Your condenser fan motor is not operating. This could be because there is something blocking the fan blades from moving (just remove it), or the motor is broken (replace it) or it isn't getting power (not common, but check for broken wires). The condenser fan motor is the down by compressor and keeps the compressor cool and blows off the heat from the condenser coils. When it isn't working, you will feel heat where it doesn't belong on the cabinet, and your machine will not be working efficiently and you may experience poor cooling.