Quote:
Originally Posted by Dude Guadalupe
The whosawhatsit now? lol
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The thermocouple senses if the pilot is hot enough to burn the gas. If all's good it keeps the main gas valve in the pilot open. If the thermocouple fails it basically just reads the pilot as out and won't open the gas valve. Probably the single most common furnace failing and is quickly/cheaply (under $10.00) fixed.