Hello, Should the pump overrun every time demand switches off (or is it a safety feature as-and-when)? My pump is not overrunning at all but the boiler is working ok but only when set to low, max 2 out of 5. Above setting 2 sometimes the overheat switch trips. I suppose if the overrun was working then I should be able to set boiler to a higher setting?
Thanks!
Thanks!