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Blog Title: What are thermocouples in a furnace?
What are thermocouples in a furnace?
Category: Wall Air Condition Units Post By: Query byMinni Rogers (Raleigh, NC), 06/23/2016

These are parts of the furnace that sense the flame. They look like a pair of metals. With long and incessant use they can become decalibrated or inhomogeneous which can impact the outcome of the process. This happens when the wires of the thermocouple become chemically attacked that change the wire composition, mechanical properties of the material. Asa result they cannot read temperatures properly. The best way to detect a defective thermocouple is to keep a new one beside it. You will notice a difference in temperature reading which will tell that the old one is better replaced.

- Harris Nison (Raleigh, NC), 07/01/2016
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