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