Defrost Timer not functioning: I know my defrost timer isn't working properly. I have been manually defrosting the freezer regularly. If I knew exactly where the defrost timer was located, I could replace it. So does anyone know where that pesky little defrost timer is located in the refrigerator?
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Re: Need to Replace Defrost Timer
Check bottom back left should be a small hole with a small plastic place to turn with a srew driver some are insidethe fride on the left side arond where the lite is if you see a mall plate with a srew open it it should be there thanks from gilles
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During this time of defrost you manually advanced into, Did the heater turn off them self? If they did the defrost thermostat does work, if the heaters stayed on the entire time (1hr) than the thermostat needs to be replaced as well as the timer. The thermostat is a cut off device to prevent the over heating of the freezer and liner (safety device). Think of a defrost timer as an egg timer, this timer runs regardless of function just advances like a clock. The thermostat turns off the heaters when they reach a temp rather then time. I hope this answered your question, good luck
Just turn the defrost tmer clockwise to cause defrost or run conditions. If you bypass the defrost timer you will have problems like shorting of wiring or loss of the timed defrost. Why not replace the defrost timer if you know it is defective? What is the model number of your refrigerator? Thanks Sea Breeze
I want you open up the control panel or look for an opening where you can place a flathead screwdriver through the panel to turn the defrost timer slowly until the compressor and fans turn off. Thish should manually force defrost providing the defrost heater and defrost thermostat are still good. The defrost timer is location number 4 in this photo HERE Leave timer in that position for up to 45 minutes. If doing this causes defrost to work simply replace the=> 482493 Defrost Timer If this does bot work then you will need to move and check out or replace the=> 2263749 Defrost Heater Assembly Let me know what you find Sea Breeze
Look at the rear wall of the freezer for a layer of frost building on the outside of that panel. If yes the refrigerator may be missing defrost. That would explain why the feezer temperatures are warming. If the ice maker is above 5 degrees F it will not be able to make ice. Things to check are the=> 2162044 Defrost Timer
and the=> 4387499 Defrost Thermostat I would like you to locate the defrost timer and turn the center with a flathead screwdriver slowly clockwise until compressor and fans turn off. Leave like this up to 30 minutes. This will cause the defrost to begin. If timer does not restart the compressor an fans after 30 minutes simply turn the timer again slowly clockwise until the compressor and fans restart. If the timer need to be turned like this then this would indicate that the defrost timer is defective and will need replaced. Let me know if you have questions Thanks Sea Breeze
Look at rear wall inside the back of the freezer and see if a frost line is building on rear wall. I have a feeling your freezer is not defrosting properly and not sure exactly what number you model has but checking the defrost timer Click Here=>ED5FTGXKQ00 Controls is where I would begin.We will need to run a couple test to make sure your=> 2323198 Heating Elementand Defrost Thermostat=> 2321799 Defrost Thermostatare working properly.Testing heating element is also shown on same page above.Try turning the defrost timer clockwise slowly until refrigerator compressor stops running. This will place the freezer in manual defrost. Then tell me if once you do this if freezer begins defrost. If yes then the defrost timer=> 482493 Defrost Timeris at fault. If stays in defrost simply turn again until compressor restarts again. After doing this I will want you to watch this how to replace defrost heater=> Here I know this may be a little confusing but defrosting manually will help you see which parts may be needed. I will be here to answer any questions you may have, Thanks, Sea Breeze
There are three parts to all defrost systems. 1. Defrost Heater2. Defrost Timer3. Defrost Thermostat Without a model number I could not look up a diagram or part numbers. I very seldom see a bad heating element. Most common is a bad defrost timer, second most common is the defrost thermostat.
If your unit is NOT a no frost/self defrosting unit, you will need to manually defrost it.
If it is a no forst style, then you will need to open up the back panel of your freezer and locate the defrost circuit components - defrost heater; defrost thermostat and defrost timer. The defrost heater normally looks like a short piece of rope lighting. You can check to find out if it is good with an ohm meter. Disconnect the defrost heater and put a lead on both ends - if you have continuity then it is good. If you don't replace it. The thermostat and timer are harder to check and if the defrost heater is good, I would advise you to replace both.
Click Here for your user manual=> MQU1556AEW.pdf The settings for defrost should come automatically every 12 hours. You may test the defrost timer that appears to be behind the kick plate at base and front bottom of refrigerator by removing the kick plate first and using a flathead screwdriver turn slowly clockwise until compressor stops. After a few minutes you should be able to hear a crackling noise or sizzle by opening the door and listening. Leave the timer like that for up to 35 minutes and if the freezer does not start on its own the the timer is not working properly and will need replaced. Click Here=> MQU1556AEW Unit parts number 15 in photo is defrost timer. The defrost timer is part number=> 4357124 Defrost Timer Check for air leaks around door seal as this will cause the same symptoms. If by chance the defrost timer works and the defrost does not then let me know here or here=> Appliance 911 The only other parts are the defrost heater number 16 in photo MQU1556AEW Unit Parts and part number for defrost heater is Click Here=> 8201749 If you change the defrost heater it is always good to replace the defrost thermostat number 18 in MQU1556AEW Unit Parts The defrost thermostat is part number=> 1-81801-001 The most likely problem is the defrost timer but I needed to cover every possibility. If you have questions please feel free to ask, Thanks, Sea Breeze
If the compressor doesn't run, it is likely that the defrost timer is malfunctioning. This part is located near the compressor. To test the defrost timer: Step 1:Unplug the refrigerator.
Step 2:Disconnect the wires from the timer and timer motor. Remove the timer from its brackets by backing out two retaining screws. Step 3:Test the defrost timer with a VOM set to the RX1 scale. Clip one probe of the VOM to each defrost timer -- not motor -- wire, and turn the timer control screw shaft until it clicks. If the defrost timer is functioning, the meter will read zero. If the needle jumps, the defrost timer is faulty. Replace it with a new one of the same type. Step 4:Connect the new defrost timer the same way the old one was connected.
To check the defrost timer motor, clip one probe of the VOM to each motor wire, setting the scale to RX100. If the meter reads between about 500 and 3,000 ohms, the motor is functioning properly. If the meter reads higher than 3,000 ohms, the timer motor is faulty. Replace it with a new one of the same type. Connect the new motor the same way the old one was connected.
If the compressor doesn't run, it is likely that the defrost timer is malfunctioning. This part is located near the compressor. To test the defrost timer: Step 2:Disconnect the wires from the timer and timer motor. Remove the timer from its brackets by backing out two retaining screws. Step 3:Test the defrost timer with a VOM set to the RX1 scale. Clip one probe of the VOM to each defrost timer -- not motor -- wire, and turn the timer control screw shaft until it clicks. If the defrost timer is functioning, the meter will read zero. If the needle jumps, the defrost timer is faulty. Replace it with a new one of the same type. Step 4:Connect the new defrost timer the same way the old one was connected. To check the defrost timer motor, clip one probe of the VOM to each motor wire, setting the scale to RX100. If the meter reads between about 500 and 3,000 ohms, the motor is functioning properly. If the meter reads higher than 3,000 ohms, the timer motor is faulty. Replace it with a new one of the same type. Connect the new motor the same way the old one was connected.