Years ago I went through this and ended up getting an aftermarket control board...
Solved all the flame out related issues and actually have a way of adjusting the temperature on the board.
http://www.dinosaurelectronics.com/Dom_boards.htmNote the retry for flame out...
Spec:
*Built in Ignitor.
*2-way or 3-way operation.
*Fuse protected.
*Variable Temperature adjustment for those FIXED TEMP refrigerators.
*The CHECK light comes on after each ignition try fails to sense a flame.
*Repeats the 3 try ignition cycle at 30 minute intervals if no flame is sensed.
** In 3-way models, the DC element will drop out and the DC mode light will flash, if the voltage level falls too low? for more than 10 seconds.
*Easy to remove cover included
Jim