Combi Boiler Playing Up -Someone HELP!

EliteHeat

Juney wrote: »

I can see that you would all want to be responsible in your posts, but I had already said that our heating was oil, and we in no way suspected that this would be anything but a plumbing repair. It was knowing what to look for that was the problem, and we found YorkshireBoy's post and others very helpful. Please do not disuade them from offering advice, it is invaluable to people like us who are pretty capable on the DIY front, and would certainly want to attempt a repair ourselves before calling out a boiler engineer. We don't know any engineers in this area, and have seen enough programmes on "Tradesmen From Hell" to know that not all can be trusted.

Thanks to those who have given advice, I'll let you know how we get on.

!!!!!! are you on about? I have not tried dissuade anyone. I have merely stated that it is not a diy job imo. Where in your post do you state that this is an oil appliance? Do whatever you want. I really do not care one way or another.

Please read the responses of people who have tried to help you more carefully in future - I find this extremely annoying.

Juney

EliteHeat wrote: »

!!!!!! are you on about? I have not tried dissuade anyone. I have merely stated that it is not a diy job imo. Where in your post do you state that this is an oil appliance? Do whatever you want. I really do not care one way or another.

Please read the responses of people who have tried to help you more carefully in future - I find this extremely annoying.

Gosh, I can see where the "heat" part of your user name comes from:rotfl:

You really should chill a bit:rolleyes: :cool:

So sorry, I thought I'd mentioned it was an oil boiler, but I was wrong. I consider myself well and truly chastised;)

Yes, I like smileys :j you should try them sometime.

Juney

YorkshireBoy wrote: »

I had a very similar fault with my 13 year old Worcester 280 combi boiler recently.

Fault was traced to a burst bag in the expansion vessel. Diagnosed by checking the air pressure (should be 0.5 bar), and water came out of the schrader (tyre) valve!!

New expansion vessel from Plumb Center was around £50 inc. VAT.

YorkshireBoy thanks so much for your reply - when I tested the pressure, water came out of ours too. My husband is picking up a new expansion vessel today - so hopefully hot water later tonight!:T

Of course we may need a diverter valve too as Eliteheat suggests, so we'll have to check that too.

economiser

Juney wrote: »

YorkshireBoy thanks so much for your reply - when I tested the pressure, water came out of ours too. My husband is picking up a new expansion vessel today - so hopefully hot water later tonight!:T

I had a ruptured diaphragm diagnosed by a registered Corgi engineer when boiler was serviced and was quoted about £100 to supply and replace. I thought it worth a try to pump up the vessel, he said this would be a waste of time. When he had gone I tested valve and small amount of water discharged (condensation?), then nothing. Followed instructions to isolated and drain boiler. Pumped up with foot pump (hand held of course), refilled boiler and everything has been fine for the last two years. Schrader valves can leak just as they can on car tyres.

Juney

economiser wrote: »

I had a ruptured diaphragm diagnosed by a registered Corgi engineer when boiler was serviced and was quoted about £100 to supply and replace. I thought it worth a try to pump up the vessel, he said this would be a waste of time. When he had gone I tested valve and small amount of water discharged (condensation?), then nothing. Followed instructions to isolated and drain boiler. Pumped up with foot pump (hand held of course), refilled boiler and everything has been fine for the last two years. Schrader valves can leak just as they can on car tyres.

I've just been and tested ours again, and there's quite a bit of water coming out - so we still need to replace it - but thanks for the reply, and glad yours worked out OK.