oven not working

Hello all

I was recently using the oven, when i decided to turn the heat up from 170 to 220, I returned back 10 mins later to find the oven had cooled down, with very little heat there, but had some.

The red light on the oven temp dial is comming on at around 50, the fan, light all work and some heat is there. the grill works as well.The oven will heat up slightly but not to what it should be

Now I have to assume that if the elment had gone it would do 1 of 2 things.

1) blow the circuit Breaker
2) not heat up at all

( its not doing either of theses )

But i could be wrong with the above, then I thought it could be the Safety Thermostat, or the thermostat,but at this point i’m guessing.

any help would be appreciated

Thanks

Jason

Neff Oven
E-Nr B1920W0GB/02
FD 7709