Refrigerant system filter/dryer.

The start relay boosts the compressor, and then shuts off as soon as the motor gets up to speed and the overload provides extra protection against excessive temperatures.

This is the mechanics (motor/engine) of the cooling system. It kicks in whenever the thermostat demands cooling. ***NOTE: This part needs to be installed by a trained professional in appliance repair. It requires special tools and knowledge to do so.

This part provides extra protection for the compressor motor.

The start relay boosts the compressor, and then shuts off as soon as the motor gets up to speed and the overload provides extra protection against excessive temperatures.