What happened?
The Original Prusa XL can detect a power fault on the Modular Bed, with hardware measurements: in case this happens, and is related to the power panic feature, the printer display will show the message: "Power panic".
Error name: Modular Bed Error
Error code: #17320
How to fix it?
A visual inspection
Before accessing any of the electronic boards, ensure that the printer is fully cooled down, and switched off for at least 10 minutes.
Inspect the modular bed for physical damage, such as scratches on any of the heatbed tiles surface.
Inspect the wiring between the Sandwich board and the Modular Bed for a loose connection, or a broken cable.
In case of any further doubts, do not hesitate to contact our customer support.