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Hi, can anyone help me with the above machine which will only run for a couple of minutes despite resetting - gives a 9 flash error code.

I have a problem with an open-vented system returning an 06 flow error code after a minute or so when on DHW only. CH is aok. When CH is on and then DHW is called for, system runs ok and hot water pumps to storage tank. Pump is new and DHW motorized valve is opening fully. Installation has a...

Anyone managed to work out a comparison between carpet + underlay and hardwood flooring + underlay? I have some numbers but no idea if they are correct. Thermal conductivity (k) of good typical carpet + underlay = .05 (W/mK). Hardwood typically 0.17. Fibre or foam underlay 0.05. Translating to R...

Can anybody suggest a reason why I shouldn't have ducted my cooker extractor fan into an internal 110mm waste stack (mushroom fitted on top). Waste stack is full of fresh air (no smells at all) and duct is fitted with spring-loaded in-line backdraft shutter as additional precaution. Connection...