System and method of fault detection in a warm air furnace
US7123020B2 · kind B2 · utility
42Cited by
16References
45Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 28, 2004 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Apr 6, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H15/242
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.