Drayton training - Motorised Valve fault finding 

We need a little bit more information, please could you contact our customer services at 0333 6000 622 or customer.care@draytoncontrols.co.uk

If the value doesn't move when energised it could be a problem with the motor or the value body could be seized. There are also micro switches inside that can stick if you draw to much current through them.

what would likely draw too much current through?@@Draytonheating

They just get gunged up. The small amount of lubrication in them can harden or evaporate over time.

First thing to try is to remove the activator from the valve body by pressing in the button on the opposite side of the position indicator. Then try calling for HW, both, CH only ect and see if it drives to the correct position when not on the body. If this works, it suggests that the valve body is seized however, the fact that you are hearing clicking sounds like something is failing within the activator itself.

Thanks for the info but I decided to replace the actuator (at great cost) just to resolve the problem as the valve was held (not seized fortunately) in the mid position so both HW and heating were running at same time when only the hot water was required. Having followed the testing procedure in the video to confirm the fault on the bench I took the unit apart and found the top micro-switch orange button was stuck into the switch, a slight press released it. After reassembly and test it works fine, also the orange wire max voltages I found were around at most 27vAC not mains level but I agree, test with caution. Just to note that when the valve moves from "W" through "M" to "H" there should be 2 distinct clicks on the MA1, if only one suspect a stuck micro-switch, easy fix. Hope this is helpful to others

Our technical support have a fault finding routine that they can guide you though to try and identify what the issue is. Please give then a ring when you are in front of the insulation - 0333 6000 622

Did you sort this?

For the actuator to move all the way over to the central heating position the grey wire needs to be live when there is no call for hot water. Our customer service team can guide you through expected voltages if you ring them when you're in front of the system - 0333 6000 622

Have a chat with our customer service team who can assist you - 0333 6000 622

Maybe say thanks for the feedback and we'll look to get it remade

Have a chat with our customer services team who will be able to run through some fault finding routines - 033 6000 622

What you described is the value working as intended. The valve will remain the last called for position till it's told to go elsewhere. If heating was the last call, the value will remain the H position but the boiler should stop firing if there is no demand. The value won't move until water or both are called for.

@@Draytonheating is there anything else that can cause this issue with heating not always turning off and leaving boiler on?

It could be an internal boiler issue that keep sit running but to establish this we would need to be measuring the voltage on the white wire of the valve under the fault condition.

Yes, 27651SX is the Screwfix part number for the MA1 actuator only. So long as the old actuator has the push button to detach from the body this will fit.

The activators are detachable from the body so water shouldn't naturally have access to the activator however, if you get a leak pass the spindle, the system press could force water into the activator.

It sounds like there may be some debris within the valve body that is preventing the paddle from sealing against the valve seat. Sometimes running your heating and varying the pump speed is enough to dislodge this. Otherwise, you may need to consider flushing the circuit

Chat with our customer services and they can help you run a test on the actuator - 0333 6000 622.

Hi, yes what is your question?