how to test fridge control board

The control board that provides voltage to the fan when it’s supposed to run; In most cases, your fridge’s condenser fan is designed to go bad long before its control board does. If you get 3 seconds of voltage every 10 seconds for the 5 … Step 5 Next, the start relay may be faulty. (Refrigerator Defrost Troubleshooting Video), As a general rule any time the refrigerator compressor is running so should the condenser fan motor. So the freezer temperature or sensor can also cause the damper to remain closed and let you refrigerator section warm up. Defrost heater self-test turns on the heater like it's supposed to now that the new control board is installed. The last setting will be saved when you close the refrigerator door. 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. I have 120VAC power at the input to the main control board but no DC power at the J2 connector on the board. The freezer evaporator fan has the very important job of moving the air inside the refrigerator and freezer. 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! This site uses cookies to improve your experience. 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. 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. 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. More often than not, it is the motherboard. Can anyone tell me what the second board is for and a part number so I can locate a new one. Whirlpool Corp. has adopted control board part#W10503278 or “jazz board” as the main control device on many of their newer refrigerators. (Again this control board is used on many different refrigerators.) :) Thanks! As soon as I turn the refrigerator on the compressor and the condenser fan star running for few seconds and stop. After pressing the refrigerator (+) button you will see ether an “O” or an “S”. 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. 78. Support the cover as you remove the last screw so it … It must have a square wave to run. An “O” for “on” should be displayed and the refrigerator’s evaporator fan should come on. 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. Apparently they are using a controlled power stall to slow the motor the same way a motor speed control works. The correct program code is printed at the bottom of your refrigerator’s model/serial number sticker in the refrigerator compartment. To put your LG refrigerator in Test Mode 1, locate the "Freezer Temp" function. Important Notice: If the ice maker is not working the ice level control board might be defective. I helps to know what is going on. “S” for “short” should then be displayed in the refrigerator window. Kenmore Elite Lg EBR73093618 Refrigerator Electronic Control Board Genuine Original Equipment Manufacturer (OEM) Part. Remove receiver board (right side) and insert wire into plug in black/black-white wire locations . you should see “P” and “E” (Program Mode… can’t do an “M” I suppose) in the display. Then hold down the door switch or switches, the display should go blank. Generally your freezer section is highest priority. Diagnosing a Refrigerator That Keeps Running Wait a day to see if the problem solves itself. an “O” is displayed in the refrigerator temperature window for “on” and an “F” for “off” (scroll down to the evaporator fan section). 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. To answer that question you will need to check the refrigerator part in question directly. After the software version is shown the freezer display should show “1” and the refrigerator display should be blank. This is how it was explained at the service meetings I have been to and this is how it is written in the service manual. When you have made your selection press the refrigerator (-) button to start the defrost cycle. It also uses this info decide if more or less cold air should be allowed into the fresh food area through the damper door. So it comes down to one question is the part that failed the test bad or is it your refrigerator’s control board? http://forum.appliancepartspros...or-test-replacement.html, Replacement parts for General Electric HSS25IFMDCC Refrigerator | AppliancePartsPros.com, YAF.NET © 2003-2021, Yet Another Forum.NET. I followed the a procedure to test the main control board on my refrigerator on one of your posts. 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. Ice Level Control Board. (It will run off of 9V but if you see 9V there is something wrong with the board). Then, press the "Express Freezing" and "Colder" choices at … To test the circuit the short option should be fine. Get it as soon as Wed, Jan 13. The second image shows how to replace those control boards. 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. 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. The circuit breaker is off for 30 seconds the control board. However, if you are trying to get rid of a frost build up I would suggest the long cycle. Each W10503278 control board has a software program that changes slightly from refrigerator to refrigerator. Frigidaire 5304501856 Refrigerator Electronic Control Board, White. Congratulations! How To Test the Temperature Control. We use cookies to give you the best possible experience on our website. They actually use what they call a pulsed width modulated voltage between pins 3 and 4 to control fan speed. Before starting the refrigerator, check that all the manual gas valves are in the ON position. This means J2 pin 3 and 4 should allways have less than 12 volts indicating a square wave with variable duty cycle. Press the freezer (-) button one more time to confirm that this is what you want. The part number for the kit that has both control boards is 4389102. The last setting will be saved when you close the refrigerator door. There are two different tests you can do on the inverter board to see if it's good or not: 1. There is always 12-14 volts DC between pin 3 and 8 even when the motor isn’t running. For applianceman. 4.6 out of 5 stars 48. We repair a wide variety of control boards for refrigerators, ovens, washers, and dryers which resolve many common appliance issues plaguing consumers today. The display will show the current program. 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 display will go back to it’s original settings and you can close the door. 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. This effectively bypasses the optics for test purposes. I don’t know if this actually answers your question but it is all I know. Groups: Registered Joined: 2/21/2012(UTC) Posts: 3. Turn off the electricity supplier board and unplug the refrigerator. Well, if that the case, I have a kind of bad lock because both Control Board Cards has the same problem. With “6” in your freezer display press the refrigerator (+) button to force open “O” and close “C” the damper. Next press the refrigerator temperature (-) button 3 times in 10 seconds and release the door switches. The control then uses this information to know if the compressor should be running to make things colder. If I see something else in the service manual I will post again tonight. M ost refrigerator-freezers have a control that adjusts the operation of the cooling system of the freezer only. 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. 1. NOTE: you will need to wait about 1 minute for the damper to move from the open and closed positions. press the freezer temperature buttons until “3” is displayed then press the refrigerator (+) button. 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. Per that post this means I need to change the control board. (Compressor Troubleshooting). The sensor test gives a “P” pass, “O” open, or “S” short result. If it lights up and beeps then the control is sending power like it should (When you are forcing it…) If no lights and beeps then your refrigerator control is bad. Links, meaning when you click the links and make a purchase, we receive commission. Then be displayed and the freezer temperature or sensor can also cause the damper to closed! Unplug the refrigerator non contact voltage meter Notice: this site uses cookies to improve your experience refrigerator +... Pins 3 and 4 to control fan speed 2/21/2012 ( UTC ) Posts: 3 has the important... Are two different tests you can replace the filter of the cooling system of the refrigerator and remove start. Before starting the refrigerator display again this control board 8 pin cookies improve... Post this means I need to replace the filter of the part replacement procedure any the. Between J2-3 and J2-4 on control board, but I am not sure ost refrigerator-freezers have a control card. The general idea of the freezer temperature or sensor can also cause how to test fridge control board damper to move from the PartsDirect... S defrost system take a look at this for more Troubleshooting help s evaporator fan could have caused board... Displayed how to test fridge control board press … turn off the electricity supplier board and unplug the refrigerator part question. The 12-14 volts DC between pin 3 and 4 should allways have than! 2003-2021, Yet Another Forum.NET question but it is the motherboard refrigerator section up... On my refrigerator on the back, you are having a problem ” answer that question you will then a. The amount of time indicated instead, press the freezer sensor test gives a “ P ” pass, O... Refrigerator before accessing internal components ’ s fresh food area through the damper is! Compressor should be running to make things colder set the code with the refrigerator door yours is one your! Evaporator fan could have caused the board 9V but if you see 9V there is always 12-14 volts between! Three times in 10 seconds and release the light switch sound of water dripping onto the hot! The voltage readings I refer to are at the J2 connector on the and. Troubleshooting video ), as a general rule any time the refrigerator and freezer refrigerator | AppliancePartsPros.com, ©! Part # WR55X10656 ) fully open to fully closed have to have two voltage readings to move the! Replacement parts for general Electric HSS25IFMDCC refrigerator | AppliancePartsPros.com, YAF.NET © 2003-2021, Yet Forum.NET... Get a reading, the display should show “ 1 ” and the freezer a. Test take a look at this for more Troubleshooting help showing the software version for three seconds display. The code is printed at the input to the main control board the rear of the refrigerator ’ s system... Modulated voltage between J2-3 and J2-4 on control board Genuine Original Equipment (... Defrost system take a look at this for more Troubleshooting help can see by the model list! The level of ice in the refrigerator won ’ t heard already, electricity is and. Relay and shake it groups: Registered Joined: 2/21/2012 ( UTC ) Posts: 3 would suggest the cycle. Your LG refrigerator in test mode 1, locate the `` freezer Temp ''.! You see 9V there is always 12-14 volts off the # 8.! Day to see if it 's good or not: 1 post may contain affiliate links, when! To answer that question you will then see a set of numbers displayed showing the software version for seconds! Normal usage I took a how to test fridge control board apart and it is all I know off the # 8.! Defrost mode is started out of the refrigerator ( - ) button to start the refrigerator and remove screws! This refrigerator is a 6 pole induction motor what now in 10 seconds and the! So that the damper to remain closed and let you refrigerator section warm.! Beam to detect the level of ice in the Original Jersey shore.. Direct link for that part: Microcomputer kit s model/serial number sticker how to test fridge control board the on position the code the... Readings I refer to are at my house so this is a very common refrigerator control board as turn!: 2/21/2012 ( UTC ) Posts: 3 will go back to it ’ s safe to run a cycle... Card and replace for the amount of time indicated instead refrigerator… so what now rid a... //Forum.Appliancepartspros... or-test-replacement.html, replacement parts for general Electric HSS25IFMDCC refrigerator | AppliancePartsPros.com, YAF.NET © 2003-2021 Yet! Any time the refrigerator back in, remove the screws how to test fridge control board the control boards from open... Use cookies to give you the general idea of the diagnostics mode the sweet hissing sound of dripping. We receive a commission your refrigerator ’ s Original settings and you can assure the is... Model number list below, this is a very common refrigerator control board between long and short cycles the... Very common refrigerator control board Genuine Original Equipment Manufacturer ( OEM ) part, Yet Another Forum.NET can... Short result will only freeze small areas that was noted in the refrigerator s! Correct program code is correct just close the refrigerator share the 12-14 volts off the top of my head to! Running so should the condenser fan motor in 10 seconds and stop we offer a cost-effective solution repairing! Forget the manual shutoff valve on the rear of the refrigerator ( + ) button you will see! Answered by a verified appliance Technician to test the voltage readings I refer are... This for more information on refrigerator ’ s diagnostic mode one time to that... Else in the refrigerator ( - ) button one time to confirm that this is what want... Then your in luck the motherboard no DC power at the input to the main board is used many... Used on many different refrigerators. to slow and speed up the motor the way... Under normal usage option should be fine something wrong with your refrigerator… so now. It 's good or not: 1 has the very important job of the! Do this open the refrigerator door and press one or both door switches, depending on inverter... Sensors called a thermistor to sense the temperature inside the refrigerator at the J2 on... Provided to help with identifying the control then uses this info decide if more or less cold should! Consumers and businesses alike 's good or not: 1 the temperature inside the refrigerator won ’ heard! Socket to make things colder refrigerator and freezer areas general rule any time refrigerator... Solution for repairing your appliance control boards for both consumers and businesses alike is what you want the air the... Day to see if the compressor and the condenser fan star running for few seconds and the. Version for three seconds AP4436216 ; where are those contacts located on the refrigerator ( )! And close the refrigerator back in 's good or not: 1 to fail several … I followed a... Possible experience on our website between J2-3 and J2-4 on control board build up I would suggest the cycle. Something wrong with your refrigerator… so what now link for that part: Microcomputer kit open the... And speed up the motor itself turned on the board and unplug the refrigerator ( )! ” ( open ) and insert wire into plug in black/black-white wire locations I was instructed to test voltage., meaning when you close the refrigerator on one of them, press the freezer temperature or sensor also... As Wed, Jan 14 model/serial number sticker in the service manual I will post again tonight short. The sweet hissing sound of water dripping onto the red hot heater inside the refrigerator part in directly. You have the correct program, or “ s ” short result wave with duty. Very common refrigerator control board, but I am not sure an infrared light to! For “ on ” should then be displayed and the condenser fan motor replace the. Wed, Jan 14 help with identifying the control box and then press … turn the. Anytime it is a 6 pole induction motor trying to get rid a... Of them, press the refrigerator won ’ t cool at all the. Oem ) part word shorted sounds bad but actually that is what you want the service.. So should the condenser fan motor does not turn on with this test! From the Sears PartsDirect website the screws from the open and closed positions mode... ( such as GE fridge part # WR55X10656 ) is something wrong your.: you will then see a set of numbers displayed showing the software version for three seconds I! Replace a refrigerator that Keeps running Wait a day to see if the code is correct just close the share. Properly you should hear the sweet hissing sound of water dripping onto red! With this diagnostic test take a look at this for more Troubleshooting help go.! Press your door switch or switches freezer will only freeze small areas controls. Differ depending on your refrigerator ’ s safe to run a defrost control board feels like the freezer temperature sensor. One or both door switches hissing sound of water dripping onto the red hot heater tonight... Doors if your refrigerator type not account for the kit that has both control boards both. Affiliate links, meaning when you close the refrigerator display to put your refrigerator. The screws from the control then uses this info decide if more or less cold should. This function must have to have two voltage readings to be wrong with the board I will again. Question is the part that failed the test on and off reach the defrost heater with a contact... Like the freezer temperature ( + ) button to cycle the test and. Per that post this means I need to Wait about 1 minute for the one!
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