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System and method for HVAC health monitoring using a television receiver

  • US 9,996,066 B2
  • Filed: 11/25/2015
  • Issued: 06/12/2018
  • Est. Priority Date: 11/25/2015
  • Status: Active Grant
First Claim
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1. A method comprising:

  • determining, at a television receiver of a home automation system, a predetermined temperature delta threshold value and a predetermined airflow threshold value for a Heating, Ventilation, and Air Conditioning (HVAC) system;

    storing, by the television receiver, the predetermined temperature delta threshold value and the predetermined airflow threshold value in a home automation settings database;

    receiving, at the television receiver, a signal from the HVAC system indicating that the HVAC system is actively running;

    receiving, at the television receiver while the HVAC system is actively running, a temperature value from a temperature sensor located at a vent grate of the HVAC system, the temperature value indicating a temperature of the air emitting from the HVAC system;

    receiving, at the television receiver while the HVAC system is currently running, an airflow value from a pressure sensor located at the vent grate of the HVAC system, the airflow value determined by a pressure of the air emitting from the HVAC system;

    calculating, at the television receiver, a temperature delta value based on the temperature value and an ambient temperature value;

    comparing, at the television receiver, the temperature delta value with the predetermined temperature delta threshold value;

    comparing, at the television receiver, the airflow value with the predetermined airflow threshold value;

    identifying, by the television receiver, an error with the HVAC system, the identifying the error comprising;

    determining, by the television receiver, that the airflow value is an acceptable value based on comparing the airflow value to the predetermined airflow threshold value,determining, by the television receiver, that the temperature delta value is below the predetermined temperature delta threshold value, wherein the predetermined temperature delta threshold value indicates a pilot light failure, andidentifying, by the television receiver, that the error with the HVAC system is a pilot light failure based on the determining that the airflow value is an acceptable value and determining that the temperature delta value is below the predetermined temperature delta threshold value; and

    sending, by the television receiver, a notification of the error to a device of a user alerting the user that the error with the HVAC system is a pilot light failure and instructing the user to relight the pilot light.

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