Hi there
Thank you in advance for any help!
I've seen similar looking probs on this forum, but the trouble is most people don't follow up with a success story!
Since the cold weather started our combi boiler has been dropping pressure overnight to nearly 0 bar. All radiators have been bled and check all pipes & joints for leak - all ok.
The system will stay on happily doing the CH for days on end. But when it clicks off overnight, the pressure goes down to such an extent it won't click on the next morning.
A guy from Chaffoteaux said it could be a pin hole leak in the heat exchanger - so i isolated the CH and turn a hot tap on (suggesting that it would suck some water and pressure from the CH side), but this was not the case. Pressure still went down anyway (even with all radiators isolated and no hot taps being used). So this looks like it's definitely a boiler prob (but not heat exchanger)?
I've read alot about leaky PRV's and full expansion tanks. Is what i've described sounding familiar? Could there be any other solutions?
I'm not a plumber, but am very technical / engineering savvy. If i get the parts, can i fix myself? Don't worry - by you saying 'yes', then i screw it up, i won't sue you!
cheers in advance for any helpful words
James
Thank you in advance for any help!
I've seen similar looking probs on this forum, but the trouble is most people don't follow up with a success story!
Since the cold weather started our combi boiler has been dropping pressure overnight to nearly 0 bar. All radiators have been bled and check all pipes & joints for leak - all ok.
The system will stay on happily doing the CH for days on end. But when it clicks off overnight, the pressure goes down to such an extent it won't click on the next morning.
A guy from Chaffoteaux said it could be a pin hole leak in the heat exchanger - so i isolated the CH and turn a hot tap on (suggesting that it would suck some water and pressure from the CH side), but this was not the case. Pressure still went down anyway (even with all radiators isolated and no hot taps being used). So this looks like it's definitely a boiler prob (but not heat exchanger)?
I've read alot about leaky PRV's and full expansion tanks. Is what i've described sounding familiar? Could there be any other solutions?
I'm not a plumber, but am very technical / engineering savvy. If i get the parts, can i fix myself? Don't worry - by you saying 'yes', then i screw it up, i won't sue you!
cheers in advance for any helpful words
James