Question: We installed and connected the Bosch 3000 gas wall-mounted boiler installed in 2013. I did the two-pipe system myself, one floor. The boiler is fed through a stabilizer. The house of the father-in-law who is absent for a long time in the winter. In the spring of this year, the boiler began to give an "AA" error and stopped heating in the heating circuit. Water heating goes without problems.

In the instructions for the indicated error, it offers the following options: 1. Stop the pump. 2. Check the temperature sensor of the heating circuit. 3. Check for lime deposits on the radiator. Following these points, I checked the pump and heat exchanger, the pump shaft rotates, the heat exchanger is clean and there is no scale. Empirically established that when the boiler is turned on, it starts to heat the water supply circuit.

The three-way valve does not open the heating circuit and, as a result, the boiler displays the error "AA" overheating. Heating pipes are cold. After an unsuccessful attempt to start the heating, he turned off the gas and simply restarted the boiler until the "EA r" error appeared, there was no ionization flow, and only after that the three-way valve opened the heating circuit and the batteries became warm.

Since the boiler is located in the area and far from the service, I decided to remove the electrical part of the three-way valve for the time being and open the heating circuit without hot water, in this state, the boiler quickly warmed up all the batteries. I assume that some mode is enabled on the boiler that does not allow opening
heating circuit to the three-way valve. I did not have time to check the temperature sensor in the service mode. Mode solar panels disabled for sure. How to reset the boiler settings to factory settings did not immediately find in the instructions?

Answer: There is no such mode for a 3-way valve. You may have a stuck water flow sensor. Disconnect the sensor and try to start heating.

Question: A Bosch WBN 6000 wall-mounted boiler is installed. When working on hot water, the burner ignites 8-10 seconds after the hot water tap is opened. Is that how it should be? (It's just embarrassing that other manufacturers do not have such a long delay) The ignition delay time is set to the minimum. (parameter 2.9E).

Answer: Look at the parameters: 1.6d - the current flow rate on the turbine - to understand the flow rate of water flowing through the boiler. 1.7s minimum hot water consumption - maybe something here. And most importantly, we look - 2.9E - the delay in the signal of the DHW turbine, the factory value is 2 - 0.5 seconds! put it down. How about water consumption in general? how many liters per minute look parameter - 1.6d. If everything is fine, take out the hot water turbine, clean it, blow it, it should rotate from the breath.

Question: I have a bosch wbn 6000-24c gas boiler in operation. Since last year. So far, I have not observed any special jambs for him. Yes, and there is no way to check the hot water supply in a normal way in the house, I still do not live, repair. So the question is: Can it be used for showering, will there be hot/cold water temperature drops? Or do you still need a boiler for it! I just noticed that already when washing dishes alone hot water after 3-4 minutes the temperature of the water drops.

Answer: The Bosch wbn 6000-24c boiler is a traditional wall-mounted double-circuit boiler, the hot water circuit works in a flow like a gas water heater, while the heating is turned off. it is convenient to use such a boiler when hot water points are located nearby and turn on separately, first one then the other, otherwise the temperature will jump, if it is far away, you will have to shed a lot of water before the temperature goes constant.

Question: I have a double-circuit boiler. There is also a basic understanding. It was decided to make make-up from the water supply collector to the return pipe. Single pipe system. This is right? Is it better to make a drain valve from the return line too? I just watched how people had heating done and there they made water into the heating pipe.

Answer: Make-up separately in the supply in order not to touch the boiler make-up. Boiler feed is harder to change. I bought a valve of 2 pieces and rejoice. If it doesn’t hold, I changed the axle box crane and that’s it. In general, this is a make-up tap, the system is filled from an external tap in the absence of a boiler on the wall! So it seems to be necessary to put an external tap.

Question: The Bosch gas 6000 24 kW wall-mounted boiler is connected and connected, there is no external temperature sensor. Yesterday I installed the trz 200 thermostat. The instruction was only in Turkish with it, so I figured it out almost at random. I read the instructions, it became a little clearer what is written there, but unfortunately not much, maybe someone has it in Russian? In principle, I figured out how to program it, but the question arose - it works very strangely. In room 22, I set the manual mode and set it to 25.

The boiler starts up, the burner turns on, it works for 30 seconds, it cuts out, the purge is in progress, at this time the boiler panel displays that the summer mode is on. another 20-30 seconds pass, the burner starts up again and everything repeats, again for 30 seconds and falls into summer mode.

At the same time, the coolant temperature does not rise above 35 degrees (but is set on the boiler 45), so several iterations occur and as a result the boiler is cut down, hanging in summer mode. in the room as it was 22 and left. coolant in the region of 25. V automatic mode all the same. It seems that the thermostat does not care about the temperature in the room, although it shows it correctly (there is another independent sensor to check). Maybe I'm doing something wrong?

Answer: When my boiler was launched by Bosch, and specifically Bosch 6000, it also did not run the system. The symptoms were such that it warms at the outlet, the temperature rises wildly, and the water entering the boiler is cold. The boiler is connected in a single-pipe system f-100 mm, (then I’ll change it to batteries), So the masters were tormented and airy, then I have everything that is possible, etc., etc., because they are too lazy to mess around.

Everything was solved by lowering the pressure in the system, dropping it to 1 and then adding a bit through the additional valve (I don’t know what it’s called from the bottom of the boiler, it stands between the first and second pipes. It all worked. But there is one thing, the burner turns on periodically, the noise rises. When it turns off it doesn't matter whether it's a noise or a fan or a pump or something else.How it should work in general.There is no room temperature sensor, the boiler is constantly set to one temperature.

Question: We launched the Bosch 6000 double-circuit gas boiler with the CR12005 programmer, the coolant temperature is set and here and there 75 C, the temperature in the room is 21 C correctly, and the coolant temperature walks (the lower the outboard, the higher in the system).

Answer: She should walk - automation saves you gas.

Question: the heating of water for an indirect heating boiler in a single-circuit boiler occurs only when the umbrella turns on the boiler for heating, or can the boiler itself turn on to prepare hot water, regardless of whether the thermostat closes the corresponding contacts? I now have the DHW temperature set in the boiler menu, and the boiler temperature sensor is connected to the corresponding connectors in the boiler. For heating, the boiler is not working now, because the temperature in the house is higher than that specified in the umbrella settings. Can the boiler itself turn on to heat water in the boiler?

Answer: if you do not have OT, then the umbrella for the boiler is an ordinary room thermostat. Therefore, the boiler will heat up according to the readings of the boiler temperature sensor and the boiler settings.

Question: A Bosch 6000 gas boiler is installed. When a certain temperature is reached, should it turn off or maintain this temperature by modulating the gas supply? my burner does not turn off, but the temperature stays plus or minus degrees, is it supposed to be like that? And is there any gas overspending in this mode?

Answer: If the minimum power level of the burner corresponds to the heat loss, then the boiler will continue to work. No, there will be no excess gas consumption compared to the "on / off" mode. To optimize flow and increase comfort, it is recommended to install a room temperature sensor.

Question: I plan to install a Bosch boiler with an on / off type regulator. What I don’t understand is: is the circulation pump constantly running or not? When the burner is not working, does the pump drive the coolant? Or is everything turned off? The problem is that my heating pipe passes through a cold vestibule. And in severe frosts there is a negative temperature. I’m thinking, if the pump is turned off and there is no circulation of the coolant (ordinary water), will the pipe in this cold room not be defrosted at a time when it will be warm in the house itself?

Answer: It is configured through the menu from 1 to 10 minutes. (factory setting - 3 minutes after the burner is switched off).

Question: Boiler BOSCH GAS3000 24kW (closed combustion chamber) in operation for 1 year, the problem started from the first day when the hot water tap was opened, the water temperature fluctuates between hot and cold. I turned to the service center that serviced this product; they came five times to turn something, change the valve, then something else, in the end they changed the brains of this boiler (they said it was an original from Germany).

At first everything seemed to be fine, but then everything started all over again. I noticed that when the heating is off from the mountains. there are no problems with water, the temperature does not walk, and when the house began to heat, everything started all over again. I don’t know who to contact and is it possible to solve this, maybe this is a normal phenomenon for these boilers and in order to comfortably use the shower, you need to install a boiler?

Answer: Options:
1. Flush both heat exchangers.
2.Set the minimum and maximum pressure on the gas valve.
3. Replace the DHW temperature sensor. Option #1 is the most likely.

Question: Tell me: the Bosch wall-mounted boiler stopped, the pressure rose to 3 bar, it gave an E9r error. I tried to restart - earned, after 10 seconds. the pressure jumped to the maximum, I stopped everything, turned it off, released the pressure. I checked the gas pressure - normal, as it was. What could it be?

Answer: If the system is new, then the expansion tank is small, if the old one, then the expansion tank is faulty, or maybe the make-up is poisoning. In your case, the failure of the expansion tank is the most likely. If so, then option 2: pump up pressure, replace the tank.

Question: After opening the hot water tap and igniting the burner, the Bosch boiler gives an E2 error (the flow temperature sensor is faulty). This happens in 10-15 seconds. After closing the tap, the error is removed by itself, and the boiler continues to work in heating mode. If the faucet is opened
again, the situation repeats itself.

To complete the picture: An additional circulation pump was installed in the heating circuit, before its installation, the boiler showed an E2 error for a couple of seconds in heating mode, and then changed to E9 (the heat exchanger temperature limiter worked). The source of water supply is a borehole pump (water supply pressure from 2x to 3x without sudden jumps).

Answer: Possible reasons such:

Faulty own circus. pump (if it is only activated with DHW mode?).
- strainer clogged.
- Well, the sensor, probably, should not be ruled out.

Question: There was a choice of buying a boiler. I was specifically interested in the Bosch BW Exclusive ZWC 24–3MFA model. 2 contour turbo. I did not find information on this manufacturer. Anyone with info please share. Interested in quality, reliability, weaknesses, where they are assembled.

Answer: I operate Bosch BW Exclusive ZWC 24-3MFK single-circuit + boiler. The country of manufacture is on all boxes of Wernau, Germany, in fact Turkey has the most modern plant for the production of heating equipment there (a friend worked in Bosch and the issue was studied thoroughly). In terms of reliability: the line is new and there are no special statistics, but the previous lines were very reliable (according to a large number of reviews).

The workmanship is quite high, everything is included in the kit, including the connecting panel to the wall (but I still recommend replacing the ball valves on it). Weak spots- a plate heat exchanger for preparing hot water and a three-way valve, but with regular maintenance everything will work without failures. The choice is good, but it’s better to take a single-circuit + boiler and don’t save on the controller (I have the FW200).

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Questions about malfunctions of Bosch boilers

Question: We installed and connected the Bosch GAZ 5000 72kW boiler house 3 floors + basement. All floors are separated by separate circuits + 200 liter boiler. In that winter, the boiler worked perfectly well, even in the most severe frosts, but spring came and the boiler began to go out without a reason for errors on the display. Turns off the gas valve. The stabilizer stands ZORD thrust sensor is disabled there is a jumper. they sinned on the ground, threw it away, the problem still remained - the boiler is new, with the draft sensor connected, everything is the same. The outdoor temperature sensor is disabled. Help, tell me what is wrong with him and how to solve this problem?

Answer: Maybe a flame sensor and much more. It is best to have the boiler serviced by a quality company.

Question: Within two weeks, with a frequency of several times a day to once every two days, an error "flame not detected" appears on the Bosch ZSA 24-2 gas boiler (flashing indicator "50"). After restarting, the boiler functions normally. The boiler has been in operation for one year. Last winter, this error appeared only twice during the heating season. Other gas appliances in the house are working properly, there were no interruptions in the gas supply.

Answer: The main thing to look at is voltage fluctuations in the mains. The second option is an error during installation - for example, the throttle washer on the coaxial chimney is incorrectly selected. Well, the third is cleaning the ionization electrodes.

Question: Tell me - We installed and connected a 2-circuit boiler BOSCH ZW 14-2 DH KE. There are no problems with heating. But it raises doubts about the correct operation of the boiler itself. If you open the hot water, the burner lights up in the apparatus, the hot water goes all right, but now, if you close the hot water, there is a rumble of such force that it is impossible to be near. He called a specialist, he looked and said that it was vibration and something needed to be placed between the boiler and the wall, and left.

Said and done, but it didn't work. I conducted an experiment: as soon as the boiler began to buzz, I turned it off, waited and then turned it on - the hum disappeared, but not for long. 2 days later, same thing again. Tell me what to do? I dismantled the boiler (I removed the casing - the sound comes from the gas fittings. There, as I understand it, there is an electromagnetic valve with a coil, and this hum comes from it.). Maybe there are some options for solving this problem without calling the wizard?

Answer: Hardly. Boiler under warranty? The burner goes out immediately after the tap is closed, then the hum? It is better to contact the service.

Question: a problem of this nature - the Bosch Gaz 3000 W ZW 14-2 DHAE boiler does not reach full power; it runs on propane; the inlet pressure is 32 mb. On the nozzles when reaching a maximum of 16mb. With all this, the adjustment screw poppy. Tightly screwed up.

Answer: Was the inlet pressure measured when the boiler was operating at full power? If you are not 100% sure, then measure the inlet pressure when the boiler is operating at full power, if it is low, then the problem is in the gas supply.

Question: Bosch boiler gives error C4. Opened. Smoke extractor not working. When you turn on the boiler, it spins a little and that's it. I didn’t have a tester with me, but it seems that the voltage begins to be applied to it and is immediately cut off. As I understand it, there are two options - either a smoke exhauster, or a problem in the Heatronic board. I removed the smoker. The questions are: It has 3 terminals. Which are involved in the 1st stage, and which in the 2nd? I want to drive at work, measure the current. Does the Heatronic 3 board have overload protection for this circuit? Does anyone have a diagram of this heattronic?

Answer: I think you need to check the relay. Given it important role in a security system, it would be logical for automation to control its performance. And this can just be done by looking at its condition when the smoke exhauster is turned off, in particular when the boiler is turned on.

The reason may be simple - condensate in the pipes going to the differential pressure switch. To dismantle, unscrew the screw that secures the pipes going to the pressure switch and 2 screws holding the smoke exhauster housing. After that, we shift the smoke exhauster housing 5-7 mm down.

Question: Can anyone help? The BOSCH GAZ 3000 turbocharged, double-circuit boiler was installed in March of this year. The heating circuit heats up normally, according to the set temperature. The DHW heating regulator is almost at a minimum (40 degrees on the display), however, the water heats up to 60 degrees, and at the same time the indication on the display flashes, which indicates that the boiler has not yet dialed the set
temperature, very hot. The water pressure supplied to the house is normal, before this Ferroli boiler was, it heated the water like a clock. Maybe something in the boiler settings? I looked through the instructions, nothing about this.

Answer: Check the minimum gas pressure setting.

Question: We installed and connected the Bosch ZSC 24-3 boiler. It is controlled by a room thermostat. Formally, it keeps the set temperature in the room. But somehow strange. Set to 23 degrees. It turns on at 22.5, reaches maximum power quite quickly, catches up with the temperature of the coolant to ~ 70 degrees, while the temperature in the room becomes 23, and turns off. That is, it is not included in the modulation mode. Management of service functions 6b (reduced to 5) and 6c (reduced to 45) does not help. Maybe there are some other settings that I missed?

Answer: Modulation reduces efficiency. If the house is comfortable, then nothing is needed. How CT works: if the air temperature is lower than the one ordered, the contact is closed, the boiler works for heating as if there is no CT at all. If T air is higher, the boiler switches to "summer" mode, i.e. only hot water. If the coolant temperature is ordered above 70, then there should not be any modulation. Set the coolant T to 65, for example, and modulation should appear.

Question: We installed a Bosch ZWR 18-3 KE 23 gas boiler. I can’t figure it out. Drives hot water in a small circle (inside the boiler). The solenoid valve works, the pump works, but no water enters the heating system.

Answer: It is necessary to clean the 3-way valve - in a poorly accessible place between the magnet core and the movable tongue. Use a wide screwdriver to pry off the cover. It is attached with pins. Check membrane. The tube is thin. Valve travel. switching holes.

Question: The bottom line is that on the new Bosch GAZ 3000 W turbo boiler, in almost 100% of cases, an EA error occurs (there is no ionization flux), it is reproduced simply:

1) After turning on the boiler, it ignites without problems, heats the heating water to the set temperature and turns off.

2) The temperature in the circuit drops, and it tries to start again, makes the first attempt (a flame appears on the screen and you can really hear it, the ionization sensor shows 1 in the diagnostic menu, which means the flame is fixed) - extinguishes it, waits 5 seconds, makes a second attempt ignition (again, the flame is displayed on the menu and it is heard again), it extinguishes again and issues a blocking error EA (there is no ionization flow).

3) We reset the error - the boiler immediately ignites without problems on the first try, and then everything repeats again.

Tell me what to do? Checked power supply. I took zero from the outlet and looked at the potential difference with the ground - it shows zero, that is, zero in the outlet seems to be real. Plus, I checked how the grounding works - I looked at the potential difference between the boiler body and the ground - also almost zero. I didn’t climb into the boiler circuit, I acted easier - I switched the boiler to diagnostic mode according to the instructions and at the time of restarting the burner I displayed the readings of the ionization sensor on the screen - there was one, that is, information about the presence of a flame reached the brains of the boiler, in theory. Anything else to really check?

Answer: If the warranty is not over, let them repair it. Most likely, the repair will be in the replacement of the main board. With similar symptoms on Bosch boilers, we change the fee (1 fee per year, total 4 fees already). Of. the dealer throws up his hands, + different dealers strongly recommend different treatments. The dealer does not repair the elements of the boards - only the assembly. The boiler is provided with the proper gas pressure, the gas is clean, the exhaust is 100% normal (the servicemen themselves checked it), the inflow is provided, there is a stabilizer with a 4-fold margin, everything that can be grounded is grounded.

I solved the problem in the following way. I thoroughly rechecked everything, completely dismantled the chimney, found that the installers first installed a throttle washer 78, and then the length of the chimney slightly increased, and it was necessary to increase the washer to 80 (judging by the table). Replaced the washer - the boiler worked like clockwork.

The difference between 78 and 80 goals would seem to be negligible, but the effect was colossal! It turns out that the boiler did not have enough incoming air flow, the combustion process was abnormal, the automation fixed this and gave an error, the only negative is that in the manual for this error it is written about problems with power supply and gas, but it was also necessary to mention air supply.

Question: We carried out the installation with the connection of the Bosch ZWC 28-3 boiler, which worked properly for 3 years, then the following problems began to slowly creep out: It is difficult to lower the set temperature, you can increase it, but not lower it. It is necessary to turn off the boiler so that it stands for some time, after which you can turn it on and lower the temperature.

Spontaneous shutdown of the boiler. It can work normally for two days, then it can turn off and until you knock in the area of ​​\u200b\u200bthe board (quietly) during this there, something clicks and it turns on. It is clear that the easiest way to call the service (which I already did), but to give something for a fee of about 20 tr. while there is no possibility, maybe there is some cheaper solution? I examined the board for no oxides, the cables sit in place. Maybe someone faced such a problem?

Answer: Sounds like a relay failure.

Question: There is a problem. The Bosch WBN 6000-24C RN boiler had to be started on its own, according to the instructions. I did everything step by step according to the instructions. Enabled summer mode. Turned off, turned on. There was an error E9. The boiler circuit pump is still hot, should it be?

Answer: This error indicates overheating of the coolant. By all indications, the pump was not turned before the boiler was put into operation.

Question: I installed my native NTC Bosch, turned it on, as it is written in the instructions - it does not work. The three-way valve does not switch to boiler heating. If you close the thermostat connector with a jumper, the boiler starts to heat the boiler. But something is wrong with the sensor. Maybe there is some service function that needs to be switched?

The boiler sees the sensor in the AC function, but still does not switch to heating the boiler. For the Bosch boiler, local experts say that without a 12 kOhm NTC sensor, the boiler will not heat the boiler from the thermostat, just buy them NTC - it will heat. Is it so? In the instructions, the boiler thermostat is drawn to connect terminals 1.3 to ST8, and on their diagram there is a jumper on 1.2, how is this to be understood?

Answer: We do not touch the jumper, we hook the thermostat to 1.3 and will work without NTC. For a test, you can close them with a jumper and see how the three-way valve switches. Just be careful, do not forget - the boiler in this state will melt everything. I also figured out the NTC. I reset all settings in the service menu. Apparently something was screwed up there.

In terms of resistance, I somewhere came across a service manual for repair, it contained a table of the dependence of resistance on temperature for the native sensor. Bought the original sensor. For me, it’s easier than being smart about something, there’s also a connector for NTC that’s not simple. I found the NTC temperature in the service menu of the 2nd level, the "Ad" function.

Question: The wall-mounted gas boiler Bosch ZW 24-2 DHAE (closed chamber) just connected, launched and it periodically howls or sighs or groans, I don’t know how to formulate it correctly. after the gas burns out, a groan-sigh is heard after a few seconds, another groan and then everything is fine. The next time he may moan in an hour, or maybe in 10 hours, or maybe in half an hour. The batteries are all hot, the pump is running. If not for these monstrous groans, everything would be fine, I don’t know what to think.

The whole system is on the 25th pipe, three floors, three parallel circuits of 4 - 6 batteries of 10 sections. There are 14 batteries in total. there is a built-in expansion tank in the boiler, I also added an 18-liter expansion tank at the outlet just in case. but water does not enter it, it is empty. system pressure 1 - 1.5 bar. I have connected hot water in the second circuit so far, but I do not use it.

Answer: For this model, the howling will occur at the moments of switching on to maximum power, when the heating circulation brake opens the bypass line and buzzes. Check the filters, narrowing taps in the system. By reducing the gas passage, you do not allow the boiler to work only at the minimum wage and therefore there is no howl. As soon as possible, check on the boiler piping.

If the next 1-2 batteries have good circulation, then there will be no howl. Look at the pressure gauge when starting the pump in the boiler. By how many tenths does the pressure arrow in the heating system rise or fall. And you already have three floors, and the boiler is on the first, probably, so the pump has to keep a column of almost a kilogram. Bypass opens.

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Wall-mounted gas boiler Bosch GAZ 6000 W, used for heating systems, as well as supplying the consumer with hot water. P horse on which boiler Bosch GAZ 6000 W is able to provide a high level of tthermal comfort reaches 350 square meters.

Before reviewing, it should be noted that the company Buderus joined the Robert Bosch GmbH in 2003. moreover, the Bosch company for Buderus produces a boiler with exactly the same constructive brand Buderus U072 - 24K. U.G basic boiler Bosch GAZ 6000 Ware currently being issued for 12, 18 and 24 kW.

Buderus U072-24K the exact same line is presented for 12, 18, 24 kilowatts, the only difference between Bosch and Buderus boilers is the control panel and button design. Other programmable parameters, the entire control system, connection parameters, components from which it is assembled, as well as identical dimensions.

Wall mounted gas boiler Bosch GAZ 6000 W. Characteristics

Let's now focus on the Bosch GAZ 6000 W with a power rating of 24 kW. The boiler has a rather pleasant design. On the front side we see: the Bosch logo, control panel, on the right is a pressure gauge. A hint for users how to operate the boiler is pasted. On the left side there is a nameplate with all technical characteristics models .

Wall-mounted gas boiler Bosch GAZ 6000 W power 24 kW

Gas boiler Bosch GAZ 6000 W Detailed description

The overall dimensions of the model for 12, 18, and 24 kW are the same, since they are assembled in a single housing. It is worth noting that the Buderus U072-24K boilers have the same dimensions. Height 700mm, width 45mm, depth 299mm. There is a 35 kW boiler model, it has a different body and, accordingly, other dimensions. The unit develops a maximum power of 24 kW for heating and 24 kilowatts for hot water supply. The boiler is equipped with two circuits. The first circuit is for heating and the second for hot water supply. The Bosch GAZ 6000 W wall-mounted gas boiler is equipped with a closed combustion chamber.

Removal of combustion products is carried out through a coaxial chimney using a fan. The device allows you to install a channel divider or carry out the removal of combustion products through a system of separate chimneys. Combustion products are removed through coaxial smoke removal. In the case of separate smoke extraction through a system with a diameter of 80 mm. The weight of the apparatus is 31 kg. The low weight was achieved by reducing the metal consumption. The hydraulic group is made of plastic.

Gas boiler Bosch GAZ 6000 W Overview

The boiler heats hot water using a secondary heat exchanger. A system of separate heat exchangers. The maximum water consumption when heated by 50 degrees of this apparatus is 6.8 liters. This is a good enough indicator to work on one draw point. For two draw-off points, this parameter will not be enough.

Like all boilers with a closed combustion chamber and forced circulation of the coolant in the heating system, this unit is connected to a power supply of 220 volts and a frequency of 50 hertz. The consumption of the boiler in the operating mode is not more than 150 W. If the boiler is not working for the heating system or for the hot water system, but is in standby mode, its consumption is only 2 W.

Operating range for circuit temperature heating systems defined from 40 to 82 degrees Celsius. The maximum allowable operating pressure in the heating system is 3 bar. If the pressure exceeds , the safety valve . The capacity of the boiler circuit is 1.6 liters of water. Hot water is regulated from 35 to 60 degrees, the maximum allowable working pressure of water supply is up to 10 bar. The minimum flow pressure for hot water is 0.3 bar. The maximum water flow through 24 kW is 8 liters per minute, through the boiler 18 kW and 12 kW 6 liters per minute.

The Bosch GAZ 6000 W gas boiler allows operation on both natural and liquefied gas. For operation on liquefied gas, a reconfiguration is necessary. To do this, you will need to purchase an LPG conversion kit and adjust the electronic parameters of the boiler to operate on LPG. The consumption of natural gas is 2.8 m3 per hour, the consumption of liquefied gas is 2 kilograms per hour. Warm performance, boiler for 24 kW from 7.2 kilowatts to 24 kW.

Control Panel

let's Now let's take a closer look at the control panel itself and see what's on it. The control panel is a regular rectangle with an LCD display that displays information about the state of the gas boiler.

On the top left is the power button with which we can On / Off. boiler . In the middle are two buttons plus and minus, with which we increase and decrease relevant options . On the right is the Reset button, with the help of it we reset the error or confirm in any of the parameters.

On the left is the back button, which helps you navigate through the menu and exit it. Below the MODE button, with the help of it, you can select the operating mode of the boiler and, accordingly, adjust the temperature of heating and hot water supply. On the right is the manometer.
It is connected to the heating system with an external pipe 3/4, for water supply a pipe 1/2 and for gas an external pipe 3/4.

Gas boiler Bosch GAZ 6000 W Advantages and protection systems

Wall-mounted gas boiler Bosch GAZ 6000 W under The "hood" has a gas valve from SIT GROUP, on the right is a circulation pump from WILO. The cable from the pump is supplied without a plug. power at the first stage 38 W, at the third stage 84 W. Pump power is set depending on the volume of the heating system.

The heating system sensor is located in the supply pipe. Behind the 3 bar relief valve, there is a DHW flow sensor. The control board is reliably protected from water. At the back is an expansion tank, then you can see the wire to the fan. As for many other boilers, the fan is produced in Poland, at the FIME plant. The combustion chamber cover is very thick and solid. Such insulation is necessary for not to be intense front panel heating.

Gas boiler bosch gaz 6000 w wbn 6000-24 C It has 11 section main burner and copper heat exchanger. The ignition electrode and the ionization electrode are standard. On the left side, the water supply temperature sensor is not submersible, which is considered more reliable. In order to clean the burner, it is not necessary to dismantle the gas line. Simply unscrew 4 screws, remove the electrodes and pull the burner out for cleaning.

On the left at the outlet of the heat exchanger, a sensor for overheating of the heating system is installed. Above is differential pressure switch pressure switch that controls the draft in the chimney. To organize a chimney, it is recommended to connect a standard 60x100mm system and it is better to use original Bosch kits so that there are no problems during installation.

Gas boiler Bosch GAZ 6000 W 24 kW. Advantages:

Today we dismantled the Bosch GAZ 6000 W wall-mounted gas boiler, made a detailed overview of the main characteristics and components. detailed and instructions in the section. Please leave

Bosch has become world famous for producing quality household appliances for many years. AT last years it expanded its product segment by starting production in Portugal and Russia of household gas equipment for heating and water supply at home.

wall Bosch gas boilers quite quickly took their place in the market, primarily due to their well-known brand, quality and reliability, and at the same time - a low price for products.

I propose to make a review together on the boilers of this world-famous brand, focusing on the model range, internal structure, functionality, technical characteristics of the equipment, and show the advantages and disadvantages of Bosch boilers using this review as an example.

Bosch gas boiler models

In Russia and everywhere post-Soviet space we can meet several types of wall-mounted gas boilers from a German company. Let's see what features they have.

Boilers are produced in two versions:

– double-circuit gas boilers

– single-circuit gas boilers with the ability to connect an indirect water heating boiler

Gas boiler Bosch Gaz 6000

1. Double-circuit boilers Bosch are produced with a capacity of 12, 18 and 24 kW. These boiler models are marked Bosch Gas WBN 6000-24 C, the number 24 or 12.18 indicates the power of this model, and the letter "C" indicates that this boiler has two water circuits, i.e. designed for heating and for hot water supply according to the flow principle.

It is advisable to buy with a power of at least 24 kW, because models with a lower power give out only 8 liters of hot running water per minute. In practice, it is known that such performance is not enough for the full operation of the DHW circuit. A device with a rated power of 24 kW will give us 11-12 l / min.

2. Bosch single-circuit gas boilers can also be found with a capacity of 12 to 24 kW. This model is marked Bosch Gas WBN 6000-24H. Where the symbol "H" indicates that this type of boiler has the ability to connect an indirect heating boiler to it.

The volume of the boiler can be different: 100, 150, 200 liters, it already depends on your needs and the number of people who will use hot water for household needs.

All models of gas boilers are equipped with a turbine for exhausting exhaust gases. Due to this turbine, forced draft is carried out, which does not require the installation of a chimney in the house.

It is enough to buy to the boiler, which consists of two pipes. Through a pipe of a smaller diameter, combustion products are ejected, through a pipe of a larger diameter, air flows from the atmosphere into the gas boiler.

The coaxial chimney has a standard diameter of 60/100 mm and is exposed to the wall behind the boiler or through the side wall. These pipes can be extended by purchasing special extensions for a coaxial chimney separately. There is also the possibility of installing separate pipes (exhaust and inflow) with a diameter of 80 mm.

Bosch double-circuit gas boiler device

Now let's look at what a gas boiler from a German company consists of, what it has "hidden" inside under the body. Let's carefully analyze the scheme of the internal device.

The device of a gas double-circuit boiler Bosch Gaz WBN 6000-24C

1 - Membrane expansion tank
2 - Turbine for the exhaust of combustion products
3 - Combustion chamber
4 - Gas burner of the boiler
5 - Burner ignition electrode
6 - Safety valve
7 - Air relief valve
8 - Circulation pump
9 - Adjustment of the operating mode of the pump
10 - Gas part
11 - Pressure gauge
12 - Boiler control panel
13 - Device for powering the system
14 - Secondary heat exchanger
15 - Nameplate for warranty on the boiler
16 - Pressure switch
17 - Ionization electrode
18 - Temperature sensor of the heating circuit
19 - Emergency temperature sensor of the heating circuit
20 - Air damper
21 - Differential relay
22 - Air suction into the boiler
23 - Emission of combustion products
24 - DHW temperature sensor
25 - Filter
26 - Flow meter

Features of wall-mounted gas boilers Bosch Gaz 6000

Boilers of the WBN 6000-24C series are equipped with two heat exchangers. The primary heat exchanger heats the water in the heating circuit and is made of copper. Thanks to a small secondary heat exchanger, running water is heated in the hot water circuit.

Bosch Gaz WBN 6000-24H single-circuit models have only one - the main copper heat exchanger for heating water in the heating system.

The hydraulic part of the boiler is made of high quality copper. The expansion tank has a volume of 8 liters, which is quite enough for a classic single or single heating system. two-story house with aluminum radiators and polypropylene pipes with a diameter of 25 mm.

Bosch double-circuit gas boiler device

The main components of the boiler are quite high quality, but are not "native". For example, in the photo above we can see that even the built-in circulation pump in this wall-mounted gas boiler from a well-known German company " Wilo».

The boiler is equipped with a "winter-summer" system, which helps to save gas at various weather conditions. There is frost protection, pump blocking protection, a gas control system, as well as weather-dependent automation.

It should be noted that the temperature is set using the buttons on the control unit only for the coolant. But there is the possibility of setting to set a more accurate air temperature in a room or house.

Do not also forget about the purchase, which will help save the boiler's electronic board from power surges. As well as the Albatross or Radel systems that protect the boiler during a thunderstorm. They are inexpensive, but they will save you from more serious problems with a wall-mounted gas boiler.

Double-circuit gas boiler Bosch: specifications

Technical characteristics of Bosch gas boilers

What are the advantages of Bosch wall-mounted boilers

– quality of materials
- low noise during operation
– low price from 400 Euro
- European brand

Disadvantages of Bosch gas boilers

- the company is not a manufacturer
- non-original parts
- narrow model range
- a small number of service centers

The Bosch wall-mounted gas boiler is a good “anti-crisis” option for people who prefer a well-known brand for little money. A standard set of functions and components make boiler models of this brand quite competitive in the Russian market.

However, if you prefer, first of all, quality from the manufacturer, as well as service, then I would recommend buying a gas boiler from companies that specialize in the production of only heating equipment. They usually have better service for boilers and a wider range of models. Let's watch the video.

Today we made a review-review on Bosch gas boilers, considered both the internal structure and its technical characteristics. Despite some of the disadvantages of the boiler described above, in general, this brand is worthy of the attention of consumers, moreover, with different financial wealth.

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Bosch boiler repair

Those who use the Bosch WBN 6000-24 C gas boiler, please tell me about the hot water supply. Is it comfortable? What is the delay in submission? Doesn't it scald with boiling water in the first seconds? And if, while taking a shower, the faucet in the kitchen opens, does it keep the temperature stable?

If the boiler was running on CO before turning on the DHW, the first 20 seconds is very hot. If standing, delay up to 1 min until the temperature stabilizes. Taking a shower alone, provided that no one else turns on hot water, is comfortable. Under other conditions, temperature fluctuations are inevitable.

I can’t understand the reason why the Bosch 6000 double-circuit stopped clocking. It picks up the temperature indicated to it and keeps it constant. At the same time, sometimes, often at temperatures above 65 °, something "hisses" in it for several seconds, as if air is being vented.

I have the same. But my unit is 5 years old. I scored 60 and works for a long time at the minimum wage (ideal for wall makers). At maximum speed, it hisses (on hot water), as if the heat exchanger is boiling. I'll wash it in the summer if it survives.

Need a gas boiler: single-circuit, wall-mounted, 24 kW, closed burner, with the possibility of cascade connection, tell me the Bosch model?

Bosch only has a GAZ 7000 and condensers are assembled in a cascade. In fact, if desired, any model can be assembled to work in a cascade. Units that have this feature integrated into their brains can initially work in a cascade without any additional gadgets. For the rest, you will have to buy an "extension", additional brains. Cascade controllers are called. Automation of the 7000th supports cascade, but without a cascade module, the ICM will not work. Like models from other manufacturers that can be cascaded, additional modules are required.

Bosch boiler 6000 24 kW, single-circuit with built-in three-way valve. Does not see the boiler sensor, gives an error. Tell me how to make it not give an error and work normally both for heating and for the boiler?

Call a specialist to register the parameters in the service menu. Well, or try to pull it out of the socket and turn it on, it can decide itself.

At the inlet to the Bosch Gaz 4000 W ZWA 24-2 A boiler, the DHW water consumption is 10 l / m. Outlet 2l/m. Where does it go? When the heating is switched on, the DHW is heated. One cannot be related to the other, how is it related?

Bithermic heat exchanger, heating water when the heating is on is logical. Start by checking the filter in front of the flow sensor - it happens that it helps. If not, then the heat exchanger needs to be flushed.

EA error on the display of the bosch 6000 boiler. The flame lights up on all lamellas, but the unit stubbornly does not see the flame. In the settings, the ionization current is 0. Only the complete removal of voltage from it helps. It is noticed that the error pops up only when the temperature overboard drops below 0. At positive temperatures, this has never happened (except for cases when the burner did not actually light up). I will try on your advice to change the fan stage to 5. But I do not see any connection between the stage and the failure of the board (firmware). On firmware version 245.05 they say there is no such glitch. I would also like to find the firmware itself, I have programmers.

I corrected it as follows: I was advised to turn the plug in the socket upside down, as they explained - for the automatics of the boiler, the position is fundamental, at first I tried to turn the plug in the stabilizer - it did not help, then I turned the stabilizer plug in the mains socket. The device has been working without shutting down for more than a week.

Tell me, the Bosch gaz 4000 w zwa24-2a boiler. Is it possible to connect automation to it so that it maintains a comfortable temperature in the house?

Can. Any, with dry contact (without voltage) - for gas units.

I bought a 12 kW Bosch-6000 boiler for my dacha, connected it to a gas tank. Accordingly, propane-butane gas. Household devices have not previously had to be launched. Installed LPG injectors. I switched the gas type in the boiler setting. The fan stage was set to 3. The chimney is coaxial, length 2m 40cm. The gas pressure at the inlet is 30 mbar. When trying to start, the gas pressure does not drop, it remains normal.
The boiler does not start. When you try to start the spark beats, the fire lights up, but then some valve clicks and the fire goes out. There are several exactly the same launch attempts. And the EA error appears - the flame is not detected. Several times I bled air from the highway, I followed all the points of the instructions. What could be, where to look? By the way, how does this unit determine whether there is a flame or not? optical sensor No, I didn't find it at least.

The unit detects the presence of a flame by the ionization electrode, which, when heated by the burner flame, generates a small current. As you were told the ionization current. First of all, I would check the contact of the wire on this electrode and on the board. The second thing is how the electrode itself is installed, whether the flame hits it during ignition. And the third option, adjusting the burner with adjusting screws. Turn the screw to increase the minimum flame. It may be that the boiler switches to minimum combustion immediately after ignition and simply goes out because the flame is very small. If it turns out to ignite, then it will be possible to adjust according to the instructions to the required pressure.

Error C4 came out, dismantled the boiler, eliminated the error, but several questions arose.
1) Perhaps the blower fan is not fully screwed in, is it supposed to be like this?
2) The tubes from the differential relay go on top of the plate, and mine is under it. What is right and best?
3) When starting the unit, the passport says that the fan stage should be set to 12, and the gasman said so. And I have 5 in the instructions, although they are the same, which is correct and better?

If you wash the filter, it should work.

Tell me, please, where to buy a pressure switch 94/74 for ZWA? The device is cut down constantly due to a pressure switch error. I blew, cleaned, checked the pipe twice. It seems to have worked. Turned off again 5 days ago. Ice on the pipe. I insulated the pipe and changed the slope. There has been no frost since. The condensate all flies out. Yesterday it started turning off again. It works stably only in 4th gear, when the heating is constantly boiling. If you turn it down, then after a few cycles it goes out again with the same error. I'm assuming it's a relay.

Maybe condensation got on the contacts.

As I understand it, with a double-circuit boiler, cold water can not be brought to the shower at all, but the temperature can be regulated by pressure. Bosch 24 (in my case) gives out the temperature, with the hot water tap fully open, no more than 28 g (supply 25 ppr, outlets 20). Is that how it should be?

The unit must maintain the set temperature if the flow rate is in the range of 2.5 -11 l / min. With the tap fully open, the flow rate may be higher, and therefore cannot heat.

Tell me, is it possible to connect a BKN to a dual-circuit Bosch 6000 or only to a single-circuit one? And what are the features of the connection, we put a three-way valve for heating, it is controlled from the boiler sensor. But how to let the unit know so that when switching to the boiler, it would give out all the power and, most importantly, what to do with the DHW circuit, turn it off or need to be connected somewhere?

Technically possible. The main thing is just the first thing, you can let the boiler know about switching to DHW only through the flow sensor, but there are not simple contacts, but a Hall sensor, and you need to somehow simulate the flow. The flow sensor is on the DHW, and the boiler will be connected to the heating circuit, through a three-way valve, like a single-circuit one. It is only necessary to give the device a command that it would give out all the power. He receives this command through the DHW flow sensor.

How often does a turbocharged boiler turn on? I have it at 50 gr., heats up to 54, then cools down to 46 and starts up again within 20 minutes.

Install a room thermostat, then it will turn on according to the temperature in the room, and not according to the temperature of the coolant. Without a thermostat, of course, it will turn on more often.

My boiler temperature is set to 50 degrees. It heats up to 54, then it stops heating and the fan turns on and cools down to 50 -49 gr. Is that how it should be or not?

This is normal, only it is not a fan, but a pump inside it, which drives the coolant through the heating system. And the coolant in your radiators and underfloor heating cools down. The overrun time of the pump is set in the service menu of the unit.

Tell me if this is normal - the indicators of the heating system and the summer mode are on at the same time. Boiler Bosch WBN 6000 24H RN. Installed by the master from the asc, 2 weeks ago. Both icons are on from that moment - I thought it should be so.

The framed mode is active, i.e. in this moment- heating.

It seems to me that protection should be precisely the presence of coolant circulation. Regardless of whether there is gas or errors in the boiler. Right?

No. The unit must be turned on and without errors. It can stand in standby mode, and turns on itself when the temperature drops below 5 degrees, heats up to 40 degrees and so on.

I heard that BKN crashes into the heating system through a three-way external valve or a loading pump, or both. They are controlled by BKN automation. What is BKN automation? What will control the loading pump and bring the burner to maximum?

BKN is an indirect heating boiler. Automation BKN - boiler thermoregulation automation. Connected to 220V. It has a thermal switch to turn on the pump and drive the three-way valve, as well as, depending on the modification of the heating element. Naturally, the boiler will give out the temperature that is set for heating. This will just slightly increase the heating time of the boiler.

Can someone explain the instruction point: Set the pre-pressure in the expansion tank according to the static height of the heating system. How to understand what pressure to set in the tank? Or leave the factory?

If the house, for example, has 3 floors, the expansion tank is on the first floor, the height difference between the upper point of the SO and the RB is 7m, then the static pressure is 0.7 atm. We pump the expansion tank by 0.3-0.5 atm. more than static pressure. If the system is all at the same level, then 0.5-0.7 in the Republic of Belarus is enough.

Question about the circulation pump for Bosch WBN-6000 single-circuit. In my opinion, it buzzes too much and there is a slight vibration. Vibration and hum are not very strong and come from the circulation pump, and not from the turbine. At the same time, another circulation pump for the BKN heated towel rail works nearby, which works absolutely without noise and vibration. I think something is wrong with the pump. But it makes no sense to call someone, because for sure the noise is within the passport norms and the water circulates normally. But the noise is annoying. In this regard, what I think to do: In order not to disassemble anything and not lose the guarantee, put your own pump at the outlet from the boiler, take power from your own pump. And the native is simply de-energized.
The only thing that worries me: I read somewhere that there is a small “snail” on the boiler pumps and that these pumps, when turned off, give much more flow resistance than a conventional pump. Is this true for the WBN-6000 pump? A normal pump is supposed to work just fine. Does anyone have any information?

Try to bleed air from the pump. Unscrew the central screw.

Tell me, please, does the WBN 6000 single-circuit DHW priority change over heating, if so, how. I did not find it in the "engineering" menu. And what priority is set from the factory.

Priority from factory to DHW. Most likely it doesn't change. Yes, this is not necessary. The 120 liter tank heats up in minutes.

Please advise on the double-circuit boiler Bosch Gaz 4000 ZWA 24-2A-23. I am considering this bithermic apparatus to replace another 2-circuit with a plate heat exchanger. As a result, questions arose:
1. The instructions say that it is forbidden to use with thermostatic regulators on radiators. I have one of these, but connected to a one-pipe system. How critical is it if you unscrew the adjusting heads to the maximum?
2. The CO is built in such a way that water is constantly pumped through the boiler by external pumps. That is, when it works on hot water supply, part of the heat will go to CO, right? Can it happen that the required temperature will never be obtained in the DHW?
3. The instructions say that priority is set to DHW. How is this physically implemented in such models - when a flow occurs in the hot water supply, the burner gives less heat?
4. Now the BKN is connected to the DHW outlet of the boiler with circulation pump switched on from the temperature sensor on the BKN. Can ZWA work in the same configuration? The reason for the replacement is that the temperature drop does not suit when the DHW circuit is turned on, i.e., the heating of the BKN. Electric power is only 5 kW, so I do not count on it.

It will be the same. The burner gives more heat. DHW priority means switching to DHW mode when the flow sensor is triggered, regardless of the current state, heating operation or standby mode.

Bosch 6000-24 boiler malfunction. Installed and connected at the end of October 2014. That is, it has been in operation for 5 months and from the very beginning, as the temperature outside began to drop below 0, we have problems with it. At first it gave the Err Error - at the set degrees 50-55. As they started to set 65, the problem disappeared (of course it was hot, but I opened the windows). That is, the flame was blown out due to the fact that it was not high. Now frosts have come, it reaches -25 at night and once a day in the morning at such temperatures, the boiler gives C4 errors first, the next day C6. Called the gasmen. They stated that it freezes due to the fact that it was developed by Europeans and is not adapted to such frosts and winds. There are no solutions except
remove the gasket in the coaxial pipe at the junction of the elbow and the pipe so that it partially takes warm air from the room. But I think that this will not solve the problem, but will only add another source of draft to us, of which we already have enough due to the lack of window sills and slopes.

Errors C4 and C6 indicate a differential pressure switch and a fan, did the repairmen check this?
"The boiler is freezing" is some kind of not very serious conclusion.
C4 - The differential pressure switch does not open when the fan is off.
Check differential pressure switch.
C6 - Differential pressure switch does not close.
Check the fan and its cable with plug, replace if necessary.
Check differential pressure switch and flue pipes.
Is the fan stage set correctly?
If the differential relay is working properly, it is possible that condensation in the chimney prevents its normal operation. That is, you need to try to exclude condensate (from simple insulation of the chimney with mineral wool to the installation of a condensate drainage system). And I would also try to increase the coolant temperature to at least 75 degrees (especially in severe frosts) and connect a simple relay thermostat to the device so that there are no tropics in the house. If you could get to the differential relay, then remove the jumper on the control unit and connect a thermostat instead, then you can do it.

The situation is as follows: a couple of days ago, I finally connected the gas and the representative of the gas company started the boiler. At startup, he measured the grounding and said that it was not very good, 220/130, if I'm not mistaken (I don't understand electrics). So, as a result, the boiler gives an EA error about 7-10 hours after start-up, and it does not turn on by resetting the error. Moreover, you can hear how the flame lights up, you can see how the temperature rises by 10-15 degrees, but the flame icon does not appear, so it tries to start three times, then again gives an EA error. You can only start by pulling the plug out of the socket and inserting it back. Gas workers say to do normal grounding. The question is: is it really
does it have to do with grounding? Or should we look in a different direction?

Grounding probably has nothing to do with it. Although the opinion of the gas workers is reasonable, since this error is related to the operation of the board. My boiler without grounding gave this error, and so it works fine without grounding. So far, there is only one solution - to reflash the board (in Bosch services they are well aware of this error). Or set the fan operation level to 5. This is easy to do yourself through the menu. The decision came by chance because the cause of the error is not fully understood, but the truth is that no one has yet refuted this method of solving the problem.

Malfunction of the Bosch Gaz 6000 W-12 gas turbocharged boiler often causes an EA error - Flame not detected. The unit turns on and works without problems. I worked all winter at 75 degrees and only three times I gave such an error. With warming, I set it to 45 degrees and the error began to pop up every day and sometimes 2 times a day. In general, up to 50 degrees, the error often displays, over 50 degrees rarely. Before giving an error, the flame icon disappears. It tries to start again, makes the first attempt (unsuccessfully), then the second ignition attempt, and so on 5 times and then issues a blocking error EA. When you try to ignite, you can really hear how the gas flashes and goes out and there is no icon (flame). I reset the error by holding the OK button, the icon (flame) does not appear and it again makes 5 ignition attempts. I fix this problem like this - I reset the error and turn it off for 5 seconds, then turn it on, and everything works and the icon (flame) is present. But how long it will work without giving an error, you can not guess. At a low temperature, it can give an error in an hour, or it can work normally for two days. Well, as I wrote above, that at over 50 degrees, an error rarely happens.

1) Gas pressure.
2) If the gas pressure is normal, try swapping the wires (ionization electrode and ignition electrode), sometimes this helps.
3) If not, then change the board, or reflash.
With a similar error, EA adjusted by increasing the fan stage from 2 to 5 (In the service menu). I think the error was due to the fact that the fan did not have time to provide fresh air to the device, so without air it went out. My chimney is 0.7 meters long into the wall. The channel is not narrowed by any gaskets, but it is slightly narrowed by a clamp at the junction of the corner element and the straight pipe, since its design is very strange.

In operation wall-mounted boiler Bosch Gaz 6000. Worked for a couple of months in summer mode. Turned on the heating - it works, but the temperature of the coolant is not adjusted above 50 degrees. But the most interesting (bad) thing is that it does not allow you to enter the service menu. Pressing + and - at the same time does not react in any way. Who knows what to do?

You press plus-minus and the cancel arrow. Waiting.

Bosch 24 boiler malfunction (2-circuit). Periodically gives an error EA - does not see the burner. What is the problem?

The gas mixture is not supplied in the proper volume or pressure. The EA error is solved by the speed (stage) of the fan, the minimum gas supply, rarely by replacing the control board.

There were questions about setting up and adjusting the boiler. During commissioning, the service master did not check the pressure on the injectors and naturally did not set it. So the question is: by reducing the power in the parameters - did I reduce the pressure on the injectors or what? Does the device come from the factory not configured according to the table in the instructions? Or should the pressure be set according to the required maximum power for each house?

1. By reducing the power, you reduce the gas pressure on the nozzles. But it's better to do it with a pressure gauge.
2. The boiler is set at the factory at mains pressure, if the memory does not change 13 mbar. If you have more, then the pressure on the nozzles will be greater, so you need to check it during commissioning.

The Bosch 6000 gas boiler is in operation. There is a malfunction in the control board. Stores heating parameters. The temperature was set to 55 degrees. Because it's warm outside. Reduce the temperature by 40 degrees. The next day, the temperature of the coolant is also 55. Having set the temperature to 40 degrees, I turn off the power of the device, turn it on and again the temperature of the coolant is 55 degrees. Also, by turning on the summer mode, after turning off the power, it turns on the heating. Reset to factory settings. Did not help.

Parameter 2.9A is set to "2" and should be "0". The second level of the service menu L2.

We changed the control board on the bosch wbn 6000-24c boiler. After switching on, the boiler gives an error "P" - "The boiler type is not defined." To determine the type, you must use the service function 3.1.a. When calling the function, one of the presented values ​​can be selected: 0, 20, 21, 30, 31, 32, 40, 41, 42, 50, 51, 52. Tell me, if anyone has come across, what value should be set for this model.

For this modification of the unit, the value of the parameter must be 31.

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Heating system control. Mounting. Connection. Transfer to another type of gas. Control devices and protection devices.

Peculiarities. Installation and installation. Automation components.

Technical specifications. Mounting. Adjustment and verification. Maintenance.

regulation and protection. Installation and installation. Pressure setting. Maintenance.

There was a problem after starting. It doesn’t want to turn on, it worked for two years, now the whole display lights up as if the boiler was turned on, when the self-diagnosis mode is on, then it clicks, turns off for miles and seconds and turns on the entire display again. It turned on once, but gives an error E10 water pressure, although the pressure in the system is 1.5 atm. Tell me what can be?

We installed and connected the Baxi Fourtech 24 F boiler. What is the pressure cold water allowed at the inlet to the DHW unit?

Bosch boiler 6000 24 kW, single-circuit with built-in three-way valve. Does not see the boiler sensor, gives an error. Tell me how to make it not give an error and work normally both for heating and for the boiler?

If you turn off the DHW flow sensor, then maybe it will be possible to reprogram it into a single-circuit device through the L3 menu?

Installed boiler Arderia esr 2.13 ffcd. If my coolant pressure drops a little in 2-3 days by a couple of divisions, can the three-way valve malfunction be the reason (there are no leaks from the radiators)?

In operation, the gas boiler Arderia 2.35. Tell me about power reduction. Heard something about modulation, fan speed and so on. Is it really possible to reduce power?

We installed and connected the Buderus Logano G234-WS-44 kW boiler, Logomatic 4211 automation. Heating on cylinders without hot water supply, jets for reduced gas were also replaced. We survived the winter, the cylinders were replaced, all without problems. Then in the spring, when the temperature outside was +16 + 18, the boiler began to turn off for a long time and, when turned on, it began to give a burner error on the screen and a red button light on the front wall lit up. We pressed the button, turned on the power again and everything worked. It happened several times, then the boiler was completely turned off for the summer, what could be the problem?

In a single-circuit Buderus 072, is the BKN coil circuit heated by the same heat exchanger as for heating or the same as on a 2-circuit one that is used for hot water supply?

Tell me, for Vaillant wall-mounted gas boilers, are there any real / actual differences for the better in the new generation turboTEC plus VU / 5-5 compared to / 3-5?

The boiler is malfunctioning, the green LED (power) is flashing, the instructions say that the thermal protection has tripped, the green indicator is flashing, even if nothing is connected to the board. How to fix? I checked all SMD resistors and transistors, everything is in order.

In operation, a double-circuit gas boiler Daewoo Gasboiler with an electronic panel. When the hot water supply is turned on, the heating is heated, the operating mode is summer. Removed the three-way valve, there is no dirt and no production. It seems that the board does not control the three-way valve. How to check?

Installed and connected wall-mounted boiler Electrolux Basic Xi. A problem began that the boiler stopped seeing the flame and turned off the gas supply after 7-8 seconds. And after 3 attempts gave an error E1. How can I fix it?

Koreastar boiler malfunction. Heating works great, hot water is coming intermittently, when you turn on the hot water tap, cold water comes first, then boiling water. After a few seconds, cool, then again boiling water. What could be the problem?

Malfunction of the ferroli domiproject 24 boiler - I set it to 60-70 degrees, it switches to minimum combustion, does not turn on, does not turn off. Restart is unstable. No pattern emerges. What to do?