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Have you successfully used your water heater, but it started to hum? Why is the boiler noisy and what to do to fix the problem? First you need to understand the reasons. When exactly do you hear extraneous sounds: when taking water or heating? This is important, because such signs indicate a specific breakdown.
Why is the water heater buzzing
Extraneous sounds during the operation of the boiler do not always indicate a breakdown. During water heating, convection. When the heating element is turned on and heating begins, air bubbles appear in the water. Rising up, they meet with cold (unheated) water and burst with noise. The kettle works in the same way. Unfortunately, it is impossible to fight such a process.
Other reasons why the boiler makes sounds indicate a breakdown.
Scale formation
Water could get under the scale layer on the heater. With this, you can hear a whistle when the water comes out. The heating element works, but does not heat or heats the water for a long time, because the plaque prevents normal heat transfer. Scale falls off over time and settles at the bottom of the tank, creating noise during operation.
For what reasons does a raid appear:
- Hard water in the pipeline.
- Lack of filters.
- Untimely cleaning of equipment.
Heavy salts from the water settle on the walls of the tank and heater. You will have to get the heating element and clean it, otherwise it will burn out over time. We described the procedure in detail in the article “How to clean a water heater“. Recall the main tasks:
- Disconnect the appliance from the mains and drain the water.
- Unscrew the fixing nuts of the flange and remove the heating element.
- Clean it mechanically, let it sour in water with the addition of citric acid.
The walls of the tank are cleaned with special means.
Специалисты рекомендуют устанавливать водные фильтры, вовремя заменять магниевый анод and clean the heater.
High blood pressure
If the boiler “Termex”, “Ariston” or another brand beeps when hot water is turned on, there is probably increased pressure in the system. In this case, the pipes may hum. The pressure force should not exceed the norm, which is indicated in the instructions for the model. This may cause the tank to explode.
Read in a separate article what to do if the boiler exploded.
If the pressure is too high, install a reduction gear.
Damaged dry heater
The heating element is called dry, since the spiral is enclosed in a protective sheath that does not allow contact with water. If a break or crack occurs in the shell, then the liquid, falling on the spiral, hisses and squeaks. In that case it will help heating element replacement.
check valve wear
A non-return valve is required when installing the boiler. It serves as a barrier to keep water from the tank from leaking down the drain. During operation, the part wears out or is damaged, passes the flow with a buzz or whistle. Therefore, a new element must be installed.
Bypass valve failure
The element serves to normalize the pressure in the tank. As soon as it exceeds the norm, the bypass element drains the water and whistles. In this case, an extraneous sound may be heard. This means that the valve needs to be replaced or a reduction gear installed.
Lots of air in the water
Air often enters the system during repairs and restoration of supply. There is nothing you can do but wait until normal supply is restored.
Normally, local services should periodically degas the water. To ensure that the volume consumed is not exceeded due to air in the system.
It turns out that extraneous sounds are not always a cause for concern. Follow the rules of operation, and everything will be in order.