Randel S Plymouth , MA January 10, 2017 Appliance: Frigidaire Frigidaire/Electric Dryer CRER7900AS1 Frigidaire Dryer Crer7900as1: Moisture controler stop working. How to replace Control-Control,Moisture Snsr. Bought frigidaire crown dryer (2001) to fix this is unplug dryer (240v) mover out on the head unscrew the timer plate on the left side of timer you will fined the moisture controler unplug the conductor cord (white) and plug in new controler remove old and replace with new put plate back on timer head . 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes