Heater for UAZ Patriot: replacing the fan, cabin filter, thermostat. Modernization of the cooling system of UAZ Patriot of any model series

The climatic conditions characteristic of most of Russia require any vehicle to have a reliable and efficient heating system. Unlike a fan, the stove should not cool the air in the cabin, but heat it. Common to both devices is the use of a ventilation system, which is a means of delivering cold or heat. Let's look at the features of the heater of the domestic UAZ Patriot SUV, including some points regarding its main shortcomings and how to eliminate them.

Diagram and design of the stove in the UAZ Patriot.

Purpose

The main function of the stove on the UAZ Patriot is to heat the interior, and it also helps to cope with the problem of glass fogging, which is very important in the cold season. On versions released before 2012, only a front heater was installed, and starting from 2012, the Patriot was equipped with a second additional heater, this helped increase the comfort of the SUV in winter. Thanks to the additional heater, the rear of the cabin became better heated. In addition, depending on the configuration, a domestic SUV can be equipped with climate control, thanks to which absolute comfort is achieved in summer and winter. The only drawback of the air conditioner is the increase in fuel consumption during operation of the ventilation and heating system.

The purpose of the UAZ Patriot stove

In the cold season, not only heating of the interior itself is required - as you know, the problem of fogging of car windows becomes most acute with the onset of cold weather. The UAZ Patriot heater is a device that allows you to combine both functions: heat and deliver warm air to the area of the windshield and side mirrors, as well as heat the driver and passengers of the SUV. Note that the UAZ Patriot heater circuit, starting from 2012, involves the use of two heaters - an additional heater is designed to heat the rear row of seats.

The need for such a significant modification of the heating system was due to insufficient heating of the rear of the car, which limited the operation of the SUV in severe frost conditions. The installation of an additional heater made it possible to significantly improve the heating of the rear of the SUV, since previously passengers complained that warm air practically did not reach the rear row of seats.

Control system

The stove and air conditioning system are regulated using a control unit (control unit), which includes a system of regulators, thanks to which various tasks of the following nature are controlled and performed:

The stove operating mode can be set either manually or automatically;
The Control Unit reads information from the temperature sensor located in the SUV's interior;
Thanks to a special regulator, the control unit can operate in several speed modes;
The maximum current consumption of the stove is 14 Amps;
The air blower operates from the power supply.

This control unit is an electronic device with three regulators with different operating modes, and a computer reprogramming system. The control unit is located in the central part and in case of any malfunctions, it can be removed.

Stove on a UAZ Patriot

A special heater is installed under the dashboard in the UAZ Patriot, which is designed to warm the cabin, and for rear row passengers, an additional heating system is installed in the seats for the same purpose.

The temperature, intensity, and direction of air flows are regulated using switches located in a special control unit for the ventilation, air conditioning and heating system.

In the article we will look at how the UAZ Patriot stove works and what design features it has.

Purpose

The main function of the stove on the UAZ Patriot is to heat the interior, and it also helps to cope with the problem of glass fogging, which is very important in the cold season.

On versions released before 2012, only a front heater was installed, and starting from 2012, the Patriot was equipped with a second additional heater, this helped increase the comfort of the SUV in winter. Thanks to the additional heater, the rear of the cabin became better heated.

In addition, depending on the configuration, a domestic SUV can be equipped with climate control, thanks to which absolute comfort is achieved in summer and winter. The only drawback of the air conditioner is the increase in fuel consumption during operation of the ventilation and heating system.

Control system

The stove operating mode can be set either manually or automatically;
The Control Unit reads information from the temperature sensor located in the SUV's interior;
Thanks to a special regulator, the control unit can operate in several speed modes;
The maximum current consumption of the stove is 14 Amps;
The air blower operates from the power supply.

Heater fan

In stoves, the fan is replaced in rare cases, for example, if work occurs under increased load, or if moisture gets on the parts, and also when it is impossible to make repairs. Replacing it is not difficult; difficulty may arise when removing the front console.

The fan and motor of the UAZ Patriot heater change as follows:

The console is removed;
The fan is removed;
The fan and motor are replaced together;
Assembly.

Fuse system

At the bottom of the left side of the torpedo, number 21, there is a fuse that in parallel protects the electrical circuit of the cigarette lighter and stove; it has a maximum current conductivity of 25 Amperes.

Flushing the system and repairing the damper

To clean the stove from various blockages and increase operating efficiency, it should be washed periodically; to do this, you need to do the following:

On the engine shield, a water pump or an old pump is connected to the fitting; a drain hose can be used for these purposes;
First of all, the system is flushed using running water; to do this, a pump is lowered into a bucket of water to flush the system;
Various contaminants and oxidations are removed. For better cleaning, you can use special detergents;
After washing, the remaining foam is removed; for these purposes, you can use four sachets of citric acid, which are diluted in boiled water and passed through the entire system.

After the work is completed, the system is washed with clean water, after which coolant is added.

It may happen that the heater damper stops working, the reason may be the following:

The micro-reducer, which controls the damper drive, is jammed;
The control unit does not work.

Thanks to this damper, the hot and cold air supply modes are switched. Most often, it does not work due to the fact that it does not open or close completely, as a result of which the device does not function correctly.

Source: https://djeeprus.ru/uaz/elektrooborudovanie-uaz/pechka-na-uaze-patriot

Heater fan

The fan and motor of the UAZ Patriot heater change as follows:

The console is removed;
The fan is removed;
The fan and motor are replaced together;
Assembly.

Fan replacement

Next, to get to the fan you need to remove the glove compartment. It can be removed very easily; just remove two fasteners from the bottom inside the glove compartment on each side and the glove compartment can be removed. After removing the glove compartment, we will immediately see the motor that turns the fan.

Well, to get to the motor you need to unscrew the plastic frame on which the glove compartment is attached. When cold weather sets in, the interior of the UAZ Patriot is not warm enough, let's look at what causes this.

Replacing the thermostat

The next reason is that the thermostat sticks - this is a common problem in UAZ vehicles; when the car warms up for 10 minutes, the interior does not heat up. Accordingly, the thermostat needs to be changed and at the same time we flush the engine cooling system. Moreover, according to many experts, cars that come from the factory are filled with very low quality fluids. It is better to rinse with FELIX red liquid. It is inexpensive and pours directly into water. When going through all the procedures, we measure the temperature from the hot air deflector, or with a regular bath thermometer. The difference between the measurements before and after is 15 degrees.

The fan and motor of the UAZ Patriot heater change as follows:

The console is removed;
The fan is removed;
The fan and motor are replaced together;
Assembly.

Replacing the cabin filter

To eliminate this, we started by replacing the cabin filter. After replacing the filter, the air flow supplied into the cabin through the fan increased. But at a strong negative temperature, this was not enough. As we know, our UAZ Patriot constantly lacks air circulation; in order to eliminate this, we removed the membrane under the hood that was preventing the passage of air.

Heater motor UAZ Patriot

A car of any brand intended for use in areas with temperate and cold climates is equipped with a stove. Such vehicles also include cars produced at the car plant in Ulyanovsk.

UAZ Patriot

Most car parts and components are subject to wear and tear. The UAZ Patriot stove motor is no exception. In case of breakdown, all parts of the heating device can be replaced with your own hands.

Design features of the heater fan

The stove is designed to heat the interior of the UAZ Patriot and windshields. On the latest SUV models, an additional unit is installed that pumps heated air into the rear of the car.

The heater on some cars is equipped with a climate control system. It regulates the operation of the device in summer and winter. In everyday conditions, the setting is carried out using the control unit.

Modes are set automatically and manually.

The stove consists of two main components:

fan blades;
electric motor

The fan forces heated air into the main pipe under the action of an electric motor, which uses the energy of the vehicle’s on-board network.

The heating system is started by a special regulator located on the dashboard. High-strength plastic is used to make the blades. The shape of the fan resembles an airplane turbine. This design helps to achieve better aerodynamic capabilities. The fan rarely breaks and does not require replacement.

The heater motor is a weak point in the interior heating system, so SUV owners need to be able to repair it or install a new one.

Over time, insect remains, particles of street debris and dust accumulate on the blades. This increases the load experienced by the engine.

As a result, the current in the circuit increases, the parts heat up, and there is a risk of jamming the working shaft of the electric motor.

The motor power supply includes:

generator;
battery;
egnition lock;
switch;
fuse box;
resistor;
motor.

The generator produces electrical energy while the main engine of the car is running. The power unit is started using the battery.

The heating system can operate from a battery, but it consumes a lot of electricity and the current source quickly discharges. A dead battery will not allow you to start the engine.

The switch regulates the functioning of the heater and allows you to smoothly change the number of revolutions of the working shaft. Due to this, the amount of warm air supplied increases or decreases.

The electric motor of the heating installation on the UAZ Patriot is designed for 1000 hours of service. After this period, the risk of breakdown increases sharply. Therefore, the driver needs to know the causes of malfunctions, be able to find them and deal with them.

Types of malfunctions of the electric motor of the stove fan

The occurrence of hums and whistles, creaks and rattles in the stove is the most common drawback in the operation of the heating system of a car. After this, breakdowns begin. Disadvantages include clogging of fan blades with street debris and failure of bearings. It is necessary to immediately remove and clean the electric motor and the fan that blows warm air.

After cleaning, the rubbing parts are lubricated with Litol 24.

Other faults:

damage to wires;
short circuit of the positive wire going to the stove;
failure of the switch in the cabin;
wear of brushes or breakage of motor windings;
resistor burnout;
stove damper failure.

If the wires are damaged or broken, the fan of the heating device cannot start. A breakdown of the central switch leads to a failure of the stove or to operation in the only possible mode.

A burnt-out resistor causes the fan to operate at maximum shaft rotation speeds in any switch position.

If the damper fails, the cause may be a malfunction of the control unit or micro-gearbox.

To eliminate breakdowns, you need to correctly diagnose their cause.

If the wires are faulty, they are replaced with new ones. When choosing, you need to pay special attention to the condition of the insulation. The burnt resistor or switch is replaced with a part with similar parameters. The fan is rearranged complete with the motor.

Replacing the motor

Often, UAZ Patriot owners encounter problems with the stove unexpectedly, although the instructions indicate the operating time of the device. If the fault is correctly identified, it can be eliminated without much difficulty. The most difficult operation is replacing the engine. It is removed in the following order:

it is necessary to de-energize the car;
remove the glove compartment;
unscrew the screws securing the air duct;
go to the engine compartment to continue work;
open the hood;
remove the washer reservoir;
remove the water pump;
unscrew the 3 bolts securing the stove and dismantle it;
disconnect the terminals from the fan shaft;
release the clamps with a screwdriver and remove the fan from the housing.

De-energizing the SUV is simple: you need to remove the terminals from the battery. After removing the fan, carefully inspect it, clean it of foreign objects, find problems and try to fix them. Often repairs involve removing debris and dust.

Sometimes it is necessary to clean and tighten oxidized contacts and restore broken wires. If the reason is hidden in the electric motor, it is necessary to completely replace it.

Instead of a standard unit, a more durable and reliable Delphi motor with a fan will be suitable.

After completing the replacement work and performing a preventive inspection of all heater parts, the engine kit with blades is installed in place. Installation operations are carried out in reverse order.

We must not forget about the possibility of the on-board stove operating as a cooling device in the summer. This method is used when the car does not have a sunroof or air conditioning.

Design Features

Like most other passenger cars, the heating device of the UAZ Patriot is a so-called liquid-type interior heating system, which involves combining the heater with the vehicle’s cooling system. The design of the 2007 UAZ Patriot heater completely repeated the design of the stove of its predecessor, the UAZ-31622, but the very next year the car received air conditioning and a modified heating system. Its main component was the heater radiator, mounted under the center console and enclosed in a plastic case of rather complex geometry. The connection between the cooling and heating systems is carried out through rubber hoses; dampers and a tap are used as separating elements.

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The design of the UAZ Patriot stove from 2012 requires the presence of two heat exchangers, the heating of which is carried out using hot antifreeze supplied from the cooling system of the power unit. Heater radiators are a system of thin tubes with a large surface area, which ensures intense heat exchange with cold air in the cabin.

The heat exchanger includes a centrifugal fan that can operate in various modes. It is the fan that is responsible for delivering air to the heat exchanger, as well as for removing already heated air into the cabin, for which special air ducts are provided in it. After cooling in the radiator, the antifreeze enters the cooling system through the outlet hose, closing the heater operating cycle. The heating mode is turned off using a tap, which blocks the access of hot antifreeze to the stove radiator. The tap is usually turned off when it gets warm, when there is no particular need for constant heating of the interior.

As you can see, the design of the stove is quite simple. Note that to facilitate the passage of coolant through the cooling system of the car’s power unit, an electric pump is used, thanks to which warm air begins to flow into the interior of the UAZ Patriot within a few minutes after starting the engine. The disadvantage of using such a heating system scheme is the inability to function when the engine is turned off - when the car is parked, in order to warm up the interior, you have to periodically start the internal combustion engine. Note that the design of the 2009 Patriot heater with air conditioning assumes the presence of only one heater, but some configurations had two stoves.

Design

The UAZ Patriot uses a heater in the form of a radiator, but not the same as the main cooling radiator in front of the engine, but smaller. In the UAZ Patriot, the heater radiator is installed in front under the instrument panel (dashboard). Inside it there are numerous aluminum plates, near which hot antifreeze or antifreeze circulates. There is a fan above the radiator that blows air around it. Also, the design includes a special damper that regulates the ratio of hot and cold air supplied to the cabin.

There may be two heater radiators in the UAZ Patriot in some trim levels with air conditioning. Although, in most cases, the design provides only one radiator. The entire set of parts can last a long time, the Patriot can travel more than 100 thousand kilometers, and the heater will quietly perform its function. However, this is true under one condition - timely replacement of the coolant is necessary. Although a breakdown may not necessarily occur because of this, a defective product is no exception.

Symptoms of a problem

The heater radiator will have to be replaced if a characteristic smell of antifreeze is noticed inside the interior of the UAZ Patriot. It may appear due to coolant leakage from cracks in the radiator. Cracks can occur from impact, careless installation, or over time from the formation of oxides. The leak should be repaired as soon as possible, otherwise a significant part of the coolant may end up on the floor in the cabin.

Control block

The heater operating modes are controlled via the heater control unit located on the central panel of the SUV. The control unit includes a number of regulators that change the operating modes of the ventilation/heating system. The tasks of the UAZ Patriot heater control unit include:

changing the operating modes of the stove, which can be done either manually or automatically,
reading and interpreting the readings of a temperature sensor installed in the interior of an SUV,
using the regulator, changing the speed mode of the heater.

According to the manufacturer, the maximum current consumption by the heater is 14 A. On updated UAZ Patriot models (since 2012), the control unit is equipped with three regulators. You can control the operating modes manually using the control knobs, but it is also possible to program the heating system control unit. In case of problems, the control unit can be easily removed from the dashboard.

The UAZ Patriot stove device (its electrical part) is protected by a separate fuse designed for a maximum current value of 25 amperes. This fuse is located in the mounting block (inside the SUV, under the dashboard on the left side). Its serial number is 21, and the combustion of the fuse also blocks the operation of the cigarette lighter (it is combined with it).

Additional heater

The addition of a second heater to the UAZ Patriot's heater circuit made it a truly comfortable car, capable of adequately withstanding the Russian winter in all its manifestations. The standard heater was located deep in the torpedo in its central part, providing warm air to the front of the car. An additional heater was placed under the front passenger seat, which solved the problem of poor heating in the rear of the cabin.

Thus, the UAZ-3163 was modified and brought into line with the current requirements of the moment. Such a serious change led to an increase in the amount of coolant in the system, and among the additional options, heated rear seats appeared, which turned out to be the first such functionality in the domestic automotive industry.

How to fix problems if the UAZ Patriot stove does not heat up

A stove in the interior of a modern vehicle is a necessity, not a luxury item. Without exception, all car manufacturers install stoves to heat the car interior. These devices are especially important when operating in Russian latitudes.

UAZ Patriot stove

The domestically produced UAZ Patriot all-wheel drive SUV is also equipped with a stove for heating the interior and blowing the windshield, which helps remove moisture from foggy windows. In summer, the heater is no longer used in the interior heating mode, but as an additional source of ventilation if there is no air conditioning in the cabin.

Sometimes it happens that the UAZ Patriot stove does not heat up. What needs to be done? This will be discussed in this article.

Solving the problem of a non-working stove

The stove will blow perfectly only when it is fully operational. UAZ Patriot went on sale in 2005. Until 2012, cars were equipped with heaters of the same design. Since 2012, UAZ has made some changes to the design of the Patriot, as well as to the interior of the cabin. Among other innovations, another stove was added to heat passengers.

Over a long period of operation of an SUV, it happens that on a Patriot the stove blows in the opposite direction. In severe frost, when the temperature outside the car reaches -30 o C, the front radiator cannot cope with heating the cabin, and the passengers in the rear sofa freeze. Some people began to complain to service centers located throughout the country that the UAZ Patriot stove was not blowing well. The designers added an additional radiator located under the front passenger seat.

Club "Skillful hands UAZ Patriot"

Many owners of early UAZ Patriot models decided to install an additional radiator in the cabin themselves. The heat source for the heating stove radiator is antifreeze from the cooling system. For self-installation you will need: a radiator, a fan, a shut-off valve and several hoses for supplying warm coolant. The efficiency of the interior heater reaches about 93%.

Heater control regulators

The UAZ Patriot heater design with a new panel includes three regulators located in the central area of the instrument panel. With their help, you can adjust the heating parameters of the SUV's interior. The purpose of the first regulator is to change the temperature of the air flow directed into the cabin. The switch has the following modes:

maximum cooling used in summer, when the temperature outside the car rises above 25 degrees,
normal cooling, designed to provide comfortable airflow at an outside temperature of 15 - 25 degrees,
ventilation mode is used mainly in the off-season and is designed to ensure a cool temperature in the cabin,
normal heating, used when the thermometer outside the car drops below zero,
maximum heating is used when it is frosty outside (minus 10 degrees and below),
The window blowing mode is designed to eliminate fogging of the windshield and side windows.

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The purpose of the second regulator is to ensure the required direction of airflow. Has the following modes:

airflow in the central area of the SUV interior,
supplying warm/cold air flow to the lower/central part of the car,
blowing only the lower half of the cabin,
direction of air flow into the lower area of the cabin and at the same time onto the windows,
supply of heated air to the side/windshield to prevent fogging.

The third regulator is used to regulate the speed of air flow supplied to the cabin.

Note that on some updated cars, the connection diagram for the UAZ Patriot heater did not allow for smooth regulation of the airflow intensity, that is, the third regulator had two positions: turn the heater on and turn it off. This flaw was quickly corrected, and on those machines where a similar bug occurs, it can be corrected by reflashing the heating system.

Structural features

UAZ Patriot is equipped with a liquid-type heating system, which is part of the engine cooling system. The main heating role is played by the heater radiator, which is housed in a special plastic case located under the center console. The heating and cooling systems of the engine are connected to each other using rubber hoses, and they are separated by a tap and dampers. Below is a general diagram of the interior heating structure.

This is how the coolant circulation process in the heating system of an SUV looks schematically. Heat exchangers of heaters are shown, from which two tubes are removed. One tube is the supply tube, through which heated antifreeze is supplied from the engine. This antifreeze passes through the heater core and thereby warms it up. The stove is not only a heat exchanger, but also a centrifugal fan that operates in several different modes. With the help of a fan, air is forced through the radiator, heated, and then supplied to the cabin through special air ducts. The cooled liquid from the heater radiator flows back into the engine cooling system through a special outlet hose.

The design of the heater provides for the installation of a tap, which is used to shut off the supply of hot air to the heater radiator, and, therefore, to the interior of an Ulyanovsk-made SUV. After all, using the stove in the summer is not relevant, so the engine cooling system is separated by a special heater tap.

Air ducts and heater control unit

An electric pump is installed in the heater design, which is designed to quickly circulate coolant through the engine cooling system. In this case, literally 2-3 minutes after the engine starts, warm air is supplied to the cabin. This heating system is the best device, but it also has its drawbacks. More precisely, there is only one drawback - the impossibility of heating when the engine is turned off, which necessitates the need to periodically start the engine to warm up the interior of the body.

Ulyanovsk-made UAZ 3163 cars produced before 2012 are equipped with one heater, but depending on the configuration, they may have two stoves. Below is a schematic representation of the design features of such a unit.

The second stove is most often located under one of the front seats or between them. An additional heater allows you to deliver warm air not only to the front passenger and driver, but also to passengers sitting in the rear. The presence of two heaters is not in vain, because the UAZ Patriot has an impressive interior volume, which is problematic to warm up using one heater. Therefore, most SUV owners install an additional heater themselves.

Heating and ventilation scheme

So, we looked at the principle of operation of the heater on the UAZ Patriot. Now let's look at how warm and cold air enters the car interior. To do this, you can use a diagram that shows all the main structural elements of the device in question.

Approximate air flow path

Number 1 shows a blower fan, with the help of which cold air enters the heating system. If the supply valve is open and coolant circulates through the system, then radiator 7 heats up. The air pumped by the fan, passing through it, warms up and enters the car interior through air ducts.

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Number 4 shows a damper that is used to close the air duct for heating the feet. The design of the device in question also includes a special damper 8, which is used to close the air duct to the chamber with the radiator. Thus, the air pumped by the fan immediately enters the air ducts. Damper 8 on the car is presented in the form of a regulator on the center console. In the photo below, this regulator is on the left.

To summarize, the interior heater is a network of important devices. If one of the components of the heating structure fails, the functioning of the stove is disrupted. In this case, you will need to find the problem and fix it, which is quite easy to do yourself. But you can learn more about the types of heating faults in an SUV and the replacement of component parts from this website.

Design features of the device

The UAZ Patriot car first rolled off the production line in 2005, and from that moment on, models up to 2012 were equipped with one heater. Since 2012, when the Patriot received major upgrades, another stove, the so-called rear one, was also added to the interior. It made it possible to heat the interior of the cabin mainly for passengers sitting in the rear seat.

The front stove did not fully cope with the function of heating the cabin, so in severe frosts, passengers sitting in the back had to freeze. But the driver and front seat passenger were quite comfortable. The second or rear stove on the UAZ Patriot SUV is located between the front seats, and the air from it is supplied directly to the rear of the cabin. This made the UAZ Patriot SUV much more comfortable.

Many owners of Patriots before the 2012 model year equipped their SUVs with an additional heater themselves. The heaters on an SUV are radiator-type, and the source of heat is antifreeze (antifreeze) coming from the car’s engine cooling system. This type of heater is the most productive and economical, because the efficiency of such a system reaches 93%.

Let's look at what are the main types of front and rear heater malfunctions that can appear on an SUV, why they occur and how to deal with them.

Heater electric motor

When the stove stops working altogether, but the fuses are intact and the wiring is in excellent condition, the reason will probably lie in a failed electric fan of the UAZ Hunter heater. It will need to be removed through the passenger compartment from the front passenger's foot side. There is nothing complicated in this procedure, since UAZ engineers did not hide the electric fan too far. The entire task of removing and replacing the electric heater motor on a Hunter comes down to performing the following procedures:

Disconnect the negative from your battery to avoid working under voltage. This is extremely dangerous and undesirable;
Remove the heater cover and rotate the impeller on the fan motor so that the mounting screw is accessible;
Unscrew this screw;
Next, disconnect the block with the wires of the electric fan of the heater of your SUV;
Using a 10mm wrench, you will also need to unscrew the bolt that holds the wiring harness bracket;
Unscrew 2 more bolts intended for fixing the electric motor on the body of the furnace equipment;
Now you can remove the electric motor itself;
Unscrew a couple of stud nuts and remove the mounting washer from the motor.

In some cases, you can count on the fact that minor repairs will restore the functionality of the old electric fan. But this does not always help and not in all situations. If the motor is badly worn, the brushes are worn out, or the housing is damaged, there is no point in trying to repair the device. It would be much more correct to install a new motor and assemble the unit in the reverse order. Don't forget to check the condition of the impeller itself. Sometimes you have to change it because of damage and defects. Act based on your specific situation.

Car heater fuse

The heating circuit circuit is reliably protected by a fuse. The fuse link can withstand a maximum current of 25 A. The protective component is located in the mounting block, which can be found at the bottom of the panel on the left side. The serial number of the insert is “21”.

Note that the fuse has one more function - to provide short circuit protection to the cigarette lighter circuit. When the insert burns out, the stove does not work at all. The driver immediately feels the lack of warm air supply inside the UAZ Patriot interior. The first test step is to monitor the protective circuit. A tester will help in this matter. If a faulty fuse is detected, then we can safely replace it with a new analogue and maintain the required current value (25 A)!

How to clean the stove in a UAZ Patriot?

So, if the stove does not work at all, you need to wash it. Quite often, the efficiency of the heating system decreases due to a clogged circuit. Flushing is necessary to remove various debris from the lines and heater.

Next, we’ll figure out how to properly clean the stove. We note here that this important procedure can be performed without dismantling the device. It is recommended to periodically resort to the flushing action in order to avoid a moment when the stove does not work completely.

So, let's start rinsing.

We take an old water pump, which we connect to the circuit by connecting it to the fittings located on the engine panel. Here you will need to use a drain hose.
First, rinse the circuit with plain water. To do this, fill a bucket with liquid, where we place the indicated pump. We start the pump and observe the process, paying attention to the consistency of the liquid flowing from the drain hose.
To increase the efficiency of the flushing procedure, it is recommended to use a cleaning agent specially made for car cooling circuits.
Upon completion of washing, remove the remaining foam. Citric acid will help here. We take 4 bags of this product, mix it with boiled water and “run” it along the entire circuit in the same way. We determine the amount of water ourselves.
Now fill the container with clean water and rinse the system again.
After making sure that the circuit is clean (we can see it by the consistency of the draining liquid), we fill the engine cooling system with antifreeze in sufficient quantity and to the required level.

Damper repair

It may happen that the heater damper stops working, the reason may be the following:

The micro-reducer, which controls the damper drive, is jammed;
The control unit does not work.

Thanks to this damper, the hot and cold air supply modes are switched. Most often it doesn't work. Due to the fact that incomplete opening or closing occurs, as a result of which the device does not function correctly. Incorrect operation of the damper is the weak point of the UAZ Patriot. When moving, the plastic gearbox constantly jams or simply breaks.

After all the washings, you can check the impeller animometer and measure the flow of hot air.

Let's sum it up

We start the engine, warm it up and observe the performance of the stove. If all manipulations are performed correctly, the heater will “reward” the owner of the UAZ Patriot with a powerful hot air stream escaping from the interior panel deflectors.

Sources

https://CarForDrive.ru/uaz/elektrooborudovanie-uaz/pechka-na-uaze-patriot
https://djeeprus.ru/uaz/elektrooborudovanie-uaz/pechka-na-uaz-patriot-zamena
https://mosautorent.ru/avto/ustroystvo-i-shema-otopitelya-uaz-patriot.html
https://prohodimets.ru/dvigatel/sxema-otopleniya-salona-uaz-patriot.html
https://Uaz-Patriot.info/elektrika-i-tormoza/otopitel-pechka.html