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Or a faulty programmer?

Removed the centre screw and the the pump was spinning. Screwdriver was in but made a noise when hitting the shaft spinning. Any thoughts? Also any thoughts on not being able to run CH and HW at the same time?

Hi, We've just purchased a new house and have discovered that when the CH and HW are both on, only the hot water cylinder heats up and the CH remains stone cold. Both work ok on their own. In addition the CH is a bit slow and rads take a while to warm up, I've noticed the boiler comes on for...