Stormin brought up a good point--on most refrigerators with a fan forced
condenser under the unit, the cover must be on to get proper air
circulation. On most, the fan draws air over the condenser coil, and
then blows it out over the compressor (even though the air is warmer
than room temp, after going through the condenser, it will still help
keep the compressor cooler. There are some units that this does not
apply to, but it does to most. Put the cover on and try it.
Larry