Potterton Netaheat 10/16

[tenroom]

My decorators removed one of my radiators yesterday to plaster skim the wall behind it. They put it back on today and now I don't seem to be able to get any hot water. I mean the boiler comes on when I switch it on but it only stays on for around 5 minutes and there's absolutely no hot water even though the boiler, an old Potterton Netaheat 10/16, the pump and the exchange valve get very hot. There's also a noise like pumping air . . .

I'm sure there's an airlock somewhere but dont see how the radiator being removed could affest the hot water. When I vent the radiator they took off there's a hissing sound.

Please help . . . I'm sweaty and i need a shower . . .

 

[doitall]

Lack of water.

Check the header tank and free the stuck ballvalve first.

 

[tenroom]

All three tanks (hot, cold and heating) are full of water

 

[doitall]

When you open the air vent on the radiators (with the pump off) does the heating tank run, could be the cold feed is blocked then.

 

[tenroom]

Not sure . . . the radiator in question is downstairs in the lounge whilst the boiler is in the kitchen and the header tank is upstairs