Air lock in central heating

[grundy14]

I`ve drained the radiators Sludge was in them . I`ve refilled the system. But the radiators aren`t getting warm. I`ve been round & bled them Water is coming out but no air. What can I do now. Apart from starting again.?

 

[taydo]

are there any inline bleed valves in the loft or near the boiler etc

 

[grundy14]

I can`t see any in the loft.There is what appears to be one nr the pump But it is a big nozzle bigger than the ones on the radiators.

 

[taydo]

thats an auto bleed valve it shouldnt need touching.

what happens when you turn the system on do any pipes get hot, have you got hot water

 

[grundy14]

When I put the water only that gets hot. But when I set to water & heating the heating isn`t working. I got quite a bit of air from an upstairs radiator this morn. But just water coming out since then from them all. I think it`s the pump (in the airing cupboard,) that is quite warm.

 

[grundy14]

I had to get a plumber in. I didn`t get any answers to my question. It was air in the pump