Central Heating Woes

[stonebas]

I have just moved a downstairs radiator and allowed the system to drain down through the disconnected pipes. Unfortunately I didn't know you had to switch off the boiler first! I have refilled the system and bled all the rads but when I switch on the boiler I dont get hot water to the cylinder or the rads.

I think its an air lock in the pump. Is it OK to bleed the pump while it is running and is it normal for it to take nearly an hour? Could the problem be somewhere other than the pump? What problems have I given myself for not switching off the boiler before draining down?

Boiler is an Ideal non-combi and pump is a Wilo Gold 50.

Thanks

 

[Strachan]

Need more info. You refilled the system, bled the rads etc. What happens when you ask for heating, pump run o,k etc?

 

[tomy]

Most likely is the pump is burnt out

 

[stonebas]

I refilled the system but I switched on the heating for about 5 minutes before I bled the rads! When I turn heating or water on, the pump is noisy and if I bleed the pump it seems to spit air out of the bleed hole for ages.

I seem to be getting hot (warm) water to the tank and a little bit of heat in the first rad. I can hear air in the system near the boiler. I dont know how hot the water in the tank will get or how far the radiators will heat up because I am worried about running the system for too long in case it caused further problems.