connection option is always carried out by an electrician.

Installation can be done independently, but the connection is carried out by a wizard

The connection diagram of the heating equipment to the central switch is developed individually. It is simple to connect one device, and for this two wires from the curtain are led to the corresponding network cables, taking into account the location of the "zero" and "phase" wires. For safety, an RCD unit is added to the chain, which can turn off the system in an emergency. The chassis and all power parts must be grounded.

The most famous manufacturers of climatic equipment are Teplomash and Ballu. Each manufacturer, complete with equipment, provides detailed instructions for connection and installation, but the main features can be considered separately.The Ballu brand produces a variety of models of thermal devicesFeatures of connection and operation of Ballu equipment are expressed in the following:

connection to the mains is carried out through a circuit breaker;

when installing fixed wiring, use a three-core cable with a minimum cross-section of 1 mm 2 over a copper conductor. The electrical network to which the curtain will be connected must provide protection of the product against overloads and short-circuit currents;

To install the control panel, unscrew the screw, remove the top cover and panel of the control panel, fix the panel on the wall, install the panel and the top cover.

Devices of the "Teplomash" company have a simple design and are affordableThe device of the "Teplomash" company assumes control of the curtains from a remote or remote control panel. The degree of protection of the control panel shell is IP20. When controlling the curtain from a remote control, it is necessary to keep the distance to the infrared receiving device on the remote control up to 6 m and the angle up to 60 °. The curtains are connected to the network through a circuit breaker and a residual current device (RCD). RCD trip current - 100 mA. The curtains are powered from a three-phase electrical network with a voltage of 380 V / 50 Hz. The control panel assumes the introduction of a control cable 7x0.5 mm using the "hidden wiring" method. If it is necessary to connect the cable with "external wiring", then a 50x10mm recess should be made in the wall at the point where the wire comes out of the control panel body.The selection, installation and connection of air curtains from different manufacturers presuppose adherence to general rules, including taking into account the required functionality and device parameters. Correct further operation will ensure the safety of the equipment.Large and long air curtains with large fans break more often. The fan cylinder often fails due to overheating. This is one of the most common breakdowns. Temperature control will help to avoid such a breakdown. Do not set the regulators to maximum for long run times.If you had to use such a mode, then after a while it is necessary to transfer the heat curtain to a moderate mode of operation.It is also impossible to hang the curtain incorrectly. The heat curtain intended for horizontal installation should be placed horizontally, and vertical - vertically.Also, when replacing parts, boards, microcircuits, sensors, etc., you should install only original spare parts, since only they can give you a guarantee of long-term operation.The best thing you can do in this case is to carefully study the operating instructions, and do everything that is prescribed by it, and what is listed in this answer, as well as contact the service that carried out the installation and commissioning in a timely manner.For information on how to clean the heat curtain, see the attached video clip.

Diagram of an electric thermal curtain.

Most often, parts fail that are easy to replace, so repairing a heat curtain will cost much less than buying new equipment.

Heating curtain installation diagram.

heating elements, fans;
electrical contacts, relays;
failure of the switch.

The climate system can stop working even after improper installation.According to the service centers, the repair of heat curtains, the length of which is more than 80 cm, is more often carried out. This is due to the fact that these devices require the installation of a more complex internal filling, which breaks when overheated.