System and method of fault detection in a warm air furnace

Details System and method of fault detection in a warm air furnace System and method of fault detection in a warm air furnace

2006-10-17

2006-10-17

Lee, Diane (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

C126S11600A, C431S078000

Reexamination Certificate

active

07123020

ABSTRACT:
A fault detection system and method for a warm air furnace is provided. A sensing circuit connected to an AC power source measures a level of current consumption during several points in the warm air furnace operating sequence. The measured level of current consumption is compared with an expected value. If the measured level exceeds the expected level by a threshold amount, a fault in the warm air furnace may be detected. An indication of at least one warm air furnace component that is most likely to have caused the fault may be provided.

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