How to Troubleshoot & Replace Whirlpool AP6011114 / WP74009254 Fan Control Switch

Replaced switch with a like component. 

Be careful not to tighten or twist the small hex nut in the knob cylinder/housing with force. there is a very small plastic set tab that can be broken off easily. how do I know? The orientation of the switch "box" is horizontal instead of vertical. otherwise, this replacement part # works as expected. I couldn't get the switch to attach plate removed, and the switch removed, without removing the entire cooktop and removing the top glass burner cover. Not difficult, but time-consuming. 

Took out stove top, took off glass top, replaced switch. Easy job 

Removed the old switch and ordered a new one from AppliancePartsPros.com. I chatted with a representative who found the replacement in less than 5 minutes. My thermador parts are no longer in production so it is a little harder to find manufacturer's fro replacement parts. You made the process quick, painless and the part arrived in two days! Very, very good service!!!! 

To replace the switch you have to disconnect all the wiring and take out the cooktop. Open up the bottom support case to take the switch out. The switch cannot be taken out from the top. It was much harder than I thought. Put the new switch in and the fan was working again. 

Replaced the bearings and seals. Except for pounding the axle out of the drum, it went quite well. I had to soak the axle/bearing in rust remover over night. 

Replaced fan switch.