How to check if a thermostat is working
Time to turn the heat back on. You approach your good old thermostat, or the new model you just installed, press the power button and... surprise, nothing happens at all. The expected metallic click of the relay does not arrive , the frost rages outside, you feel the anger building towards that thing that seems to be looking at you mockingly from the wall. Wait, it might not be his fault.
Let's find out together how to check it .
How to check if a thermostat is working
The thermostat , but also the chronothermostat , can in fact be seen as an advanced switch. We must therefore create the conditions for this switch to "trip" closing the circuit .
So here's how to proceed with check if the thermostat is working properly .
Suppose we have 20 degrees at home. We turn on the thermostat, go into manual mode and set the comfort temperature to more than 20 degrees, for example to 24. If we hear the classic metallic click , and the boiler turns on , it means that the thermostat works , otherwise there are two options:
- The thermostat is set to cooling mode . It means he's doing the opposite. Let's try to set the comfort temperature below 20 degrees. Does the relay trip? Then the hypothesis is correct. The solution is to set the thermostat to heating mode.
- We heard the click, but the boiler did not turn on . It could be a problem with the boiler or with the thermostat connection. Let's take a closer look at these two cases.
The thermostat is connected badly
This hypothesis is obviously in scenario of a new installation , because an old thermostat, which has always worked, clearly cannot be badly connected.
So, we have just installed the thermostat, we test its operation, we hear the click, but the boiler doesn't start. There is a good chance that we have connected some wires incorrectly, the solution is to take a good look at the connection diagrams , usually supplied with the thermostat, and check that you have connected everything correctly .
The thermostat is connected correctly
If we are sure that the thermostat is connected correctly and we heard the click, then it could be a problem with the boiler . Is there a way to check? Yes, you can do it too, but it's more it is prudent to rely on a technician .
Do you remember? At the beginning we said that the thermostat is a switch, so you just need to manually connect the boiler consent cables to check whether the latter part.
If it turns on then the thermostat needs to be replaced, vice versa the problem is in the boiler.