Furnace making clicking sound when off

4 years ago

Hi,

I couldn’t find this anywhere else. I was in my garage doing errands and I heard this ticking sound from my furnace. Wouldn’t have noticed it otherwise. It took me a while to figure out that it is probably the pilot light trying to light? I haven’t touched my thermostat or furnace in over a year. I tested the thermostat by turning on the heat and that ticking noise which was at 10 second intervals turns into a rapid fire ticking. I think it’s probably time to replace it since it’s over 20 years old. But how come it’s making that ticking noise when it’s not even on or been used in over a year? Any help? Thanks.

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Comments (2)

Andrew
4 years ago
Isnt the pilot light always lit? is it gas? sounds like its going through the sequence of operations. Maybe its your gas valve opening to try to light. You will usially hear a click when this happens. Probably a bad thermocouple. Light the pilot and see what hapoens. if you dont use it just kill the power. If unsure, call a professional.
Chris
Original Author
4 years ago
Ok thanks I do have someone coming to look at it soon. Sorry not sure what it’s called. I think it’s the electric spark igniter that’s making the click I can see a small electric spark with the click. Is that trying to light something? Even when the furnace is off and hasn’t been used why does it keep sparking?
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