Well the plumber hasn't come yet to see to the rad I cannot bleed. However,
I left the heating on today for 3 hours and only in the last hour did the
rads get warm/hot. 2 of them are still stone cold the others warm to hot.
But so long to get warm. Could it be the pump at fault here? Thanks

On Dec 2, 7:29*pm, "Ben Short" wrote:
Well the plumber hasn't come yet to see to the rad I cannot bleed. However,
I left the heating on today for 3 hours and only in the last hour did the
rads get warm/hot. 2 of them are still stone cold the others warm to hot.
But so long to get warm. Could it be the pump at fault here? Thanks

Could be simply not enough water in the system, when you bleed the
highest radiator does water come out, what is the pressure. I have a
leak somewhere, every year I fill it a bit or the highest radiator
would be all air.

ransley wrote:
On Dec 2, 7:29 pm, "Ben Short" wrote:
Well the plumber hasn't come yet to see to the rad I cannot bleed. However,
I left the heating on today for 3 hours and only in the last hour did the
rads get warm/hot. 2 of them are still stone cold the others warm to hot.
But so long to get warm. Could it be the pump at fault here? Thanks

Could be simply not enough water in the system, when you bleed the
highest radiator does water come out, what is the pressure. I have a
leak somewhere, every year I fill it a bit or the highest radiator
would be all air.
Just a thought. I haven't seen the earlier thread. Is it an old style
open system with a header tank? If not, stop reading as the rest is
irrelevant.

If it is an open system it could be that either there is no water in the
header tank to top up due to a seized valve or the downfeed pipe from
the tank is blocked. This will cause the lack of water described above.
As you realise I had exactly this problem. The blocked pipe.

Peter Scott

On Thu, 3 Dec 2009 01:29:16 -0000, "Ben Short"
wrote:

Well the plumber hasn't come yet to see to the rad I cannot bleed. However,
I left the heating on today for 3 hours and only in the last hour did the
rads get warm/hot. 2 of them are still stone cold the others warm to hot.
But so long to get warm. Could it be the pump at fault here? Thanks
I've had a situation where the bleed valve hole was blocked from
inside, I think a manufacturing fault. A poke with a thin (jewelers)
screwdriver sorted it, but be sure to have a cloth and the bleed screw
close by and get it in quickly - I didn't, so had to keep my thumb
over the hole (and hot water) while yelling for the Mrs to come in
from the bottom of the garden and find the screw for me! Lesson
learned.