Control-Defrost,adaptive Timer ,pc Board

Travis L for Model Number FRT21H7ASB0

Answer Travis, To initiate a defrost cycle " NOTE: This product comes equipped with an Electronic Defrost Control. To initiate defrost, depress the fresh food light switch 5 times in 6 seconds (light bulb must be working). To terminate defrost, depress the fresh food light switch 5 times in 6 seconds." And here's how to access and replace the ADC Board 240545401,
 " 1. Disconnect electrical supply to refrigerator. 2. Remove four screws securing housing to top of refrigerator compartmnt. 3.Unplug molex connector coming from top of cabinet. 4. Unplug connector to defrost control. It may be very snug. Use pliers to pull it loose from control. 5. Remove two screws securing control to control housing. 6. Reverse procedure to complete repairs". Good Luck and Thanks 

Tai for Model Number frt21h7asb0

Answer Hello Tai. No, 240545401 controls the defrost cycle. It sounds like the drain is stopped up on the unit. Here is a link to our Repair Forum, this is a free service to our customers. Use this link to access the repair for your question. Hope this helps. http://forum.appliancepartspros.com/refrigerator-freezer-repair/173916-kenmore-top-mount-refrig-h2o-build-up.html