Heating comes on temporarily

[Levaldo]

Hi folks, in last couple of weeks I've been experiencing problems with my heating it seems to come on and then turns itself off. Other times it works fine .
Hot water has been fine. I was reading up on symptoms online (as I haven't got a clue,hence why I'm here ) and it seems to point me in the direction of it needing an actuator Valve.

Would this be correct or could it be anything else . Cheers .

 

[island fling]

I would maybe looking at the programmer, usually if a diverter valve is broken then your heating/hot water will stick on. Not always, maybe check both but if it’s coming on randomly then I would look at your programmer.

 

[king of pipes]

Could be a few things is it a 3way valve ?

 

[Levaldo]

Yes I think it does have a 3 way,it's a Vokera compact 29.