L1 OP Code on Norcold Fridge--Help (Norcold Recall Issue)

The recall box incorporated an additional high-high temp sensor installed higher on perk tube----700*F.
When high-high temp excursion is sensed it trips all 12V DC power so no operation on electric or propane can occur

A 'strong' magnet can be used to reset recall box.........move it back and forth across top face of box until you hear a click/RED light goes out.

BUT question is:
Did it false trip
OR
trip due to high-high temp (cooling unit failure/cracked tubing etc.