The handle of a plastic window does not close all the way, why does it scroll when closed, what to do, how to open a PVC frame if the mechanism is jammed or broken?

Problems with the handles of plastic windows - jamming, scrolling, not closing completely, tightness - constitute a separate group of faults.
The fittings are used intensively, they experience constant increased loads, they become deformed and wear out, so these problems are well studied, as are the ways to eliminate them.

Timely inspection, lubrication, and adjustment will reduce the likelihood of malfunctions, but still will not eliminate them completely. Let's consider why breakdowns of the opening mechanism occur, how to eliminate and prevent them.

What problems might arise?

Failures of plastic windows can be grouped - there are quite a lot of them due to the complexity of the glass unit design, due to which a high level of comfort and optionality is achieved.

Problems with different parts of the fittings should be highlighted.
Damage or incorrect position of the lock, hinges, adjusting parts, running mechanism (scissors) provokes warping, stiffness, and jamming of the valves.
We will separately highlight breakdowns of fasteners and transmission unit.
There is a group of faults that we are considering - related to the handle.

The handle is the main element that directly controls the plastic window, moving it to different positions. The gearbox is the main executive part that transmits commands. Replacing the first one will not be difficult. But if the second one, that is, the rotary-transfer unit, is broken, then the malfunction is quite critical, and repairing it is labor-intensive.

List of malfunctions of the handle of PVC double-glazed windows:

stuck in the closed/open position with the sash open/closed;
turning, scrolling, while commands are not transmitted;
looseness, play (swaying from side to side);
does not turn completely or with excessive, clearly abnormal force;
cracks, mechanical damage.

In order to fully understand the nature of handle breakdowns, we will describe the design of the standard, simplest version, the elements of which are available in all possible modifications:

L-shaped handle, and there are also options that are more or less curved, almost U-shaped).
A socket with holes for fastening bolts, that is, a base, inside of which:
A spring resting on a tetrahedral pin. The first one performs push-ups and shock absorption, since in most operations the handle must be recessed and then the desired rotation must be made.
Let’s say that the handle is a gearbox that transmits its commands to the rest of the fittings.
Fastening bolts.

Note. The handles of PVC structures are fundamentally similar in structure. But some nuances may differ among different manufacturers of plastic windows.

For example, stronger springs, rings, joints and riveting are of better quality, and they significantly affect the reliability of this element. For example, a silumin retaining ring or the same housing does not last long (2 - 3 years), unlike these parts made of durable alloys, which have a service life of tens of years.

It should be taken into account that there are also anti-burglary handles with locks and additional locking mechanisms to protect against children. Problems with the handle can also arise due to their breakage.

The window handle does not turn or does not turn completely

The reasons for complete or partial jamming of a window handle can be the following factors:

Drying of hardware lubricant. This problem is quite easy to solve. You need to purchase a special or universal lubricant and lubricate all moving parts of the fittings by pouring lubricant into the holes. By rotating the handle, distribute the lubricant evenly throughout the entire mechanism.
Clogged fitting mechanism. To remove the blockage, it is necessary to completely disassemble the mechanism. This work is best left to specialists. If you decide to make the repair yourself, then when disassembling it is better to remember the order of each part. And after cleaning, the mechanism can also be lubricated.
The fitting mechanism is broken. This problem can be solved by replacing the fittings, but to do this you need to disassemble the old one, find a suitable new one and install it. In the process, you may encounter many difficulties - the new fittings do not fit, do not adjust, or become jammed. To avoid all these troubles, it is better to call a specialist.
The window sash sagged. Even if the sagging is not noticeable visually, it can still cause the handle to jam, because a deviation of 1 mm is enough for this. The height of the sash is adjusted using a hex wrench and adjusting screws located at the bottom of the sash. They may be located under a decorative overlay. When making several revolutions, you must try to close the sash. Continue the process until normal operation of the window is established.

What to do with defects on plastic windows after installation - tips and recommendations. Find out how to clean plastic windows from stuck film in this article.

How to repair a double-glazed window in which moisture collects -.

Causes of breakdowns

All reasons for the incorrect operation of the opening element of double-glazed windows can be divided into groups:

Mechanical damage to the housing, socket, internal elements (tetrahedral pin, spring, raster ring, rods, stiffeners, recesses holding them).
Broken or worn parts of the actuator : gearbox, transmission circuit, strapping elements, blocker.
The above elements are serviceable, but are set in the wrong position (including due to incorrect operation), errors during adjustment. This group also includes a shift in the position of the locking plate (gate blocker) of micro-slot ventilation, which is often caused by loosening of fasteners (bolts, screws).
Deformation, distortion, sagging of the sash. It is logical that if the position of the specified element is incorrect, the tongues (locking elements) of the latches of the locking mechanism will rest against the wall of the reciprocal groove, accordingly, the movement of the handle will be tight, not completely, or even jamming will occur. The movement of the scissors and the engagement of the trunnions will also be disrupted.
Dirt, foreign objects caught in grooves, mechanisms, joints.
Shrinkage of the house , leading to deformations and shifting of glass unit elements. This reason is quite rare, but cannot be ruled out.

Some other types of breakdowns, incorrect positions of other parts directly cause problems with the handle. For example, if the sash is skewed, the handle will, of course, move more slowly or there will be a possibility that it will completely jam.

The initial causes of malfunctions of the handle of PVC double-glazed windows are:

Using excessive force, pressure, or trying to open with a sharp jerk.
Manufacturing defects.
Incorrect installation, looseness due to which the lever experiences excessive loads.
Excessive or incorrect load due to incorrect adjustment, failure to carry out this procedure in a timely manner for preventive purposes.
Lack of proper care. Any lubricant must be renewed periodically: over time, no matter how high-quality it is, dirt is mixed into it, the mixture becomes abrasive, excessively thick, leading to stiffness and jamming.
Natural wear and tear. This is very typical for plastic double-glazed windows, since the structure is heavy with numerous complex elements.

Is it possible to fix the problem?

If problems with the window began a long time after the start of operation, in most cases the problem can be solved independently if you have at least basic skills in working with a screwdriver and a hexagon. But there are situations when you cannot do without the help of specialists and high-quality repairs.

It is recommended to call specialists if:

There is no need to try to repair serious damage, this may aggravate the problem.

What can I fix myself?

All breakdowns associated with the handle of a PVC window can be repaired with your own hands, except perhaps for the case of jamming of a closed sash due to a broken gearbox, when the tetrahedral pin of the handle rotates without transmitting a command. It all depends on the skills and abilities of the owner of this product.

Some problems do not require special experience (squeezing the lock, replacing the lever itself). For the rest (dismantling scissors), it is necessary to study the design of the window, disassemble it, remove the sashes, complex elements that ensure movement.

There are many instructions on the Internet on how to repair PVC windows from different manufacturers, and technical documents with diagrams showing their structure are also freely available. Most breakdowns are not so specific that it is impossible to cope with them yourself if you have a certain skill.

Not everyone wants to tinker with a bulky structure or make final adjustments. Such manipulations take a lot of time and attention, so for complex repair procedures, calling a specialist who provides comprehensive maintenance, including lubrication and adjustment, is often more appropriate.

Measures that can be implemented with minimal effort and experience:

handle replacement;
tightening fasteners (bolts pressing the socket, fixing the lever);
cleaning, lubrication of visible grooves and mechanisms;
sash adjustment;
manipulations with the blocker.

Complex, time-consuming procedures for which it is more advisable to call a specialist:

Replacement, position correction, installation of functional units in their place, for example, “scissors” - an elbow joint made of guides, with the help of which the sash moves and is held in a certain position.
Replacement of the rotary mechanism, central locking, counterparts, elements with trunnions, with a lock.
Removing dirt from hidden elements, that is, when cleaning requires their dismantling. The technician removes parts of the glass unit and rinses it in a special bath;
If you need to carry out a complex of works.

Reference. Perhaps the only cases when the help of a specialist is most critically needed is when the sashes are jammed in a fully closed state due to damage to the gearbox or functional fittings.

In this case, the handle does not transmit commands. That is, even if you pull it out, it will be impossible to control it with a tetrahedral pin. Repairs and replacement of parts are impossible, since there is no basic access. One solution is to remove the sash from the hinges, but it is better to entrust this to a specialist so as not to damage the trunnions and other parts.

Adjusting the position of the valves, the distortion of which also affects the operation of the handle, is in principle not a particularly complicated procedure - it simply consists of tightening the bolts on the hinges and correcting the trunnions. Despite the fact that the setup can be easily done independently, it is common practice to call a specialist for this event.

Setting up micro ventilation

Micro-ventilation is a built-in function of a modern window, when by turning the handle to the desired position, the sash leaves a gap of a few millimeters for air to enter from the street. But you can also install additional devices to organize normal air exchange.

Adjustment using a comb

The comb is an additional fitting that works as a limiter for the angle of inclination of the sash in ventilation mode. The window can be installed with a slope of 30, 45 or 60 degrees.

Required Tools

To repair, you will need an adjustment kit, including keys and screwdrivers. Tools can be collected separately, we list them and additional tools:

Knife, scissors, flat screwdriver, similar tools with a blade/plate, preferably not sharp, for example, a spatula with rounded edges for squeezing out the blocker, moving the decorative cap on the handle socket.
Pliers.
A screwdriver, cross-shaped bits for it of different sizes (window models do not always have fasteners of the same size).
Hex keys 4 (most often), 5 or 6 mm.
Lubrication (we will dwell on this point in more detail in another section below):
silicone (for fittings), oil (for metal parts).
Rags, brush, vacuum cleaner to remove dust and dirt.

Important! Under no circumstances should you use substances containing solvents, such as acetone or acids, to clean the window or its elements: they corrode plastic and rubber. And also, there is no need to use abrasives (hard rags, brushes, soda) - they will scratch the PVC, the surface will lose its gloss, and dirt will get into the microscratches, which will make them noticeable.

If the window is jammed closed and the handle turns and does not transmit commands, then remove it, twist the tetrahedral pin with pliers, or use one on the adjustment module (pictured above in the blue case).

You rarely come across models where the handle is attached with self-tapping screws at the end of the sash (we described such a case at the end of the article), that is, to remove it there is nothing left to do except drill it, you will need a drill or a screwdriver with a drill.

Do-it-yourself repair of the plastic window mechanism

A plastic window is an extremely stable and very reliable thing, but at the same time the mechanism is quite fragile, problems still exist. They may be associated with careless use, shrinkage of the house, or the fact that the normal operation of mechanisms is hampered by accumulated debris in them. Yes, just how many times and with what force we open and close windows already prepares us for upcoming breakdowns. The good news is that almost all of these problems are the same and can be eliminated without any special preparation. Let's try to understand this simple mechanism and learn how to repair the mechanism of plastic windows with our own hands.

Problem solving options

We will consider in detail all possible breakdowns of the handles of plastic double-glazed windows and repair methods. Malfunctions can be caused by incorrect operation of elements not related to the handle or its mechanism, so we will describe ways to correct such problems.

Looseness and play

Looseness of the handle of a double-glazed window is the most basic breakdown with an equally easy repair. The reason is the weakening of the fasteners, which happens often, since they spontaneously unscrew due to microvibrations during use.

This is typical for all similar structures that are often used - not only for most windows, but also, for example, for interior doors.

The fit of the handle to the moving transmission mechanisms becomes loose - the sash opens poorly and jams.

The repair consists of folding back the decorative trim at the base of the handle and tightening the bolts with a Phillips screwdriver. Do not use sharp objects to lift the record to avoid scratching it. The same is done with fasteners at the end of the sash.

Advice! To prevent spontaneous unscrewing of the bolts, you can apply acrylic sealant, a drop of epoxy resin to the threads or under the cap (but not solvent-based adhesives or cyanoacrylate, as they corrode plastic), and make a seal with a rubber washer-gasket.

Scrolls and does not send commands

The handle rotates freely and does not transmit commands to the fittings if the body or its internal elements holding the pin are broken. The solution is a complete replacement.

If the handle is in good working order, but the commands do not reach the parts that lock the sash (eccentrics), then the gearbox (rotary transmission unit) has failed. In this case, a creaking, grinding, or crackling sound is usually observed. The solution is to purchase and replace this element (not the handle, but the gearbox).

Doesn't turn

Jamming of the handle, its movement is tight and/or not all the way can cause:

clogging;
sagging;
sash misalignment.

If it becomes dirty, unscrew the fastening bolts, take out the handle, wash it, clean not only all its parts, the socket, the tongue, but also the adjacent space, all parts that respond and provide movement and blocking around the perimeter of the glass unit, for example, scissors, especially at the joints. That is, all the fittings, seals, fitting segments. Then new lubricant is applied.

Ideally, cleaning and lubrication can be done only by disassembling the window, so often a specialist is called for this, who will perform a range of works, including the indicated measures, washing in a special bath. But if there is no desire to pay a specialist, then the procedure is done at least as well as possible with your own hands.

Lubrication problems

For lubrication, substances without resins, acids, or abrasives are used.

Organic oils, food products, cosmetic/medicinal ointments and creams, even with a high content of petroleum jelly and glycerin, are not used, as they release aggressive substances and also intensively accumulate dirt, creating hard, thick abrasive masses.
Petroleum-based lubricants are used only for metal/plastic parts - they should not come into contact with rubber seals.

Lubricant options:

The best choice is special products recommended by the manufacturer for PVC double-glazed windows.
But they are often unreasonably expensive (about 500-1500 rubles for a small tube). In addition, such products are often very similar in composition (although not equivalent) to ordinary cheap traditional universal products. For example, ARALUB SKL 2 Schmierfett Typ KHS 2 N-50 and Ciatim 201 grease contain similar ingredients, and some Molykote products resemble Litol.
For metal parts and accessories, silicone can be used, but it is better to take machine oil (highly purified, the kind for sewing machines, bicycles), spray lubricant for weapons, grease.
For sealing (not for metal, not for anodized coatings) - silicone-based products (sprays or other forms) (sold in car dealerships).
WD is a classic. For rubber seals, metal parts, fittings. This remedy is considered universal, a kind of minimum.
against ordinary lithol for metal parts and accessories (its price is 25-650
rubles per tube). In addition, it contains anti-seize additives, so it is well suited for the old mechanism.
It is not advisable to use more household products, but it is acceptable to use petroleum jelly (preferably technical) and glycerin. But under no circumstances should you use cosmetic/medical creams, ointments, etc., with these ingredients.
There are varied opinions on graphite lubricant: some do not recommend it, since it still contains, although not aggressive, not particularly hard, abrasives.

Advice! Typically, the fittings are lubricated with a spray lubricant for weapons (works well with nanoprotection) or machine oil (for sewing machines, bicycles).

There are recommendations to choose simple auto/motor products, but thicker (will not be produced quickly), solid oil, substances based on it (Ciatim).

For sealing elements, definitely only silicone-based products (sprays or other forms); non-special ones sold in car dealerships are also suitable. If you don’t have the products listed above, you can take WD (for metal, rubber), which is also convenient for initial rinsing.

Rules:

Machine oil (petroleum products) should not come into contact with the rubber seals.
Before processing, the surface to be treated must be thoroughly cleaned.
All lubricants absorb dust and dirt and become abrasive over time, so cleaning and updating must be done regularly (once every six months, or at least once a year).
The more excess grease, the more intensely it absorbs dust, so there is no need to overdo it with the amount. You need to apply the substance, turn the handle up/down several times (open/close the window in different directions) - the mixture will go into the cracks, then remove the excess mass with a rag.
Liquid formulations wash away dirt, but they quickly disappear, they are not enough for a long time, so you can apply them first (swish until it flows), and then apply thicker consistency products.

On a note. Experts for plastic windows usually recommend only special products; there are sets with them, with brushes and rags.

But often this is due only to commercial considerations and the predicted guaranteed action from the manufacturer. The composition of conventional and branded lubricants is often very similar, but special products are several times more expensive. This issue is often discussed on forums.

You can learn more about how to properly and the best way to lubricate plastic windows here.

The door cannot be closed

The control lever may not go all the way due to a violation of the geometry of the valves, which can be easily determined visually by looking at the lines of contact with the frame.

It is necessary to make adjustments in three main areas:

High-low. The bolts on the upper segment of the lower hinge are responsible for this line.
Right left. This is a horizontal plane, adjustment is made by the side bolt of the lower hinge, the upper scissors.
Closer and further. In this direction, adjustment is made using the lower/upper hinge and locking pins in the end part.

Adjustment may differ for different brands and types of construction, for example:

Often, craftsmen are brought in to adjust a plastic window, since it is necessary to determine the correct position of the sash and the pressing force. However, if you study the instructions, manuals, and recommendations of manufacturers, of which there are plenty on the Internet, then the work will be quite simple. To set up, you only need one tool - a hex wrench (4, 5, 6 mm).

Jammed

If the handle is stuck in the “open” or “closed” position, it is possible that the cause is the latching of the lock. It is not difficult to diagnose a breakdown - it feels like there is a strong barrier in the way of the handle.

Removing jamming of the handle of a PVC double-glazed window when the lock is latched:

Press the lock with your fingers.
Thus, the part will be taken out of working condition. The element is located at the end of the sash, near the element with the tongue, and looks like a long narrow metal plate that can be moved in different directions. The shape may differ in different models with cutouts and protrusions, for example, in “Winkhaup”, “Roto”, “Gu” this is a tongue at an angle, it must be pressed so that it becomes parallel to the seal.
Turn the handle.

Not placed for ventilation

If the window does not open to the “ventilation” position and does not close from it, then the cause of the malfunction is the “scissors” (elbow metal joints) that have come out of their grooves. This mechanism is responsible for the correct movement of the sash: if it does not work correctly, the handle is blocked.

Repair instructions in this situation:

Remove the sash from its hinges.
Remove the decorative caps from the hinges.
Use a knife, flat screwdriver, or similar tool to pull the hinge pin, pull it out with your fingers or pliers.
The sash is lifted up and carefully removed from the lower hinge.
The scissors are installed in their seats (in the grooves, on the fixation elements).
The handle is turned. If it remains blocked, release the lock.
The frame is installed following the steps in reverse order. If the pin is tight, you can lightly tap it with a hammer.

Advice. There are rotary and tilt-and-turn fittings, but the principle of removing the sash from its hinges is as similar as possible. If there is enough space above the double-glazed window frame and the slopes do not interfere, then the “scissors” can be adjusted without dismantling.

The sash is open in two positions

The problem of “window sash falling out” can be caused by user inattention or errors during the operation of the double-glazed window: when the handle is turned up while the window is open. In this case, the sash is tilted in the open position. This activates the handle lock, so it is not possible to close it as usual. The window remains open and in the ventilation position at the same time.

Algorithm for eliminating the problem and returning the opening mechanism to its original position:

Set the “ventilation” position – move the lever vertically up.
Carefully, without excessive force, press the top of the sash against the frame - everything should fall into place.
Holding the sash, release the lock and move the handle to the “fully open” position.

Why does the window close incorrectly?

The factors that caused this situation are in many ways similar to those described earlier, but have their own specifics. Let's consider the main ones:

Next, we will consider various situations, what to do if the plastic window does not open or does not come off completely, or does not close in various modes. We tried to give you practical recommendations to solve these problems.

Mechanical damage to the element

The inside of the handles may have a broken locking ring (gear), which ensures interaction with the tilt-and-turn mechanism, or elements that secure it. The body itself or the base may crack, causing the handle to simply fly off.

Note! The pin breaks extremely rarely, but this is also possible. Breakage is especially typical for cheap primitive products installed by developers in new buildings, since their parts are often made of silumin and plastic.

The network describes a case when the handle of a balcony window was turned with some effort, but it did not open/close. The user drilled it out, and it turned out that one of the two rods that engage the locking ring was turned to the side, that is, there was originally a factory defect.

For some time the engagement occurred, but then the silumin became thinner, and the described breakdown occurred. In this case, it turned out that the handle can only be removed by unscrewing the screws at the end of the sash (usually they should be located on the front side of the frame). That is, if the window were stuck in the closed position, the handle would have to be drilled out to remove it.

Replacement:

Turn the handle to a horizontal position and open the window. If the bolt system is not damaged, this can be done without much effort. If the sash is jammed in the closed position, and the handle simply turns, then the gearbox is broken, the malfunction is more complicated (see the section “It turns, does not transmit commands”).
Pull back and turn the decorative cap - the bolt heads will be exposed.
Unscrew the screws and remove the entire structure along with the tetrahedral pin.

You can try to repair the pen body using the algorithm shown below, but most likely it will not last too long:

Window jammed: emergency help

A common mistake made by users whose plastic window is jammed and the handle is completely motionless is an attempt to correct the situation by applying force. There is no need to do this; the problem is unlikely to be solved, but the risk of breakdown increases. If the window does not open, be prepared to call a repair team. Although in some situations you can cope on your own.

Basic recommendations for adjusting locking mechanisms:

When installing "Ziegenia" or "MACO"

Remember, the sash must be positioned strictly vertically.

When installing "Roto", "Winkhaus"

Let's consider the procedure for using Roto and Winkhaus locking mechanisms:

It happens that when the sash is open, the handle gets jammed. Pressing it tightly to the top will help solve the problem, after which try turning it horizontally.

Possible difficulties and errors during repairs

Common mistakes and what people most often forget to do when repairing the opening mechanism of a PVC structure:

Repairs should be made after opening the window, if possible for the specific nature of the damage. If jamming occurs when the window is closed, then the damage will be much more difficult to fix - access to the scissors and other elements will be blocked.
When replacing the handle, you need to select a model with a pin of the same length and thickness, as well as with the same fastening, with the identical position of the fasteners corresponding to the holes in the frame.
A common mistake is putting excessive pressure on the handle, using force when it jams.
Sometimes it is necessary to apply increased forces, for example, when there is a tight movement, but they should not be excessive, in which there is a risk of breakage. If you feel that it is jammed tightly, then under no circumstances should you use force - this, therefore, will not help.
Failure to clean the mechanism before lubrication.

Some symptoms of a pen malfunction are similar, so problems arise in determining the causes. You should check, starting from the simplest to the most complex: for example, first inspect for dirt, then remove the handle with the pin and make sure that all elements, especially the locking ring and rods, are intact.

Can it jam?

Most often, a situation occurs when, when opening/closing the ventilation mode, the handle “wedges” without turning completely. There are also situations, although much less frequently, when in ventilation mode the handle does not move to the desired position.

If such a problem occurs, it is not recommended to make sudden manipulations with the PVC window; you should not apply force - this can lead to final breakdown of the structure.

This malfunction occurs when the “scissors” - one of the elements of the fittings - jumps out of the grooves. If the window handle is jammed, it is not recommended to make sudden movements. First of all, you just need to close the window.

The shutter opens simultaneously in 2 modes - swinging and ventilation

Double opening is caused by a sash that is poorly pressed to the frame during closing. Because of this, the mechanism gets stuck in an intermediate position - between full “opening” and “ventilation”. You can fix the problem by moving the handle to the side and leaving it in a position parallel to the window sill. You should also squeeze the lock on the sash. After this, the sash is pressed tightly against the frame, and the handle instantly lowers down. You can verify that the mechanism is working by watching how the window sashes move in both positions.

Where can all this be found?

The leading manufacturer of window fittings, Roto*, offers a choice of:

for removable rosette handles in 8 colors;
window handles with a key of the Rotoline* and Roto Swing* series in various colors;
“child locks” Roto - quality and reliability are confirmed by the Certificate of Conformity for safety locks for window blocks made of polyvinyl chloride, wooden and aluminum profiles in accordance with GOST 23166-99, GOST 5089-2011
Roto TiltFirst* hardware kit with child handle

Main window adjustment points

To understand how to repair a plastic window, you need to know how it works. Almost any plastic window installed in an average apartment has three levels (or planes) of adjustment. This, first of all, makes it possible for the window part itself to be in an optimal (tightly pressed and not skewed) position to the frame, plus it ensures a reliable connection to the seal. All the “magic” is in the loops. The lower hinge is responsible for the vertical position of the sash and the lower vertical angle; the upper part of the sash is responsible for adjusting the upper hinge; The clamping force directly depends on the eccentrics. That's all the tricks.

Plastic window

The main problem here is the well-known displacement of the mechanism, which does not allow the sash to open and close correctly, or to do so at the desired angle. This is the so-called “sagging”, due to which the window touches the frame and may eventually simply stop closing at all.

Related article: Standard distance from floor to window

In this case, we are interested in window awnings. We do not take the lower one into account; it does not play any role here. You need to open the window and at the very top of the window find two screws that are adjustable using a hexagon. We loosen the lower one slightly, and work with the upper one: using a hexagon, we turn it back and forth until it is in the desired position.

Do-it-yourself repair: the blocker has failed

During operation, the window suddenly does not close from ventilation mode. The “blame” blocker is a small unit located in the handle. The problem is common. May occur due to:

sharp turn of the handle;
“washing out” the lubricant;
large amounts of dirt, dust, debris;
movement sash wear;
illiterate and inconsistent installation of the device;
"shrinkage" of the building.

For these reasons, it becomes impossible to tightly close the plastic window or switch it from ventilation mode to closed.

The plastic window lock is a weak part; it breaks most often

If the blocker is broken, how to fix it? Pay attention to the brand of the part. It is indicated on the metal lock:

The “AUBI” type is repaired like this: at the end of the unit, in the place where the handles are fastened, there is a plate with a metal spring. She is very thin. Press it down to press it against the seal and turn the handle to open mode. Now close as usual;
types “Maco”, “Winkhaus”, “GU” and others have a similar sequence of the repair process. There is no plate with a spring at the end, but there is a metal tongue. You need to press it vertically and at the same time press on the window block so that it presses against the frame. Then turn the handle to close the sash.

It happens that there is no blocker in the system. Then simply return the unit to closed mode and turn the handle.

Ventilation using valves

The device is mounted directly on the window profile.

There are two categories of valves:

The ventilation valve determines the climatic conditions in the room and independently makes adjustments based on the humidity and air temperature in the room. There are models of fittings that are similar in functionality, but more compact. To make the auto valve less noticeable, installation is carried out directly into the window handle.

with manual control

In manual mode, the valve is adjusted, adjusting the air flow as needed.

It is easy to normalize air exchange in a building with modern PVC structures; appropriate modes and fittings have been developed for this. When micro-ventilating, slight difficulties may arise with closing the window sash. However, they are often caused by trivial reasons.

Most problems can be easily resolved by adjusting the mechanism and installing the window in the correct position. We hope that our recommendations will help you fix the problem in a matter of minutes.

A plastic window is broken: how to fix it yourself

Plastic windows have become part of modern apartments and houses. They look stylish, are airtight and durable, and block noise from the street. The price of the design is affordable. You can do the installation yourself or entrust this task to professionals. One system will cost approximately 10 thousand rubles. The cost is increased by additional options - micro-ventilation, supply valve, “built-in” blinds and Roman shades, tinted glass that blocks direct sunlight from entering the room. The design lasts up to 50 years with proper care: lubrication of parts, checking and replacing faulty fittings, treatment from dirt and dust. But sometimes the system suddenly fails, for example, a plastic window does not close... It is not difficult to repair plastic windows with your own hands. It is important to determine exactly what is causing the problem.

Let us note in advance that if you want the plastic windows installed for you to last for at least a couple of decades, then you need to choose the right company for installing window structures. For example, in Moscow such an organization is a production one. More detailed information about it can be found on the website https://www.svetokna.ru/. Let us only note that for the past 19 years it has been pleasing its customers with high-quality services and reliability.

Related article: Simple platbands for windows in a wooden house