Printing issue: extruder seems not heating

[Nocturne84]

I have an issue with the prusa i3 pro b, this is my first time using a 3d printer, so i'm not so expert.

I'm trying to print an object using the Repetier-Host, but it's stucked on Extruder Heating, and the extruder is stucked at 33°

On the led panel the temperature is 33/210
and for the hot bed is 116/64°

What information can i add to know what is the problem?

Thank you