Kenmore Refrigerator Not Working?

I have found that sometimes things don't work properly if they are shut off for long periods of time. Goodness knows why that is, but that seems to be the case. My renter refused to use the dishwasher in our mobile home, and when she moved out, the thing wouldn't work any more. However, it seems strange to me that both appliances don't work. Could it be the outlets rather than the appliances? Is there some sort of shut off -- breaker or electrical switch that could be shut off?

Do the outlets work for something else, like a lamp? Is there some sort of on/off switch in the appliances that you may have forgotten to turn on or a thermostat that you need to turn up (or down, depending on your point of view). For example, in my fridge there is a temp control from 0 to 9; if it is set at 0, the fridge doesn't actually cool down. Explore some of these possibilities, and if nothing works, I'd phone a repairperson.