I have the above mid position valve which seems to be operating in reverse. With the motor out of the unit, it seems to drive when the micro switch is saying that it is at the end of it's travel and is holding when it should be driving the switch. I'm guessing it's the circuit board in the actuator but I need to know if anyone out there knows better and if it's a full actuator replacement or can I get the ciruit board from anywhere?

Penarth Confused, January 2010

replace the actuator

Ian, January 2010

dont think this is the 3 port valve should check all stats are operating ok

avs, January 2010