Well, pushing the control knob with power on did nothing and the display remained blank, which means, of course it still could not show any error codes. However, proceeding further with the second suggestion, unplugging and removing the small access panel on the back, gently pulling the insulation aside, revealed the heat sensor and the little black capped pin in the middle, which I pushed and heard a click. This must have successfully reset the device, as when plugging the cord back in and flipping the switch, the P10 powered on as usual. Fantastic!!
This is a good feature intended to protect everything from high heat, though why it tripped this time, (and don't say "high heat obviously"...) is not clear as there was no evidence of fire and the ambient temperature outside was not too high or low. At any rate, I am happy and since I almost never use a heat setting above 250F, I doubt the cut-off will trigger again, but if it does, I now know what to do.
Excellent help, thank you!
