I bought this product 2-3 years ago and it worked very well for that time. Recently, the display started to fade and then it eventually stopped working altogether. I replaced the battery, and now the display works fine, but the temperature is completely wrong. Room temperature is displaying as below zero. Is there something I need to do to reset it?

It worked well but after the battery died and I replaced the battery, the screen is barely visible and shows random letters/numbers.

Was given this as a gift with the spirit bbq. Worked once went to use it a second time it show -15c temp in the room was +23. Went to change the battery now the screen won’t work. Useless