Differing heat levels in Radiators &

[BobWids]

This is the first time i've used this forum, but I'm hoping someone can help. I have an ongoing problem with my radiators which 3 plumbers so far have been unable to fix. When the central heating is on, the 1st floor radiators are very hot but the downstairs ones are cold. When I turn off the upstairs ones the downstairs ones get slightly hot.

I have just had a plumber flush through the entire system and all airlocks have been sorted, yet the problem is still there?

Finally air seems to get into the system which makes the pump shut down and the boiler go off and it needs to be bled to get it going again. Can anyone help??

 

[Softus]

Classic symptoms of a worn/faulty/broken circulating pump.

 

[BobWids]

Sorry, I forgot to mention that a brand new pump has just been fitted. I am currently pursuing the air in fresh water theory and bleeding at frequent intervals.
Regards.
Bob W.

 

[Fluffster]

Have you balanced the system?
Pete

 

[BobWids]

Thank you for your reply. Lockshields upstairs closed to about 1/4 flow and TRV's set to 2 to 3 to try and force more water downstairs. Still getting lots of air out. Hoping for the best.
Regards.
Bob W.

 

[gas4you]

What type of system is it, sounds like the pump is sucking in air, possibly from the open vent if you have one!

 

[shorky]

how many rads are downstairs and how many are upstairs, how old is the system, has it always done this, and are the flow and returns of at least 22mm under the floor

 

[Softus]

Sorry, I forgot to mention that a brand new pump has just been fitted.

That doesn't change the fact that your symptoms are classic signs of a worn/faulty/broken circulating pump.

I am currently pursuing the air in fresh water theory and bleeding at frequent intervals.

What theory would that be?

Lockshields upstairs closed to about 1/4 flow and TRV's set to 2 to 3 to try and force more water downstairs.

If you're serious about forcing the water to go downstairs, why haven't you got ALL upstairs rad valves completely completely COMPLETELY shut?

Still getting lots of air out. Hoping for the best.

Ah, the old 'hoping for the best' trick. I think Rothenburger actually sell a specialist tool for this now.

 

[nickso]

Still getting lots of air out. Hoping for the best.

Ah, the old 'hoping for the best' trick. I think Rothenburger actually sell a specialist tool for this now.

does it come with an attachment for tight spaces?

nothing worse than hoping for the best in a full loft

 

[corgiman]

Still getting lots of air out. Hoping for the best.

Ah, the old 'hoping for the best' trick. I think Rothenburger actually sell a specialist tool for this now.[/quote]


I WANT ONE NOW!!!!!!!!!!!!!!!!!!!!

 

[Softus]

does it come with an attachment for tight spaces?

Er, carefully avoiding the obvious and crude joke lying there fighting for breath, the answer is yes - I believe it does.

It also has a torch with everlasting bulb and battery, a spud key that fits anything anywhere, and a special clamp to stop taps from turning while you've got both hands on the basin wrench trying to get a backnut past the hardened Plumber's Mait that some dork plastered all over the tap tail.

Oh, and it has a handy flip-out apprentice that will fearlessly unblock Saniflows without ever taking you to an industrial tribunal.

 

[werewolf]

Sounds like air could be getting pulled in through open vent.Easy to check for.Or has pump been fitted wrong way round?