Mains AC Reverse Polarity - Has this damaged my fridge/freezer PCB?
I don't think having neutral and phase reversed at the fridge would cause any problems, it does not make sense to make these fridges polarity sensitive as in many countries you can freely plug it any way you like.

Also D202 is definitely not a part of full bridge rectifier. Full bridge rectifier can almost be seen above the fuse and the big 450V capacitor, as that's the way these switching mode supplies are arranged. D202 looks like it's just a snubber diode with nearby resistors and capacitors.