I wonder if anyone can help, I have a Ferroli F30 combination boiler which is about 4 years old. The hot water is working but comes on at first then after about a minute goes off, then comes back on and is fine. The main problem i have is that the central heating has stopped working. The boiler fires up as you would expect but after the burners have been running for about a minute there is a metalic banging sound which comes from the boiler and it then cuts out. I have had a Corgi fitter out who advised it may be a problem with the circuit board around Â£300 to fix but he did not guarantee this would cure the problem and suggested a new boiler. Any suggestions on what the problem is and is it something worth fixing?
Thanks for any help