I just ordered a replacement thermometer for my Schreiber APM6121 integrated under-counter fridge (with ice box) and can’t find any instructions online as to where the thermometer is sited. The control knob is at the top of the fridge next to the light, but apparently I have to remove the insulated housing to get to where I need to inside. I’d be most grateful for any pointers or things I need to be aware of.