Hello everyone. A couple years ago I installed a p35i and for first 3-4 years ran perfectly. This year it has to be difficult and stubborn. It will start up and burn but suddenly cuts off all power 3-5 seconds. It will do this after 20 minutes or 6 hours totally random. The knobs on control panel either respond or don’t again purely random. Stove no longer throttles down to burn out instead cuts power 3-5 seconds then restores it and either burns out/off or goes back to full tilt/heat mode. It doesn’t matter room temp/stove temp it behaves the same way. I have to keep it in manual igniter as some times will get “stuck” in ignite mode after burning 14 hours. Did x2 deep cleans only 15 bags apart. Stove is burning very dirty. Could the control board be bad?