I have 2 thoughts: 1) The "check" lite shouldn't come on unless it's looking for propane to run and isn't getting it. However, 2) I think at one time long ago my check lite was on while set to electric only and a friend referred me to the power outlet in my bathroom that has a "trip" switch on it which activates instead of blowing a fuse. I can't think of the technical term for this switch. Find it in your unit and see if the reset button has popped out. If so, push it back in and as long as it stays in, try your refrigerator again. This may very well be the reason your fridge won't run now. Go find that switch!