HVAC system prognostics and diagnostics based on temperature rise or drop
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 8, 2022
Grant Date -
Dec 23, 2021
app pub date -
Jun 22, 2020
filing date -
Jun 22, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
An HVAC system includes a heating element, a discharge air temperature sensor, and a return air temperature sensor. A controller of the HVAC system determines that the HVAC system has been operating in the heating mode for at least a predefined amount of time. The controller receives measurements of the discharge air temperature and the return air temperature. A temperature rise value is determined using the discharge air temperature and return air temperature. If the temperature rise value is less than a predefined minimum threshold value, the controller determines that a first fault of the HVAC system is detected and provides a corresponding alert. If the temperature rise value is greater than a predefined maximum threshold value, the controller determines that a second fault of the HVAC system is detected and provides a corresponding alert.
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