A refrigerator’s defrost timer is an electromechanical device that controls the cooling and heating cycles that affect the evaporator coils. Under most circumstances it is unnecessary to run a defrost cycle as often as a mechanical timer; therefore, mechanical timers are inefficient, which brings me to adaptive defrost controls. Repair help > Refrigerator repair > Refrigerator symptoms. Many modern refrigerators automatically control how often the defrost cycle takes place. Before testing the defrost timer, unplug the refrigerator to avoid an electrical shock hazard. However, if your refrigerator is having any of these symptoms, then replacing the defrost timer could solve your refrigerator problems. Clean the condensor coils. If the refrigerator temperature control is not working, then you may need to replace your thermostat or have a service technician pay a visit. If the gasket seems sound, a malfunction somewhere in the automatic defrost system could be the culprit. Adaptive defrost controls use an electronic control to determine when the refrigerator needs to run a defrost cycle. If the timer stops in run cycle, the refrigerator fails to automatically defrost, frost build up occurs on the evaporator, and air flow is restricted. If you notice these as symptoms of your problem, then it is highly possible that your refrigerator timer needs to be reset. Most defrost timers will run a defrost cycle every 6, 8 or 10 hours for 30 minutes. Alternatively, you could trip the appropriate switch in the circuit breaker panel, or you could remove the appropriate fuse from your home's fuse box.

The defrost timer is usually found behind the front grill "toe kick" of the refrigerator. Refrigerator or freezer is not cold enough : Check the temperature setting. How to Know When Your Refrigerator Is Broken. In order to determine this, the evaporator cover and coils at the back of the freezer must be checked. Assure that there is enough room for air flow in the refrigerator or freezer. Enter model number to search for the required part specific to your product. A defrosting timer is very common to make sure frost removal happens on time, every time, no matter if it is necessary. Before you begin to test your defrost timer, make sure you disconnect the appliance's power supply. The defrost timer is an electro-mechanical device that controls the intervals between automatic defrost cycles in the refrigerator. Defrost timers are used to shut off the refrigerator compressor and the evaporator fan motors. A defrost timer switches the refrigerator between the cooling and defrost mode. If the defrost timer is defective, it may not advanc ... Refrigerator Defrost Timer. As the refrigerator runs, ice builds up on the evaporator coils. This time, I used alligator clips to create a jumper between the thermostat's brown and magenta wires (to "close" the circuit). A broken defrost times prevents the refrigerator from cooling efficiently. It may also be found behind a cover plate inside the refrigerator or freezer, in the temperature control console, or behind the refrigerator near the compressor. Test the defrost timer. This affects the efficiency of the refrigerator. The defrost timer motor runs and moves the control components in the device. Or when it stops at the defrost mode it melts all the frost and does not go back to the cooling cycle. How to Know When Your Refrigerator Is Broken.

Directions for testing a refrigerator defrost timer. This ice prevents air from circulating around the coils and cooling them properly.

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. The defrost timer has four pins labeled from 1 to 4. If the timer stops during the defrost segment of the cycle, frozen food will be in danger of thawing out, and refrigerator components will cease to operate. Does it go into a defrost mode?

See Table 1 below for a troubleshooting guide for a Paragon UDT electronic defrost timer.

Buy 215846602 Defrost Timer Compatible with Frigi-daire Kenmore Refrigerator Replacement parts by Podoy Replaces 215846606 240371001 241621501: Refrigerator Parts & Accessories - Amazon.com FREE DELIVERY possible on eligible purchases If it goes bad and stops at cooling mode, it causes excessive frost to build up on the evaporator coils which reduces the air flow.