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Tony.. not at all.. just that I had one guy say it may be a faulty thermostat.. another say it may be a sensor.. I must admit a furred heat exchanger makes sense.. even to a layman like me.. I have drained a little water from a Rad and its pretty clear.. slightly sudsy like it has alka seltzer...

The heating works fine.. house is 3 bed edwardian.. all rads are nice and hot.. although I must admit they are a tad cooler down the bottom (means some sludge??) Te pump runs after the hot water is switched off.. sending the hot water down the central heating route but this doesn't prevent the...

I'll drain a bit off and let you know.. the boiler only kills the pilot after a bath.. central heating still runs fine regardless.. last engineer said it was lilely a furred heat exchanger.. its hard to know what to think!! Gary

I dunno.. just think it sounds like a mechanical sound and don't know what else to think.. it may be coming from the silver unit where the reset button is located.. ie the white knob I have to press to refire the pilot.. but why does it make this sharp sound.. the pilot doesn't go out?

My Ravenheat 820/20 makes a loud sharp pop or bang after the CH has been on and is cooling doen. I think it may be the Diverter Valve sticking? No problems with heating or HW but when a bath has been run the pilot goes out after HW is stopped...? Connected~??

Thanks for all the info. All I can say is that the Central Heating works fine and does not cause any cut out even after prolomged use of the boiler. The DHW problem occurs a minute or so after running a bath . I switch on a HW tap when it cuts out and the water is almost boiling.. run it for a...

I have a Ravenheat Combi (came with the house). Although well kept and serviced has a problem when running a bath. After running hot water for a few minutes and then shutting it off the pilot is extinguished after about 60 secs with a definite mechanical noise as if something has sprung out. i...

It seems like water is leaking from the bath tap under the base where it sits on the bath (the seal). What causes this? How do I fix it please??