Dryer lights blinking

I have a frigidaire affinity dryer, model AGQ6000ES.
when we try to start any cycle the 3 lights above the start button start blinking.
we read one of the posts on this forum which mentions to the following to get an error code.
[LEFT][COLOR=#000000]Try to recall the error codes by doing that:[/COLOR][/LEFT]

[LEFT][COLOR=#000000]1. Press and hold the Select and Cancel buttons simultaneously for 6 seconds to reset control. The buzzer will sound 1 time and “rES” will be shown briefly in the display.[/COLOR]
[COLOR=#000000]2. Immediately after, rotate cycle selector knob 2 turns counter-clockwise to the third position from the top, and then press and hold the Select and Cancel[/COLOR]
[COLOR=#000000]buttons simultaneously for 6 seconds. The control will enter Field Test Mode, the buzzer will sound 3 times, and the digital display will alternate between “Fld” and the firmware revision number (ex. “r03”).[/COLOR]
[COLOR=#000000]3. Rotate the cycle selector knob 2 turns counterclockwise. The error code will appear in the digit display.[/COLOR][/LEFT]

[LEFT][COLOR=#000000]when we press the select and cancel button we do not get the rES or the error code.[/COLOR]
[COLOR=#000000]please help[/COLOR]
[COLOR=#000000]thanks[/COLOR][/LEFT]

I think your child lock is on by mistake check push and hold those buttons until it comes off then you should be ok let me know

Hello thanks for reply,
I don’t think my dryer has a child lock
the dryer is frigidaire affinity dryer, model AGQ6000ES.
when i press start some times the three lights come immediately, sometimes it starts tumbling but then stops and the lights come on.
please help