Thermal runaway check too aggressive

[eh9]

@brent113

The bed uses bang-bang control.

For future reference, @b0bjones has posted video from a thermal camera showing the behavior of this control method on the heated bed.

Thermal Images of 3D Print Bed

Well I’m having fun with my new thermal camera. Here’s a video of the variation yo-yo as it tries to hold a steady 80c. [Snapmaker 2.0 A350 3D Bed Thermal Video]