Method and apparatus for using single-stage thermostat to control two-stage cooling system

A method for selectively providing a low cooling mode and a high cooling mode of a cooling cycle in an air conditioning unit as a function of a previous cooling cycle, comprising the steps of:

• storing the duration of a previous cooling cycle;
• determining the existence of a cooling load to be satisfied;
• recalling the stored duration of the previous cooling cycle;
• providing a low cooling mode for a selected first time period dependent upon the time duration of the previous cooling cycle and the determination of the existing cooling load to be satisfied;
• and
• terminating the low cooling mode if the cooling load is satisfied during the selected first time period.

An adaptive control system for providing a low cooling mode and a high cooling mode of a cooling cycle in an air conditioning unit as a function of a previous cooling cycle, comprising:

• means for storing a previous duration of operation of a low cooling mode and a previous duration of operation of a high cooling mode of a previous cooling cycle;
• means for determining the existence of a cooling load to be satisfied;
• means for recalling the stored duration of the previous low cooling mode;
• means for providing a low cooling mode for a selected first time period dependent upon the stored duration of the previous low cooling mode;
• and
• means for terminating the low cooling mode if the cooling load is satisfied during the selected first time period.

An adaptive control system for providing a low cooling mode and a high cooling mode of a cooling cycle in a furnace as a function of a previous cooling cycle, comprising:

• means for storing the duration of a previous cooling cycle;
• means for determining the existence of a cooling load to be satisfied;
• means for recalling the stored duration of the previous cooling cycle;
• means for providing a low cooling mode for a selected first time period dependent upon the duration of the previous cooling cycle and the determination of the existing cooling load to be satisfied;
• and
• means for terminating the low cooling mode if the cooling load is satisfied during the selected first time period.

A method for providing a low cooling mode and a high cooling mode of a cooling cycle in a current cycle of an air conditioner unit as a function of the previous cooling cycle wherein the current cooling cycle is a function exclusively of time run in the low cooling mode and time run in the high cooling mode of said previous cooling cycle, comprising the steps of:

• determining an existence of a cooling load to be satisfied;
• running the unit in said low cooling mode for a first time interval that does not exceed a predetermined limit;
• running the unit in said high cooling mode for a second time interval until the cooling load is satisfied;
• calculating a cooling load requirement as a function of said first time interval and said second time interval;
• and
• predetermining the low cooling mode time limit for a next cycle from the calculated cooling load requirement.