To test to see if the mechanical timer is the issue, you can manually turn on the defrost cycle through a dial-in your freezer. If the board fails, the refrigerator will not go into the defrost cycle. This DIY repair guide shows how to replace a faulty refrigerator electronic control board in 7 quick steps. Check or test each of the possible causes. Step 2: Once you have the control board cover removed look at the bottom of the board and remove the blue plug connected to the three big pins, sometimes they are pretty tough to get off, but do not go prying on it. You will find some part is defective or is not working properly. the auto-defrost stopped working so the fridge would stop cooling even though the freezer was cold. Even if you attempt to turn it on manually, nothing will happen. Step 3: The Freezer will need to still be cold for this test work properly. Also unplug the white plug on the right side of the the blue … Then Remove the main control board cover plate from the back of the refrigerator. 2124 Baldwin Ave, The first step to troubleshoot GE refrigerator defrost problem is knowing the components of the defrost system and their location. note: if option #2 does not work, try option #1 before replacing control. Pre-Chill: When the main control board determines that the defrost cycle is necessary, the main control board will force the refrigerator into a continuous cool mode (this is Pre-Chill). Refer to next. If it seems to difficult use a pair of needle nose pliers to pull the plug off with. If the thermistor senses the wrong temperature, the electronic control board won’t turn on the defrost … If the defrost heater and defrost thermostat are working properly, the defrost control board is likely defective. 3. Disconnect the ground wire and remove the screw that holds the damper in place. If it seems to difficult use a pair of needle nose pliers to pull the plug off with. Call our team today to schedule a technician to diagnose the more advanced designs. As the heater assembly is a major part of your refrigerator, it can also be a pretty involved repair. Remove the two screws that hold the defrost control board in place. However, from time to time, these devices can apparently fail, and cause problems which include leaks upon the floor, a warm refrigerator portion, or a freezer section which has ice forming across the back. defrost heater will turn on for 21 minutes or until bi-metal opens. There is a DIY video on Youtube that shows exactly how to do it. Until it is fixed, you can expect to have your freezer taken over by frost build-up. For a while I manually defrosted it and it would work for a while but this control board fixed the problem immediately. However, the defrost is made up of several parts, and if only one of which is not functioning properly, it can make the whole cycle non-functional. This should display an "S" in the freezer display and an "E" in the refrigerator display. The defrost control board determines how often to run the defrost cycle. All on/off LED’s will blink, Stop pressing to view load status. Shop Today! Control board. You can test this part for continuity with a multimeter but is better to test the above options first. The board then adjusts how soon the refrigerator goes into defrost. Adaptive Def. – The defrost control … Refrigerator Defrost Electronic Control Board for Whirlpool GR2FHMXVS02 Refrigerator. Below we have listed the most common problems for Samsung refrigerator. Insert your black lead into the 5th wire on the white connector and your red lead into the 4th wire as shown in the image below and you should get in the range of 15k - 2ok ohms, if not the evaporator thermistor is bad. It also works with the sensor to maintain temperature in the fridge and freezer, which controls a proper defrost cycle. GE Refrigerator Not Cooling Enough . It will only make a closed circuit and allow voltage to the defrost heater if the temperature in the freezer is low enough. If the defrost heater is defective, frost would form on the evaporator coil and on the walls of your Samsung refrigerator. Step 1: Unplug the refrigerator! If not functioning, then the frost will not melt away. In any frost free refrigerator there is a defrost system which controls the cooling and defrost cycle. Damaged defrost control board; You can look into the defrost control board after you’ve tested the defrost heater and timer, and they’re both okay. Then Remove the main control board cover plate from the back of the refrigerator. When the control board determines its time to defrost the evaporator it will send voltage to the defrost heater which heats up to melt the built up ice off the evaporator, the water from the melting ice then goes down the defrost drain to the defrost pan at the back of the refrigerator where it will sit and be evaporated by the heat from the compressor. Joe for Model Number MZD2768GEW. So, you can try the following tips to fix the issue. Samsung Refrigerator Troubleshooting Guide. However, if it has gone faulty, it will prevent the defrost heater from turning on, which completely stops the process. If the control fails, your refrigerator can’t defrost automatically. If the defrost control board is faulty, your refrigerator would not go into the defrost cycle. 4. MD Using your ohm/volt meter put the red lead in the center plug of the blue connector then put your black lead on the farthest left pin of the white plug it will be the pin with the orange wire and that circuit should have continuity. If the defrost function is not working on your refrigerator it could be an issue with the defrost control board. The defrost thermostat keeps track of the temperature of the evaporator coils in your freezer. For most homeowners, they don't have all of the same appliance woes as their parents did thanks to constantly evolving appliance technology. General Electric Refrigerator Troubleshooting Instructions. Maytag refrigerator troubleshooting not cooling. Defrost Bi-Metal Thermostat : The defrost bi-metal thermostat also clips to the top of the evaporator and is a safety feature so that the defrost heater can not come on if the temperature is not cold enough in the freezer.