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that's what I thought - replaced the filling loop - the non return valve is OK, not dribbling back out when it's unscrewed. heat exchanger - I thought this again, second plumber out ruled it out as the system pressure doesn't equalize with mains pressure (the system stays at 1bar). after...

bump in case anyone that has absolute expertise with the delightful jaguar 23kw hasn't seen my thread :D

Hello chaps, A bit of a quandary - for a little background, I had a leaking PRV that wouldn't seal and kept on dribbling out of the overflow after a couple of plumber visits without resolution, I decided to have a go myself. I've replaced that and there's no drips now. as a result of that...