Help...thermo king sb 200

I assume that you have changed the set point to 80. So changing the set point doesn't work? Have you tried turning it off, then on again? are they're faults?

 

Is it low on what is it, freon, antifreeze, oil. If so you will most likely have to go by the service dept at the units brand to be serviced. Sorry I can't remember which fluid it is that my husband has had to go by Carrier or some odd place, to be recharged.

 

Call TK and maybe they can phone fix you. If not you might have to visit TK. Hopefully its something cheap or free

 

Cheap and Free are two words you will never hear at a TK dealer.

 

Have you recently been in a heavy rain or at the truck/trailer wash? Maybe some water got inside the control panel and maybe after it dries a bit you may get use of the button again.

FWIW, next time just hit the defrost button and don't mess with raising the temp that high.

But if I was you, I'd start looking for an SB service place that's open or has emergency weekend service. Generally, when those panels start going bad, there is no recovery and you're going to have future issues that you can't afford until the panel is replaced. No, it won't be cheap, but that's life in the reefer biz.

Hopefully it's a newer unit still under warranty.