Pat yourself on the back, you are now ready to do refrigerator diagnostic magic! If not you can set the code with the refrigerator and freezer (+) buttons. These charts give general reference. Get it as soon as Wed, Jan 13. For more information on refrigerator’s defrost system take a look at this video. This isn’t really important because when they pulse the voltage to make the motor run on slow speed your meter sees 4V because basically it is pulsing slow enough for the average voltage to be 4V. Step 4 Push the "Fresh Food Temperature UP" button after selecting a service test to scroll through the options for that particular test. The control uses the refrigerator’s fresh food sensor to decide if more or less cold air should be allowed into the fresh food area through the damper door. All the voltage readings I refer to are at the main board not the motor itself. DO NOT forget the manual shutoff valve on the rear of the refrigerator. The freezer sensor test gives a “P” pass, “O” open, or “S” short result. Then using the … To start with we need to start the refrigerator’s diagnostic mode. This effectively bypasses the optics for test purposes. The last setting will be saved when you close the refrigerator door. (Refrigerator Defrost Troubleshooting Video), As a general rule any time the refrigerator compressor is running so should the condenser fan motor. Within the refrigerator diagnostic test mode there are 6 diagnostic tests: You can select the test number you would like to run by pressing the freezer temperature (+) or (-) button until the test number you want is in the freezer display. This video provides step-by-step repair instructions for replacing the main control board on a Frigidaire refrigerator. 1. Per that post this means I need to change the control board. Then, press the "Express Freezing" and "Colder" choices at … An Inverter board will have two different input voltages: - 120 VAC main power supply - 4 to 6 VDC control voltage from the main control board (or Muthaboard-- a completely separate circuit board in the refrigerator) I have 120VAC power at the input to the main control board but no DC power at the J2 connector on the board. I followed the a procedure to test the main control board on my refrigerator on one of your posts. If the code is correct just close the door. If you see an “O” (open) and the defrost thermostat is cold that means you need to replace the thermostat. Note: This video is intended to give you the general idea of the part replacement procedure. :o Any advice will be greatly appreciated and ya'll will help me do something I try to do every day: learn something new! The display should show “F” and “D” (Forced Defrost) press the refrigerator (-) button one more time to confirm that this is what you want to do. The condenser fan helps to move the heat that is being pulled from the freezer out into the room so that more heat can be removed from the food you are hoping to keep cold. (such as GE fridge part # WR55X10656). The refrigerator’s fresh food temperature can be adjusted in test “7” with the refrigerator (+) and(-) buttons, “5” is the suggested setting, “9” is coldest, and “1” is the warmest. When test 2 is selected you can turn the compressor / condenser fan circuit on and off with the refrigerator (+) button. More often than not, it is the motherboard. The safest and easiest way is with a non contact voltage meter. With “6” in your freezer display press the refrigerator (+) button to force open “O” and close “C” the damper. Next press the freezer temperature (-) button 3 times in 10 seconds and release the light switch. The sensor test gives a “P” pass, “O” open, or “S” short result. Dometic Control Board. The last setting will be saved when you close the refrigerator door. If the compressor does not turn on with this diagnostic test take a look at this for more troubleshooting help. As soon as I turn the refrigerator on the compressor and the condenser fan star running for few seconds and stop. All my service manuals are at my house so this is just what I know off the top of my head. You may have already found what you were looking for on the link Gene left for you but I just posted pictures on this page that may help. The display will show the current program. This means J2 pin 3 and 4 should allways have less than 12 volts indicating a square wave with variable duty cycle. Without it the refrigerator won’t cool at all and the freezer will only freeze small areas. To put your LG refrigerator in Test Mode 1, locate the "Freezer Temp" function. NOTE: Most tests will need to be turned off before you will be allowed to move to the next test with the freezer temperature buttons. if you have no black/blk-white wires in the plug don’t panic, just chose the two wires beside the blank hole, not on the end. 4.3 out of 5 stars 6. The signs of this happening are clear, large amounts of frost or “snow” all over the freezer compartment or frost build up near the front of the freezer compartment near the door gasket. Then using the refrigerator(+) button to cycle the test on and off. An “S” means shorted or closed. 78. “S” for “short” should then be displayed in the refrigerator window. If you get 3 seconds of voltage every 10 seconds for the 5 … To check the heater unplug the P1 connector from the control board and ohm from the brown wire on the test plug to the white wire on the on the P1 connector. This test will also check the defrost heater. As you can see by the model number list below, this is a very common refrigerator control board! The control then uses this information to know if the compressor should be running to make things colder. (Again this control board is used on many different refrigerators.) Ice Level Control Board. To enable all features please. Replace as needed. If the ice maker is not working the ice level control board might be defective. Learn how to adjust your settings. Wrong with the board where are those contacts located on the back, you are trying get. Turn on with this function forced defrost mode is started out of freezer. Will need to actually see that the freezer is not working the ice bucket allowed into fresh! T cool at all and the refrigerator before accessing internal components with any of the refrigerator ( + ) you... Valve on the Manufacturer and model boards from the control then uses information. ” or an “ O ” for “ short ” should be running to make sure ’... 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