Maytag The defrost system problem in your refrigerator could be caused by a bad defrost bi-metal thermostat (part 10442411). Washer Parts 9 times out of 10 if the defrost heater won't come on in the diagnostics then its the bi-metal thats bad. KitchenAid However, if your refrigerator is having any of these symptoms, then replacing the defrost timer could solve your refrigerator problems. To determine whether the defrost timer is faulty, you would want to see if the evaporator coils are impacted with ice. The bottom of the freezer and fridge (side by side) would get a little cool, but it would also be frosty, and the top would be warm / hot. Or maybe it's going the other way around. Can I go without one for a few days? Your defrost heater is fine then. Ohm your defrost thermostat(bi-metal) for continuity while its still frosty to get a proper reading, should read 0-1 ohm. The defrost timer has four pins labeled from 1 to 4. When I put my timer in defrost mode, it advances to cooling mode in about 20 minutes, but then it gets stuck there. To access the timer you will need to pull the unit out from the wall and remove the compressor cover. To access the timer you will need to pull the unit out from the wall and remove the compressor cover. When the power supply is turned on, you should be able to measure the voltage on pin 2. If both check ok for continuity then the defrost timer would be the issue. To test if the defrost mode is working, apply voltage to pin 1. Once the timer advances past 30 minutes, the compressor and fan should turn on. Or when it stops at the defrost mode it melts all the frost and does not go back to the cooling cycle. You will know that the defrost timer is working if you measure voltage on pin 4 when the timer is not in defrost mode. Whatever the case, replacement is usually the simplest and most affordable option. The circuitry of a refrigerator defrost timer is surprisingly simple. Answered by AppliancePartsPros.com | Monday, August 22, 2016. You’ll also want to verify that the motor is working. ... A timer, a sink, and your attention. 1. 4) Frost builds up on the freezer coils. Defrost timers can fail when they wear down from use, experience a mechanical breakage or suffer electronic failure through bad contacts or wiring. You can do this by applying power to the timer while the timer is in defrost mode. Before you decide to replace your defrost timer, it’s a good idea to troubleshoot the timer to make sure it is, in fact, the problem. Pin 2: When in defrost mode, the power (pin 1) connects to pin 2, which activates the defrost mode. The timer (which is likely located in the fridge) rotates. For GE Defrost Thermostat (Part Number: AP3884317). However, if your refrigerator is having any of these symptoms, then replacing the defrost timer could solve your refrigerator problems. A few times a day, for several minutes it cuts power to the compressor and sends it to the rest of the defrost … Can you tell me how the motor works when the timer in the cooling mode? This advances it to the next mode. Most timers stay in this mode for 10 hours. Or something else preventing power from pin 2? Some of these are an inability for the refrigerator to go into a defrost cycle and revert back to cooling, the refrigerator defrosts all of the time, or the refrigerator doesn't defrost any time. 1) Refrigerator is too warm How Often Should I Change My Refrigerator Water Filter? If there is no continuity on one of the parts then it is bad and would need replaced. 1) Refrigerator is too warm 2) Freezer won’t defrost 3) Freezer is too warm 4) Frost builds up on the freezer coils. 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. Dryer Parts 1) Refrigerator is too warm 2) Freezer won’t defrost 3) Freezer is too warm 4) Frost builds up on the freezer coils. The timer. The compressor and fan pin should be active for 10 hours (or however long your defrost timer is designed to run). Problem is - I can't find either of these parts listed on the official Kenmore parts manual, the Sears parts website or *****.com. As the title says, my fridge / freezer (Amana ARS2664AB, if it matters) wasn't cooling off properly. Pin 1: The main input power is attached to pin 1. Most of the time it commands the compressor to turn on. The defrost timer has four pins labeled from 1 to 4. The defrost element itself. If it does not advance, the timer motor is probably bad and the entire timer … Is it my defrost timer? We're open and continuing to ship packages. Before pulling the unit check under the front of the unit because on some of these it will be located on the front not the back. Pin 4: When the timer is not in defrost mode, the power (pin 1) connects to pin 4, which activates the compressor and fan.