stuck on

We've recently moved to our first home and it features an officially "non starter" boiler. When viewing, I thought I recognise the problem. New PCB and the system is running! Now I am trying to troubleshoot the next problem: The system works for most of the day alright. Heating and Hot water...

Hi all, First time poster here, so sorry for any silly questions! Have a similar issue to the thread below: http://www.diynot.com/diy/threads/grundfos-circulation-pump-wont-switch-off.415725/ However, I changed both of my actuators but here it seems I still see the problem, I had slack...