KitchenAid KSRA22FK Adaptive Defrost Control, Pulsed Defrost, Evaporator Fan Delay, Max Cool

Adaptive Defrost Control

The Adaptive Defrost Control allows the unit to enter a defrost mode only when it is needed. When powered up for the first time, the control will initiate a defrost cycle after 8 hours of compressor run time. By monitoring the duration of defrost heating time and compressor run time, the control will continuously adapt the time between defrosts to optimize efficiency. Time between defrost periods will vary from 8 to 100 hours.

Pulsed Defrost

For the first 5 minutes of defrost, the heater is on continuously. It then cycles off for 1 minute and back on for 2 minutes. It continues to cycle at this ratio until the bi-metal opens or 25 minutes have elapsed. At this point heat is discontinued, and a 3-minute “drip time” begins. This allows the water to drain before the refrigerator returns to the cooling mode. Maximum defrost time (heat time plus drip time) is 28 minutes.

Evaporator Fan Delay

The evaporator fan motor will start 40 seconds after the compressor is energized and continue for 2 minutes when it cycles off.

After defrost, fan delay prevents unnecessary movement of warm moist air through the refrigerator by chilling the evaporator prior to starting the fan. Immediately after the defrost drip time the compressor starts, but the evaporator fan is delayed by 4 minutes 15 seconds. The baffle will be closed during defrost and remain closed for 10 minutes after defrost.

Over Temperature Alarm

The Over Temperature Alarm sounds and the indicator light flashes when either the refrigerator temperature exceeds 48°F (9°C) or the freezer temperature exceeds 15°F (-9°C) for over 1.5 hours. The Alarm stops if the temperature(s) return to normal, but the indicator continues to flash. Pushing the Over Temperature Reset button turns off the Alarm and/or Indicator.

NOTE: When the refrigerator is first started, it may take longer than 1.5 hours to reach the customer selected settings. It is normal for the Over Temperature Alarm to sound/flash.

Water Filter Indicator

The Water Filter Indicator displays the condition of the filter. Both dispenser usage and time elapsed are monitored to determine the filter’s status. A green light indicates a good filter, yellow means order a replacement filter and red means replace the filter. To reset the counter, press and hold the reset button for two seconds.

LED color	Description	Gallons	Time (days)
Green	Good Filter	0-449	0-327
Yellow	Order Filter	450-499	328-364
Red	Change Filter	500+	365+

Max Cool

When selected, Max Cool changes the refrigerator setting to 34°F (1°C) and the freezer to –10°F (-23°C) for 24 hours. The control will return to the previous user setting after 24 hours or at any time the customer changes the settings.

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