Underfloor heating only heating half way

[123rd]

Hi,
Just wondering if anyone else has had this issue... had wet ufh out in extension and retro fitted into dining room a couple of years ago.

This winter the second half of the dining room doesn't seem to be heating up. This the furtherest part away front the source if you know what i mean.

The heating is one big coil so I'm not sure how this would happen.

Any ideas ?? Thanks

Could be an airlock. You’ll need to get a plumber in to fix it. Ideally the one that installed it.

Can you go to the manifold and feel the temperature of the return pipe. It should be warm/hot if the water is circulating properly. Is the heating working properly in the extension? Have you tried turning off the heating in the extension to see if that improves flow in the dining room?

My biggest room has three separate loops of pipe. One section failed to heat and it needed a little jiggle of the valve which had stuck and it was sorted.

Thanks - we are trying to get hold of the plumber. Normally very good but I guess a bit busy at this time of year...will have a look into your suggestions
Thank you

Have you checked the boiler pressure?