So, Anova Support replied, they will not support a replacement since what i did violated their warranty. Now, the question remains if using the 110/120V in a 220V socket has definitely fried something, or not, and if it did, what would be the first part to die - fuse?. the thing is that i was able to use it 2 times without any problem.
I would assume it would be the fuse to protect the other electrical components and avoiding fire or anything worse. So since the warranty is gone, how can i tear the nano apart? there is no screw visible anywhere to remove that plastic sleeve that's over the heating coil. if i get that off without breaking anything i can then open up and check if the fuse is toast. Any nerdy engineering advice? Calling all DYIers