METHOD AND APPARATUS FOR IDENTIFYING ERRONEOUS DISCHARGE AIR TEMPERATURE (DAT) SENSOR INSTALLATION

• Main Authors: DELGOSHAEI PAYAM, OERNBO LARS NOERGAARD, VENKATESH SRIDHAR, KOWALD GLENN W
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2019
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

The invention discloses a method and apparatus for identifying erroneous discharge air temperature (DAT) sensor installation. A method of monitoring an HVAC system to detect erroneous sensor installation. The method includes determining whether a circulation fan has been operational for a first predetermined time interval. If the circulation fan has been operational for the first predetermined time interval, determining whether a cooling demand is present. If the cooling demand is present, determining whether the HVAC system has been conditioning air for the first predetermined time interval responsive to the cooling demand. If the HVAC system has been conditioning the air for the first predetermined time interval, determining whether a difference between an indoor air temperature value corresponding to an enclosed space and an air temperature value from a discharge air temperature (DAT) sensor is greater than a predetermined temperature value. If the difference is not greater than thepredetermined temperatur