The thermostat is the device that activates the boiler and sets the desired temperature at home. However, it may happen that this operation does not succeed, and there can be several reasons. Let's explore them together to understand what to do in case of a malfunction.

How does the thermostat turn the boiler on?

The action of a thermostat is relatively simple: it allows you to set the temperature within the rooms of the house using controls (usually small buttons or via a touch screen). Since it is connected to the heat generator, if it detects that the temperature is lower than the set one, it proceeds to turn on the boiler to provide the necessary heat to reach the desired temperature.

Here are the different steps that regulate the action.

1. The thermostat detects the temperature of the room in which it is installed.
2. It compares the detected temperature with the one set as desired.
3. If the detected temperature is lower, it sends a signal to the boiler to turn it on.
4. The boiler starts to deliver heat.
5. The heat is then distributed in the room through radiators or other heating systems such as underfloor heating.
6. Once the temperature reaches the required setting, it interrupts the signal to the boiler, which then turns off.

Modern thermostats, which are smart and connected to the wireless network, allow the boiler to be started both manually and remotely.

• When users are away from home, they can continuously monitor the situation through the dedicated app on their mobile phone.
• If they want to be welcomed by a warm and hospitable home upon returning, they can easily communicate to the device what temperature they prefer, activating the heating system.
• The smart thermostat is also designed with advanced algorithms that enable it to learn the hourly, daily, and weekly habits of the inhabitants and thus act autonomously.

Why is the thermostat not turning the boiler on?

Unexpected issues can always arise: the temperature in the house is not the one set on the thermostat, but despite this, the boiler does not start. There are several reasons for a malfunction: in some cases, the user's intervention is enough, in others, it is necessary to contact a specialized technician.

• If the device is battery-powered rather than electric, it might be that the batteries have run out. Thermostats show if the battery level is low, so it is good to keep an eye on the signal and act in advance.
• For thermostats connected to the electrical line, once installed, a control operation must be performed immediately to ensure that the connection has been made adequately by setting a desired temperature higher than the detected one. If the connection is correct, the heat generator is activated.
• This device must also undergo regular maintenance, especially to clean it from dust or encrustations that could affect its operation.
• It should not be assumed that the set temperature is not actually the required one but is lower. Detecting a temperature lower than desired, the thermostat does not activate the boiler.
• In this regard, when installing a thermostat, it is important to consider where it is installed. If it is placed in an area where the temperature is more likely to fluctuate, such as a hallway, the device records a lower level, and the heating is not delivered.

If the problem cannot be attributed to these factors, it is advisable to contact a specialized technician to get a precise assessment and intervene as soon as possible.

How to restart a thermostat?

If communication between the thermostat and the boiler is not happening as it should, you might consider the option of performing a reset according to the instructions contained in the device's guide, if the model allows.

If it is necessary to change the batteries, before proceeding with the removal of the old ones, simply follow the instructions provided by the manufacturer: with the steps completed properly, the thermostat will no longer indicate the need to change the batteries.

An added value of intelligent and WiFi thermostats is the option to receive a notification of low batteries directly on your mobile phone. This way, the warning is immediately noticed by the user who, otherwise, might not pay due attention to the signal on the display and find themselves returning to a cold and unwelcoming home.

What happens if the thermostat does not work?

A malfunctioning thermostat essentially means a cold environment. Secondly, for those who have installed a device that includes this functionality, it would then be impossible to respect the scheduling for the automatic turning on and off of the boiler.

The latest generation and smart versions also do not limit themselves to monitoring the temperature level of the rooms but also include control of the air quality of the home. This is one more reason to quickly resolve the issue, especially if a simple user intervention is not enough, but a visit by a qualified professional is necessary.