No heat in the radiators

[MikeF00]

Hi, i recently had a problem with the radiators on the ground floor of my house not getting warm when the heating was switched on. A bloke from the utility supplier came around and said that radiators had to be delicately balanced so the upper floor didn't hog all the hot water and some was available to circulate around the ground floor. Which he did before leaving. Whilst i understand what he's saying , im starting to think that the pump is just knackered , because as soon as he left the radiators went cold again.

i have checked the rads and there is no air in the system and they all full of water, but cold. The emersion heater is however nice and hot.
The bolier is a non-combi and is quite old (about 18 years) and is situated downstairs in the kitchen. The emersion heater is upstairs.

any ideas???

 

[Phil_Plumb]

have u checked for air in the rads?

 

[MikeF00]

no air in rads. I'm probably wrong , but its seems to me there is no movement of water through the system, which makes me think of a pump failure?

 

[SafeGasInstall]

could be

 

[hammers4spanner]

pump getting hot?

 

[MikeF00]

Don't know? If it is- what's it a sign of? It's knackered?

 

[Dotty]

Means the rotor's seized. Turn it off, unscrew the cap on the end, stick a screwdriver in and try turning it.

Then, with the cap off, turn the power back on, gently and carefully stick the screwdriver in and see if you can feel the rotor spinning.

 

[plumber0808]

Sounds like the pump but i would suggest getting someone to look at it or phone the company to come back. It could be a pipework issue if they haven't been piped up in the right size, could be a sludge build up.

Check your central heating tank has water in it.

 

[Howsie]

Your downstairs circuit could be slugged up if your pump isn't kaput.