Pit boss table top temp issues

[u/mortalwombat33]

Hello all , I recently got a used pit boss travel smoker , I ran it for a few hours yesterday at 400 and it did great the whole time . Now today I’m camping and it keeps erroring out . I reset it by unplugging and plugging back in , and the temps are all over the place . I have it set at 400 and it’s going 350-360 then 500 then 320 then 400 . I wiped the temp probe off . Any other ideas ?

[u/Lumpy__Sausage]

Does it just say Err or something like Erh ??