Service Manual:
https://t2m.io/31-9136

To program the replacement control board:
Reconnect power to the dryer. (The display will
now show "---", which means no model has
been selected.)
Rotate the cycle knob until the correct model
number is displayed.
Press and hold the Start/Pause key for 3
seconds. (The control will beep, indicating the
new model number has been successfully
programmed.)
Press the Power button to return to the test
selection mode.
Note: If an error is made in programming the
control, enter test mode and select T01. Then repeat
steps 1 thru 3.