Clicking Motorised Heating Valve

[JoeMic]

I had been hearing a loud clicking noise from a motorised central heating valve, as per the following clip:

I've now moved the lever on the valve to the position shown in the attached photo (the opposite of where it was) and the clicking has stopped. I can see that the lever's current position is the opposite of the position that the levers on my other heating valves are in. Is there anything wrong or am I OK to leave the lever on the formerly clicking valve in its current position? Thanks

 

[ianmcd]

Sounds like the synchron motor is jumping or has lost a tooth on the cog

 

[JoeMic]

Cheers. Does that mean it needs to be replaced?

 

[ianmcd]

no you can just change the motor, remove the cover and watch it when it is clicking and you will see if it is jumping, the cover is only 1 small screw and the cover slides out

 

[JoeMic]

Thanks very much, will do.