hpa2

Hi, A bit of a strange request… I have a FP715 which is controlling a pair of HPA2 valves. In the past, despite both valves working fine, the ‘pump’ microswitches have failed closed and kept the pump running. Determining the culprit by manually operating the valves showed which one was duff...

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...