Hi, I have a Drayton Lifestyle 2-Port Motorised valve which has a habit of sticking on, i have had the snap on Actuator replaced twice in 2 years and now 6 months later its doing it again. The boiler turns off but the pipes are hot and the water is gushing around the system. i am able to eventually turn it off by easing the manual lever on the side of the actuator . Am i unlucky that this is happening a lot or could the valve be fitted wrong causing this to happen.Or the Wireing? Hope this makes sense and someone is able to give a litttle guidance. Its not a big job for the Plumber i use to change but costly and frustrating