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Yes gets very hot, even more when heating/ hot water running!

Hi Jackthom Thank you for your reply The head only gets very hot after heating is stopped calling and no HW called. Yes the valve was new and has been replace by a plumber and he replaced again as he thought was faulty! The wiring is the same as link to Honeywell diagram, apart from...

Hi All, I replaced a 3 way valve (V4073) as rads where getting hot when just HW on, that part is now fine. But after CH switches off, from room stat or from programmer/timer, there is a faint buzz coming from the valve head and after a short time the head becomes very HOT! (If HW is still...