Hello everyone.
I've been through the Wiki and other posts and they've been some help, but I'm just a DIYer and I'm a bit stuck and we have no heating or HW.
I have a Potterton Suprima 40L boiler and we've had trouble with it in the past but it's been fine recently.
Now, when the heating or HW comes on, it fires up (fan runs, gas lights everything seems OK) then the boiler makes a kettle boiling noise, pipes start banging, boiler shuts down. (sometimes the pipes start banging after the boiler shuts down).
I've found the circulation pump in the airing cupboard and the big silver screw in the end, but that just unscrews until there's a dribble of water but it won't come out so I can't try manually turning it?
Should I be able to hear or feel the pump operating if it's working? Because I can't hear or feel anything?
Is there something else I should know about the screw?
Is flushing the system worth the effort if I'm not sure about the pump?
I've been through the Wiki and other posts and they've been some help, but I'm just a DIYer and I'm a bit stuck and we have no heating or HW.
I have a Potterton Suprima 40L boiler and we've had trouble with it in the past but it's been fine recently.
Now, when the heating or HW comes on, it fires up (fan runs, gas lights everything seems OK) then the boiler makes a kettle boiling noise, pipes start banging, boiler shuts down. (sometimes the pipes start banging after the boiler shuts down).
I've found the circulation pump in the airing cupboard and the big silver screw in the end, but that just unscrews until there's a dribble of water but it won't come out so I can't try manually turning it?
Should I be able to hear or feel the pump operating if it's working? Because I can't hear or feel anything?
Is there something else I should know about the screw?
Is flushing the system worth the effort if I'm not sure about the pump?