Bryant furnace model #394gaz036100aafa.
The problem is click click turns on then it makes click click noise and shuts down
Just wonder if I should replace my ignitor or flame sensor

If my memory serves me correctly,
That unit has a pilot assembly with a 3 wire connection, it heats a bimetal switch and also houses the spark ignitoe and grounding rod.


The click click sounds like not enough heat on the pilot bimetal sensor.

I would clean this assembly to get the best pilot flame and see if this corrects the problem.

This is a good starting point but please read through the FAQ section, for further instructions