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Hi, I have a Ravenheat combi boiler. It is probably at least 15 years old now It has stopped holding the correct pressure - pressure shoots up to around 3 bars and the water discharges continuously out of the overflow pipe to outside until I manually depressurise it. Water temperature in...

Hi Ron, I have exactly the same problem with a Ravenheat boiler which is also about 15 years old. Keeps discharging through the overflow pipe to outside, have to manually release the pressure, and the water temperature in the shower fluctuates. I don't have the skills to do what you...