What is wrong with my heater?

Good day everyone!

A few days ago we moved into a new apartment and have recurring problems with a radiator, for which I unfortunately have not yet found a solution. I would be happy if someone here knows advice and can help me.

To not describe the problem at length, here is a short video:

[MEDIA=vimeo]386012344[/MEDIA]

What is happening: The radiator makes a loud, creaking noise, always after it has been running for some time and very irregularly, usually at about level 3, sometimes also at level 2.5. The noise subsides when you simply press lightly on the thermostat valve or adjust it very slightly (see video).

As far as I can judge, the heating is well vented. I have also tried swapping the thermostat with the one on the radiator next to it as a test; the same problem still occurs here, while the other radiator keeps running without problems. So it somehow can’t be the thermostat.

Is there anything I can do about it? Has anyone had similar problems before? Or do I inevitably have to call the heating engineer?

Many thanks and best regards

Carlo

If it's an apartment in terms of rent, I would definitely contact the landlord. I've never heard of something like that, sounds like in the ghost train.

It seems to be the valve of the radiator (so not the thermostat head). If you remove the thermostat, you will see a metal pin. You can press it in (with pliers or something). Move it a few times. If that is not enough, only the plumber can replace the valve. Since it looks like it is a rental apartment, your landlord has to arrange it.

Hi

The supply and return lines were swapped.

Olli

It seems to be the radiator valve (so not the thermostat head). If you remove the thermostat, you will see a metal pin. You can press that in (with pliers or something). Move it a few times. If that’s not enough, only a plumber can replace the valve. Since it looks like it’s a rental apartment, your landlord has to arrange that.

WARNING!
Don’t do this if you have no idea about the subject!
If you accidentally pull out the metal pin, heating water will spray out. If you haven’t taken the heating off the circuit beforehand, that can be quite a few liters and your heating system will run almost empty and you’ll have smelly, nasty water in your place.

Better get a professional or have your landlord get one.

Sorry, but I don’t understand how someone can give such advice to a supposed layman here!

Regards
Specki

Sorry, but I don't understand how anyone can give such advice to an alleged layperson here!

Pushing the metal pin in and out is daily practice in tens of thousands of apartments. It gets stuck so often, especially in older systems. I didn't even know that it could be pulled out at all? Then a berserker must pull on it...