faulty actuator

[dullrider]

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

 

[gasafengineer]

these are standard BG actuators - is it possible

Complete sh$te , do yourself a favour & change them out for honeywell , i can guarantee the others will play up in a short space of time.