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The pump isnt doing anything when its just the CH but when the HW comes on its doing something, i put my hand on it (with a cloth as its bloomin hot!) its vibrating.

forgot to mention when it was acting all quirky beginning of the year, it was towards the end only heating up the rads upstairs and not downstairs if thats any further help. The pump and valve also made a vibrating noise when we did the manual change on the valve.

Hi Needed some help if possible! Under massive financial strain being laid off recently and not looking forward to calling in a plumber for their horrendous fees to figure out whats wrong with my central heating - and the days are getting cold! Hot water is working fine with the system...