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Article: Furnace controller phobia: understanding flame detection systems can help.
- Article from:
- Air Conditioning, Heating & Refrigeration News
- Article date:
- May 5, 2003
- Author:
CopyrightCOPYRIGHT 2003 BNP Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Let's talk about the furnace controllers that have shown up on 80 percent- and 90 percent-AFUE furnaces in the last 10 years or so. These are the mysterious boxes with all the wires emanating from them that control the entire furnace. I don't know about you, but when I saw one of these magic boxes for the first time, my stomach turned.
I have an innate fear of electronics. I don't feel too bad, though, because I'm in good company.
The furnace manufacturers are well aware of the fear that these magic boxes instill in the technician at large. Most of the controllers they get back under warranty are still good.
Many techs are so intimidated by ...