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Customer Questions and Answers for Adaptive Defrost Control Board by Frigidaire

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    • Part Number: AP4909015
    • MFG Part Number: 5303918476
    • Made by: Frigidaire
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For Frigidaire Adaptive Defrost Control Board (Part Number: AP4909015)

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Refrigerator was freezing food; we replaced the ADC with ADC IV and installed the new wiring harness. The damper motor keeps going on and off constantly. Been running almost 24 hours and the damper is still cycling off and on. The compressor and other fans seem to be working properly, but since the damper goes on and off constantly the refrigerator side is too cold and the freezer not quite cold enough.

Gd for Model Number FRS23H5ASB8

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Last night I was checking to see why by freezer and fridge weren't cooling. It seems that it was evaporator fan not working because it never came on and my coils were cold and the compressor was working. This morning I checked it and the coils had defrosted. The fan was still not working and the compressor was off. I unplugged it and plugged it back in and immediately the compressor came on the the coils were frosty again but the evap fan was not working. Also the fridge is only cooling near the bottom. Would the ADC cause this?

John for Model Number FRS26H5DSB2

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The evaporator fan never comes on. The compressor is working and the coils in the freezer are freezing evenly for the most part. At the top of the coils near the fan it's slightly heavier than the rest but everything else is evenly frosty. Only the lower part of the freezer near the coils and lower part of the fridge are cool. The upper parts are not cool like they should be. Could this be the ADC board or a bad fan not blowing cool air to both the freezer and fridge?

Chestin for Model Number frigidaire frs26h5dsb2

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How do you test the ADC board to tell if it isn't working?

Cathy for Model Number FRS26BH5CQ0

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Freezer cold. Fridge warm. Checked heater, thermostat and fan...they are ok. Fan runs. Thermostat open when short when cold and open when warm. Heater has continuity and heats up when directly wired to 120v. Significant frost buildup. Not sure if it is defrosting on its own. Wasn't feeling much air in the damper vent. So I pulled the housing down and cleaned and checked the damper and reassembled and now the damper is cycling open and shut continually. How do I force defrost to check that it works and why is damper cycling. I didn't unplug any damper connections.

Hal for Model Number frs6lf7jm0

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The damper assembly was already replaced. Just replaced the adc 1 with an adc 4. The new wiring harness only had a purple/white, black, and green wire for the fridge side control. the old harness had an additional pink wire. Is this normal with the adc 4 to not have the pink wire?

Russell for Model Number frs26r2aw4

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My evaparator fan was not working, so I replaced the adc unit with the new orange one, part # 5303918476. Now, the refrigerator part is freezing in all except the top 2 shelves. The ice maker and water dispenser are not working, I suppose the water is frozen up that goes to it. We used the new wiring harness that came with the unit. Where there was only one wire on the new one, we hooked it into the one next to the foam. My refrigerator is Frigidaire model # FRS6R5ESBG. Thanks in advance for your help.

Nancy for Model Number FRS6R5ESBG

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The water filter freezes every couple of days so need to shut off the water to fridge and let defrost then it works for a couple more days then freezes again what is the problem ? I've been told that the defrost might be going out, can any one help with tis problem

Gary P for Model Number FRS23LH5DS9

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My freezer/fridge is not working correctly, not cooling. I hear a buzzing sound for about 5-10 seconds every few minutes. The sound is coming from the compressor on the back of the machine. Fan next to compressor is working, I cleaned the condenser coils next to the compressor to be safe. Compressor is hot, not too hot, but not "warm" (not sure what would be warm vs. hot). Not too hot to touch. Plugged the fridge in and turned it on. Left it for a couple hours and checked the evaporator coils and they are frosting up just fine. After a few more hours, right before I went to bed, I heard the click/buzz cycle by the compressor again. Checked for frost on the coils and no frost...Checked again this morning and freezer is not as cold, no frost on coils. So it sounds like the compressor and fan on back bottom is working fine, but unit is not kicking back in after defrost cycle. WOuld this mean a new adaptive defrost control board? I have a new PTC starter and capacitor on order since I thought those could be the culprits at first (and it's cheap). Thanks for any insight.

Nate for Model Number FRS26H5AS

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My evaporator coil is icing up, preventing airflow from the freezer side to the fridge side. I replaced the defrost thermostat but that did not solve the problem. Is the next step replacing the adaptive defrost control board?

Doug for Model Number PLH537EESB0

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