OK Erine you frig. on Elec. uses 12 volt and 120 volt. Do you have a test meter? There should be a 120 volt plug in the frig. area outside when the outside door is off. Plug a lamp into the plug if you don't have a meter, do you have power at the plug? If not could be a breaker tripped or a tripped gfi. (usually at an inside plug). If you have 120 it could be the heating element is bad. Next to the chimney for the frig. just above the gas flame area you should see two wires if you have a meter you can runs continuity check on these wires to make sure the heating element is not burned out.
Then with a test light or meter check for 12 volt at the rear of the frig.