TIMER CONSTRUCTION The defrost timer is operated by a single-phase synchronous motor like those … Close the Refrigerator door(s). In older models, the timer runs continuously and roughly every six hours, cuts power to the cooling system and sends power to the defrost heater. Note: Forced Defrost mode can be exited at any time prior to step 7 by closing the Refrigerator Door(s). Timer is mounted to the left of the centered ballast box. A mechanical defrost timer controls the defrost cycle of the freezer. Its function is to turn the compressor off, Defrost Time, for a period of time during the day or night so the product in the machine can melt down to a liquid state. 8. This defrost timer observes the coolness in your Whirlpool's refrigerator to prevent ice accumulation. Whirlpool defrost timers only! How to set and troubleshoot the Defrost Timer on Whirlpool Refrigerator Many Whirlpool refrigerator provide an electronic adaptive defrost control panel. Two Door Models: Defrost timer is located in the middle of the cabinet, behind the louvered grill. When I was a little unsure about hooking those defrost timers up, where the timer motor wire went , #1 terminal or # 2 terminal. Jake Whirlpool tech line gave me an easy way out: If the timer has a WHITE wire going to it ,the timer lead goes on #1 Anything else goes on #2 Single Door Models: Defrost timer is located in the lower right corner behind the louvered grill. The timer in a Slush Puppie Machine is very similar to a timer used to turn lights on or off in your home. How To Test the Defrost Timer. You are in the defrost mode. If the UET is in the defrost cycle when power is interrupted, the defrost cycle will start at the beginning when power is restored. Locating The Defrost Timer: Take off lower grill assembly by removing four (4) corner screws. The defrost cycle will continue for the time set on the “UET will remember its position in the compressor cycle for at least 4 hours without power. The defrost heater is permitted to operate for some length of time before the timer disconnects it from the circuit and permits the compressor to operate again. The defrost will begin immediately and the display will return to a normal operating display with set point values.