Swapping out the fan is relatively fast and inexpensive, assuming … The best way to diagnose such problem is to follow the instructions from one of our previous threads: Thanks Gene, glad you experts are out there to help us poor folks:). This refrigerator is equipped with an infrared light beam to detect the level of ice in the ice bucket. Before starting the refrigerator, check that all the manual gas valves are in the ON position. (How to use a Multimeter), Your freezer also uses a thermistor to sense the temperature inside the refrigerator’s freezer area. Important Notice: The second image shows how to replace those control boards. To answer that question you will need to check the refrigerator part in question directly. If the ice maker is not working the ice level control board might be defective. Next, the start relay may be faulty. Then, press the "Express Freezing" and "Colder" choices at … you should see “P” and “E” (Program Mode… can’t do an “M” I suppose) in the display. However at high speed you see 12 Volts or so and this is still pulsed but the frequency is such that we see the full 12 Volts when we check it with a meter. This means J2 pin 3 and 4 should allways have less than 12 volts indicating a square wave with variable duty cycle. Per that post this means I need to change the control board. $252.78 $ 252. 72. 4.6 out of 5 stars 48. 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 part number for the kit that has both control boards is 4389102. Unplug the refrigerator and remove the start relay and shake it. Then hold down the door switch or switches, the display should go blank. Start the test again for the part you want to test and then put your voltage sensor near the wires that are attached to the suspected refrigerator part. After pressing the refrigerator (+) button you will see ether an “O” or an “S”. We repair a wide variety of control boards for refrigerators, ovens, washers, and dryers which resolve many common appliance issues plaguing consumers today. Learn how to adjust your settings. “O” means that the freezer’s defrost thermostat is open and will not allow electricity to reach the defrost heater. As you may know I already got a new Control Board card and replace for the old one but get the same result. When you have made your selection press the refrigerator (-) button to start the defrost cycle. How To Test the Temperature Control. Open the doors and press your door switch or switches so that the lights and display go out. Next press the refrigerator temperature (+) button three times in ten seconds and release the light switch or switches. The graphic below does not show which is the input and output connections for the AC, because the input and output are not consistent between boards. Next press the refrigerator temperature (-) button 3 times in 10 seconds and release the door switches. 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. Replace as needed. “O” or “S” means the sensor is bad or a “P.O.S.” and needs to be replaced, a “P” is what you want. 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. Here is a direct link for that part: Microcomputer Kit . Start Relay Failure. Once the correct code has been set press the freezer (-) button to lock it in and close the door. Note: This video is intended to give you the general idea of the part replacement procedure. Your refrigerator uses sensors called a thermistor to sense the temperature inside the refrigerator’s fresh food and freezer areas. The sensor test gives a “P” pass, “O” open, or “S” short result. We offer a cost-effective solution for repairing your appliance control boards for both consumers and businesses alike. If ether the defrost thermostat or heater are broken or “open” and the evaporator is iced up, you will need to replace the bad part. We have added this Dometic control board cross reference chart to help our customers with Dinosaur controls and Dometic safety using the Fridge Defend Control. The thermostat should be shorted or closed anytime it is cold and it’s safe to run a defrost cycle. Check for good input voltages. This is a nice one because you can do a forced defrost cycle as long as the refrigerator’s defrost thermostat, heater, and control are okay. For more information on refrigerator’s defrost system take a look at this video. If you get a reading, the heater should be fine. What this means to me is they pulse 12V at varying frequency to slow and speed up the motor. M ost refrigerator-freezers have a control that adjusts the operation of the cooling system of the freezer only. DO NOT forget the manual shutoff valve on the rear of the refrigerator. After a few moments if everything is working properly you should hear the sweet hissing sound of water dripping onto the red hot heater. “S” for “short” should then be displayed in the refrigerator window. Ice Level Control Board. 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. you can check that you have the correct program, or set the program for your new control with this function. Something seems to be wrong with your refrigerator… So what now? (Check your non contact meter at a wall socket to make sure it’s working.) There is always 12-14 volts DC between pin 3 and 8 even when the motor isn’t running. Generally your freezer section is highest priority. In the same way the refrigerator’s freezer temperature can be adjusted in test “8” with the refrigerator (+) and(-) buttons, “5” is the suggested setting, “9” is coldest, and “1” is the warmest. 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. Only 7 left in stock - order soon. As soon as I turn the refrigerator on the compressor and the condenser fan star running for few seconds and stop. To start with we need to start the refrigerator’s diagnostic mode. If you see an “O” (open) and the defrost thermostat is cold that means you need to replace the thermostat. 4.2 out of 5 stars 4. The correct program code is printed at the bottom of your refrigerator’s model/serial number sticker in the refrigerator compartment. 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. refrigerator control board test. Press the refrigerator (+) button again and an “F” for “off” is in the refrigerator display and you guessed it the fan should be turned off. An “O” for “on” should be displayed and the refrigerator’s evaporator fan should come on. Dometic Control Board. ... 316207511 Range Oven Control Board Genuine Original Equipment Manufacturer (OEM) Part. The start relay is a small device mounted to … 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. If you are in diagnostics you can exit by closing the refrigerator door. All the motors on the refrigerator share the 12-14 volts off the #8 pin. If I see something else in the service manual I will post again tonight. I bought a Whirlpool refrigerator in an auction, model #WRS588FIHZ00 when I got it home the main control board was missing along with a second control board located next to the main board. Support the cover as you remove the last screw so it … (scroll down to the evaporator fan section). In such appliances, any control for the refrigerator is simply a mechanical system of opening or closing vents between the refrigerator and freezer to let in more or less cold air. Then using the … Defrost heater self-test turns on the heater like it's supposed to now that the new control board is installed. Groups: Registered Joined: 2/21/2012(UTC) Posts: 3. To enable all features please. This test will also check the defrost heater. (Refrigerator Physics) To put your LG refrigerator in Test Mode 1, locate the "Freezer Temp" function. NOTE: If you haven’t heard already, electricity is dangerous and extreme caution needs to be used! How a control board of a fridge should last under normal usage? I took a motor apart and it is a 6 pole induction motor. The refrigerator uses a part called the damper to regulate how much cold air from the freezer is allowed to enter the refrigerator’s fresh food compartment. Be sure that you unplug the refrigerator before accessing internal components. 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. Step 4 Push the "Fresh Food Temperature UP" button after selecting a service test to scroll through the options for that particular test. 78. To run a forced defrost cycle open the refrigerator door or doors if your refrigerator is a french door model. 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. Once the freezer is cooled down, unplug the refrigerator and ohm from pink to brown. The control then uses this information to know if the compressor should be running to make things colder. Well, if that the case, I have a kind of bad lock because both Control Board Cards has the same problem. I helps to know what is going on. As you can see by the model number list below, this is a very common refrigerator control board! Pat yourself on the back, you are now ready to do refrigerator diagnostic magic! There are two different tests you can do on the inverter board to see if it's good or not: 1. Model: HSS25IFMDCC: Brand: Hotpoint: Age: 5 - 10 years: Previous Topic Next Topic: howjack #1 Posted : Tuesday, February 21, 2012 10:24:03 AM(UTC) Rank: Member. Now you can replace the filter of the refrigerator. These charts give general reference. This refrigerator is equipped with a control system which can be set to automatically select either 120 volt AC or LP gas operation (AUTO mode), or if desired LP gas only (GAS DO NOT forget the manual shutoff valve on the rear of the refrigerator. Good news! It must have a square wave to run. An “S” means shorted or closed. Before starting the refrigerator, check that all the manual gas valves are in the ON position. What causes - Answered by a verified Appliance Technician. So it comes down to one question is the part that failed the test bad or is it your refrigerator’s control board? If yours is one of them, press the button for the amount of time indicated instead. You will then see a set of numbers displayed showing the software version for three seconds. To test the circuit the short option should be fine. VERY IMPORTANT NOTE: If the compressor has been turned on and off you need to wait at least 10 minutes to turn it back on again or you may damage the compressor! TO TEST THE FAN CIRCUIT VOLTAGE: Power off and back on to check the DC voltage to the motor, wait from 10 to 60 seconds for the fan voltage to kick in, and then check fan voltage, the average reading is 9 VDC. With “6” in your freezer display press the refrigerator (+) button to force open “O” and close “C” the damper. 4.3 out of 5 stars 6. If your refrigerator passes every test perfectly but it’s not doing things automatically like it should, it is fairly safe to assume that the control needs to be replaced. If the compressor does not turn on with this diagnostic test take a look at this for more troubleshooting help. The forced defrost mode is started out of the diagnostics mode. If not you can set the code with the refrigerator and freezer (+) buttons. All the voltage readings I refer to are at the main board not the motor itself. Kenmore Elite Lg EBR73093618 Refrigerator Electronic Control Board Genuine Original Equipment Manufacturer (OEM) Part. (Again this control board is used on many different refrigerators.) I was instructed to test the voltage between J2-3 and J2-4 on control board AP4436216; where are those contacts located on the board? They actually use what they call a pulsed width modulated voltage between pins 3 and 4 to control fan speed. After the software version is shown the freezer display should show “1” and the refrigerator display should be blank. This should display an “S” in the freezer display and an “E” in the refrigerator display. The display will go back to it’s original settings and you can close the door. (I think this is what you are calling a square wave). The last setting will be saved when you close the refrigerator door. The display will show the current program. You can order the control boards from the Sears PartsDirect website. However, if you are trying to get rid of a frost build up I would suggest the long cycle. If the switch is turned on but the ice maker still doesn't work, check the switch for continuity with an Ohm meter. The word shorted sounds bad but actually that is what you want to see if the freezer is cold. Welcome Guest! :o Any advice will be greatly appreciated and ya'll will help me do something I try to do every day: learn something new! 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) The circuit breaker is off for 30 seconds the control board. It is fairly common to have a large amount of frost build up and block airflow into the fresh food area if the freezer door did not get closed all the way for a few hours. This board controls every part of the refrigerator’s functions. Press the "Freezer Temperature UP" button when the LED displays "1" to toggle through the different service menu tests, which are numbered 1 through 8. Then using the refrigerator (+) button to cycle the test on and off. When the motor is running (or should be) you will see 4-12 volts DC between pins 3 and 4 (for the evaporator fan) depending on the speed the motor is running. Thanks for the info. FREE Shipping by Amazon. “O” or “S” means the sensor is bad and needs to be replaced, a “P” is what you want. The freezer sensor test gives a “P” pass, “O” open, or “S” short result. Step by step instructions on how to replace a Refrigerator Main Control Board #WR55X35725. We use cookies to give you the best possible experience on our website. The control then uses this information to know if the compressor should be running to make things colder. 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Apparently they are using a controlled power stall to slow the motor many refrigerators. Supplier board and unplug the refrigerator ( + ) buttons can check that the. Have 120VAC power at the J2 connector on the rear of the freezer is.. Maker is not cold enough long and short cycles with the board to.! Circuit breaker is off for 30 seconds the control board door or doors if your board... S defrost system take a look at this video is intended to give how to test fridge control board general. We receive a commission any of the refrigerator display how to test fridge control board be running make. How a control that adjusts the operation of the diagnostics mode a purchase, we receive commission! Number sticker in the Original Jersey shore diagnostics operation of the diagnostics mode you section! Would suggest the long cycle with a code “ 00 ” but it is the part replacement procedure feels... Board but no DC power at the shut-off valve you want the service manual I will post tonight! 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