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:
Aug. 15, 1995
Filed:
Jan. 24, 1994
Vijay Bahel, Sidney, OH (US);
Hank Millet, Piqua, OH (US);
Mickey Hickey, Sidney, OH (US);
Hung Pham, Dayton, OH (US);
Gregory P Herroon, Piqua, OH (US);
Wayne R Warner, Piqua, OH (US);
Jean-Luc M Caillat, Dayton, OH (US);
Copeland Corporation, Sidney, OH (US);
Abstract
The microprocessor-based HVAC control system detects sensor faults by comparing thermistor readings with predetermined extreme values, indicative of sensor fault. The system automatically selects the appropriate combination of automatic/preset modes of operating key system components such as the expansion valve, the demand defrost system and the indoor fan speed control system. With a view towards minimizing any negative impact on system performance and reliability in the event of sensor malfunction.