Hello, I have just replaced my Drayton MA1 actuator as the boiler would not switch off. All worked as expected for 3 weeks but now, whenever the heating comes on and the black tab moves to H, it never moves to W or mid position unless I turn the mains off and the actuator seems to release from the H position.
I’ve tried resetting the programmer and turning the thermostat down to its lowest to try turn the heating off put no joy.
Is there any other tests I can do to see if it’s a wiring issue or a switch issue?
I’ve tested the value and it can be moved by hand so belive the issue is in the actuator, which is only 3 weeks old or it’s wiring.
Any guidance appreciated
I’ve tried resetting the programmer and turning the thermostat down to its lowest to try turn the heating off put no joy.
Is there any other tests I can do to see if it’s a wiring issue or a switch issue?
I’ve tested the value and it can be moved by hand so belive the issue is in the actuator, which is only 3 weeks old or it’s wiring.
Any guidance appreciated