Self diagnosing HVAC zone configuration
First Claim
1. A diagnostic apparatus for determining the location of a fault in a comfort system having power selectively delivered to individual devices among a plurality of devices, comprising:
- a current protective device connected in parallel between a power source and the plurality of devices, said protective device being adapted to trip when a current level therethrough exceeds a predetermined level;
a control device connected to both said protective device and to the plurality of devices for selectively directing power from said protective device to operate at least one of said plurality of devices at a time;
means for sensing, when said protective device is tripped, which of said at least one device was operating at that time; and
means for providing an indication thereof for purposes of diagnostics and repair.
1 Assignment
0 Petitions
Accused Products
Abstract
In a drive circuit in which a plurality of drive motors are connected to a power source through a protective device which trips when the flow of current is excessive, provision is made to detect which circuit or circuits were active at the time of the failure. A microprocessor is provided to both control the activation of each of the various circuits and to also sense which circuits were active at the time of the failure. Appropriate signals are sent from the microprocessor to a user interface so that proper diagnostic and repair action can be taken.
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Citations
14 Claims
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1. A diagnostic apparatus for determining the location of a fault in a comfort system having power selectively delivered to individual devices among a plurality of devices, comprising:
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a current protective device connected in parallel between a power source and the plurality of devices, said protective device being adapted to trip when a current level therethrough exceeds a predetermined level;
a control device connected to both said protective device and to the plurality of devices for selectively directing power from said protective device to operate at least one of said plurality of devices at a time;
means for sensing, when said protective device is tripped, which of said at least one device was operating at that time; and
means for providing an indication thereof for purposes of diagnostics and repair. - View Dependent Claims (2, 3, 4, 5)
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6. A method of diagnosing faults in a comfort system having power deliverable to a plurality of devices in individual circuits, comprising the steps of:
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installing a current protective device in parallel between a power source and the plurality of devices, said protective device being adapted to trip when a current level therethrough reaches a predetermined level;
providing a control for selectively switching power from said protective device to operate at least one individual device among the plurality of devices;
when said protective device trips, sensing which of said at least one device was operating at that time; and
providing an indication thereof for purposes of diagnostics and repair. - View Dependent Claims (7, 8, 9)
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10. A diagnostic apparatus for determining the location of a fault in a comfort system having power selectively delivered to individual devices among a plurality of devices, comprising:
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a current protective device connected in parallel between a power source and the plurality of devices, said protective device being adapted to trip when a current level therethrough exceeds a predetermined level;
a control device connected to both said protective device and to the plurality of devices for selectively directing power from said protective device to operate at least one of said plurality of devices at a time; and
a sensor which, when said protective device is tripped, determines which of said at least one device was operating at that time. - View Dependent Claims (11, 12, 13, 14)
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Specification