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Balls, it's gone again, and not apparently through lack of pressure, which has actually INCREASED, it's around 1.8 bar. Is that TOO high? The dial goes up to 4 - do I keep increasing it or should I decrease it - and if the latter, how? I only seem to be able to increase pressure using the black...

"Finally the black plastic "tap" at the left. This will not budge easily. Again I didn't want to force anything. Could this be the one though?! " It was indeed that one. It was stiff but I found some inner strength and courage :) Turned about 1/8 of a rev anticlockwise, pressure increased...

thanks, sorry not been back to the forums. other investigations do suggest that it is merely a case of low system pressure. HOWEVER. I don't have the manual for the boiler and failed to find it online. I am not sure which valve or tap to turn to increase the input pressure. I uploaded some pics...

Hello all. I hope I am posting in the appropriate forum. To the point. I have a GlowWorm Swiftflow Combi Boiler, accoding to the schematic it's a 100 or 120. It's probably about 10 years old. I've been in this house with this boiler for 2 years, no problem No hot water from taps tonight so I...