Repair of underfloor heating under tiles

Autonomous floor heating system is an excellent solution for comfort and coziness in the living room. Underfloor heating is one of the most effective and convenient methods of heating; it is the most practical and durable of all heating systems. But even such a reliable heating sometimes fails and fails.

Causes of damage

At the most inopportune moment, the heating stopped working, it is necessary to find the reasons for the malfunction of the underfloor heating. A positive feature of a warm floor is the possibility of not only self-insulating the floor, installing a tiled coating, but also eliminating the cause of technical malfunctions. It could be:

  • damage to the temperature controller;
  • damage to the temperature sensor;
  • heating cable breakage.

To resolve these problems, you first need to find the cause of the failure, and then the location of the damage.

How to find a damaged area

When you turn on the electric underfloor heating does not show signs of life, it is necessary to check the operability of the electric heating elements. To do this, the resistance is measured with a multimeter - a measuring device that includes several functions: voltmeter, ohmmeter, ammeter.

If the difference between the actual and nominal resistance is more than 5%, it is necessary to carry out diagnostics, find the place of damage, and carry out the repair

ATTENTION. Remember that work is carried out under voltage, be sure to follow safety precautions.

We carry out diagnostics

If you turn on the thermostat and there is no heat in the floor, you must do the following:

  1. Release the temperature controller from the junction box - remove the top panel, unscrew the fixing screws.
  2. Check with the device whether there is voltage at the terminals, if 220V is present, everything is in order with the thermostat, if there is no change the device.

Check the underfloor heating sensor

Before carrying out further work, de-energize the thermostat, stop the supply of voltage to the sensor. Measure the resistance with the device, depending on the manufacturer's company, it can be from 6.8 kOhm +/- 20% - 40 kOhm +/- 20%.If the device displays 0 or 1, the sensor is defective, replacement is required.

IMPORTANT. When buying a floor heating sensor, the company should be the same as the thermostat. Different manufacturers may not work.

If the reason was in the sensor, when it is replaced, heat will appear on the floor, otherwise, we are looking for the reason further.

Identification of damage on the floor

The next step is to directly search for a gap on the floor, for this they use special devices to search for hidden wires in the wall, in our case, in the floor. The device will immediately respond to an open circuit, there is damage in this place, the error is +/- 1-2 cm.

Tile floor repair

The place of damage is determined. Tile is carefully removed, damaged cables are peeled. The main thing is to connect the wires correctly: the current-carrying is connected to the current-carrying, resistive and resistive, shielding separately.

At the junction, a heat-shrink tube is put on, heated by a hairdryer for greater tightness, clamped with clamps. Check the efficiency of the heated floor, if the heat has gone, everything is in order. The tile is installed in its original place, only it is not advisable to connect the floor immediately, let the glue dry.

Watch the video: How to repair a damaged electric floor heating system (March 2024).

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