judging by other comments on forum I seem to have a fairly common problem - pump and boiler continue to run when nothing calling for heat and all 3 valves are closed (circulation thru bypass only)
I have 3 x 2 port actuators - problem temporarily resolved by disconnecting zone 1 switch (grey wire)
these are standard BG actuators - is it possible to fix the dodgy switch rather than replace the actuator
I have 3 x 2 port actuators - problem temporarily resolved by disconnecting zone 1 switch (grey wire)
these are standard BG actuators - is it possible to fix the dodgy switch rather than replace the actuator