Tempstar furnace clicking, igniting and then shutting off

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Dec 22, 2018
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This problem started today, the motor comes on, about 20 seconds later I can hear a clicking and the sparks rattling away, it seems to ignite a pilot flame which burns for a 2 seconds and then it shuts off. And then the cycle repeats itself.

It's a Tempstar model NUGE075BG01. Attaching a link to the video showing exact issue. It's just stuck in this loop for hours before I realized it.

What's the likely issue here? (I'm very handy but have limited experience with furnaces). I also can't seem to figure out if this model has a flame sensor or a thermocouple.

 

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