I have an older model of the P10, and since I purchased mine they have made a few changes in their firmware. So some of the advice I give may be different than your model.
My model; if the bisquette burners will not work, the whole system shuts down.
I'm not sure how experience you are with the P10; whether it is your first time using it, or if this problem has occurred after several uses. So I'm just going to go over some basic steps that I know will cause this problem.
After you dial in the setting that you want, you need to push the dial in. You will hear/feel a soft click. That click lets you know your setting have been saved. If you don't push the dial in, the setting will reset to the default - which is no power going to the bisquette burners or the heating elements.
If the above advice does not help, you should contact Bradley customer support. There may be a problem with your firmware, or circuit board.