Do-it-yourself demrad boiler repair

Thanks in advance. The answer is here = >> The burner does not light up. How to determine the cause? There are no error codes either on the panel or in the Manual. If the boiler is to be replaced due to its malfunction, will the heating system be drained when replacing it?

Open access to the answer = >> Error e2 is on.

The pump is normal, connected directly. The limit thermostat is ringing.

In any case, you need to find out why the movement of the coolant is difficult.

There may be air in the system. Perhaps the boiler has not been

Heats up quickly to 40, the flame is reduced to a minimum and the burner goes out.

I hooked up a 100 Ohm resistor in series with the modulator (76.4 Ohm coil), it began to warm up more slowly (the flame decreased), but still, when it reaches 40, the burner turns off.

What does that mean? In the "instructions" to the boiler it is written that if the DHW temperature sensor is faulty, the boiler continues to work, with the difference that it heats the water when DHW is requested by the sensor at the heating outlet.

The DHW sensor checked - it reacts to the temperature, the characteristic is close to Ariston UNO (20 degrees C - 12kOhm).

It is simply not known what kind of sensor should be in it (boiler). Who will have what opinions?

Heating area 80 sq.m. The boiler does not cycle when the system heats up at 80-85C.

At 30,40,50,60,70 C, it heats the water in the system to the set temperature and turns off. Heats up to 80-85C and continues to burn without switching off!

It is possible to adjust the deviation of the flame (flame height) - there are 3 valves on the gas facility. one of them is closed with a transparent cap.

tighten the brass nut a little - you will raise the flame. But high temperatures of 80-85 C lead to the formation of scale.

Boiler Units Maintenance and Repair Instructions

At home, wall-mounted models of gas boilers are often used.

Such devices are simultaneously responsible for both space heating and hot water preparation.

Install special filters to prevent such damage. The best option is a complete water purification system.

Please share your experience.

in the future I will add descriptions to this post.

- I did not have to deal with this error, but, judging by the name, it occurs when the heating system is depressurized and is solved by eliminating leaks and pumping water into the system to the desired level.

- A misfire occurs when fuel stops flowing to the burner. Fuel supply must be resumed.

- the fuel supply to the burner is stopped or obstructed.

Fuel supply must be resumed.

It is supplied through the boiler. The boiler is equipped with a switch, a thermostat for maintaining the temperature of the coolant and an emergency thermostat. They must all be on for the burner to turn on. The switch is located on the front panel.

The thermostat for maintaining the temperature is also adjustable from the front panel.

Instantaneous heaters that supply hot water immediately after switching on are designed for many years of operation.

This device helps to monitor the state of the draft in the chimney or their outlet to the smoke extractors. In the latter, the sensor heats up and is triggered. It is best if a gas alarm is purchased in conjunction with this sensor;

• The monostat is installed to protect the turbo boilers from poor flue gas removal. May be due to a dirty heat exchanger or chimney;
• Limit thermostat. It controls the water in the boiler. If it boils, then the overheating sensor turns off the boiler;
• Ionization electrode. They are installed to control the presence of a flame.Often, the repair of a heating boiler begins with checking the electrodes, because the operation of gas boilers without a flame can lead to an explosion;

Checking threaded connections

• Disruptive valve. Serves to carry out pressure control.

Question: The Demrad gas boiler heats up to 60 ° and starts to crack loudly. To stop this, you need to close and reopen the water.
The boiler continues to operate silently. Errors are not written. What does this mean? Answer: Extraneous noises when heating water may mean that the heat exchanger is clogged with sludge, its walls are covered with scale, and it needs to be cleaned internally. In any case, you need to find out why the movement of the coolant is difficult.
There may be air in the system. Probably, the boiler has not been prevented for a long time.

Question: In the Demrad floor gas boiler, when it was turned on, a sharp flash of gas appeared, and earlier it turned on smoothly. A 6-year-old boiler is a lot or a little in terms of wear and tear? Answer: If you have a common gas distribution point, a village one, then, most likely, a gas valve misalignment occurred in your boiler.

The result of the work depends on the wear of the gas valve. It may need to be replaced. Question: I myself washed the heat exchanger of the Demrad boiler, and after that the temperature sensor was short-circuited.

Will replacing the sensor help to start the boiler? Answer: It is unlikely that cleaning the boiler is associated with the failure of the sensor. Perhaps it's not even the sensor. Measurements should be made according to the scale of correspondence between the boiler temperature and the resistance of this sensor.
In the service literature for the maintenance of this brand of boiler, you can find such information.

To cope with the first reason, you need to make sure that the room does not smell of gas and check the draft of the chimney. In the event that flue gases enter the room, it is prohibited to operate the equipment.
An urgent need to contact a repair shop.

• Water flow regulator.
• Chimney connection.
• Power control.
• Heat exchanger.
• Water node.
• Exhaust hood.
• Switch.
• Rear panel.
• Diaphragm gas valve.
• Ignition.
• Gas unit.

Perhaps you will also be interested in an article about gas heating boilers.Two pipes are connected to the gas column. The first of them is designed for gas supply, the second - for cold water supply.

When troubleshooting, the unit is set to the "Winter" mode and the setting is set to the maximum heating temperature.

• If the pump does not work, then either you just need to replace the cable, or you will have to change the pump itself.
• If the burner is not supplied with gas, then it is necessary to make sure that the gas valve is open, the gas line is not clogged, the voltage supply is in order. If the problem persists, after all these steps, you will most likely have to change the electronic board.

The shutdown of parapet boilers in severe frosts can be caused by the appearance of ice on the chimney.
The formation of an ice crust is explained by the content of water vapor in the exhaust combustion products. As a result of freezing of ice build-up and obstruction of the exit of flue gases, the device is automatically turned off and attempts to turn it on again will be unsuccessful.

To eliminate such a problem, you must first of all disconnect the column from the gas supply, then clean the water block and check the membrane.

• If the internal elements of the device are covered with soot or dirt, then this can also lead to failure.

Above 3 bar, the boiler discharges hazardous surpluses. Control board Only specialists can carry out repair work on the control boards. Because they have the experience and the necessary equipment.

Important! In most cases, the control panel fails due to power surges, so you need to take care of installing a voltage stabilizer.The work on repairing such boards themselves is in most cases the same for all brands of manufacturers, but there may be slight differences.

Therefore, you do not need to go into the "brains" of your boiler, as you can cause trouble. Read also the article “Calculation of gcal for heating - the first step towards a thaw in relations with mathematics and government agencies”.

In the Demrad floor-standing gas boiler, when turned on, a sharp flash of gas appeared, and earlier it turned on smoothly. A 6-year-old boiler is a lot or a little in terms of wear and tear?

If you have a common gas distribution point, a village one, then, most likely, a gas valve misalignment occurred in your boiler. The result of the work depends on the wear of the gas valve. It may need to be replaced.

I myself washed the heat exchanger of the Demrad boiler, and after that the temperature sensor was short-circuited. Will replacing the sensor help to start the boiler?

It is unlikely that the boiler cleaning is associated with the failure of the sensor. Perhaps it's not even the sensor. Measurements should be made according to the scale of correspondence between the boiler temperature and the resistance of this sensor. In the service literature for the maintenance of this brand of boiler, you can find such information.

The Demrad gas boiler heats up to 60 ° and starts to crack loudly. To stop this, you need to close and reopen the water. The boiler continues to operate silently. Errors are not written. What does this mean?

Extraneous noises when heating water may mean that the heat exchanger is clogged with sludge, its walls are covered with scale, and it needs to be cleaned internally.

In any case, you need to find out why the movement of the coolant is difficult. There may be air in the system. Perhaps the boiler has not been
prevention was done.

There is such a problem, the Demrad Nepto boiler works great when using the DHW circuit, but just turn on the heating circuit, the flame lights up for a moment and immediately the boiler goes into error f 04 which means there is no ionization? Tell me where to dig?

On the ionization electrode, first of all, then the gap between the burner and the cleanliness of the burner and adjust the gas valve with a U-shaped manometer. Also check the MIN setting of the gas valve pressure and the program parameter PP07. To do this, you need to enter the service menu.

There is a Demrad boiler of the TAYROS BK / 124 series (not turbocharged). For heating it works like a clock, for hot water supply it heats up to 40 degrees C and the burner goes out. After lighting, after a couple of seconds, the flame grows to full.

Heats up quickly to 40, the flame is reduced to a minimum and the burner goes out. I hooked up a 100 Ohm resistor in series with the modulator (76.4 Ohm coil), it began to warm up more slowly (the flame decreased), but still, when it reaches 40, the burner turns off.

What does that mean? In the “instructions” to the boiler it is written that if the DHW temperature sensor is faulty, the boiler continues to work, with the difference that it heats the water when DHW is requested by the sensor at the heating outlet.

The DHW sensor checked - it reacts to the temperature, the characteristic is close to Ariston UNO (20 degrees C - 12kOhm). It is simply not known what kind of sensor should be in it (boiler). Who will have what opinions?

Check the DHW temperature control resistor on the control board. Then check the NTC replacement.

The Demrad boiler in DHW mode heats up to 40 degrees, then it turns off, it takes about 30-50 seconds. it turns on again, but burns for less than 30 seconds, and then goes out again.

The impression is that the water is overheating and the gas is turned off (I tried at this moment the return pipe for heating, directly on the boiler - it is very hot). If you make a small pressure of water (you need to catch it), then the burner does not go out. Help, who knows, the malfunction seems to be typical.

Flush the DHW heat exchanger.

Demrat Nitron boiler, in heating mode, the timer display goes out and again lights up and clicks like a switch, while the heating does not work, and the hot water supply works normally. What could it be, a fee?

Need help. When firing up, a pop is heard in the boiler (gas explosion in the chamber).If you start it cold, then every 3rd ignition pops up strongly. The problem arose after the replacement of the gas pipe line, the entrance to the house (there was a weak pressure), the house is 5-storey. Can the gas supply pressure be reduced during ignition? Boiler Demrad 124 FE.

Your gas valve does not seem to be closing. Was the line purged after installation? There may be chips under the valve.

The problem is that when the temperature regulator in the heating system is set to full (80-85 C), the DEMRAD Kalisto HK D 130 FE boiler constantly heats the water in the heating system and does not turn off. When I close the two batteries, the boiler works normally (turns off and on). What could it be?

Heating area 80 sq.m. The boiler does not cycle when the system heats up at 80-85C. At 30,40,50,60,70 C, it heats the water in the system to the set temperature and turns off. Heats up to 80-85C and continues to burn without switching off!

Heat transfer in the system - min of boiler power. It works on the principle of keeping the set temperature, which it does, if overheating occurs above the set one - the boiler goes into delay mode - insulate the house to reduce heat loss.

It is possible to adjust the deviation of the flame (flame height) - there are 3 valves on the gas facility. one of them is closed with a transparent cap. tighten the brass nut a little - you will raise the flame. But high temperatures of 80-85 C lead to the formation of scale.

Heating systems for country and country houses. Boilers, gas water heaters, water heaters - Repair, service, operation. Recommendations for assembly and installation.

In the “instructions” to it is written that if the DHW temperature sensor is faulty, the boiler continues to work, with the difference that it heats the water when DHW is requested by the sensor at the heating outlet. The DHW sensor checked - it reacts to the temperature, the characteristic is close to Ariston UNO (20 degrees C - 12kOhm).

It is simply not known which sensor should be in it (). Who will have what opinions?

Heating area 80 sq.m. The boiler does not cycle when the system heats up at 80-85C.

At 30,40,50,60,70 C, it heats the water in the system to the set temperature and turns off.

Heats up to 80-85C and continues to burn without switching off!

OPERATION AND REPAIR

Instructions for the selection, installation, adjustment and operation of heating systems.

Such devices are simultaneously responsible for both space heating and hot water preparation. Install special filters to prevent such damage. The best option is a complete water purification system.

With it, your boiler will work as long as possible, and using purified water is much safer for health. Water purification systems Any knowledgeable person will tell you: only qualified specialists should be engaged in the installation and piping of gas heating equipment.

boiler demrad TG48-E burner burner error what to do Prompt demrad boiler no ignition what to do.

Good evening! The heating boiler Demrad KALISTRO is faulty, when switched on, the error "Malfunction in the heating system" immediately lights up, the pump does not work, the gas does not ignite! (pressure is normal) What could it be?

Good evening! Demrad heating is faulty, when switched on, the error "Malfunction in the heating system" immediately lights up, the pump does not work, the gas does not ignite!

(pressure is normal) What could it be? Can mold be removed from walls and ceilings with regular bleach?

Can mold be removed from walls and ceilings with regular bleach? Good evening! The Demrad heating boiler is faulty, when switched on, the error "Fault in the heating system" immediately lights up, the pump does not work, the gas does not ignite!

(pressure is normal) What could it be?

Prompt when heating constantly increases the pressure Popular questions I do not know how easier it is to make the floor in the dressing room, poured a mixture with expanded clay 10 cm, put a bar 50x70, there is a 40 non-floor board.

Attention! Not all voltage stabilizers turn back on their own after a sudden shutdown.

Damage to the electronic board can only be repaired by a qualified technician.

In other cases, most likely the user will receive a code on the display or other indicators, by which it will be possible to understand in which specific unit of the boiler the malfunction has occurred.

Please share your experience.

in the future I will add descriptions to this post.

- I did not have to deal with this error, but, judging by the name, it occurs when the heating system is depressurized and is solved by eliminating leaks and pumping water into the system to the desired level.

- A misfire occurs when fuel stops flowing to the burner.

Fuel supply must be resumed.

- the fuel supply to the burner is stopped or obstructed. Fuel supply must be resumed.

Instantaneous heaters that supply hot water immediately after switching on are designed for many years of operation.

Modern gas boilers are quite sophisticated technological equipment. With proper care and proper handling, the gas boiler will serve for a long time without any interruptions. However, even the most expensive and functional equipment has its own resource, after the exhaustion of which all sorts of malfunctions begin to appear.

Knowing the main causes of malfunctions and the procedure for eliminating them, you can repair your gas boiler with your own hands. This is a very painstaking, responsible, but in most cases relatively easy job.

First of all, it is necessary to establish why any malfunctions may occur in the operation of gas heating boilers. A number of different factors can lead to problems.

Modern gas boilers are equipped with various automation equipment. These funds, in turn, are powered by electricity.

And, despite the fact that the 21st century is already in the yard and systems for the use of alternative energy sources are being actively developed around the world, the problem of stability of power grids remains relevant for many regions, especially for remote villages and all kinds of summer cottages. To avoid all the accompanying troubles, buy a quality stabilizer in advance. Do not spare money to buy this device - there is little sense from cheap models, so it is better to immediately allocate funds to purchase a good stabilizer from a well-known manufacturer.

Be sure that in the event of a breakdown of the automation, you will spend much more money on its repair and replacement. At home, wall-mounted models of gas boilers are often used. Such devices are simultaneously responsible for both space heating and hot water preparation.

The design of wall-hung boilers includes a flow-through heat exchanger. Low-quality hard water with various impurities is the main enemy of the heat exchanger of a gas boiler. At the same time, under the influence of low-quality water, the heat exchanger can fail in just one season.

Install special filters to prevent such damage. The best option is a complete water purification system.

With it, your boiler will work as long as possible, and using purified water is much safer for health. Any knowledgeable person will tell you: only qualified specialists should be engaged in the installation and piping of gas heating equipment.

Even the slightest mistakes at the stages of installation and connection of equipment can lead to irreversible consequences. For example, an incorrectly executed piping in the case of a cast-iron gas boiler more powerful than 50 kW will lead to the fact that the unit will simply split at low temperatures. Unfavorable weather conditions can also lead to the appearance of many different problems.

In frosty winters, people turn on the heating at almost full capacity. This leads to a significant decrease in pressure in the gas pipeline system.As a result, boilers cannot fully realize their potential.

You will not be able to solve this problem on your own - you still cannot explain to your neighbors that by their actions they only aggravate the situation. As a solution to the problem, you can install an additional boiler that runs on a different fuel.

A modern gas boiler is a complex and potentially dangerous system.

The main danger of such units is the risk of a gas explosion in the event of improper handling of the equipment or untimely elimination of various malfunctions. Various kinds of automation are responsible for maintaining the operation of the gas boiler at an optimal level. An inexperienced user is often unable to understand its device.

Therefore, it is better to immediately invite specialists to troubleshoot serious problems. On your own, you can try to eliminate only visible damage and various contaminants that have led to the failure of the pipe, chimney and other parts of the boiler. There are a number of typical problems that you can fix yourself in most cases.

Problems will also be listed, in the event of which you can only protect yourself before the arrival of a specialist. Return to the area after a while to check for the smell of gas. If everything is in order with the draft, try to turn on the boiler again.

If there is no thrust, immediately call a repairman. Overheating is one of the most common problems in modern gas boilers. The reason for this may be a malfunction of the automation equipment or a clogged heat exchanger.

You can also clean the heat exchanger with your own hands. The most common materials for the manufacture of heat exchangers are copper and stainless steel.

There is usually no problem cleaning them, but be extremely careful anyway.

According to the recommendations of the manufacturers, the heat exchangers must be cleaned of soot every few years (each manufacturer indicates a specific interval in the instructions for their equipment). To clean the heat exchanger, simply remove it and clean it thoroughly with a metal brush. In the case of a copper heat exchanger, it is best to replace the brush with a metal sponge used for washing dishes.

The problematic place of fans is their bearings. If the fan of your boiler stops developing the set number of revolutions, try to eliminate the problem as soon as possible. To do this, remove the back of the fan, take out the stator and lubricate the bearings.

Machine oil is fine for lubrication, but it is best to use a higher quality carbon compound with heat-resistant properties if possible. Also, an interturn short circuit can lead to problems with the fan. Only a specialist can cope with the elimination of this malfunction.

Return the stator for repair to replace the winding, or immediately replace the faulty unit with a new device. Remove the chimney and thoroughly clean all of its components from soot.

So you will not only return the previous level of efficiency of the unit, but also significantly increase the efficiency of the boiler. The boiler can shut down spontaneously for several reasons. This usually happens due to a malfunction of the combustion sensor.

This problem, in turn, most often leads to contamination of the gas pipe.

Remove the branch pipe, rinse it thoroughly with water, clean it with a cotton swab and blow it off the remaining moisture.

Put the pipe back in place and try to turn on the boiler.

If it doesn't help, call the wizard.

No wonder they say: the best repair is prevention. Gas boilers require annual preventive maintenance, which must be carried out before the start of the heating season. Check all the previously discussed boiler elements for their serviceability.

Follow the preventive maintenance recommendations given by the manufacturer in the instructions specific to your boiler. Eliminate any malfunctions that arise in time, if possible. Remember! A gas boiler is a potentially hazardous equipment.

Incorrect use and untimely troubleshooting can lead to irreparable consequences.

Therefore, be careful and do not engage in any repair work if you doubt your ability and correctness of action. Otherwise, follow the instructions provided. Hello, I have a mounted Ariston Egis 24 FF, the boiler has been working normally for the last 2 years only with an open air intake, before (5 years) the air intake covers were closed. occurs (the red indicator is on), if one of the air intake covers is opened, the boiler is operating normally. The pipe through which the exhaust gases are removed to the atmosphere is completely passable and there are no obstacles to air intake.

Modern gas boilers are quite sophisticated technological equipment. With proper care and proper handling, the gas boiler will serve for a long time without any interruptions. However, even the most expensive and functional equipment has its own resource, after the exhaustion of which all sorts of malfunctions begin to appear.

DIY gas boiler repair

Knowing the main causes of malfunctions and the procedure for eliminating them, you can repair your gas boiler with your own hands. This is a very painstaking, responsible, but in most cases relatively easy job.

Contents of step-by-step instructions:

First of all, it is necessary to establish why any malfunctions may occur in the operation of gas heating boilers. A number of different factors can lead to problems.

Modern gas boilers are equipped with various automation equipment. These funds, in turn, are powered by electricity. And, despite the fact that the 21st century is already in the yard and systems for the use of alternative energy sources are being actively developed around the world, the problem of stability of power grids remains relevant for many regions, especially for remote villages and all kinds of summer cottages.

A sudden power outage or a strong surge in electricity is one of the main enemies of any modern gas boiler.

To avoid all the accompanying troubles, buy a quality stabilizer in advance. Do not spare money to buy this device - there is little sense from cheap models, so it is better to immediately allocate funds to purchase a good stabilizer from a well-known manufacturer. Be sure that in the event of a breakdown of the automation, you will spend much more money on its repair and replacement.

At home, wall-mounted models of gas boilers are often used. Such devices are simultaneously responsible for both space heating and hot water preparation.

The design of wall-hung boilers includes a flow-through heat exchanger. Low-quality hard water with various impurities is the main enemy of the heat exchanger of a gas boiler. At the same time, under the influence of low-quality water, the heat exchanger can fail in just one season.

Install special filters to prevent such damage. The best option is a complete water purification system. With it, your boiler will work as long as possible, and using purified water is much safer for health.

Any knowledgeable person will tell you: only qualified specialists should be engaged in the installation and piping of gas heating equipment.

Even the slightest mistakes at the stages of installation and connection of equipment can lead to irreversible consequences.For example, an incorrectly executed piping in the case of a cast-iron gas boiler more powerful than 50 kW will lead to the fact that the unit will simply split at low temperatures.

If you are not an experienced gas operator, entrust the boiler installation to professionals.

Therefore, if you are not an experienced gas operator, entrust the installation of the boiler to professionals - this way you will save yourself from many problems in the future.

Unfavorable weather conditions can also lead to the appearance of many different problems. In frosty winters, people turn on the heating at almost full capacity. This leads to a significant decrease in pressure in the gas pipeline system. As a result, boilers cannot fully realize their potential.

You will not be able to solve this problem on your own - you still cannot explain to your neighbors that by their actions they only aggravate the situation. As a solution to the problem, you can install an additional boiler that runs on a different fuel.

Automatic solid fuel coal-fired boiler with hopper

A modern gas boiler is a complex and potentially dangerous system. The main danger of such units is the risk of a gas explosion in the event of improper handling of the equipment or untimely elimination of various malfunctions.

Various kinds of automation are responsible for maintaining the operation of the gas boiler at an optimal level. An inexperienced user is often unable to understand its device. Therefore, it is better to immediately invite specialists to troubleshoot serious problems.

On your own, you can try to eliminate only visible damage and various contaminants that have led to the failure of the pipe, chimney and other parts of the boiler.

Typical malfunctions of gas boilers

There are a number of typical problems that you can fix yourself in most cases. Problems will also be listed, in the event of which you can only protect yourself before the arrival of a specialist.

If a distinct smell of gas or smoke appears in the room, immediately turn off the boiler and leave the room, opening it for ventilation.

Gas boiler functionality diagram

Call a professional immediately. Trying to solve the gas leak problem on your own without the necessary skills is extremely dangerous and unreasonable.

If the flame sensor or the gas supply pipe breaks down, turn off the boiler, close all gas valves and let the unit cool down completely.

Return to the area after a while to check for the smell of gas. If everything is in order with the draft, try to turn on the boiler again. If there is no thrust, immediately call a repairman.

Overheating is one of the most common problems in modern gas boilers. The reason for this may be a malfunction of the automation equipment or a clogged heat exchanger.

It is impossible to cope with the repair of automation without the appropriate knowledge.

You can also clean the heat exchanger with your own hands. The most common materials for the manufacture of heat exchangers are copper and stainless steel. There is usually no problem cleaning them, but be extremely careful anyway.

Primary heat exchanger for wall mounted gas boiler Beretta

According to the recommendations of the manufacturers, the heat exchangers must be cleaned of soot every few years (each manufacturer indicates a specific interval in the instructions for their equipment).

Primary heat exchanger (heating circuit) of the gas boiler Rinnai SMF

To clean the heat exchanger, simply remove it and clean it thoroughly with a metal brush. In the case of a copper heat exchanger, it is best to replace the brush with a metal sponge used for washing dishes.

The problematic place of fans is their bearings. If the fan of your boiler stops developing the set number of revolutions, try to eliminate the problem as soon as possible.

Fan (3311806000) for Daewoo gas boiler

To do this, remove the back of the fan, take out the stator and lubricate the bearings. Machine oil is fine for lubrication, but it is best to use a higher quality carbon compound with heat-resistant properties if possible.

Fan RLA97 (Aa10020004) for gas boiler Electrolux

Also, an interturn short circuit can lead to problems with the fan. Only a specialist can cope with the elimination of this malfunction. Return the stator for repair to replace the winding, or immediately replace the faulty unit with a new device.

Gas boiler chimney diagram

Often, excessive clogging of the coaxial chimney leads to the appearance of various malfunctions in the operation of a gas heating boiler.

Remove the chimney and thoroughly clean all of its components from soot. So you will not only return the previous level of efficiency of the unit, but also significantly increase the efficiency of the boiler.

The boiler can shut down spontaneously for several reasons. This usually happens due to a malfunction of the combustion sensor. This problem, in turn, most often leads to contamination of the gas pipe.

Draft sensor 87 ° C for Thermona boiler

Remove the branch pipe, rinse it thoroughly with water, clean it with a cotton swab and blow it off the remaining moisture. Put the pipe back in place and try to turn on the boiler. If it doesn't help, call the wizard.

No wonder they say: the best repair is prevention. Gas boilers require annual preventive maintenance, which must be carried out before the start of the heating season.

Whenever possible, maintenance should be carried out twice a year, before and after the heating season.

Check all the previously discussed boiler elements for their serviceability. Follow the preventive maintenance recommendations given by the manufacturer in the instructions specific to your boiler. Eliminate any malfunctions that arise in time, if possible.

Remember! A gas boiler is a potentially hazardous equipment. Incorrect use and untimely troubleshooting can lead to irreparable consequences. Therefore, be careful and do not engage in any repair work if you doubt your ability and correctness of action. Otherwise, follow the instructions provided.

Column Demrad C 125 B / 275 may not turn on for the following reasons:

The batteries are empty. In this case, the sound of ignition of the igniter can be heard, but the power of the batteries is not enough for it to ignite. These models are equipped with a battery indicator. If the light is blinking, a new battery must be installed. The compartment for them is located at the bottom of the device. For correct operation, it is advisable to buy expensive alkaloid batteries, then they can last for several years.

Poor cravings. Over time, the chimney tends to clog. The draft is checked by a special sensor that overheats and turns off the water heater in case of an emergency. The draft is checked with a lighted candle or a match, while the flame should deflect towards the chimney. You can clean the chimney from dirt yourself. For prophylaxis, it is recommended to do this every few months. It is also important to ensure a good flow of air, and it is recommended to keep the window open during operation of the gas water heater. If the actions taken on their own could not solve the problems, then most likely the chimney was clogged in higher, inaccessible parts, perhaps in the wall or on the roof. To solve the problem, you will need to contact a specialized service center.

Poor inlet water pressure. Demrad geysers are sensitive to water pressure, and at its low value they will not turn on, as protection will work. The reasons for the decrease in the flow rate in are possible in the following cases. The filter is clogged and can be cleaned or replaced. This procedure is required to be done regularly.There may also be a poor pressure in the falling water supply; in this case, you can reduce the settings with the water flow regulator located on the front of the device. The settings are made with the water supply turned on until the water heater starts up. But not all models have such a regulator.

Low gas pressure, or no gas at all. It is necessary to check whether gas is supplied to the apartment by turning on, for example, a stove at the same time. If there is no flame or it is too low, contact your gas supplier.

Clogged radiator. The combustion process produces soot, which clogs the heat exchanger radiator. To eliminate this problem, the casing is removed, then the heat exchanger, then it is necessary to carefully clean it from contamination. At the same time, make sure that the thin copper pipes are not damaged or leak. If the column is equipped with an electric piezo ignition, the igniter could become clogged there. It is cleaned with a special wire, while disassembling the unit.

Also, the device may go out if hot water is diluted with cold water and a mixer. If cold water is supplied with too much pressure, it reduces the pressure of the hot water.

Electronics defective. It is necessary to check the traction sensor, water overheating sensor, and other elements that operate on electricity.

Breakdown prevention

In order for the Demrad C 125 B / 275 gas water heater to serve as long as possible and break down as rarely as possible, it is important to observe a number of preventive measures, as well as comply with safety requirements.

Here are the basic rules that affect the correct operation of the device:

1) When installing the appliance, it is necessary to provide it with good ventilation, as well as a properly installed chimney.

2) A permanently open window in the room where the water heater is located is strictly required.

3) It is forbidden to mix cold and hot water.

4) It is important to periodically inspect the filter and radiator for cleanliness. And also check the draft in the chimney.

5) Do not load the unit in maximum mode. Despite the fact that these models can heat water up to 68 degrees, it is recommended to work in the 30-45C mode. Operation at high temperatures will significantly reduce the life of the instrument and increase the rate at which soot contamination occurs.

6) It is recommended to install additional filters at the water inlet to the device to protect it from dirt.

What to do if the wick does not light up

The possible factors by which the wick in the Demrad column may not light up can be completely different.

The igniter is clogged with crushed debris and dust - For cleaning, you first need to remove the casing, only after that you can start cleaning. This will require fine-grained sandpaper, after processing it is necessary to blow out the wick, to remove debris from it, be sure to turn off the gas supply to the device before that in case of repair work.

Thermocouple breakdown - The main purpose of a thermocouple is to shut off the gas supply to the unit if its operation is not stable. If the thermocouple fails, the wick will not light up. The thermocouple is presented in the form of an alloy of 2 different metals, which are not repairable; replacement is required. For repair work, you must contact the service center for help.

No draft in the chimney - You will need a piece of paper to carry out the check. Bring it to the ventilation opening, it should be attracted. You can also check with a match or candle, the fire should be deflected in the direction of the hood. If this does not happen, then it is recommended to seek help from a specialist.

The filter at the inlet to the Demrad C 125 B / 275 gas column is clogged - this can also cause a breakdown, because the incoming flow is not enough to start the device. It is recommended to check the filter; for this, unscrew the nuts with a wrench and remove it, if possible, clean it or replace it with a new one.

Broken water diaphragm - Over time, the diaphragm may wear or become clogged.It is necessary to remove the casing of the unit, dismantle the water unit, unscrew it and take out the water membrane. In good condition, it must be intact; if the membrane is damaged, it must be replaced. If there is a blockage, then it is enough to clean and put the membrane in place. Replacement can be carried out without the help of specialists.

Failure of the solenoid valve - the EMC is presented in the form of a bobbin on which a copper wire is wound, and a metal rod is located in the center. The main purpose of the solenoid valve (EMC) is to regulate the gas stop to the burner. In order to check the performance, you need to use a finger-type battery - when the wick is started, it will light up, and when the battery is disconnected, the flame will go out. If at the time of the check everything was as described above, then this indicates that there is another reason. If not, then you will need to completely change the EHR. The wick is also influenced by the air flow. Draft could be the reason for not burning.

Lack of fresh air supply - To solve this problem, you need to open the window for a while, and then try again to start the Demrad column.

Failure of the traction control sensor - In order to check its performance, you need to ring it. To do this, connect the two terminals. If the traction control sensor is in good working order, then the value of infinity will appear on the device, if this does not happen, then replacement is required.

Low battery or full discharge - You need to replace them with new ones.

There was a break in the contacts in the electrical circuit - Check, and, if necessary, connect and isolate.

The water or gas supply valve is closed. If at the moment of starting there is no spark, but clicks are heard, the cause could be a breakdown of the microswitch. To check it, you need to close it, if you open the hot water supply valve, the switch key will be released with the handle, if this does not happen, then slide it and lubricate. If there is no result, then the switch must be replaced.

Stem oxidation has occurred or is practically immobilized - Disconnect from switch, check for oxidation, clean and lubricate if necessary.