Can you please advise me. I have f5 in red flashing on boiler. heating was fine earlier, then turned on hot water to run a bath, ok at first then water went cold. Tried resetting boiler but still the same, pressure is on 1.1 bar , can you help please ?
i have the same problem after the builders took one of the downstairs heating panel off and put it back on. The pressure bar is on 1.3 though... I tried restart it, hot water came back on, but the red light keep flashing and F5 reappeared....
elena
October 2011
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