The intercom does not work: possible causes of the malfunction and ways to solve the problem. What to do if the intercom does not work? How to troubleshoot yourself

From year to year, we regularly paid the monthly fee for the intercom, and everything was fine. But then the intercom operators suddenly decided that they were the smartest and pretended that there had been no payment for the last six months.

The tenants, who kept receipts, ran to prove the fact of payment. And I don't even have receipts. I paid online. Of course, I tried to print something out there and show it to someone, but ... they either do not hear or do not want to hear. In the end, I got tired of everything, and I decided not to pay until they figure it out on their own.

And then one day a friend calls me and informs me that the intercom does not work for me (it just does not call the apartment). When you try to dial a number, everything is reset, an error signal sounds and the indicator shows the inscription "Err".

I came to the conclusion that there can be only one reason for this - the intercoms turn off the intercom in such an original way for non-payment (they can do this for one apartment).

In general, of course, there may be other reasons, but I know exactly why my intercom does not work. Apparently, they think that I should pay twice for the same service.

Interestingly, I was still able to enter the entrance with my set of keys. You can't just open the door by pressing the button on the handset. If guests come, you have to go downstairs and open it manually.

It is clear that in this situation it does not make sense to contact the company servicing the intercom. I had to figure out how to turn it on.

Let's first determine why the intercom may not work:

1. The call to your apartment has been disabled (an error sounds when dialing the apartment number). You cannot call from the street and you, accordingly, cannot open front door by pressing a button in your apartment. The most common option.
2. Deleted your keys from intercom memory. In this case, you cannot enter the entrance with your tablet keys. The keys of the rest of the tenants work as always. They don't usually do this, but there have been cases.
3. Any technical issues blocks, broken wires (intentional or not), acts of vandalism, etc. These cases are always very individual and will not be considered in this article.

Let's see what can be done using the example of the Visit intercom.

If the call to your apartment does not go through

Most likely, the so-called “intercom mafia” did this to force you to pay for the previously imposed service. They do this directly without entering the entrance, changing the intercom settings using the master key.

But this, fortunately, is easily fixable.

So, to connect a disabled intercom Vizit, we proceed as follows.

That's all!

We make sure that the intercom was unlocked (the call to the apartment works), and we return the jumper on the BUD board to its place. And then the intercom operators will burn your manipulations and come up with some other trick.

Once again, no further comment. To enable the call, dial:

#999 1 8 00# 1 *

Instead of 00, you need to substitute the number of your apartment. Then return the jumper to the “WORK” mode, close the lid and quietly leave.

What to do if the key does not work

This is again the tricks of the “intercom mafia”. They simply erase information about your keys from the intercom and that's it.

The problem can be solved in two ways:

• ask the neighbors for one of the keys and go make a couple of copies for yourself and your family members. The city is full of craftsmen who provide such a service. Advantage this method that you will never be disconnected again;
• again write all your keys into the intercom memory. To do this, you will again need access to the control unit (CUD) in order to switch it to programming mode (we read a little higher how this is done).

Regardless of which method you choose, proceed as follows.

We open the ECU, put the jumper in the PRG position, go down and put the intercom in the service settings mode:

#999 (beep twice) 1 (single beep) 3 (squeak again) APARTMENT NUMBER#

After entering the apartment number and the grid (if the number is 3-digit, then the grid should not be pressed), a single signal should sound. This means that everything is OK, the memory is free and ready to write the key. If you hear four beeps in a row, and the indicator lights up the word "FULL"- it means that it will not work to write the keys, you will first have to clear the memory.

After a single beep, apply your key to the reader. You should hear a double beep and see the inscription on the indicator "YES". This means that your key has been successfully written to memory. We apply the next key, then the next one, and so on.
When the keys run out, be sure to press the asterisk * (this is so that all settings are saved). And also be sure to return the jumper back to hide traces of interference.

As you can see, there is nothing easier than connecting the intercom itself, which was turned off for non-payment. It is enough to download the instruction () and carefully read what is written there. You can, for example, set your own individual code that will open the intercom without a key. Or you can write down your own master key so that you don’t have to go into the box and rearrange the jumpers on the board each time :)

P.S. Am I the only one who finds it strange that our whole house has to pay someone for some mythical service? For example, I have never seen anyone doing any work with our intercom (well, they lubricated something, adjusted it, painted it).

And the strangest thing is that some kind of sharazhkin office considers itself entitled to prevent people from getting into their homes. It’s still not clear to me on what basis they interfere with the operation of the intercom at all? It belongs to the residents of our entrance, we bought it with our own money, so don't put your fingers in it.

Intercom is a modern system that provides control of visitor access to any room. However, even this device can break at any moment. What are the types of intercom breakdowns and how to fix the device in case of a malfunction?

Intercom systems are small and multi-subscriber. The latter are used in apartment buildings. The reason for the breakdown of the intercom is often its wear as a result of long-term operation. Also, the equipment may be subject to intentional damage - vandalism. To identify a breakdown, you need to know the device itself of the system. Not only simple, but also complex structures can break.

Causes of problems

In a situation where the intercom does not ring the apartment, the reason may lie in the violation of the electrical signal. In such a case, it is necessary to check the integrity and connection of all wires. The communication of the boards may also be broken.

Sometimes the device's microprocessor or microcontroller may not function.

With a silent call or a failure of the monitor functions, the cause may be a malfunction of the connecting loops. In this case, they will need to be replaced.

If any option or function has failed in the intercom, then it is quite difficult to determine the cause of the problem. After all, each intercom model has its own characteristics. The device settings need to be checked. Individual items may need to be replaced.

In a situation where the equipment does not open door lock, you need to check the power circuits and the cable. The signals to which the key responds are given by the calling device.

If the video signal stops, then most likely the problem lies in the failure of the switch board. Any element of the device may burn out. Its replacement will provide further work cameras. Also, the cause of this problem may be a malfunction of the cable or control board.

In case of violations in the call panel, it is necessary to check the power supply and replace this element or the call panel.

How to fix intercom

A multimeter is used to detect damage. You will also need a soldering iron and screwdrivers. It is necessary to diagnose the device, inspect the call panel and the electric lock. In case of any external damage to the elements, they must be replaced.

If the system does not respond to keystrokes or a magnetic key, then it is necessary to check the power circuits and repair the broken contacts. It is important to inspect the switch - there may be a wire break. Such a malfunction is eliminated only by a called specialist.

If the call panel breaks down, there are no calls and the lock does not function, the subscriber device itself is checked. First, there are terminals on the switch marked D and E, and then the resistance of the device is measured. Doing so will identify a handset that is not functioning. To fix the intercom, the polarity is changed. Breakdown of the intercom can also occur due to a short circuit. The use of a special tester will allow you to find out the place of the short circuit. In such a case, it is necessary to eliminate the consequences. When there are no tones or constantly open castle you need to check and replace the power supply. To eliminate many problems in the intercom system, it is better to call a qualified specialist.

They have. This will help localize the problem. If all the other intercoms work properly, then you have a problem. Carefully inspect the cable that runs from the apartment block to the hole in the wall through which it exits to the entrance. Perhaps its damage (break or short circuit) you can see with the naked eye. Remove it and you will be able to use the intercom again. If all else fails, remove the cover from the apartment unit and see how the wires are inserted into the terminal block. Adjust them if necessary and tighten the screws. Do not change jumpers under any circumstances! Then assemble the block. Wear rubber gloves in case of insulation breakdown in central block nutrition.

If on the screen intercom equipped with an optical keyboard, the message "E-2" appeared, and the keyboard does not work at all (at the same time, the reaction to the application of the keys is normal), this means that some of the holes through which the light passes from the sensors to the receivers are clogged with dirt. Take a closer look at the keyboard frame, and you will find infrared emitters and photo sensors on it. Gently rub them several times with a cloth to remove any dirt. If the message "E-2" disappears shortly and the keyboard works, you have just fixed the problem.

There is a malfunction intercom, the culprit of which are the residents themselves. Wanting to eliminate loud pops when closing the door, they stick electrical tape or adhesive tape on the electromagnet. As a result, the pops disappear, but the force required to open the locked door is sharply reduced, and anyone can open it. Remove all such stickers from the electromagnet, and in order for the door to stop slamming, repair and adjust the closer - in fact, the problem is in it.

It is forbidden to search for and eliminate all other malfunctions of the access block on your own, because this is not your property, but the property of the organization servicing intercoms. However, you will not be able to do this, since the block is attached to the door either with rivets or with screws that have a slot drilled out. The same applies to the part of the wiring located outside the apartment. If the apartment block intercom is combined with the alarm apartment unit, then it is impossible to independently search for and eliminate malfunctions in it. Find an ad in the entrance with the phone number of the organization serving intercoms, and call the master.

Many houses in Moscow are equipped intercoms. And this is right - the homeless do not warm themselves in the entrances, young people do not drink beer and a thief does not hide. But sometimes there are situations when it is simply vital to get into someone else's entrance. To do this, the easiest way is to find out the intercom code.

Instruction

The easiest way to recognize someone else's intercom is to ask the residents of the entrance about it under some plausible pretext. For example, you just drove into an apartment, but you forgot to find out the intercom code from the owner. Whether they tell you the code or not will depend on how good you are at bluffing. But if you look decent (formal suit helps especially well), you don’t smell of fumes from a kilometer away and your speech is decorated with such words as please be so kind and do me a favor, then most likely they will say. After all, the code to the intercom is not the secret code to the safe with money in a Swiss bank.

Remember that there is a special kind of grandmothers who live in the capital's entrances, who think that if they give you the code from the intercom, they will sell their homeland to the Nazis. There are also those who strive to hit you with their stick just because you approached their entrance. It's better not to confront such people. Especially if they united in a brigade and guard on a bench at the entrance (of course - in the summer, but there are those who are “on duty” in the winter as well). Find another informant.

For those who have good vision or have binoculars in combination with patience, you can be advised to wait for the next resident of the entrance and peep the combination of the cherished numbers. But there are pitfalls here. The visitor to the entrance can have a key or just dial a number desired apartment and it will be opened to him. Let's be patient and wait for the next one. Binoculars are best used while in the car. Otherwise, passers-by may call ambulance. Then caring nurses will put on a shirt with long sleeves, tie you up and take you to where they will tell you the code from the intercom. Not even from one, but from all the entrances of Moscow.

A method for those who do not have binoculars or are impatient. Look for an alcoholic who must live on one of the benches in the yard. Just not on the same one as grannies, because alcoholics usually have a war with grannies. Give him a party assignment to find out the intercom code. The prize, you know what it is - half a liter of soul-stirring (yet not for you) liquid. Depending on the state in which the tool you have chosen is located, after a certain time you will receive the coveted numbers and, in spite of the grannies, enter the entrance.

The invariable attributes of modern times to protect the home are metal doors at the entrance to the entrance, equipped with an intercom. There are many reasons why the intercom may not work properly - from the banal inattention of your neighbors to serious damage to the control unit. Most of these breakdowns, you can fix or, at least, localize yourself, without waiting for the arrival of specialists.

You will need

• - tester (multimeter);
• - screwdriver;
• - pliers;
• - good intercom handset.

Instruction

Interview the neighbors and try to imagine the scale of the breakdown: the intercom does not work only for you, on the floor or in the entire entrance. If problems with the intercom are observed only in your apartment, disconnect the cord from the intercom handset, and then connect it back, changing the polarity ("polarity reversal").

Check the address jumpers for the shift, move them a little and wipe them with alcohol. If this does not help, there is only one thing left - to go to the store for a new pipe.

Check the polarity of the connection on the switch. To do this, use a multimeter to measure the resistance between the "tens" bus and the "units" bus for incorrect connections. Their cause may be an independent incorrect connection of the tube between the "units" or "tens" buses, the shorting of one of the ends of the "tens" or "units" buses to the metal case of the shield, or the "breakdown" of one of the switch keys. In the first two cases, it is necessary to restore the normal position of the wiring. In the latter case, it is necessary to replace the switch with a serviceable one.

Contact the company that installed the intercom and ask for an administrator access code. In case of refusal, call the representative office of the manufacturer, indicating to them the nine-digit number of your panel. See if your apartment is programmatically blocked, if the numbering of apartments in the entrance is set correctly, etc.

Call the wizard if all the operations listed above did not bring the expected result.

note

Perform all operations with the utmost care, since intercoms are collectively owned by the residents of the entrance. In addition, companies that service intercoms may consider the results of your "amateur" a non-warranty case.

Helpful advice

The presence of voltage in the wire at correct connection and a working tube can be identified by a characteristic click that sounds when you press the door opening button. With poor or missing contact, there is no click or it is very weak.

Sources:

• Article about intercom repair
• how to connect handset to intercom

In the capital, most houses are equipped with intercoms. On the one hand, this allows you to exclude the walking of strangers on other people's entrances. But what to do, for example, in a situation where you need to get to your home, but you forgot the key to the intercom?

Instruction

Remember that the easiest way to open an intercom without a key is to call someone close to it and ask them to open the door. You can also call your neighbors and explain the situation. There shouldn't be any issues with access.

If there is no one at home or you are going to enter the entrance, for example, to visit friends, but you don’t know the apartment number, then feel free to call through the intercom to any that is in this entrance (usually an interval of apartment numbers that you can get into is signed above the door through this entrance) and ask to open the door for you. All neighbors usually know each other. Explain to whom you are going to go, and they will open it for you. You can also go to the trick and say, for example, that you rent an apartment in this entrance and forgot the keys to the intercom. Ask to open the door. If you are persuasive, you will also be opened.

Remember that a door equipped with an intercom can be opened by physical force. The lock, which with the help of intercom, is magnetic. Despite the fact that the magnets in the lock are quite strongly attracted to each other, if you apply considerable force, they can be separated. So if you pull the door handle very hard, it will open. In order to apply the greatest effort, with one foot rest against the wall of the house, grab the door handle with both hands and pull sharply. If it doesn't work the first time, try again. Be careful not to hit your head the moment the door opens. Despite the fact that the lock is not damaged during this opening, the method is somewhat “barbaric”, therefore, it should be resorted to only in extreme cases.

Before carrying out work on the replacement and installation of the intercom, prepare the right tools and materials. For work you will need: a knife, insulating tape, an electric drill, a screwdriver with nozzles, dowels, pliers, alabaster, putty, self-tapping screws, a nozzle for wall chasing on a drill.

The intercom handset can be located absolutely anywhere in the apartment. The main thing is that it is located within the audibility of her call. usual place for an intercom in an apartment - a wall near the front door.

Preparatory work

Before connecting the intercom, it is necessary to lay wires in the wall in advance and bring their ends out, and also mark with a level the place where the intercom and its mounts will be located. Try to avoid laying wires near power cables, as this may lead to the failure of the intercom. The most harmless thing you can get is distortion of the picture (in the case of video intercoms) or sound.

The intercom is attached to metal base which you must fix on the wall. To fix the plates, drill holes. Fix the plate with screws.

See the device connections in the manual for the intercom. Guided by this diagram, start connecting the wires. To do this, cut off the excess length of the wire, leaving 180-200 mm for installation, after which the edges of the wires must be cleaned. Attach the connecting terminals to the bare ends for strength and safety.

Connect the video peephole according to the diagram.

Installation

Carefully, trying not to damage the intercom body, fasten the ends of the wires to the intercom terminals. Then fix the device itself on the plate.

You can start connecting the video eye. To do this, mark the fastening for the hose through which the cable passes from the intercom to the peephole. Drill holes for the hose attachments and drive in dowels if the wall is made of concrete. With help plastic fasteners fix the hose in the wall and put marks under the place for mounting the peephole.

The best place for mounting a video peephole is one that will provide optimal view- the center of the door at the level of an average height of a person.

Drill a hole in the door if it is not provided by the factory design. If there is already a hole in the door, then you need to check that the diameter of the hole matches the diameter of the video eye. To prevent damage to the wire from the video peephole, very carefully thread it through the cavity of the door and connect it to stationary device. Everything, you can test.

Related videos

Each programming of numbers of subscriber devices. Thus, the lock will respond exclusively to "its" key, which was previously stored in the device's memory. Thanks to the key programming procedure, it is possible to increase the security level of the front door, thereby preventing unauthorized access to the entrance.

As a rule, electronic keys for intercoms must be programmed during the installation of the device in the entrance. In addition, as necessary, enter new key entries into the intercom's memory. After programming them, memorize the lock settings as well. At this stage, you need to set the time to turn on the electromechanical installation or turn off the electromagnet.

If you have to deal with different types locks, this value can vary significantly - from a couple of seconds to half a minute. Test the intercom key: the device should respond to a specific key and not respond if it comes into contact with a different type of key.

2. A subscriber device is a handset or video intercom installed in the subscriber's apartment. With the help of these devices, residents inside the apartment or office will be able to ask their visitor who he is (if he is not familiar to them), the purpose of his visit, and also see his face if a video intercom is used. Each handset has a button to open the door if the door has an electric lock.

3. Locking device. Modern intercoms usually provide communication with an electric lock, although the lock is not integral part intercom, but only executes the command to open the door.

Possible lock options: electromechanical lock(represents a deadbolt extended by an electromagnet or an electric motor), electric magnetic lock(electromagnet holding the door). In the event of a power outage, the lock moves to the "open" position.

4. door closer- a device attached to the front door. Smoothly returns the door to the closed position.

5. Cable and switching. In order for the intercom to start functioning, it is necessary to connect the network elements into a single whole, that is, to install and configure the intercom network.

It is not difficult for a technically savvy man to assemble the entire system, but it is better to entrust this matter to a professional. Moreover, the warranty service for the operation of the system will be preserved only if the intercom is installed by the master.

After the apartment/office has received a call, pick up the intercom handset of the UKP. On the UKP, press and release the door lock release button five or six times. Each time you press the button on the call block, the “wait for an answer” indicator should turn off, and the “come in” indicator should be activated. After the sixth time the door opening button is pressed and released on the control panel, the apartment number dialing indicator is activated on the call unit, then a single signal sounds, which confirms the readiness for writing a new personal code. However, duplex communication is maintained so that operators can control the process.

Dial a new individual code on the call block. After that, inform the person who is in the apartment / office on the other side of the intercom about the end of entering the code.

Everyone wants to feel comfortable in own house without thinking about the dangers from the outside. That is why security systems that are installed in private and apartment buildings are so popular today. One of the most sought after security devices in the world Russian market is an intercom Vizit A: It is easy to operate and has a reasonable price. Unfortunately, there is no such equipment that would not fail sooner or later.

Repair of intercoms of the presented company is complicated by the fact that it is often difficult to determine minor breakdowns of the device. In any case, it is better to seek help from a professional so as not to cause more harm. protective system and not disable it completely.

How can I troubleshoot a device?

Before starting repair work, you should find out why the intercom does not work. Troubleshooting starts with external examination devices. There are the following stages of diagnostics:

• If the Vizit intercom is installed in an apartment building, then you should talk with your neighbors and find out if the equipment works for them;
• Inspection of the external call panel of the Vizit intercom. It is located outside and is affected weather conditions, and may also be subjected to intentional harm by hooligans;
• Quite often, the reason for the failure of the intercom Visit is associated with a door closer, which can break due to temperature changes or frequent slamming of the door. You can adjust the mechanism with a screwdriver;
• Ringing of communications laid to the device, since the cause of the malfunction may be a cable break (in this case, a tester is used);
• Checking the controller (it is better not to repair it yourself);
• If the cause of the malfunction is not identified, then the switch should be checked.

If the cause of the breakdown is not found and the Vizit intercom is still faulty, you should call the wizard, who will quickly and efficiently fix the problem.

When deciding to carry out repairs on your own, you need to familiarize yourself with the connection diagram of the security mechanism, which always comes with the device.

What are the reasons for the lack of a call to one apartment?

Quite often there are cases when the Visit does not work only in one apartment. There may be several reasons for this:

• Untimely maintenance of equipment, as a result of which the elements of the mechanism simply wear out;
• Breaking;
• Cable breakage (in this case, it is necessary to find the breakage point and eliminate it by soldering).

Any repair of intercoms is not complete without checking the polarity of the connection (it is measured with a multimeter). If the polarity is reversed, then, using the connection instructions, restore the correct connection of the wires.

The most common cause of breakdown of the Vizit intercom is found in the handset of the device. Do not rush to change the negotiation mechanism, as you can try to repair it.

To do this, contact the company that installs and further maintains the equipment.

On the video - an overview of intercoms Visit:

Prices for repair work of protective equipment

Repair work requires certain costs, so it is better not to forget to carry out timely maintenance of the protection system.

Before installing the Vizit intercom, you should conclude an agreement with the supplier for further service of the device. This will help avoid problems in the future and extend the life of the equipment.

When repairing a protective device installed in an apartment building, it should be remembered that the access equipment is the property of the intercom service company.

Today, in most high-rise buildings, in many offices and private homes, an intercom is installed.

This device controls access to the premises, allows the owner to open the door in the entrance, while remaining in his apartment.

The intercom is installed by special services. Sometimes the device fails. Where to contact if the intercom does not work?

in offices and apartment buildings install intercoms various types. Most often, these devices fail in apartment buildings, which is explained large quantity users who use the system on a daily basis.

To understand the cause of the breakdown of the intercom, you need to know how the device works. Any intercom has a subscriber device: a handset or a monitor. At the other end of the connection there is a call panel with buttons for dialing the apartment number.

The signal from the panel is transmitted to the handset, then passes to common block control, switch and lock button. The switch determines the code typed on the keypad, which allows you to send a signal to a specific subscriber.

If the owner of the apartment wants to open the door, he sends a response signal to the control unit. This element of the device opens the magnetic lock that holds the door.

There are 3 main types of intercoms:

All these varieties differ from each other in the way signal transmission and the device of communication lines.

Digital intercoms have a two-wire line for signal transmission. The apartment number is determined using jumpers located on the tube.

Coordinate intercoms connect the call block with the subscriber's control element through a special switch.

The video intercom allows not only to hear, but also to see the visitor.

There are many reasons why the intercom may not work.. If the design of the device is quite complex (as is the case in video intercoms), it quickly fails.

Any element in the system can break. Each model is unique in its own way, and all have their weak points.

Sometimes the problem can be fixed with just a simple adjustment of the settings, and it happens that you have to call specialists to eliminate the causes or even replace the device.

Intercoms most often lose their functionality due to misuse or lack of systematic service.

Among the faults, the most frequent are the following:

• violation of the integrity of the wires (contacts) or the power circuit;
• damage to the wires on the electronic board;
• failure of the switch;
• the speech tube does not function;
• interruption in the operation of the controller;
• damage to the loops or call panel;
• the power supply does not work, etc.

If the device does not work in an apartment building, then first interview the neighbors and try to find out where the failure occurred, as well as determine the extent of the breakdown.

If the equipment does not function only in your apartment, then disconnect the cord from the voice tube, and after a few seconds, connect it back.

As a result of such a reset, the polarity will change. Then, using a tester, check for voltage on the cord entering the apartment.

There are several models of intercom keys from different manufacturers:

If there is no time to make a duplicate key, and you need to get into the house urgently, then you can use secret codes devices or simply hack the intercom.

Note! Each intercom has its own hacking code; You can find the codes on the Internet.

The intercom handset can be easily repaired by yourself. To do this, arm yourself necessary tools, such as:

• knife;
• screwdriver;
• pliers.

What problems can arise with the tube? Here are a few breakdowns:

Important! If it is difficult to determine the malfunction of the intercom, then you need to contact a specialist.

If the intercom in the entrance does not work and you can’t fix it yourself, then you need to call specialists who can repair the device.

The phone number to call specialists can usually be found:

• On the subscription fee receipt.
• On the panel of the intercom itself. There is a metal insert with phone numbers stamped on it.

Intercom service frequently turns on management company in the list of services that are provided at home, so in the event of a breakdown, you can contact this organization.

Who should repair and pay for intercom repairs in 2019?

If you have lost or broken the key to the intercom, then you pay for the order and production of duplicates yourself.

If the handset or the intercom itself is broken, the call of the master is usually included in the monthly subscription fee for using the intercom, and the device is repaired at the expense of the service company.

Note! To replace the intercom, you need the consent of at least 60% of the residents of the house. Otherwise, there can be no question of replacing the device.

Intercom - good protection at home if the device is working properly. In the event of a problem with the intercom, contact the housing company or call specialists.

Almost every day, one way or another, we come across intercoms and understand how they help keep the entrance clean and prevent the passage of unwanted persons. But what to do if the intercom does not work?

We will try to reveal the main causes of intercom malfunctions. If you wish, as well as having some skills and tools, you can repair it yourself. Least, this information will help you control the quality of the intercom repair and protect you from fraud, which, unfortunately, is still very common in the field of such services.

If you do not want to understand all the intricacies and causes of a breakdown, or simply do not have time for this, and the intercom does not work, call us and we will carry out repairs in a high-quality manner, in a short time and without trying to impose non-existent malfunctions.

To begin with, let's define what is called an intercom. At a minimum, the intercom consists of a call panel and a subscriber device (handset or monitor). Depending on the model, a crossbar, a processor, a video splitter, a control unit are used. Very often, intercoms also include an access control system, consisting of an electromagnetic or electromechanical lock, an access control system controller, a power supply, a reader electronic keys and exit buttons. On the one hand, this different systems, but in most cases they function as a single unit. Therefore, for a simpler understanding, further in the text we will refer to them as a single system.

To find the cause of the malfunction, first of all, you need to decide what type of intercom you have installed. As a rule, when it comes to a residential apartment building, coordinate or so-called "digital" multi-subscriber intercoms are used. The most popular coordinate intercoms installed in Russia are: Visit, Tsifral, Eltis, Metakom and Marshal (produces both coordinate and digital ones). Of the "digital" intercoms, the following are often used: Marshal, Raikman, Laskomex, Proel, Metakom, Polylock (formerly called Keyman).

The main difference between coordinate intercoms and digital intercoms is the method of communication between the call unit and the subscriber device, and at the same time the differences in laying and connecting cable lines. We will not go into details, we will describe only some of the features by which they can be distinguished. In digital ones, a single two-wire communication line is used to connect the call panel with subscriber devices, the apartment number is determined by setting the jumpers on the handset (an example is shown on the Laskomex LM-8D handset). In coordinate intercoms, for communication between the call unit and the subscriber device, as a rule, a coordinate switch is used. The most reliable way to distinguish coordinate intercom from digital, of course, look at the model and find a description for it. You can also pick up the handset and see its model. If there is no model designation sticker on the back of the handset, you can disassemble the handset and check for the presence or absence of jumpers (as already mentioned above, digital handsets will have jumpers for setting the apartment number). Some manufacturers write a model on the internal board of the audio handset, by which you can determine the type of intercom. With a high probability, you can determine which intercom is installed on your appearance calling panel. Below in the photos, you can see which call panel you have installed.

Intercoms

Intercoms Visit (Vizit)

Intercoms Cyfral (Cyfral)

Intercoms Eltis (Eltis)

Intercoms Metakom (Metakom)

Digital intercoms

Intercoms Polylock (Keyman)

Intercoms Marshal (Marshal)

Intercoms Laskomex

Intercom Proel

Raikmann intercoms

Intercom Metacom (Metakom)

video intercom

The third type of frequently used intercoms, especially in offices, apartments, in the country, is an individual video intercom.

As a rule, their connection scheme is the same (it differs in very rare cases) and consists of 4 wires:

• video signal;
• audio signal;
• power supply +12V;
• Common (GND).

Scheme of connecting an individual video intercom (the scheme is based on the Commax monitor and the common Activision calling panel)

When installing a video intercom, it is important to pay attention to the correct connection of the wires. In the calling panels of video intercoms various manufacturers are used different colors wires. Very often, the positive wire may not be red, but, for example, yellow color see the diagram (these are the colors that Commax uses in intercom monitors). Therefore, before connecting, be sure to read the instructions and the connection diagram, if the video intercom is connected incorrectly, it may fail!

If an individual video intercom works in conjunction with an access control system, then 2 more wires are used for connection. They usually do not have polarity, as they come from a control relay with normally open contacts. Using electromagnetic lock both wires are connected to the controller, to the output button terminals. When using an electromechanical lock, both wires are connected to the gap of the positive power wire of the lock.

Individual video intercoms can be either for one subscriber or for several. At the same time, the connection scheme remains the same, four wires go to each monitor of the video intercom from the call panel.

Also on sale you can find IP video intercoms, but their distribution in Moscow, and even more so in Russia, is this moment very low. At the same time, the approach to repair and connection methods differ dramatically. Therefore, we will not consider the causes of their malfunctions in this material, but in the future we will definitely return to this issue.

Now that you can determine which intercom you have installed, let's try to find the reason why it does not work. Below are some common problems of intercoms and access control systems, find the most suitable case and see the solution. The list of faults will be gradually replenished.

List of typical malfunctions of intercoms and access control systems

A common problem with electromagnetic locks is remanence. If, when you press the exit button, and in some cases even when the power is turned off, the lock continues to keep the gate or door closed, then in this case, the simplest household solution would be to stick a small strip of adhesive tape at the contact point of the lock with the counter metal plate. In almost all modern ACS controllers, and in ...

In ™Keyman, ™Polylock, ™Raikman, ™Laskomex, ™Proel and some other multi-subscriber intercoms (see image), as a rule, intersecting light beams are used to read button presses. If, when trying to dial an access code to enter the entrance or the number of the subscriber (apartment), difficulties periodically arise, and the symbol “E” or “Err” lights up on the display of the door panel of the video intercom or audio intercom, you must first clear ...

Very often, in the off-season (autumn, spring) with temperature fluctuations from plus to minus, electromagnetic lock on the gate can "stick" in the closed position. To open the lock on the wicket, you must press the exit button and push the wicket towards the opening with a sharp movement. IMPORTANT!!! This operation can only be carried out according to common sense and be sure to follow the safety rules and make sure that the installation is correct and secure ...

A call arrives on the handset and it is possible to speak, but when you press the "open" button, the lock remains closed. In such cases, the intercom system requires more serious diagnostics, because. There are many possible causes of a malfunction, from a failed "open" button on the audio intercom handset to problems with cable lines and breakdown of the access control system controller...

To date, most of the entrance doors to the entrances apartment buildings in Moscow and others big cities equipped with intercoms. This is modern systems restriction of access to the premises from strangers. Thanks to the use of these systems, the entry into the house of those people who do not have the appropriate intercom key or do not know the access code to the door is excluded.

Basically, intercom systems are installed in apartment buildings, the principle of operation of which is identical and the design features differ slightly. Regardless of the type of intercom and its design, its package includes the following main elements:

• call block with screen and dialer;
• electromechanical lock;
• subscriber unit with a voice tube.

The intercom system is an electronic-mechanical mechanism that, for one reason or another, may malfunction during operation. The reason that the device does not open the front door can be very different. One of the most common reasons when the intercom does not open the door is the breakdown of the intercom handset. About what kind of breakdowns can be, and how to fix them, we will consider below.

How does a speaking tube work?

The speech tube is one of the main components of a complete intercom system. It is installed indoors together with the subscriber device. With its help, audio communication is carried out between the guest and the owner of the apartment, and it also provides the possibility of allowing access to the house. Design features tubes of various intercom systems are almost the same. For example, or have almost the same voice tubes, which may differ in design, shape, functionality and materials used.

The main components of the speech tube are:

• microphone;
• speaker;
• electronic board;
• connecting wires;
• frame.

When a call is made to one or another apartment from the inside of a locked door equipped with an intercom, the owner can make a voice connection with the one who came to visit him using the voice tube. Using this intercom, you can give access to the guest to the room by remotely opening the electromechanical door lock. If the handset is broken for one reason or another, then two-way communication will not be possible, and the ability to open doors from the subscriber unit will also be limited. Below we will consider what main malfunctions can occur, and what reasons can provoke a breakdown.

Possible causes of tube malfunctions and repair methods

The intercom is one of the main elements of a complete intercom system. The situation when the intercom does not function is quite unpleasant and brings certain inconvenience to users. In this case, the apartment owner does not have the ability to control access to housing using his subscriber device. If the intercom device does not function in only one of the apartments, then the likelihood that the voice tube has failed is very high.

If the speaking tube is broken, you can always replace it with new devices and continue to use the intercom system without any restrictions. But there are a number of breakdowns in which it is not necessary to change the entire intercom handset, you can simply eliminate these malfunctions and continue to use the intercom system without resorting to financial costs for the purchase of a new intercom. There are several main types of breakdowns of this part of the intercom system:

• the tongue is broken or sinks;
• there is no sound;
• To open the door, you need to press the button again.

Let's consider each of them in more detail.

Broken or stuck tongue

In the event that the tongue sinks, until it is pulled out, the call will go on constantly, and it will not be possible to open the door. In order to solve this problem, you should initially disassemble the tube body by unscrewing the screws that hold it.

The tongue is located on the front panel where the door opening button and the tube on / off toggle switch are located. On the inside The front panel has a special bracket that holds the tongue, allowing it to move back and forth. During operation, this bracket unbends a little, which is why the tongue begins to move not only back and forth, but also to the left / right. As a result, it disengages from the hook and does not always return to its original position when the tube is hung up. As a result of this, such a breakdown as the retraction of the tongue is observed.

To eliminate it, you should return the bracket to its original position. To do this, you can use a conventional soldering iron, with which the plastic bracket warms up. When it is well warmed up, the bracket is aligned in such a way that the tongue is held by it, and its movement around the sides is excluded. After the plastic has cooled down, the tongue will be fixed and can only move back and forth, ensuring the normal functioning of the intercom.

The most common reason is that the open button does not work.

• Open the tube body.

• Pulling out the fee.
• We dismantle the old non-working button and solder a new one.

No sound

If there is no sound when using the intercom handset, then most likely the microphone or speaker is out of order. In order to fix this problem, you need to disassemble the device and check the performance of its microphone and speaker. It is also possible that the switching wires between these nodes have soldered or moved away. If the speaker or microphone still does not work, then you need to purchase a similar part and install it in place of the failed one. After that, the voice tube will function with the same functionality as before the breakdown.

Press again to open the door

The reason for pressing the button again in order to open the door is a failed microswitch (mic). This device is located on the electronic board under the door opening button. During operation, the mikrik may fail, which will exclude the possibility of opening the door using a subscriber device. The first sign that the microswitch is not functioning properly is a popping noise in the speaker when the door release button is pressed. After that, the microswitch will remain operational for some time, although opening the door the first time is unlikely to happen - for this, you will need to press the button several more times.

To correct the situation, you need to replace this microswitch, because it cannot be restored. The cost of the mikrik is low, so repairs will not require a lot of financial resources. After a new mikrik is purchased, you need to unsolder the old one from the electronic board. Since the microswitch is tightly attached to the electronic board, it is necessary to carefully unsolder it and remove it from the contact sockets of the electronic board. After the mic has been removed, a new switch is installed in its place and soldered to the contacts of the electronic board. Thanks to this simple repair the call button for opening the doors will function as before.

Conclusion

Since the intercom handset is one of the main elements of the intercom system, it is important that it is constantly in working order. If a minor breakdown occurs, for example, one of those mentioned above, you can fix it yourself, after which you can continue to use the device for its intended purpose. In case of more complex breakdowns, you need to seek help from specialists who service intercom systems. They will be able to quickly eliminate the breakdown, as well as the cause of its occurrence, and if the tube cannot be repaired, they will replace it with a new device. After that, the functionality of the intercom system will be resumed and the user will be able to fully use all its capabilities.