MY UPRIGHT FRIGIDAIRE FROST FREE COMMERCIAL FREEZER WILL FREEZE FOOD. BUT SEVERAL HOURS LATER THE OUTSIDE PANELS WILL GET HOT, THE ALARM SOUNDS AND THE FREEZER STOPS COOLING. IF I WAIT A FEW HOURS, I CAN PLUG IT BACK IN THE WALL AND IT WILL START WORKING-THE CYCLE THEN REPEATS. I HAD TO REPLACE THE SMALL FAN INSIDE BECAUSE IT WOULD GET STUCK. BUT THE PROBLEM STILL CONTINUES.
Thank You,

MIKEV, July 2007

Try defrosting it...... an ice build up in the evaporator will stop airflow for efficient cooling.

Pete., July 2007