Boiler issues. Pls Help

[Liam Fox]

Basically, My Gas turned off duebto the meter running out. I go out, put gas on the card, Put it on my meter and come back in to see this. I won't lie, I have turned the Salus box this on and off and tried to see if that fix it. It did not. Any help.
Oh, And I really have no idea about this stuff so any help is gonna be better in real simple English and easily explained steps. Thanks.

 

[terryplumb]

Have you pressed the reset button ( press and hold pressed for 3 seconds)??
Please tell us the boiler make / model I.d.

 

[kidgreen61]

Not familiar with that boiler, but doesn't the display suggest low system pressure?

 

[stem]

Looks like the temperature set on the thermostat is exceeded, so the Salus isn't switching the heating on.

When the thermostat is 'calling for heat' this little flame symbol shows:

I don't see that showing on your thermostat:

So I'm assuming the temperature is set to a lower value, 20 or 21 would be typical, and as the current room temperature is 23, the Salus isn't turning the heating on.