Well, it's working fine as in the radiators are hot - being about as technical as a cabbage that's all I can really tell you. Sorry - not being much help I know. Am grateful for your replies so far.
The job is pretty much a straight swap - the current boiler vents through the wall but there is a blocked off roof vent from a previous boiler which they can re-use, and need to fit the condensate drain (?)
Do you know why it might only fail occasionally though please?
Hi, this is my first post so I hope you can help. We have just had a new bathroom installed - part of which is a Hudson Reed A3003 shower, fed from a Gloworm Swiftflow 80 boiler, which is approx 10 years old, maybe more. 9 times out of 10 it is fine but every so often the shower will get hot for...