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Ordered record of system-wide fault in an HVAC system

  • US 7,308,384 B2
  • Filed: 05/10/2004
  • Issued: 12/11/2007
  • Est. Priority Date: 01/20/2004
  • Status: Active Grant
First Claim
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1. A method of diagnosing a HVAC system comprising the steps of:

  • (1) monitoring an HVAC component of an HVAC system;

    (2) identifying a fault at a location of the HVAC component with a microprocessor located at the location of the HVAC component, wherein the microprocessor identifies the fault;

    (3) communicating a fault signal representative of the fault to a central controller after said step (2); and

    (4) maintaining an ordered fault list comprising the fault signal at the central controller.

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