No you can NOT do the magnet reset trick on that early revision.
Even Rev 'D' is maybe
REVISION 'E' is most current (although it is several years old)
You should contact Norcold..inform them you are having issues with your REV 'B' vintage Recall Box (not that it got wet and tripped)
Issues.tripped but fridge is not leaking..faulty recall box
Norcold MUST authorize replacement by a 'authorized' repair facility (dealer or mobile tech)
Mobile will cost you 'Service Fee' but New Recall Box should be FREE
(Take it into the authorized DEALER and No Charge------course it will most likely take Dealer months. Have to diagnose, then send for new box then schedule replacement, then forget to call you etc)