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Hi All, I have a system boiler (Glow-worm Ultrapower Sxi) where the boiler is over-heating resulting in the system switching off and fault codes F5 and F25. Before the system switches off there are rather uncomfortable grinding/banging noises focused on the heating water expansion vessel. I...

Hi All, I have recently bought a Victorian House and two issues that have appeared in recent weeks is that: 1/ Boiler Pressure drops (have isolated the boiler and no issue so leak must be within the pipework) slowly over period of 2 weeks until system needs to be refilled. 2/ Damp on...