Do-it-yourself Oasis geyser repair

1 Breakdown of the heating column

Even the most expensive equipment after several years of operation can fail or even break down so that it cannot be repaired. The reasons for this can be very diverse, sometimes a breakdown occurs due to improper operation of a gas installation, poor-quality assembly of the device, a decrease in device performance, etc.

If the homeowner does not have experience in this area of ​​\u200b\u200bactivity and the proper tool, then it is better to call a specialist at home.This will save time, protect yourself and your household, because poor-quality repairs or neglect of a malfunction can result in ignition, poisoning by combustion products, an explosion and other troubles.

Specifications HSV 8910-00.02

If you are interested in Astra gas water heaters, then you should consider several models at once so that you have the opportunity to make the right choice. Among others, the HSV 8910-00.02 model, which is manufactured in Russia, is on the market. Its power can reach 21 kW. The design is equipped with an open combustion chamber and manual ignition.

Productivity on hot water supply makes 12 l/min. The supply water may have a temperature that varies from 35 to 60 °C. During operation, the column consumes natural gas in a volume that is equal to 2.3 m 3 / h. The maximum water pressure can be 6 bar. The lowest operating water pressure is equivalent to 0.5 bar.

Gas connection is carried out using communications that have the following parameters: 3/4 inch. Hot and cold water connections are made using pipes with a diameter of 1/2 inch. The diameter of the chimney reaches 120 mm. If you are considering Astra gas water heaters, then you should definitely be interested in their dimensions. As for the model described in the section, its dimensions are 700x372x230 mm. The equipment weighs 15 kg.

What to do if the geyser does not turn on when the water is turned on (video)

A geyser is a popular water heater, which, like any other, is prone to breakdowns.The reasons for the refusal of the operation of gas water heating equipment are often associated with the wear of the elements of the water intake unit of the column, low pressure in the water supply system, and the discharge of nutrients. Most problems of this kind can be fixed without the involvement of specialists. The main thing is to correctly identify the malfunction and carry out any repair work, after turning off the water and gas supply.

Diaphragm problems

The first sign of a breakdown: the gas water heater does not ignite immediately after turning on the water, but after some time. In this case, the water unit may begin to leak. Causes of malfunction:

• The diaphragm is stretched - a rubber membrane is located inside the node. The gasket is under constant pressure. Even high-quality rubber stretches a little and this leads to the fact that the burner ignites only with a large pressure of water. If the diaphragm is stretched, the "frog" does not leak.
• The diaphragm has broken - in this case, the geyser does not ignite the first time. Turns on when the faucet is opened again. Increases the duration of the operation. A characteristic sign that the membrane has become unusable is a water node leak.
• The diaphragm is coarsened - the gasket is made of elastic rubber, malleable enough to press on the stem with the necessary fluid pressure. With poor water quality, the membrane becomes coarse. For this reason, the water unit loses its sensitivity, the geyser does not ignite well.

On the rod in the water unit there are protrusions for moving the electric ignition actuation lever.If the column has stopped igniting from batteries (especially if the batteries have been changed recently), and when the DHW tap is opened, the stem is stationary, then the membrane is out of order.

Problems of the smoke exhaust system

Problems arise after several years of use, due to violations associated with the installation and placement of the water heater, as well as changes in the technical conditions of the room used for the boiler room. The main causes of failures in work:

• Lack of draft in the chimney is a common occurrence in old houses. Channels, especially those made of brickwork, collapse over time. The accumulated debris leads to a deterioration in air circulation and, accordingly, affects the operation of the geyser. Typical symptoms:
  1. the wick burns, but the main burner does not ignite;
  2. when the burner is turned on, cotton is observed;
  3. column spontaneously goes out.

  You won't be able to fix the problem on your own. You need to contact the service center for the maintenance of smoke channels.

• Installation of metal-plastic windows - PVC windows are airtight and prevent oxygen from entering the room where the column is installed. Lack of air supply causes the water heater to not work or turn off after 3-5 minutes of use. Finding the root cause of failures is easy. If the column works normally with the window open, then the malfunction is caused by a lack of oxygen, which leads to a deterioration in traction performance. To restore circulation, a special supply valve is installed on the metal-plastic windows.

You can check the presence of traction using a special hole provided in the column. In the normal state, circulation is felt even tactilely.The hand will feel the flow of air into the hole. You can bring a lit match. The flame of the flame will deviate significantly towards the column.

Why does the gas water heater turn on with a bang - boom

Repair of gas-consuming equipment should be carried out by a specialized organization with experience, an appropriate license and approval.

Scope of geysers Electrolux

Due to the almost irreplaceable properties and features of the devices of the declared brand, upon purchase you get a truly high-quality model, which is accompanied by only positive feedback from the owners. Nevertheless, heating equipment is used not only in domestic conditions, but also in many other industries (of course, more powerful models are used for such cases).

If you choose the right geyser, then one water heating will be enough to completely buy the whole family.

Geysers can be found for heating water in hospitals, workshops, gyms, swimming pools and many other places where workers are accustomed to hygiene. Typically, these devices handle large volumes, and for industrial conditions, models with maximum performance will be needed.

Protection system

It usually includes three main elements:

• ionization flame control electrode, responsible for the supply / shutdown of fuel supply when the burner is attenuated;
• draft sensor that blocks operation if there is no normal draft in the chimney;
• a hot water heating sensor that turns off the column if the water temperature reaches the maximum mark, which is dangerous for the heat exchanger to burn out.

These are the main elements of column protection, but there may also be additional ones, for example, a safety valve through which excess water is removed when the pressure in the system is exceeded, which is necessary to avoid malfunctions; a sensor that prevents the column from turning on if the water pressure in the system is critically low, and others.

Note that many new generation speakers can function properly even with low water pressure in the system. For example, geysers from and work properly even at a pressure of 0.1 or 0.2 bar. Do not hesitate, even if there is a slight pressure in the tap, the burner will work and the water will heat up.

Water heater protection system ensures safe use. Fears about a gas leak that could poison people, or an explosion of a column when the water is turned off prematurely, are a thing of the past.

Now you know how modern gas water heaters differ from water heaters that can still be seen in Khrushchev apartments. After getting acquainted with the main characteristics, you will have less doubts about choosing a column. If you still have questions, you can contact our managers by phone 8-800-555-83-28. We work to ensure that your purchase of a water heater is really pleasant and useful.

Every person who once decided to be independent of the central water heating system knows what a gas water heater is. Some put such speakers for completely different reasons, but everyone faces the same problem: when connected, the speaker does not always produce the results that are expected. There are also situations when work goes astray due to wear and tear, and subsequently repairs.Every year speakers with fully automatic settings become more and more popular, while not every person decides to switch to them because of the same reason. Due to the fact that the columns are extremely different, they only have the same setup principle, while all other steps may not have any similarities at all.

Scheme of installation of a geyser.

Setting up a geyser is a short, but rather painstaking process, which for the first time can take much longer than expected.

If the geyser goes out during operation

There is no traction.

If the window is tightly closed in the room, there is no inflow of fresh air, the column overheats and the automation is activated, which turns it off. If after that you opened the window, after 10 minutes you turned on the column, and it works, then the reason has been found.

The draft also decreases when the ventilation duct is clogged. To check the draft, you need to open the window and close the channel with a sheet of paper: if the sheet is held, then the draft is normal. You can also check it with a match lit near the exhaust channel: if the flame becomes horizontal, then the draft is good, if not, then you need to clean the channel.

Water node malfunctions.

The burner in the geyser can also go out in case of insufficient water pressure. The reason for this may be a clogged strainer. To clean it, you need to unscrew the water supply and clean the mesh.

Fix leaks in connections.

A tap must be installed on the pipe that supplies water to the gas column radiator, and a tap must also be installed on the pipe through which gas is supplied.All plumbing connections are made with union nuts, and sealing is done with rubber gaskets.

From the temperature difference and over time, the elasticity of the gaskets decreases - this leads to the fact that water flows from the joints. Gaskets need to be replaced periodically. If one gasket is not enough and water flows from the connection, then two gaskets must be installed.

We clean the igniter.

After some time, the igniter becomes clogged with soot, the flame of the wick decreases, and the gas coming out of the burner does not immediately ignite. If gas builds up, an explosion may occur. To prevent it, it is urgent to clean the igniter.

Air holes need to be cleaned. To do this, the jet is removed and the nozzle is cleaned with a thin wire. Some speakers have automatic electric ignition, but it has drawbacks: with low water pressure, it works unstably, the batteries need to be changed periodically.

Internal breakdowns

The following can happen to the water heater itself:

Ignition system not working

It is possible that there is no damage.

If the spark is generated by the batteries, their life may have been exhausted.

As experience shows, the batteries in the column have to be changed about once a year, even if the manufacturer promises a longer service life.

The igniter column may go out due to the fact that the user did not hold the forced gas button long enough at start. The safety element did not have time to warm up properly and fix the gas valve in the “open” position.

Water heater incorrectly set

The required capacity of the column depends on the temperature of the water entering it. In winter, the water in the water supply cools down and the gas regulator on the device has to be opened a little more. But in summer the water temperature rises by several degrees, so the column needs to be screwed on. But sometimes users forget to do this. As a result, the water heater shuts down almost immediately due to overheating.

In order not to suffer with adjusting the column before each season, choose a model with a memory function for the settings of summer and winter modes.

Water unit membrane failed

Now that's a breakdown. The following could happen to the membrane:

• loss of elasticity due to aging;
• the appearance of cracks or deformations;
• overgrowing with lime deposits.

Having disassembled the water unit, the membrane must be inspected, and if its appearance is clearly far from normal, the element is changed.

Clogged heat exchanger

To increase the efficiency of the heat exchanger, it is made from a tube with a small flow area. And if the water contains a large amount of hardness salts, this element will soon become clogged with scale. It is quite possible to remove it yourself. In this case, it is desirable to use a tool designed specifically for columns - then the heat exchanger does not have to be disconnected.

It is not necessary to use a purchased composition; you can prepare it at home by dissolving 100 g of citric acid in 0.5 liters of water.

Soot accumulated on the heat exchanger

This phenomenon leads to a deterioration in traction, to which the security system reacts. The easiest way to remove soot from the heat exchanger is with a vacuum cleaner, for which you must first remove the casing from the column.

The main or pilot burner is clogged with dirt

You can guess about the clogging of the igniter by a weak flame with a yellow cone at the top. The main burner may partially burn if there is dirt. In such a situation, you should call the master, who will clean the burners or, if necessary, replace them.

Model overview

Astra 8910-00.02

Ignited by hand. Open type combustion chamber. Specifications:

• Power up to 21 kW.
• Heats 12 liters of water per minute.
• Gas consumption 2.3 m3/h.
• The water pressure is 0.5-0.6 bar, these are the minimum and maximum values, respectively.
• D chimney - 12 cm.
• Dimensions 70×37.2×23 cm.
• Weight - 15 kg.

To what temperature is the water heated? Within 35-60 °C. For the column to work, it must be properly connected, gas supplied and water connected. Gas is connected through pipes ¾ inch. Water connection - through pipes ½ inch.

You can independently adjust the traction. The thermostat is located below. Very strong frame - can withstand any load. The power supply is protected by a special system. The fitting is adjustable with screws. A pressure regulator is provided. It is easy to check the presence of traction. Rapid removal of combustion products. Compared to other analogues, they are distinguished by reliability and safety.

VPG 8910-08.02

Differs from the previous modification:

• Lower power - 18 kW.
• Less productivity - 10 l / min.
• Lower fuel consumption - 2 m3/h.

All other parameters are the same as for 8910-00.02. The design is also similar - open chamber, manual ignition, etc.

HSV 8910-15

The device with a power of 18 kW differs from previous models in electronic ignition - it is made from batteries. This is a more comfortable solution, eliminating the need for the owner to have matches or a lighter on hand.The parameters repeat the previous model 8910-08.02. It differs only in the large diameter of the chimney - it is 13.5 cm. Warranty - 2 years.

HSV 8910-16

Power - 21 kW. It is ignited by electric ignition. Heats water with a speed of 12 l/hour. Gas consumption 2.3 m3/h. Chimney D 13.5 cm. Water heater weighs 15 kg.

Astra 15

This is a modification of low power - only 13 kW. Heats up 12 liters per minute. Open type combustion chamber. Fired up by hand. The minimum maintained temperature is 35 degrees. Consumes 2.2 cubic meters of gas per hour. Pipe 1.2 inches - for cold water. 12 cm - d chimney. Weighs 15 kg. The device has received mostly positive reviews. Attracts reliability - affects the high quality of the parts used, and high productivity. The system can withstand a pressure of 7 bar. There is a thermostat - it is at the bottom of the device. Estimated cost 8 500 rubles.

Astra 16

18 kW - power. High productivity - 14 liters per minute. 11 cm - diameter of the chimney. 5 bar is the maximum pressure the system can withstand. Consumes 2.1 m3/hour. Weight - 14 kg. Manual ignition. Open combustion chamber. This modification also deserved a lot of positive feedback. Consumers note the high performance of the device. The disadvantage is the increased gas consumption. But the system quickly catches up with the temperature. Cons - limited pressure parameters that the valve can withstand. There are burner failures.

The reasons

It is worth considering that breakdowns can be of a very different nature. For example:

• the flame did not ignite (it clicks, there is a spark, but it does not work or there is no reaction to switching on at all);
• goes out immediately or after a short time (both with automatic and manual ignition);
• the fire goes out when you try to turn on the water, increase the pressure or weaken it;
• the flame is lit, the water comes out a little warm, and then the column goes out;
• the column pops, cracks, mini-explosions appear when turned on;
• piezo ignition does not work;
• the piezo constantly works, but when ignited, the flame goes out;
• the automatic column does not burn, while there is a smell of gas;
• when the valve is opened, the DHW rod does not move.

Column malfunctions can be divided into breakdowns caused by external factors, and purely internal ones. The former are not related to details within the unit itself and depend on additional details or external influences (for example, adding temperature).

External factors

External breakdowns are as follows.

• The most common situation is lack of draft in the chimney of the column. If it is not cleaned, then it will become clogged with dust, dirt, and the combustion products will not find a drain and will extinguish the burner. Then, when the security system is triggered, the gas supply will be shut off.
• Could accidentally be in the chimney foreign object.
• The unit could just discharge the battery or batteries. This type of fault exists only if there is an ignition, which automatically operates on batteries.

• If the appliance does not work, after the first installation or due to repair work on the plumbing system, then there is a high probability that the hot water supply line was simply connected to the wrong place.
• Reduced water pressure.It is necessary to evaluate the water pressure (it will be weakened, water will flow in a thin stream).The ignition will stop working at low pressure, so the reason is no longer in the column, but in the water pipes. Although, it is likely that the filter itself, installed in front of the column, is clogged with something.
• Failed mixer,adding too much cold water, so the water in the column itself heats up too much and extinguishes it.
• Electronics. In modern columns there are a large number of control modules and sensors that control the operation of the entire unit. Their failures can lead to the fact that the gas will stop igniting.

Internal breakdowns

Internal factors are as follows.

• Incorrectly configured water heater.Due to the change of seasons, the water temperature also changes, so the column needs to be regulated, which is often forgotten to do.
• The membrane on the water unit has failed. If the membrane is many years old, then it could lose elasticity, crack, deform, become covered with lime deposits.
• blockagefilters or heat exchanger with soot and scale.
• Pilot or main burner turned out to be filled with dirt.
• Problemswith gas outlet sensor.
• Pops or small explosions when you try to turn on the equipment, it can happen due to insufficient draft in the ventilation or blockages in various parts of the water heater.

Lack of ignition

Another reason for breakdowns can occur due to several reasons. The column does not ignite when any of the following reasons are present.

In the absence of normal draft in the chimney, this situation can be observed. This is one of the most common and simple reasons. With a clogged chimney, there is no draft, the column cannot ignite normally.

Perhaps the reason for not igniting is the discharge of certain power components.The reason for this may also be a malfunction of the wires, or the igniter unit. To correct this situation, it is necessary to insert the battery, and also check the electric ignition system.

The equipment can also spontaneously turn off, often the water heater leaks. The last problem occurs due to the long operating time of the device.

Elimination of violation of traction

To test the thrust, try using an ordinary match. Bring it to the chimney and determine if there is a draft, then the flame will deviate towards the chimney.

If there is no draft, then the geyser will not ignite, and users will not receive hot water. In many columns, draft sensors are installed, and if they show insufficient draft, ignition will not be possible. There are situations when the flame ignites and immediately goes out - this is due to the fact that the combustion products simply have nowhere to go, they remain in the combustion chamber, and the flame goes out due to lack of oxygen. Lack of draft will require an inspection of the flue gas collector and the chimney itself. If there are blockages, they can interfere with the normal passage of combustion products. The column perceives this as a lack of traction and does not allow the gas to ignite (or the gas goes out immediately after switching on). Unfortunately, only a part of the chimney, which is visible before entering the wall, can be independently checked - further work should be carried out by specialists. If the house is private, you can try to deal with the chimney yourself.

Characteristics of boilers Oasis

The Oasis boiler is gas, but at the same time it will not be able to work on liquefied gas. All models are designed only for natural gas - conversion to liquefied gas is not provided and is impossible.In view of this, the boiler can only be used for buildings connected to the gas supply system.

With regard to the "average" structure, the Oasis boiler of various modifications is able to heat the area (m 2):

• NZR 13 - up to 100;
• NZR 16 - up to 120;
• NZR 20 - up to 160 - 180;
• NZR 24 - up to 200 - 220.

The volume of the membrane (expansion) tank of the gas "Oasis" is 6 liters. This must be taken into account if the boiler is selected for a private house. You may have to install an additional tank (with a large volume of coolant).

All Oasis gas boilers are double-circuit, therefore, in addition to heating, they also provide hot water supply. Depending on the automation setting, the water temperature can be from 36 to 60 0 С. The capacity of the DHW circuit is 10 l / min (for the NZR 24 model - 12 l / min) - it is quite sufficient to meet all the household needs of a family of 5 - 7 people.

Speaker problems

We will immediately make a reservation that we will consider the problems of flow heaters with an open combustion chamber, of which there are a great many installed in apartments and houses. We will bypass the repair of fully automated turbocharged columns with mains power and ignition from a hydrogenerator. These devices are quite complex and intervention in their design to an ignorant person is contraindicated. Troubleshooting of supercharged units should be carried out by service or gas services.

The list of malfunctions inherent in gas water heaters after several years of operation is as follows:

• the smell of gas;
• problems with ignition and start-up of the main burner;
• turning off the heater during operation;
• various leaks.

If you smell gas, whether it is permanent or intermittent, you must immediately turn off the corresponding tap, open the windows and call the emergency service. Explain to the dispatcher the nature of the problem, and he will make a decision - to urgently send a team to your home or simply send the master in the order of the queue. There are no other options, it is strictly forbidden to fix methane leaks on your own

There are no other options, it is strictly forbidden to fix methane leaks on your own.