What’s happening?

Completed the start up on my Woodwind Camp chef and saw the internal temperature gauge do this. Has anybody seen this before?

I keep the grill in the garage when not in use. Just over 3 and I keep up with cleaning and maintenance. It’s about 45 degrees and I have a thermal blanket. Hopper is full.

It’s still bouncing around with temperature fluctuating anywhere from 1 degree to 8 at a time.

Anybody else have this issue?