Error codes for gas boilers Oasis - what they mean and what to do in a specific situation

Design and principle of operation of Oasis boilers

The Oasis gas boiler can only operate on natural gas; conversion to liquefied gas is excluded; accordingly, it can be installed in rooms connected to the central gas main.

These devices are double-circuit, designed to heat a room and supply it with hot water for domestic needs. The heating temperature of the liquid ranges from 35-60 degrees, the hot water supply capacity is 10 liters per minute.

Equipped with a closed combustion chamber, which significantly reduces gas consumption. The operation of the burner is controlled automatically; there are photo sensors on it that monitor the presence of gas. A coaxial chimney is used for smoke removal; the air required for the combustion process comes from the street.

The design provides two heat exchangers, one for the heating circuit, the second for heating the DHW liquid. Thanks to this, the heating time of the liquid is reduced, and it is also possible to use the boiler in the summer.

Room thermostat with display

It is possible to connect to a room thermostat, which is not included in the package; it must be purchased separately. For safe operation, there are relief valves that are activated if the coolant temperature exceeds the permissible limits. Also, for safe operation, there are flow sensors that monitor the pressure in the heating circuit; in case of non-compliance with the standards, the operation of the system is blocked.

Error codes for Oasis gas boilers: meaning and what to do

The Oasis gas boiler can only operate on natural gas; conversion to liquefied gas is excluded; accordingly, it can be installed in rooms connected to the central gas main.

These devices are double-circuit, designed to heat a room and supply it with hot water for domestic needs. The heating temperature of the liquid ranges from 35-60 degrees, the hot water supply capacity is 10 liters per minute.

Equipped with a closed combustion chamber, which significantly reduces gas consumption. The operation of the burner is controlled automatically; there are photo sensors on it that monitor the presence of gas. A coaxial chimney is used for smoke removal; the air required for the combustion process comes from the street.

The design provides two heat exchangers, one for the heating circuit, the second for heating the DHW liquid. Thanks to this, the heating time of the liquid is reduced, and it is also possible to use the boiler in the summer.

Room thermostat with display

It is possible to connect to a room thermostat, which is not included in the package; it must be purchased separately. For safe operation, there are relief valves that are activated if the coolant temperature exceeds the permissible limits. Also, for safe operation, there are flow sensors that monitor the pressure in the heating circuit; in case of non-compliance with the standards, the operation of the system is blocked.

Basic error codes

Let's try to look in more detail at the error codes of Oasis boilers and the possible reasons for their appearance.

e1

Error e1. Indicates an ignition malfunction, possible causes:

• There is no gas supply to the device. Check if the gas valve is open, if not, open it. There may also be insufficient or, on the contrary, excessive gas pressure; to eliminate this, you must contact the gas service.
• The contact connection is broken or missing. Check for opens and shorts using a multimeter. They may have oxidized, in this case, strip and insulate the wires...
• The board has failed. It is necessary to test it and, in case of malfunction, replace it with a new one; this type of repair requires the necessary qualifications. Boiler control board
• The control ignition electrode is broken. First, clean it using a wire brush and visually check for damage to its body. If you find a defect in it or its wire, replace it.
• The plug is not inserted correctly into the socket, replace it with the other side

e2

Error e2. Lights up if the air pressure switch does not close 8 seconds after turning on the fan.

• Clogged pipe or chimney. Check for draft and clean the chimney. It would also be a good idea to open the combustion chamber, there are two pipes connected to the monostat, remove them and blow them out.
• The relay that controls the air pressure has failed. Test it for serviceability and replace if necessary.
• The fan has failed. Check its serviceability, examine it carefully, there are tubes in it, check their integrity, whether they are melted. Next, you need to turn on the boiler and after the fan starts working, short-circuit the two wires going to the monostat. Oasis boiler fan If the boiler lights up, then the monostat is broken and needs to be replaced, and if not, then the problem is in the control board.
• The electronic part of the device is faulty, or a wire is coming off somewhere. Perform a visual inspection of all connections of the device and the integrity of the wires. If the board is faulty, then it is better to contact specialists to repair and diagnose it.

Basic error codes

Let's try to look in more detail at the error codes of Oasis boilers and the possible reasons for their appearance.

e1

Error e1. Indicates an ignition malfunction, possible causes:

• There is no gas supply to the device. Check if the gas valve is open, if not, open it. There may also be insufficient or, on the contrary, excessive gas pressure; to eliminate this, you must contact the gas service.
• The contact connection is broken or missing. Check for opens and shorts using a multimeter. They may have oxidized, in this case, strip and insulate the wires...
• The board has failed. It is necessary to test it and, in case of malfunction, replace it with a new one; this type of repair requires the necessary qualifications.

  
  Boiler control board

  Read also:  Is it possible to repair a gas water heater with your own hands?
• The control ignition electrode is broken. First, clean it using a wire brush and visually check for damage to its body. If you find a defect in it or its wire, replace it.
• The plug is not inserted correctly into the socket, replace it with the other side

e2

Error e2. Lights up if the air pressure switch does not close 8 seconds after turning on the fan.

The reasons may be:

• Clogged pipe or chimney. Check for draft and clean the chimney. It would also be a good idea to open the combustion chamber, there are two pipes connected to the monostat, remove them and blow them out.
• The relay that controls the air pressure has failed. Test it for serviceability and replace if necessary.
• The fan has failed. Check its serviceability, examine it carefully, there are tubes in it, check their integrity, whether they are melted. Next, you need to turn on the boiler and after the fan starts working, short-circuit the two wires going to the monostat.

  
  Oasis boiler fan
  If the boiler lights up, it means the monostat is broken and needs to be replaced, and if not, then the problem is in the control board.

• The electronic part of the device is faulty, or a wire is coming off somewhere. Perform a visual inspection of all connections of the device and the integrity of the wires. If the board is faulty, then it is better to contact specialists to repair and diagnose it.

e6

Error e6. Indicates that there is no flame. What to do if a similar problem arises?

The following must be excluded:

• Presence of stray flame. There may be an accumulation of air in the system. Try restarting again.
• The connection in the wires is broken. Check for correctness and integrity.

  
  Wire connection methods

• One of the board elements that is responsible for starting the device is broken. The board needs to be tested.

e7

Error e7. Low pressure or insufficient amount of liquid in the hot water supply system.

Probable reasons:

• There is not enough water in the system; the cause may be a leak in any of the system elements; this can be done with a dry cloth. Check everything carefully and if a leak is found, fix it. This can be done using special sealants, tightening the joints, use high-quality seals.
• The pressure level in the expansion tank is not adjusted. Since the liquid expands when heated, the pressure in it increases and the liquid is discharged using the valve. It is necessary to strictly follow the characteristics of a particular model and adjust the required level of pressure in the system.

  
  Expansion tank in the heating system

• And, of course, the problem may lie in the electronic board of the device itself. It is necessary to inspect the board for disconnected contacts and other damage.

e9

Error e9. Indicates that the pump has failed, or that the pressure in the system is unacceptable.

Check the following:

• The level of optimal fluid pressure in the system varies from 0.1 to 0.15 atm.
• Check the serviceability of the water pump by first removing it. If necessary, clean the pump, rinse, check the integrity of the blades.
• The control board is broken. Needs replacement.
• You also need to pay attention to whether the temperature sensor is working properly.

Internal structure of Oasis boilers

The design of the Oasis boiler is designed taking into account complete automation of the operation of the equipment and maximum operating comfort for the user.
One of the characteristic features of the modifications is the presence of a closed combustion chamber. Air intake is carried out from the street, using a coaxial chimney. Combustion products are also removed through the pipe. This makes the operation of boilers as safe as possible. In addition, due to the closed firebox, gas consumption is significantly reduced.

Separately, we can note the presence of two heat exchangers. This solution increases the speed of heating water for domestic hot water, and also allows the device to be started in summer mode, which increases its efficiency.

All Oasis wall-mounted double-circuit gas heating boilers have a high degree of autonomy, achieved thanks to an internal structure that includes:

• Burner - a pressurized type device is used. The connected burner is controlled automatically. Electric ignition is provided. Photo sensors are installed on the burner to monitor the presence of gas. After a power outage, the gas supply to the burner is blocked. The boiler uses a coaxial chimney. It simultaneously takes in air and removes combustion products. Not included in the basic package.
• Safety group - 2-circuit mounted gas heating boiler Oasis has multi-level protection that prevents spontaneous combustion and the occurrence of explosive situations. Provided: water flow sensor - monitors the pressure of the water supply and heating system, blocks operation if it drops to critical levels. Relief valves are installed to help in case of overheating of the coolant. When the room temperature drops, the antifreeze system is activated, maintaining minimal heating of the heating system.

Oasis boilers have been certified and received permission to operate by Rostechnadzor. This made it possible to operate equipment from a Chinese manufacturer throughout the Russian Federation.

What to focus on in operation

Malfunctions of Oasis boilers are mainly associated with omissions in the installation or maintenance of equipment. A complete list of manufacturer's recommendations can be found in the operating instructions. The most important requirements are the following:

1. Boiler piping - the internal structure of the boiler contains a circulation pump and an expansion tank. During installation, you will need to additionally install a filtration system. The automation is sensitive to voltage drops, which is one of the main disadvantages of the Oasis boiler. To eliminate possible failure of the control board, you need to connect a UPS.
2. Lots of noise – the forced-air burner is noisy. The noise level requires installation of the boiler in a separate room. The technical characteristics declared by the manufacturer in this regard are somewhat different from what actually happens. It is especially noisy when the DHW is turned on.
3. Coaxial chimney - it is extremely important to comply with the installation requirements, strictly adhere to the maximum height, angle of inclination and other parameters. Productivity and efficiency ultimately depend on a quality installation.

The boiler installation standards are quite simple and apply to almost every model of gas equipment. Strict adherence to recommendations is the key to trouble-free operation of equipment.

Chinese doesn't mean bad

For domestic consumers, Chinese equipment is often synonymous with low-quality products.
But Oasis boilers refute this statement. All components from the closed combustion chamber to the temperature sensor are checked for quality and compliance with standards. The only condition for trouble-free operation is the installation and operation of the boiler in accordance with all the rules and in accordance with the manufacturer’s recommendations.

Technical data, instructions boiler OASIS

The OASIS wall-mounted gas boiler for home heating is presented in two modifications, the first model, the simplest OASIS BM, has all the technical data necessary for modern technology, the second model OASIS RT is fundamentally different in its internal filling.

Electronic control panel for gas boiler OASIS.

Turn on the boiler, set the temperature of the DHW and heating system. In summer mode (sun) using the buttons for the DHW circuit and in winter mode (snowflake) for the heating circuit. The transition between modes is carried out by the “mode” button. Ready! The boiler will automatically maintain the set temperature in the DHW system when the hot water tap is opened, and in the heating system, with a turn-on interval of 15 o C.

Control functions with indication output on the liquid crystal display of all OASIS models.

Timer for turning the boiler on and off. The OASIS gas boiler is equipped with an on and off timer. It works very simply. The user determines at what hour of the day the boiler operates and at what hour it is forced to turn off, thus we have 24 timers, one for each hour of the day. This is convenient, since you do not have to calculate the time minute by minute, which can lead to confusion between timers and failure to start. In the event of a power outage, information about the configured timers will be saved. You only need to reset the local time(s).

We draw your attention to some functions of the OASIS household gas equipment:

• in SUMMER mode, the timers do not work, since the heating system is turned off in this mode;
• The DHW system is a priority in the operation of the boiler, so setting the timers does not affect its operation.

Overall dimensions of the OASIS wall-mounted boiler, the diameters of the connected pipelines, water pipes, gas pipelines, and coaxial chimney are marked.

Internal structure of the gas boiler OASIS model RT with separate heat exchangers.

Internal structure of the OASIS gas boiler model BM with one copper heat exchanger.

Options for connecting chimneys to the OASIS gas boiler.

Description of the installation of a separate chimney in which carbon monoxide is removed through a separate 80 mm pipe. The air supply for gas combustion in a closed combustion chamber is also supplied through a separately laid pipe with a diameter of 80 mm.

Boiler error codes OASIS RT, OASIS BM. Decoding standard errors on all models of the OASIS gas boiler.

Boilers have relatively recently appeared on the heating equipment market. Positioning itself as a large international corporation created by German investors, Forte occupied a niche in the production and sale of bimetallic radiators. In order to expand the sales market, a step was taken to produce.

Currently, the model range is represented by one type of gas equipment - the Oasis NZR boiler. In order to increase the number of potential buyers, 4 main modifications of this boiler were made.

The Oasis NZR double-circuit gas boiler is designed to heat the coolant in the heating system and provide hot running water. Its general characteristics allow it to be used as the main heating device both in private homes and in small office buildings.

4 boiler models have been developed, which differ in rated power - from 13 to 24 kW. The company's marketing strategy allowed boilers with low power to confidently occupy their market segment. The relative shortage of inexpensive and low-power boilers has become a niche that allows Forte to continue its successful advancement in the market.

Specifications

All models of Oasis boilers are wall-mounted and have the technical characteristics presented in the table:

Technical characteristics of Oasis NZR boilers

Like every type of heating equipment, these boilers have some characteristic design features:

• Closed combustion chamber. The flow of air to maintain the combustion process occurs using a fan. To implement this process, a coaxial chimney is provided, consisting of two air ducts - a pipe in a pipe. One (external) provides air flow from the street, and the second (internal) removes gas combustion products to the street.
• The heat exchanger is made of copper, which increases its functional properties.
• Convenient controls. The process of adjusting and monitoring water temperature, both in the heating system and in hot water supply, is carried out using an electronic panel.
• Power modulation with electronic system.
• Extended boiler operation protection system for the following cases:

1. Overheating of water.
2. Critical decrease (increase) in pressure in the water supply system.
3. Automatic restart when water stagnation occurs.
4. Protection of electronic components when electrical voltage drops.
5. Preventing water from freezing in 2 systems.
6. The presence of a draft sensor to monitor the process of removing combustion products.

• Ionization control of the burner flame.

But the main criterion for our citizens remains cost. It is thanks to a well-thought-out pricing policy that sales of these boilers are growing every year.

However, it is worth noting that in addition to the positive factors, there is some negative, which can be characterized by the phrase - not a very good quality. Of course, this does not apply to all products.

For a modern person, one of the main criteria for choosing a product is customer reviews.

The Oasis wall mounted boiler seems to be working, although there is no water circulation in the system. The return pump heats up noticeably. What is the reason?

The dirt filter is clogged or the tap is turned off somewhere, which prevents the passage of coolant. The circulation pump could also fail.

I would like to know for what purpose is a protective thermal sensor installed in the system?

This component stops the gas supply to the burner when the primary heat exchanger fluid overheats.

We installed the Oasis boiler a week ago. Now at the moment of start the wick burns for five seconds, but the main burner does not support the fire, and because of this the device begins to go out. How is it possible to solve this problem?

Judging by the description, the ignition unit is defective or there is a problem with the burner. Just in case, check whether the phasing was disrupted when connecting to electricity.

The heat exchanger can be easily removed from the boiler using a simple screwdriver. Below is a description of the dismantling procedure. Drain the water from the appliance using the drain tap. Then you need to empty the DHW system. Unscrew the heat exchanger mounting screws and remove it from the frame.

I connected this device at the beginning of August. Presumably after 4 months the DHW circuit stopped working, although the heating mode functions as expected. I tried to turn on the hot water, but the unit only displays the temperature and is not going to produce heating. Help, how to fix it?

Most likely the problem is in the 3-way valve. It requires replacement.

Gas double-circuit boiler Oasis BM-16. Connected to heating and water. The heating works normally, but when hot water is turned on, the indicator (faucet) does not light up. This happened in the fall, but within 2-3 days it fixed itself. At the beginning of spring, problems began, the water began to heat up every once in a while, and in the end it did not turn on at all. Please tell me in detail, can I fix it myself or should I look for a professional?

If the boiler's DHW circuit does not work, then the likely reason is the flow sensor, which is installed in the cold water inlet pipe into the DHW circuit. It represents a turbine that could tilt or become clogged, thereby ceasing to give a signal that water is leaking in the pipe. You can check the condition of the sensor yourself by turning off the water and unscrewing the cold water supply from the unit’s pipe. Make sure the sensor is not jammed and can rotate freely.

Who has encountered such a malfunction of the BM-16 boiler? The water in the heating system, shown on the display, heats up to the set temperature, turns off, goes into circulation, resets the temperature, but then does not turn on.

In your case, you need to understand the problem in more detail. Depending on the model, certain actions are possible.

A wall-mounted boiler Oasis NZR-13 was installed. The problem is the following: I set the heating temperature to a maximum of 80 degrees. The heating outlet pipe is very hot, the radiators are slightly warm. I invited a specialist from the service center. He looked and said that a lot of gas is supplied, the unit quickly gains temperature and turns off, but does not have time to flush out the water in the system (pump at third speed). Now he is trying to reduce the gas pressure, and something is not working. Maybe you can tell me where and how this is done?

Most likely, scale has formed in the heat exchanger, which leads to boiling water. The second reason is wear of the pump, weak rotation of the impeller, or simply dirt. The heat exchanger and pump need to be checked and cleaned.

Heating boiler zrt 24 kW. When cold, when first started, it works fine, but with a characteristic noise, as if there was air in the system or like it was boiling. Subsequent warm-ups with the same noise, but the temperature quickly rises and it goes out. DHW is working fine. Explain what the reason could be?

Most likely, the reason is in the pump - the impeller is jammed. Unscrew the plug and try turning the impeller by hand. Another reason could be scale in the heat exchanger.

Heating boiler Oasis zrt 24. When you turn on the hot water, not only does hot water flow from the tap, but the radiators also heat up, and the pump makes a slight noise. All this is in summer mode.

Most likely, the problem is in the operation of the three-way valve and servomotor. Check whether the servo rod is fully actuated when opening the hot water tap. There may be a malfunction of the servo drive or souring of the rod.

Model ZRT-18. Water is leaking from the pressure valve. Does anyone have any ideas or what did they do to fix the leak. In operation for 6 years.

Unscrew and check the leaking valve and replace it if necessary.

The wall-mounted gas boiler Oasis 18 operates at full capacity and does not turn off. The indicator on the display shows an open tap icon, so the gas supply is not turned off, unless manually.

Perhaps the flow sensor is shorted, or the rod in the three-way valve is stuck. Check the flow sensor and stroke.

Oasis zrt 24. When igniting, there is a problem (DHW mode or heating - no difference): the relay switches on and off with a crackling sound, even when a flame appears, and only after a few seconds of burning it burns evenly, without failures. Sometimes it doesn’t light up on the first try, but I’ve never made an error yet. The idea is to test the serviceability of the flame control sensor and the serviceability of the pressure switch.

It is necessary to check the flame ionization sensor, and also clean the ignition electrodes and burner nozzles.

The problem is with the erko dwp 15-50 a circulation pump. The pump volute, plastic, leaked. How to remove the pump?

The pump needs to be replaced. To dismantle the circulation pump, you need to remove the front panel of the unit, unscrew the two screws from the bottom of the pump and remove the two clips on the inlet and outlet pipes of the pump.

Gas wall-mounted boiler Oasis 24 kW. The house (120 square meters) has heated floors. The floors take a long time to warm up, but then retain heat for a long time. The circulation pump turns on every 5 minutes, but there is no point in this, since the burner turns on no more than twice an hour. Please tell me, is it possible to change the pump activation interval? By the way, I’m happy with the boiler, I switched it to propane, it works well, in cold weather the consumption is about 2 cylinders for 6 days. The only thing was that I had to install an additional expansion tank, because when heated, the pressure rose unacceptably and had to be reset to normal, but even after the coolant cooled slightly, the pressure dropped below normal, and it did not work well. I placed 2 cylinders at low pressure in parallel. The cylinders have stopped freezing and are now burning out completely.

Check the service settings - they must correspond to the values ​​of the underfloor heating system and liquefied gas. The pump works correctly, achieving uniform heat transfer by passing the coolant. It is impossible to change the interval at which the pump is turned on; it is only possible to set it to continuous operation.

The Oasis VM-24, double-circuit boiler is in operation. There was a problem like this. When the pump periodically turns on, the turbine turns on along with it and runs for about 30 seconds, then turns off, and the pump continues to drive water. Ignition does not occur because the water in the system has not yet cooled down to the set point. With a circulation pump, everything is clear why the turbine turns on. This doesn't happen often, but I still noticed it.

Turning on the turbine independently does not have any negative impact on the operation of the unit. This can happen when the hot water supply circuit is turned on, which is normal, or due to the fact that an unauthorized turn-on signal is received at the turbine starting capacitor. This can occur due to stray currents, the presence of which can be diagnosed by measuring currents on the gas pipe. If there are currents, it is necessary to install a dielectric coupling.

Wall-mounted double-circuit boiler Oasis VM-24 kW. I bought a house, this unit was installed, it would soon be cold, and the heating was terrible. It runs once, turns off, 2 batteries are hot and the other is warm. Then it turns on only after 4-5 hours, and the batteries quickly cool down. It's +10 outside, and we're already freezing. I thought the thermostat was broken, I disconnected the wires, then connected them together, but it didn’t turn on. Why dont know. In theory, it should have turned on immediately and warmed up. And now a strange nasty squeak appeared. Tell me how to fix everything, please?

A characteristic squeaking sound can come from the expansion tank (it bleeds air from the spool), or from the circulation pump, which needs to be checked and the air bleed through the central plug.

In the VM-16 boiler, water is boiling at the DHW inlet, the flow sensor has burned out, and steam is leaking from the American connection. Gas workers said that these models have this feature.

The cause of such a malfunction, overheating and failure of the DHW sensor could be a heat exchanger that became clogged and failed.

I bought a gas boiler Oasis BM-24. I want to switch it to bottled (liquefied) gas. What pressure should be set? And what other settings need to be changed in the service menu? I already bought the injectors. And another question: should I change the pressure using a pressure gauge or not?

To switch the boiler to work with liquefied gas, you need to replace the nozzles and change the FA parameter in the service menu, replacing 0 with 1. Yes, the gas pressure on the burner should be approximately 80 mm (maximum) and 30 mm (minimum). The pressure is measured at the gas valve fitting.

Model NZR-24. The problem is that it turns off automatically. That is, without errors and for no apparent reason, the unit turns off spontaneously, the display shows OFF. You come up, press the power button, and it continues to work for some time. Then it turns off again. The intervals are always different. Maybe they turn off every hour, or maybe they work normally for a week. It is noticed that it turns off when ignited, that is, it tries to ignite, but something does not work out for it and it turns off. The spark seems normal, gas is flowing. The network is connected via an uninterruptible power supply (but I tried without it - the same thing).

Is there a dielectric coupling on the gas pipe leading to the boiler? If there is no clutch, then we advise you to install it, but if there is one and the unit works like this, then it is possible that the problem is in the control board and it needs to be replaced.

I have a gas boiler Oasis VM-20. The house is new, everything is connected except gas. I decided to fill the system. I unscrewed the plug on the pump, opened the heating taps, and turned on the cold water. And I turned off the feed tap, but no water flowed into the battery system. How do I fill my heating system with water?

Most likely the problem is related to an incorrectly installed heating system, or incorrect installation of the boiler. Check the heating system and all connections or call a technician.

Please tell me, we want to install a wall-mounted boiler in the apartment and are wavering between Oasis BM-16 and RT-16. The first one has a separate heat exchanger, and the second one has a bithermic one. The rest of their parameters are the same. What's the difference? Which one is better to take? Apartment 2/2 brick house, 68 sq. m.

The first model BM-16 has a bithermal heat exchanger, and RT-16 has two separate heat exchangers. In boilers with a bithermic heat exchanger, there is no separate secondary heat exchanger responsible only for the DHW circuit, which makes them cheaper, but the heat exchanger of such models is more sensitive to water quality and if the water is hard, with a high salt content or from a well, the bithermic unit clogs faster. In such cases, we recommend using RT models with two separate heat exchangers.

Tell me who knows. I can’t get the ZRT-18 boiler to work with external control, that is, I put a jumper on the terminals, remove it, but it still works according to the internal temperature settings.

Initially, there is a jumper between the terminals for connecting the room temperature sensor. You must first remove this jumper (bite it) and only then connect the room temperature sensor.

Please tell me why the hot water on the Oasis VM-18 boiler is either boiling water or cold? The settings do not help, I also changed the amount of water.

Check the settings in the service menu, the gas pressure leaving the burner should be set to max-12 mbar, min-2 mbar, the heat exchanger could also be clogged.

The wall-mounted gas boiler Oasis nzr 16 cuts off the gas burner for a split second when supplying hot water or heating. No errors are displayed and it continues to work. What is the reason?

A short-term burner shutdown is possible for several reasons, for example due to a gas valve. It is possible to find out the reason more precisely only on the spot. Such operation is not a malfunction and does not affect its efficiency and performance.

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OPERATION AND REPAIR OF BOILERS
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In this article we will look at the Oasis gas boiler of the NZR series (available in 4 modifications). The number after the abbreviation “NZR” indicates the power of this boiler. For example, the Oasis NZR 13 model has a thermal power of 13 kW.

Since all modifications have similar characteristics, we will denote their numerical expression in a range.

We have a certain residential or administrative area, which has its own dimensions. Managers of household appliance showrooms guide buyers towards them when choosing a boiler. But at the same time, the features of the building or apartment are absolutely not taken into account:

1. What material is the building made of? For example, private houses made of profiled timber are considered warm, and concrete “Khrushchev” buildings in this regard cause a lot of criticism;
2. how is it insulated? After all, even in city apartments there are differences. Someone does, for example, internal insulation, glazing of a loggia or balcony;
3. year of construction (applies to apartment buildings). You need to understand that in different periods there were significant differences in construction technology, and the service life reduces the quality of thermal insulation of premises. Consequently, a more powerful boiler is needed;
4. location of the house. It can either be “open” to all winds, or, conversely, blocked by other houses, a forest belt, a hill, and the like. The climate in the area must also be taken into account.

The approximate power that the boiler should have is determined at the rate of 10 kW per 100 m 2 of room (ceilings of standard height). But if any mechanism is “driven” to the limit, then it will not work for long. That is why the power calculated in this way is increased by a third (the required reserve).

If a multi-storey building is built using modern technologies, and a private one is well insulated, then you can be guided by the ratio (5 - 7) kW per 100 m2. For old or poorly insulated buildings (“Khrushchev-era buildings”), the “formula” (15 – 20) per 100 m2 is used.

Other faults

A situation may arise when the boiler stops heating water, that is, cold water flows from the tap when turned on. Most likely, the problem lies in a malfunction of the turbine, which does not transmit a signal to the sensor, then the flame does not ignite and, as a result, the liquid does not heat up.

The turbine cannot be repaired and needs to be replaced. To prevent a similar situation from happening again with a newly installed turbine, we recommend purchasing and installing a high-quality fluid filter.

Variants of error codes and measures to eliminate them

There are boiler models that are not equipped with an LCD display, but they also have a diagnostic system for equipment operation. When a fault occurs, LED lights of different colors light up or flash on the unit panel. Their options are deciphered in the technical documentation.

The following is a list of the most common codes for popular models on the boiler equipment market, which will be a good help to users who decide to fix the problem themselves.

Boiler Vaillant

Vaillant boiler: errors

Proterm boiler errors

Proterm boiler errors

Baxi boiler

Baxi boiler: error codes