Methods of controlling a cooling system based on pressure differences across a scroll compressor

A method comprising:

• determining a pressure difference across a scroll compressor of a cooling system;
• comparing the pressure difference to a minimum differential pressure value, wherein pressure differences across the scroll compressor that are less than the minimum differential pressure value are associated with undirected unloading the scroll compressor;
• decreasing a plurality of parameters including an evaporator fan decrease value, an evaporator fan minimum value, a compressor increase value, and a compressor maximum value when the pressure difference is less than the minimum differential pressure value;
• and
• subsequent to the decreasing of the plurality of parameters, increasing the plurality of parameters when the pressure difference is greater than a sum of the minimum differential pressure value and a hysteresis value.

A method comprising:

• determining a pressure difference across a scroll compressor of a cooling system;
• comparing the pressure difference to a first minimum differential pressure value, wherein pressure differences across the scroll compressor that are less than the first minimum differential pressure value are associated with undirected unloading the scroll compressor;
• starting a first method to increase a first plurality of parameters when the pressure difference is less than the first minimum differential pressure value;
• comparing the pressure difference to a second minimum differential pressure value, wherein pressure differences across the scroll compressor that are less than the second minimum differential pressure value are associated with unloading the scroll compressor;
• and
• starting a second method to decrease a second plurality of parameters when the pressure difference is less than the second minimum differential pressure value.