The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2025
Filed:
Dec. 07, 2023
Lennox Industries Inc., Richardson, TX (US);
Rakesh Goel, Irving, TX (US);
Siddarth Rajan, Addison, TX (US);
Lennox Industries Inc., Richardson, TX (US);
Abstract
A method of operating an HVAC system includes receiving a first loss of charge parameter of refrigerant from a loss of charge sensor. The method includes determining that refrigerant leak diagnostics should be performed for the HVAC system based on a comparison of the first loss of charge parameter to a loss of charge threshold. The method includes turning off a compressor in a control panel unit and a blower in an indoor unit for a predetermined wait time. The method includes receiving a measurement after the predetermined wait time that is indicative of a concentration of the refrigerant in the indoor unit from a first leak detection sensor, and receiving a measurement that is indicative of a concentration of the refrigerant in the control panel unit from a second leak detection sensor. The method includes determining a leak location of the refrigerant using a controller.