Power surges ,misuse and abuse(not tge case here) and other acts of god are very very very seldomly covered by many maintenance contract .
Sound like the CPU board is toast , the cost of the board loaded with the correct software and adjusted for optimal performance are PRICELESS
I am not an Otis employee just keep in mind so many things are now software,computer oriented with elevators now a days
Good luck on your travels
This is true however I know here, most commercial building insurance will have motor fuse or surge cover.