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- 22 Oct 2007
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Just drained and refilled my central heating after replacing a sheared off valve...(no leaks! )...my first bit of plumbing!
I've bled all radiators starting from downstairs but after running the boiler they remained cold. (conventional open system with tank in loft space) I then noticed the pump was very warm to touch but the pipes either side were cold, after some persuasion with a hammer the pump whirred into life, but the pipes either side remained cold.
Can anyone tell me how to bleed this pump? Its on a 15yr old Potterton boiler, I've felt all around the casing and can't find anything that feels like a bleed valve. I can't see the top of the pump without unscrewing the top cover of the boiler, but seeing as I can't feel anything I've not removed it so far.
Also, can anyone tell me what the switch does (red arrow) on top of the pump? I knocked it whilst trying to find the bleed valve, pretty sure its back in the original position but just want to check what it does...just in case
Thanks
I've bled all radiators starting from downstairs but after running the boiler they remained cold. (conventional open system with tank in loft space) I then noticed the pump was very warm to touch but the pipes either side were cold, after some persuasion with a hammer the pump whirred into life, but the pipes either side remained cold.
Can anyone tell me how to bleed this pump? Its on a 15yr old Potterton boiler, I've felt all around the casing and can't find anything that feels like a bleed valve. I can't see the top of the pump without unscrewing the top cover of the boiler, but seeing as I can't feel anything I've not removed it so far.
Also, can anyone tell me what the switch does (red arrow) on top of the pump? I knocked it whilst trying to find the bleed valve, pretty sure its back in the original position but just want to check what it does...just in case
Thanks