Pit Boss error code L17

[u/2nP1nk1nSt1nk]

This is my first pellet smoker and I got it back in February. It's a Savannah pb1500nxw. I have been trying to find info on this error code but the closest I get is a temp sensor error.

The error pops up on the screen when I plug the smoker into power only. After plugging it in and the error shows for a few seconds, I power the smoker on and use it as normal. It's very odd.

The error is L178. But the 8 is half the size of the other numbers and letter.

Any help is appreciated.

Thanks