System and method for defrost of an HVAC system
First Claim
1. A method of controlling a heating, ventilation, and air conditioning (HVAC) system, comprising:
- executing a field defrost algorithm;
monitoring whether a condition meets a criteria, wherein the condition meeting the criteria comprises an ambient zone temperature being determined to be within a predetermined range;
executing a certification defrost algorithm in parallel with the field defrost algorithm in response to the condition meeting the criteria;
performing a certification defrost cycle if demanded by the certification defrost algorithm;
performing a field defrost cycle if demanded by the field defrost algorithm; and
exiting the certification defrost algorithm in response to the field defrost algorithm demanding a field defrost cycle while the ambient zone temperature is determined to be outside the predetermined range;
wherein the predetermined range comprises (1) a low temperature in a range of about 30 degrees Fahrenheit to about 34 degrees Fahrenheit and (2) a high temperature in a range of about 34 degrees Fahrenheit to about 40 degrees Fahrenheit.
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Abstract
A system and a method are provided for monitoring a condition and selectively executing a certification defrost algorithm for a heating, ventilation, and air conditioning (HVAC) system in response to the status of the monitored condition. A system and a method are provided for selectively operating a certification defrost algorithm in parallel to a field defrost algorithm. A system and a method are also provided for causing a controller to execute a first algorithm and for causing the controller to selectively execute a second algorithm while also executing the first algorithm where each of the first algorithm and the second algorithm are configured to selectively cause the HVAC system to operate in a defrost mode.
97 Citations
19 Claims
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1. A method of controlling a heating, ventilation, and air conditioning (HVAC) system, comprising:
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executing a field defrost algorithm; monitoring whether a condition meets a criteria, wherein the condition meeting the criteria comprises an ambient zone temperature being determined to be within a predetermined range; executing a certification defrost algorithm in parallel with the field defrost algorithm in response to the condition meeting the criteria; performing a certification defrost cycle if demanded by the certification defrost algorithm; performing a field defrost cycle if demanded by the field defrost algorithm; and exiting the certification defrost algorithm in response to the field defrost algorithm demanding a field defrost cycle while the ambient zone temperature is determined to be outside the predetermined range; wherein the predetermined range comprises (1) a low temperature in a range of about 30 degrees Fahrenheit to about 34 degrees Fahrenheit and (2) a high temperature in a range of about 34 degrees Fahrenheit to about 40 degrees Fahrenheit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of improving an efficiency rating of a heating, ventilation, and air conditioning (HVAC) system during certification comprising:
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executing a field defrost algorithm; and selectively executing a certification defrost algorithm in parallel with the field defrost algorithm; exiting the certification defrost algorithm in response to the field defrost algorithm demanding a field defrost cycle while an ambient zone temperature is determined to be outside a predetermined range; wherein the predetermined range comprises (1) a low temperature in a range of about 30 degrees Fahrenheit to about 34 degrees Fahrenheit and (2) a high temperature in a range of about 34 degrees Fahrenheit to about 40 degrees Fahrenheit. - View Dependent Claims (12, 13, 14, 15)
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16. A heating, ventilation, and air conditioning (HVAC) system, comprising:
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a controller configured to execute a first algorithm and the controller also being configured to selectively execute a second algorithm while also executing the first algorithm; wherein each of the first algorithm and the second algorithm are configured to selectively cause operation of the HVAC system in a defrost mode; and exiting the second algorithm in response to the first algorithm demanding operation in the defrost mode while an ambient zone temperature is determined to be outside a predetermined range; wherein the predetermined range comprises (1) a low temperature in a range of about 30 degrees Fahrenheit to about 34 degrees Fahrenheit and (2) a high temperature in a range of about 34 degrees Fahrenheit to about 40 degrees Fahrenheit. - View Dependent Claims (17, 18, 19)
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Specification