Beeping Kenmore Elite (Model 110.67032600)
The issues I had with our Kenmore Elite, i.e., sporadic codes AF, oF, on, beeping at random, etc., were solved by taking the top control module housing off, removing the control circuit board from the housing, and carefully wicking WD-40 onto each of the microswitches. It seems that either moisture or static electricity cause the switch(es) to activate at random. It was driving us crazy. A very small portion of WD-40 turned the trick - no more beeping, and all the controls work as designed.
Here are the steps I followed: 1) Remove the three long screws in back that anchor the control module housing to the top of the dryer; 2) Carefully slide the control module housing slightly forward (toward the dryer door) to release the two plastic hooks on either side-bottom of the module housing - these hooks insert into the top of the dryer - just slide forward to release; 3a) Remove three short screws from the circuit board cover located inside the module housing - this is a plastic cover that goes over the circuit board in back; 3b) There are two plastic tabs on the bottom of the cover - gently pry each tab (use a small screw driver) to remove the cover; 4a) The back of the circuit board is now exposed - before doing anything else, pull the front rotary selector knob off (on the face of the module housing) - it is like a radio knob - with a slight pull it will come off; 4b) Back to the circuit board: There is a plastic tab on the back of the rotary selector - press down and rotate this rotary module counter-clockwise - this will loosen the rotary selector module from the front of the panel - careful not to disturb the wiring here, because the ribbon cable of the selector module is soldered directly onto the board - the rotary module needs to be loosened, because if not it will stop the removal of the circuit board; 5) There are three tabs at the bottom of the circuit board - a small screw driver gently inserted / prying one at time will release the bottom of the circuit board from the control module housing; 6) Gently slip the circuit board downward and away from the control module housing - there is a connector on the right of the circuit board - carefully pull this off to free the circuit board (take it easy on the circuit board - it is very delicate); 7) On the front of the circuit board are the cylindrical microswitches - one or more of these are causing the beeping. Here's how to wick WD-40 onto each switch: Get a small plastic bag (or a small container like a soda cap) - spray WD-40 into the bag so there is small amount to wet a pointed toothpick. Carefully wick each microswitch with WD-40 from the toothpick. Not too much is required, just ensure that each rim of each switch is very slightly prepared with WD-40. Use a Kleenex to dab any residue from each switch. Put everything back together by going backward from step 6.
Voila! The sporadic / random beeping and errant error codes are gone. It works like a new dryer.
Hope the above fix helps. (BTW, under the control module housing is a technician service manual / sheet, conveniently placed there at the factory - it can be used as a physical reference for the above procedure). Good luck.