Underfloor heating stopped working?

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conks
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Underfloor heating stopped working?

Post by conks »

Hi,

I'm a complete novice when it comes to this, so bear with me.

We had uf heating installed 6 years ago, controlled by individual room thermostats. For no reason the system has stopped working.

I've included a few photos of the system and would appreciate any guidance on where to start please. We have a heating engineer coming out in a week but could use it on now!

I wondered if it could be a sticking pump. I've played with the screw and released a few drips but no joy. The pump is a Grundfos Ups2 25-40/60.

As for the rest, I wouldn't know where to start!

All help appreciated. Thanks
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aeromech3
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Underfloor heating stopped working?

Post by aeromech3 »

:welcomeuhm: When you played with the chrome screw did you remove it to see if the pump spindle was rotating? If not do this withe the system off and use a small screw driver to engage the pump spindle and give it a small amount of twist to break any adhesion, then carefully replace chrome screw and nip up so as not to damage the 'O' ring or thread.
There should be some u-tube showing this trick.
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aeromech3
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Underfloor heating stopped working?

Post by aeromech3 »

An example of how to free a pump which has stiction:
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