Central Heating Radiators not all working

[msattitude]

Hi everyone,

Wondering if anyone can help please

I have a Glow Worm Hideaway 50b Boiler which all fires up OK
It seems to be heating the hot water!

The two nearest radiators upstairs get hot but that is as far as it goes

Two other radiators upstairs furthest away stay cold and all radiators downstairs stay cold.

The Pump has been replaced so brand new and working fine and I have bled all radiators but still no luck in getting all of them hot.

This was all working fine a couple of days ago and then the radiators just stopped getting hot!

Can anyone suggest anything else this might be please?

Thank you

 

[stardanny]

Hi.

Do you have a zone valve? 3 port valve? How many pipe coming out of boiler?

Dan.

 

[msattitude]

Hi.

Do you have a zone valve? 3 port valve? How many pipe coming out of boiler?

Dan.

Hi Dan,

No idea what these valves are but it has two water pipes going in/out of the boiler. (plus gas feed pipe)

It has Gas valve, thermostat and mains 3 way connector

Another thing I just noticed is that when it fires up, it doesnt stay that way for more than a couple of minutes and then shuts down, then a few minutes later fires up again and so on ...