DIY boiler repair part 1

Gas boilers today are in enviable demand, they are distinguished by a high level of functionality. But at the same time, over time, their performance is greatly reduced, and such problems lead many users to a dead end. To avoid unexpected repairs, timely maintenance of these devices is essential. If you are already having difficulties, then you can repair gas boilers with your own hands. In this article, we will provide ways to eliminate typical malfunctions of such devices.

In fact, any part of the boiler can break down, because there are many reasons for this. Most often this happens due to poor-quality assembly of units, improper operation and foreign objects getting inside the expansion tank. Be that as it may, before you repair a gas boiler, understand its device. It is recommended to pay special attention to the safety group, which is responsible for the correct operation of the instruments.

These elements include:

• Traction sensor with a plate that is rated at 75 degrees. This device monitors the operation of the boiler chimney, it reacts to any malfunctions during the removal of combustion products into the chimney and their exit from the smoke trap.

Important! In the event of a malfunction, the device heats up, starts to work, so many equip it with an additional gas alarm.

• Protective monostat. It protects the boilers from incomplete fume extraction due to a clogged chimney or heat exchanger.
• Limit thermostat. Responsible for controlling the water in the boiler - as soon as it boils the overheating sensor, it immediately turns off the device.
• Ionization electrode. This element controls the presence of a flame. Repair of many boiler models begins precisely with checking the electrodes, because if the device starts working without a flame, it can explode.
• Disruptive pressure control valve. The system causes the device to dump dangerous excess when the pressure exceeds 3 bar.

Video (click to play).

Important! If any of the listed sensors fail, then the residents of the house can breathe in carbon monoxide, missed by the system. An explosion may occur as a result of malfunctioning of the electrode.

Modern boilers are rather complex household appliances. As we have already specified, even a minor malfunction can lead to an explosive situation. Therefore, if you are not confident in your abilities, it is better not to undertake repairs yourself.

When repairing a gas boiler, the following factors must be taken into account:

• If the room is filled with smoke or there is a clear smell of gas, then immediately turn off the device, open all windows and doors.
• It is quite possible to repair the device on your own, if, for example, it is necessary to replace a broken combustion sensor. It is enough to disconnect it from the gas supply, then let it cool down completely, check for the presence of traction, and restart.

Important! If you plan to check for traction, the first step is to make sure that the room does not smell of gas. Then bring a sheet of paper to the chimney, if it does not move, then there is no draft. Do not turn on the boiler under any circumstances, call the master immediately.

• Basically, such devices fail due to clogging of the heat exchanger. It is easy to solve this problem: in order to repair the heat exchanger of a gas boiler with your own hands, you just need to clean it.

Important! If the automation has broken down, then you cannot do without a professional.

• When the fuel supply pipe becomes clogged, it is enough to disconnect it from the system, thoroughly clean and rinse it, then dry it and return it to its place.
• If a flame that is constantly burning in standby mode suddenly goes out, then you should use the instructions and use it to check the serviceability of the unit.

Of course, it's not worth repairing the gas boiler control board with your own hands, because, as we found out, it consists of a large number of elements responsible for the safe operation of the device. If the problems turned out to be typical, then feel free to get down to business.

Perform troubleshooting according to the instructions:

1. Heat exchanger. This is the weakest and most problematic part of the boilers, which is made of copper or stainless steel. It should be cleaned once a year from accumulated soot with an ordinary metal brush. A metal dishwashing sponge is ideal for this, as it is more gentle and gentle.
2. Blower fan. Even though the fans run at the lowest RPM and DC, they rarely break down. The most problematic places are the bearings. If you find that the fan has stopped developing the required number of revolutions, then first of all disassemble the boiler, remove its rear part, then pull out the stator and lubricate the bearings with machine oil.
3. Chimney. Often it is the coaxial chimney that clogs up, and the device stops working normally. To fix the problem, you need to remove it from the system, thoroughly clean every part of soot, then return everything to its place.
4. Valve. Do-it-yourself gas valve repair of a gas boiler is even easier - you just need to purchase a new part and replace the failed element with it.

Important! A gas boiler is a potentially dangerous equipment that, if used incorrectly and untimely elimination of problems, can behave unpredictably.