California 19410 Business Ctr Dr. Northridge, CA 91324 1-877-477-7278 Tennessee 240 Edwards St. S. E. Cleveland, TN 37311 1-877-477-7278 It should be located on the fridge's control panel found on the back of the fridge or the lower kickplate. Pull it out far enough so that you can disconnect its wires. Turn the stem with the screwdriver until it clicks so the defrost cycle begins. If you notice the signs of a malfunctioning timer, then it may be time to reset your defrost timer. The timer is commonly behind the front grill “toe-kick” at the bottom but can be elsewhere depending on the model. You may need to rock them back and forth a little to ease the motion. Here you will find the instructions needed to test and replace the component. It does have a main board which is located in the rear of the unit. A defrost timer is usually secured inside a refrigerator with at least one screw, but sometimes more. This affects the efficiency of the refrigerator. The compressor should turn off and the heater should turn on. The defrost timer tells the refrigerator thermostat when to turn off the cooling, usually about every six to eight hours, so that the defroster can run. To determine if the defrost timer is defective, slowly advance the dial into the defrost cycle. Seen that before. If the defrost timer is not advancing, replace it. If the timer does not send power to the defrost components or advance out of the defrost cycle within 30 minutes, this indicates that the defrost timer is not advancing. You should always test your refrigerator defrost timer before resetting it, simply because this is the only way to make sure that the timer is the issue. DA41-00295D is the part number but if your unit is at least a year old or younger, call an authorized Samsung service provider. If it fails to make the switch-over from defrost to cooling or back again, test the defrost timer first. Pull firmly on the wire's connectors to remove them. If the refrigerator is not cooling, the timer may be stuck or broken and needs replacement. Step 2 - Do a Simple Test. Find here online price details of companies selling Defrost timers. It might be the defrost timer. The Samsung RF18 is a high tech unit that uses a micro processor to control the defrost cycles. Get info of suppliers, manufacturers, exporters, traders of Defrost timers for buying in India. Mark the position of the timer’s stem with a pencil. The refrigerator and freezer sections have separate evaporators and are controlled independently. The defrost cycle is not a function of time like the old school refrigerator. Remove all the screws you find and pull the timer carefully out of the refrigerator. Your unit does not have a defrost timer like the old american made fridges.