If your code can start fire, you are doing something really wrong.
For first run, always use PSU with limited power(at least current limiting) with no load at output. Move actuators if you have them manually to check sensors.
If you are creating PSU controlled by PIC(or any mcu), simulate output voltage by applying voltage on feedback.
Any way you must have HW protections that would prevent code to do catastrophic damage.

As all software in this world PBP can have unsuspected bugs that doesn't manifest all time. I found one few years ago. Other compilers have many more than one.
Also as this is all clock dependent, it can freeze due falling oscillator eg lot of vibration can cause crystal to breaks.

I saw result of using PLC with untested code on 300ton press, and actuating pressing and pulling actuators, it wasn't pretty... And that could be avoided if hydraulics was done correctly to disallow engaging both actuators in opposite directions. Or using relay that would disable inputs to other solenoids, etc...