How do I know if furnace thermocouple is bad?
My heat went out last year, and the HVAC company came and replaced the
thermocouple. It was cracked.
I noticed this morning that the furnace wasn't working. I don't get
that "click" when I raise the thermostat.
I checked the thermocouple. There's no obvious visible problem.
What else can I check? I really don't want to pay for a service call.
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