Why the electric kettle does not turn off when boiling

An electric kettle is one of the integral parts of a modern home or office. This small household appliances firmly entered our lives thanks to its convenience. One of its main advantages is independent disconnection. It is for this function that many have opted for the electric kettle instead of the traditional heating of the water on the stove. Therefore, when the kettle does not turn off when boiling and creates an artificial sauna in the room, filling it with steam, this causes considerable discomfort. Eliminate this problem will help our recommendations.

Design and principle of operation

To understand why the kettle stopped turning off, you need to study its design and find out how it works. The electric kettle is arranged quite simply: with active boiling of water, steam is collected in the upper part of the body, which, with a large accumulation, is discharged into a special channel, where limit switch. From the high temperature, it works and disconnects the device from the network.

For clarity, the standard design of the electric kettle is shown in the figure:

Having connected the product to the network, we draw water into it and press the power button - the current through the connecting cord goes to the terminals of the tubular heating element (TEH), which are in the massive sole of the device. The water is heated to boiling, and then steam enters the side channel to the switch, heats it bimetallic plate, which starts to bend from the temperature, and the contacts are disconnected.

On the case of an electric device for boiling water there are special tags that limit the water level in the inner tank:

• MIN indicates the minimum level at which it is possible to turn on the device without the fear that the heater may burn out;
• MAX - you should not pour water above this level, because when it boils, its surplus can splash out.

Before each electric kettle is turned on, it is necessary to check the tightness of the lid closure: if there are gaps, steam will go out through them, and not into a special channel, in order to turn off the device. Water can boil, t. To.there were no commands to turn off the device, and the heating element will have to be changed - it will simply burn out without water.

Possible reasons

If the electric kettle does not turn off, although boiling water is already well underway, then there may be several reasons for this failure of a previously reliable device.

1. The lid was loosely closed.
2. A large gap was formed between the common body of the device and the lid due to improper installation of the water filter element.
3. Filter is incorrectly inserted or missing.
4. The formation of scale on the inner walls of the product.
5. Broken switch or bimetallic plate lost elasticity from long operation.

Besides these reasons, maybe sticking of contacts, or sticking to each other due to the accumulation of foreign particles, so the product can not be disconnected from the electrical network.

How to eliminate yourself

First of all, you need to carefully inspect the device: perhaps the reason is that the filter installed incorrectly after washing does not allow the lid to close tightly - this is the most common cause of a similar malfunction.

When the lid is in order, it is necessary to check the inside of the appliance: check whether the channel for the steam outlet to the switch is blocked - its hole is on the side of the kettle handle. In the newest models of products a similar problem has been eliminated by the developers.

If during the inspection you find out that the reason lies in the switch, in order to reach it, it is necessary to completely dismantle the product. To do this, unscrew all the fastening screws under the cover. During the work, remember the sequence of all actions - it is necessary to collect strictly the opposite.

Important! The switch cannot be repaired - experts advise to simply replace it, which gives a full guarantee of the quality of this device.

There are times when burn contacts - they should be cleaned with the finest sandpaper from sticking and burning. After that, rub the contacts for several minutes with thick felt to eliminate the smallest scratches - this will prevent sticking and sticking for a long period.

After the repair and successful assembly of the electric kettle, do not rush it into the network.Dial the maximum amount of water and place the product on the table with a paper towel. After half an hour you need to check on water leakage due to improper assembly. If everything is in order, then boldly turn on the device in the network and wait for the repair result - whether the kettle turns off when boiling water, which you will immediately be notified of by a characteristic click.