Vaillant boiler not giving any heating

[Harleybear]

Vaillant boiler won't heat up the radiators. Iv turned heating on today first time since maybe January, I have hot water but no heating why is this?

 

[Harleybear]

And this came up aswell

 

[Mottie]

Heat only or combi boiler?

 

[Elkato531]

Have you checked the obvious? Did you turn the thermostat up?

 

[DP]

Vaillant boiler won't heat up the radiators. Iv turned heating on today first time since maybe January, I have hot water but no heating why is this?

A better picture would help