Gas boiler Bosch error fd

Bosch boiler errors

Error A7. Hot water temperature sensor has a malfunction.

Error AD. The temperature sensor of the boiler is not determined.

Error C1. The fan rotates with a low frequency.

Error C4. There is no opening of the differential pressure relay with a non.Working fan.

Error C6. There is no closure of the differential pressure relay.

Error C7. The fan does not function.

Error CE. Small pressure to fill the heating system.

Error D7. There is a malfunction of the gas reinforcement of the wall boiler Bosch 6000.

Error E2. Malfunction or breakage of the temperature sensor on the feed line.

Error E9. Drimination of the temperature limiter of the heat exchanger.

Bosch ZSC / ZWC 24 MFA gas boilers error codes

boiler, bosch, error

A7. Hot water temperature sensor is faulty.

Check the presence of damage or short circuit of the temperature sensor and its wire, replace if necessary.

Check the connecting cable and regulators.

A9. The hot water temperature sensor is incorrectly set.

Check the installation area,, if necessary, dismantle the sensor and re.Install it using thermal conductive pasta.

Check the boiler sensor and connecting cable.

Correctly insert a coding plug, measure it and, if necessary, replace it.

C1. During the operation of the device, the differential pressure relay was opened.

Check the differential pressure relay, exhaust device and connecting pipes.

C4. Differential pressure relay in a non.Working position does not open.

Check the differential pressure relay.

C6. The differential pressure relay does not close. Check the differential pressure relay and pipe of the drain of smoke gases.

D3. No jumper 161 was found on ST8

If there is a jumper, insert the plug correctly, check the external limiter. In another case: is there a jumper?

D4. Too much temperature difference.

Check the pump, bypass hose and pressure in the system.

E2. The temperature sensor in the feed line does not work.

Check the temperature sensor and connecting cable.

E9. The limiter in the feed line worked.

Check the pressure in the system, temperature sensors, check the operation of the pumps and the fuse on the electronic board, remove the air from the device.

EA. Bosch ZSC / ZWC boiler does not fix the flame.

The gas crane is open? Check the pressure in the gas network, network connection, starting electrode with a cable and an ionization electrode with a cable.

Check the strength of the connection of electrical plugs and launch lines, if necessary, replace the electronic board.

F7. Although the boiler is disconnected, the flame is determined.

Check the electrodes and cable. If the drain of smoke gases works, check the electronic fee for humidity.

Fa. After turning off the gas supply, the flame was found.

Check the ionization electrode. Check gas reinforcement.

FD. The button was mistaken for too long (more than 30 seconds).

Click on the button again less than 30 seconds.

CC. The outer temperature sensor was not detected.

Check the outer temperature sensor and the connecting cable for the lack of damage.

Malfunctions of gas boilers Bosch

Check the operation of the emergency switch of the heating system. If necessary, then turn on.

Check the operation of the start switch of the control system. If necessary, then turn on.

Inspect safety machines. Check their performance, if required, replace a faulty machine.

Inspect the temperature controller of boiler water temperature. Check, if necessary, replace the faulty part.

Defective temperature limiter is faulty. Check, if necessary, replace the part.

A signal of error from external safety devices appears (for example, from the safety device of monitoring the amount of water). Check the heating system, eliminate errors, if necessary, replace the faulty device.

Котёл Bosch 6000. Как включить отопление. Как поднять давление в котле.

Bosch boilers error codes. Recommendations to eliminate breakdowns

Error code EA. Shows that there is a malfunction of the ignition device. The signal is supplied from the flame control sensor. This element reveals the presence of a flame and interrupts the functioning of the Bosch GAZ gas boiler during limited burning of the main gas.Regulatory device or in cases of a gas supply failure.

The operating mode is terminated at the end of three unsuccessful starts. To resume the workflow, you need to press and hold the Reset button.

Violation of gas valve functions. The actions of the gas valve controls the electronic board. Diagnosis of this part is carried out by determining the voltage and resistance value. If it reveals that the values ​​diverge from the nominal characteristics, it is necessary to replace the valve.

There is no gas supply to the system. A valve is placed in the gas distribution system, which limits the influx of gas fuel. Therefore, a problem at the time of starting the unit may occur due to the closed crane.

Insufficient contact or a signal from the flame control sensor has not been detected.

Management problems. Когда процесс разжигания произошел нормально, однако прибор в любом случае моментально погасает, то по всей видимости, электронная плата не определяет пламя. Based on this, you need to check it.

Error E9. Problem with overheating heat exchanger boiler Bosch 6000. The unit stops working.

The thermostat of protection against overheating has turned on. The temperature sensor and the thermostat of overheating are most often placed on the output pipe of the primary heat exchanger. The functional task of the thermostat. Protection of the device from elevated temperature. The malfunction most often occurs due to problems with the thermostat, temperature sensor, and in addition, in case of violation in the work of the main circulation circuit.

The temperature sensor failed. An incorrect signal comes to the electronic board or the contact between the sensor and the electronic board is violated.

Damage of the thermostat overheating. When the component is suitable for work, but the real overheating of the liquid is determined, then, probably, a problem with the circulation of the coolant of the heating circuit arose. There is a blockage in the primary heat exchanger or a filter of the main circuit (lack of circulation means an increased heating temperature of the coolant).

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The circulation pump was out of order or a blockage from the air in the heating system arose.

Error code CE. Is a sign of pressure insufficiency in the system.

Probable sources of the appearance of this problem: the small pressure of the water in the heating circuit. Contact between the electronic fee and the press startup is violated. Menimal pressure relay malfunction.

First, check the settings of the manometer. Very often the problem can be eliminated using a feeding tap, which is intended to fill the fluid of the heating system.

When the failure occurs again, then apparently, there is a leak of water. The hydraulic pump, the primary heat exchanger, the discharge valve from excess pressure, the worn elements of the seal, the feed valve and other parts can flow. A leak can be determined during the inspection of hydroelectric machines and components.

Error code C6. Unsatisfactory traction.

For the correct and reliable operation of the gas boiler, it is recommended to ensure a traction for the removal of the exhaust gases so that they do not get into residential premises. The gas output is controlled by automation, and if any problems are happening, the traction sensor will turn on, and the unit will stop working.

Probable sources of lack of traction: small.Sized diameter of the smoke.Voltage canal The wrong structure, blockage, ice on the inner wall. Limiting the diameter of the output channel leads to weak traction.

The maximum length of the chimney pipe is exceeded. It is recommended to carefully work out the installation of the gas boiler and fulfill the relevant requirements. A fairly long horizontal segment of a smoke.Sobbing pipe causes a weakening of the necessary traction.

Damage to the traction sensor. When exposed to discharge in the supply tube, you can catch a characteristic click. Bad contact between the traction sensor and the electronic fee, there is condensate, as well as poor connection of the tubes to the Pneumorela sensor.

Code C7. Problems with the fan. The fan impeller was clogged. There is no sufficient amount of lubrication on the shaft of the fan, respectively, the necessary speeds are not produced. The contact between the electronic board and the fan is violated.

Газовый котёл Bosch Gaz 6000 инструктаж пользователя

Error code A7. Refusal to determine the temperature sensor of the hot water.

This code shows that the hot water supply temperature sensor is broken or the required temperature is exceeded.

The main reasons preceding this problem: the thermal attribute for hot water supply was damaged. Poor contact between the electronic board and the temperature sensor of the hot water. Office failed.

If the temperature sensor of the DHW is a worker and is securely attached to the electronic fee, but at this moment the boiler highlights the error, then perhaps the electronic control board is not operational.

Error code FA. Problems with ignition.

This can be issued when the ignition does not work or the flame of the burner flame occurs.

It is necessary to check the contacts between the ignition device, and the flame sensor, and also between the gas valve and the board. The main reason for the breakdown of the flame may be insufficient thrust.

Error code E2. The temperature sensor for the heating system works incorrectly.

This circumstance means that the temperature sensor in the heating system is faulty or the operating temperature is exceeded.

Rupture in the chain of the heater. Such a malfunction occurs when the connection of the temperature sensor with the control board is disturbed, or the temperature is below the recommended.

Five seconds after determining the malfunction, the boiler boiler Bosch Gaz should return the working functions if the malfunction occurred spontaneously. Make sure that there is no moisture on the connector of the sensor and the control connector in the absence of moisture, the temperature sensor should be replaced.

A short circuit of the heating contour occurred. Such a problem occurs at the time of a short circuit of the contacts of the temperature sensor or the value of the fluid temperature above the recommended. The temperature controller resistance is originally required.

Bosch Gaz 6000 boilers errors

The list below presents faults specifically for Bosch boilers of the GAZ 6000 series. Determine the error code and eliminate problems in a timely manner.

Error code E2 is a malfunction or a tint sensor break on the feed line

Check the sensor for the presence of a defect, as well as a possible short circuit of its wire. If required, replace.

Error code E9. Triggering the temperature limiter of the heat exchanger

  • Check the temperature limiter for the presence of a defect, as well as a possible short circuit of its wire. If required, replace.
  • Check the working pressure in the heating system.
  • Check the temperature limiter, if necessary, replace it.
  • Check the launch of the pump. If required, replace the pump.
  • Check the fuse, replace if necessary.
  • Remove air from the Bosch 6000 gas boiler.
  • Check the water circuit of the heat exchanger, if damaged, complete the replacement.
  • Check the temperature limiter of the flue gases for the presence of a defect, as well as a possible short circuit of its wire. If required, replace.

EAA error code. No flame

  • Check the connection of the wire of protection.
  • Check the opening of the gas crane.
  • Check gas supply pressure. If required, eliminate the problem.
  • Check the connection to the electric network.
  • Check the electrodes and wires. If required, eliminate the malfunction.
  • Check the removal of smoke gases. If required, clean or repair.
  • Set the gas. If required, eliminate the malfunction.
  • For natural gas: check the gas stream control relay. If required, eliminate the problem.
  • When using air intake for combustion from the room, check the air traction into the room and the ventilation openings.
  • Clean the heat exchanger.
  • Examine gas reinforcement. If required, replace.

Error code F7. Definition of flame with a disconnected boiler

Although the boiler is disconnected, the flame is determined.

FA error code. Detection of flame after disconnecting gas supply

After turning off the gas supply, the flame was found.

  • Check gas valves, replace if necessary.
  • Check the electrodes and connecting wires, if necessary, replace.
  • Check the system of drainage of the smoke gases, if necessary, clean or repair.

All the main errors and their decryption codes

Consider the main errors of Bosch gas boilers:

The code Decoding
A7 The malfunction of thermoresistor of the hot water
A8 The connection with the Bus-Shina has disappeared
A9 Incorrect installation of thermoresistor of the hot water
AD The control board does not see the boiler sensor
B1 The encoding plug is not determined
C1 Refusal of a differential pressure relay during operation
C4 The differential pressure relay does not open
C6 The differential pressure relay does not close
D3 Lack of jumper 161
D4 Great temperature difference
E2 Refusal of the thermoresistor of the direct line of the heating circuit
E9 The temperature limiter of the straight line of the heating circuit worked
EA Electronics does not see a flame
F0 Internal malfunction
F7 Electronics records flame, although the boiler is disconnected
FA Flame was found after overlapping a gas valve
FD By mistake, the button was kept pressed for more than 30 seconds
SS No outer temperature sensor
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Some boilers released at different times may have their own error encoding. To clarify, you should check with the instructions, where there is a complete list of designations of existing designations.

And your house has a boiler Baltgaz at your house? Whether you have errors appeared and how you coped with their elimination? Share your experience in the Комментарии и мнения владельцев and ask the article of interest.

The rules and specifics of the decoding of errors are extremely useful information that allows you to quickly respond to all possible violations in the boiler operation. Nevertheless, the first to encounter all types of failures will have to face the owner. Him and make a decision on further actions.

Bosch 6000 boiler errors. What is it, how to fix it?

Gas and electric boilers are used to heat various rooms, including country houses and cottages. Such equipment is installed and configured by qualified masters, but despite this, many users eventually begin to face certain errors. Before starting the operation of the heating device, it is advisable to carefully study the instructions, as well as get acquainted with possible failures. This article will examine in detail the possible mistakes of the boiler Bosch 6000. In addition to a simple description, we will talk about the principle of eliminating each of the problems.

There are several classifications of boilers from the manufacturer Bosch: a, C, D, E and F. Most often, problems are the result of improper installation or setting up equipment. To eliminate them, it is enough to correctly specify the necessary values ​​or replace a certain part.

Category a

Errors that are classified by the symbol system A are usually the most common. They are associated with incorrectly installed equipment or breakdown in a certain node. Almost always such problems can be eliminated independently, without resorting to the help of masters. The list below presents a description of each error and the option of eliminating it:

  • A2. Indicates the presence of extraneous gases, which are most often located on the combustion chamber. Usually the problem disappears after removing dirt on the heat exchanger.
  • A3. The system did not find a temperature sensor for outgoing gases. Check the correct connection of the wires, and also make sure that there is the most measuring device. One cannot exclude the fact that the temperature sensor simply forgot to connect.
  • A6. Notifies the absence or damage of the temperature sensor that is intended for the combustion chamber. All that is needed is to check the wires for damage and, if necessary, replace them.
  • A7. Indicates a malfunction of the temperature sensor of hot water. Most likely, the measuring device is completely higher as a result of a short circuit. There is only one way out in such a situation. A complete replacement of the sensor and wiring.
  • A9. Hot water thermal attewer is installed incorrectly. Remove it, add thermal paste and install it again.
  • AD. The system cannot detect the boiler thermal attemptor. Check the correct installation of the equipment and, if necessary, consult with the masters.

These errors usually arise as a result of physical impact, so the repair of the boiler does not require large monetary investments.

Categories C, D, E, P and F

These errors are quite rare on the boiler Bosch 6000, but you can also encounter them. As in the previous case. Read the description of the failures below:

  • C6. Pressure relay does not close or damaged. It is enough to remove the relay and remove the accumulated condensate from the tubes. The best hairdryer copes with the assigned task.
  • C7. Check the fan, and if necessary, replace it.
  • C. Indicates too low pressure in the heating system. Когда индикатор находится в красной области, то достаточно долить воды через кран подпитки. If in green, then here you can’t do without the help of experienced masters.
  • D4. Too large temperature difference. You must verify the correctness of the bypass valve and pump.
  • D7. Notifies about the malfunction of gas reinforcement. Most likely, it is necessary to replace the damaged connecting wire.
  • E0 are problems with the board, so it is better to contact the masters or replace it yourself.
  • F0. Internal malfunction. Check the density of connecting the plugs and wires to the board.
  • P. The type of boiler is not installed. In the case of Bosch 6000, it is necessary to enter the value of 31.
  • SE. Notifies that the heating system is not filled with water enough. Try adding liquids, as this is usually enough.

The main mistakes appeared on the boiler Bosch 6000 were presented here. If you do not understand the repair of such equipment, then it is better to contact specialists.

EA error is not recognized flame.

▶ Check the connection of the grounding wire. ▶ Check if the gas tap is open. ▶ Check the supplied gas pressure, adjust it if necessary. ▶ Check the connection to the mains. ▶ Check the electrodes with wires, replace if necessary. ▶ Check the system of drainage of the smoke gases, if necessary, clean or repair. ▶ Check gas adjustment, fix it if necessary. ▶ for liquefied gas: check the gas control relay, replace if necessary. ▶ When working with air fence for combustion from the room, check the air supply to the room and ventilation holes. ▶ Clean the heat exchanger ▶ Check gas reinforcement, replace if necessary.

▶ Check the pollution of the electrodes, replace if necessary. ▶ Check the system of drainage of the smoke gases, if necessary, clean or repair. ▶ Check the humidity of the electronic board, dry it if necessary.

Heating systems of country and country houses. Boilers, gas speakers, water heaters. Repair, service, operation. Installation and installation recommendations.

The control panel of gas convection boilers BOSCH 6000 W with the data transfer bus Cotronic 3 allows you to control the heating system depending on the room temperature.

For these wall convection gas boilers, two types of Bosch regulators are recommended.

Programmable room temperature regulator OpenThermtm CR12005

TRZ 12-2 room temperature regulator

Malfunctions shown on the Bosch 6000 boilers display

A7. Hot water temperature sensor is faulty.

AD. The temperature sensor of the boiler is not identified.

C1. Low fan speed.

C4. The differential pressure relay does not open with the fan disconnected.

C6. The differential pressure relay does not close.

CE. Insufficient pressure on the heating system.

D7. The gas reinforcement of the wall boiler Bosch GAZ 6000 W is faulty.

E2. The temperature sensor of the feed line (break) is faulty.

E9. The heat exchanger temperature limiter worked.

Heating systems of country and country houses. Boilers, gas speakers, water heaters. Repair, service, operation. Installation and installation recommendations.

We have such a problem. Bosch boiler is double.Optical, we use only six months. Turned on hot water, but it does not heat up, knocks out the boiler and shows error E9. The filter was cleaned, the device started, but after an hour again turned off. The error shows. When we start, the pressure rises immediately and the unit is cut down. Then we turn it on, the fuses immediately burn and the boiler goes out. We can’t turn on. Please help, what could be the reason?

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Most likely you are jamming the pump. Usually fuses burn due to the pump.

Bosch Gas 6000w boiler. Was purchased in August this year. As a sharp cooling came, it turned off and showed the error C6 (the differential pressure relay does not turn on). After removing the front cover, it was found that the tubes that are approaching this relay were covered with hoarfrost. After drying the tubes, the device started. This situation is repeated several times. Is there any way to get rid of this problem?

You need to watch how the smoke removal system is performed. Separate system often leads to such consequences. We recommend replacing it with coaxial. If there is no possibility of changing the chimney, then the tubes must be insulated.

WBN 6000-24 wall boiler. Gas. Natural. An error EA has been appearing for a very long time. After reading about EA error, I decided to find out the firmware of the board and set the fan steps. If in the menu the version of the software issues “245-03” and as if it does not raise questions, then the menu of the fan steps showed the number “17”. Horizontal chimney system with a concentric pipe. A way out of the boiler is about 2 meters. No adapter for air intake from the inside of the room is installed and air enters the unit outside the room. What the masters were guided by setting the 17th stage of the fan, although, judging by the instructions, you need the 2nd level. Do I need to change the fee?

The adapter is not needed. You have a standard coaxial with air fence from the outside. Helps to get rid of this error setting the fan step in value 5. I had the same thing, and when I set 5, for a year now there was no error.

Tell me, the burner involves modulation only when using a thermostat or in some other cases?

Когда температура теплоносителя приближается к установленной модуляции котла включается в любом случае, независимо от того есть термостат или нет, но так как этот процесс занимает мало времени его сложно зафиксировать. If a tender is used, then modulations begin to occur when the temperature in the room approaches the installed. If the thermostat is set “he/off, then there is no connection.

Private house 70m2 300mm foamoblock 50 mm mineral wool and cladding with ceramic brick. The plans for expanding the area by another 50-60 square meters. M. TP 33M2 are installed on the ground floor, heating batteries are mounted on both floors. DHW is implemented by a kitchen and a bathroom, the second bathroom will be in the troubles. I want to put BKN Drazhitsa 125. Since the riser is mounted in my house, I plan to install a wall gas boiler with a coaxial chimney. I am considering different options. The most optimal price is Bosch 6000 (18 kW), but Bosch Gaz 7000 has a minimum power of 24 kW, which, as I think, is too much for me. From an important one, I need that the boiler has the opportunity to set the temperature in the boiler and, in the future, it would be possible to mount a room thermostat and a street sensor. Interested in the difference between these models in composition of components or at the place of assembly? Maybe there are some fundamental differences?

In your case, the most optimal will be the Bosch GAZ WBN6000-18 and WSTB 120 model.

Bosch WBN 6000 boilers error codes

Error A7. Malfunction of the temperature sensor of the hot water. Inspect the sensor for the presence of a defect or short circuit and its wiring. Replace if necessary.

Error AD. The unit cannot fix the boiler temperature sensor. It is required to inspect the boiler thermal attemptor and connecting wires.

Error C1. The fan rotates with a low frequency. Need to check the network voltage. Also inspect the system of output of smoke gases and, if required, clean it or repair it.

Error C4. There is no discovery of differential pressure relay if the fan is disconnected. It is required to inspect Dif. Pressure switch.

Error C6. There is no closure of the differential pressure relay. Check the fan and wires with plugs. Make a replacement if required. Inspect Dif. Pressure relay and pipe of the output of combustion products.

Error C7. The fan does not work. Check the fan and its wires with plugs. Make a replacement if you need.

Error CE. Not enough pressure in the heating system. It is required to pour water.

boiler, bosch, error

Error D7. Malfunction of the gas system. Check the connecting wire. Inspect the gas system and replace if necessary.

Error E2. Malfight temperature sensor on the feed line (break). It is required to check for possible damage or short circuit of the sensor and its wiring. Replace it if you need.

Error E9. The temperature limiter is triggered in the heat exchanger. It is required to check for possible damage to the temperature limiter of the heat exchanger and its connecting wires. Make a replacement if necessary. Check the nominal pressure in the system. Inspect the temperature limiter and change it to a new one, if necessary. Perform the launch of the circulation pump and, if necessary, replace it. Check fuses, change if necessary. Remove air from the unit. Check the water circuit in the heat exchanger. If necessary, replace. Check for possible damage the temperature limiter of smoke gases.

Error EA. No flame. Check the connection of protection wires. See if the gas tap is in the open state. Test the testimony of gas pressure and, if necessary, eliminate. Conduct a check of connection to an electric network, electrodes with wires and, if required, then replace. Inspect the system for output of combustion products, clean or repair. Draw gas adjustment control, eliminate if necessary. For natural gas: inspect the relay that controls the gas stream. Change if necessary. In the process of working with air fence for combustion from the room, check the flow of air into the room and the ventilation openings. Carry out the heat exchanger. Check the gas system, replace if required.

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