The led flash once and pause!!

Locate the service legend that describes the activity of the LED. Usually found inside the blower access panel or on the circuit board. P.S. Don't start a new thread with each response, just answer this question again. That keeps the thread history together.

How I do that?

Just click on "answer this question".

I fix today ,was hard to find the problem but I went every single sensor and wires. thank you