HVAC System Fault Root Cause Self-Determination
First Claim
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1. A method for self-determining a root cause of a system fault in a heating, ventilation, and cooling (HVAC) system, comprising:
- receiving a fault message indicative of a fault condition in an operating characteristic of the HVAC system;
determining a causal relationship between the fault condition and a predetermined list of root causes associated with the fault condition;
receiving information indicative of operating conditions of the HVAC system; and
eliminating at least one root cause that is unrelated to the fault condition in response to the receiving of the information.
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Abstract
A method for self-determining a root cause of a system fault in a heating, ventilation, and cooling (HVAC) system includes receiving a fault message indicative of a fault condition in an operating characteristic of the HVAC system; determining a causal relationship between the fault condition and a predetermined list of root causes associated with the fault condition; receiving information indicative of operating conditions of the HVAC system; and eliminating at least one root cause that is unrelated to the fault condition in response to the receiving of the information.
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Citations
44 Claims
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1. A method for self-determining a root cause of a system fault in a heating, ventilation, and cooling (HVAC) system, comprising:
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receiving a fault message indicative of a fault condition in an operating characteristic of the HVAC system; determining a causal relationship between the fault condition and a predetermined list of root causes associated with the fault condition; receiving information indicative of operating conditions of the HVAC system; and eliminating at least one root cause that is unrelated to the fault condition in response to the receiving of the information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for self-determining a root cause of a system fault in a heating, ventilation, and cooling (HVAC) system, comprising:
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receiving a first list associated with a plurality of fault conditions in the HVAC system; identifying a second list of root causes associated with a particular fault condition of the plurality of fault conditions; receiving information indicative of operating conditions of the HVAC system; and eliminating at least one root cause from the second list of root causes that is unrelated to the particular fault condition in response to the receiving of the information. - View Dependent Claims (17)
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18-30. -30. (canceled)
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31. A programmable control unit for self-determining a root cause in an HVAC system, comprising:
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a controller configured for receiving a fault message indicative of a fault condition in an operating characteristic of the HVAC system and for determining a causal relationship between the fault condition and a predetermined list of root causes associated with the fault condition; wherein the controller receives information indicative of operating conditions of the HVAC system; and wherein the controller eliminates at least one root cause in response to the receiving of the sensed information.
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32-42. -42. (canceled)
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43. An environmental control system for an HVAC system, comprising:
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a programmable control unit configured for establishing user desired environmental control parameters for one or more control zones; and at least one unit controller configured for storing information indicative of at least one system parameter for a control system, the at least one unit controller operatively coupled to the programmable control unit; wherein the programmable control unit or the unit controller is configured for receiving a fault message indicative of a fault condition in an operating characteristic of the HVAC system, for determining a causal relationship between the fault condition and a predetermined list of root causes associated with the fault condition, for receiving information indicative of operating conditions of the HVAC system, and for eliminating at least one root cause in response to the receiving of the sensed information.
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44-55. -55. (canceled)
Specification