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Customer Questions and Answers for Refrigerator Adaptive Defrost Control Board by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM9328191
Manufacturer Part Number: 4388932

Fix frost buildup and warm fridge issues with this adaptive defrost control board. Solves freezer icing and defrost cycle failures. Moderate DIY repair.

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Questions & Answers

For Whirlpool Refrigerator Adaptive Defrost Control Board (Part Number: OEM9328191)

1 Answer

Hello T., The adaptive defrost control 4388932 is in the control box behind the display in the fresh food section ceiling on this model.

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1 Answer

Gary, The adaptive defrost control board would not cause the unit to make ice unless there is an issue with the unit not defrosting. You would have temperature issues if that is the case. You will want to make sure that the fill tube is not frozen on the unit which would be the most likely cause with all other parts being replaced.

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June for Model Number 10659587990

have kenmore 106 fridge with deforst problem. i ve checked the continuity of the heating coil which showed good on test. the continuity test for the thermostat showed that it is bad. which i then ordered the replacement. my question is, how do i check for the adaptive defrost control while thermostat is bad? my defrost control doesnt have manual dial which i can turn it on and off. it has a button which it says hold it for 60 seconds to switch into defrost and out. i ve try several times to hold the bottom to turn on to the defrost cycle but it wouldn't work.

1 Answer

June, There are a couple of procedures to force the defrost cycle on your refrigerator. 1.) a,Remove power to the refrigerator for at least 30 seconds. b, Turn thermostat off. c, Restore power to the refrigerator. 2.) a, Turn thermostat off for 15 seconds. b, Turn thermostat on for 5 seconds (REPEAT STEPS a and b TWO(2) MORE TIMES.) 3.) Turn thermostat off. In 3 to 10 seconds the control should turn on the defrost heater, the heater will turn on for 21 minutes or until the defrost thermostat opens.

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Bill for Model Number 10651599010

Kenmore side by side with cold freezer compartment, warm refrigerator compartment. No ice on evaporator coils and the fan works fine. I examined the damper control and it is in working order. When I open the refrigerator and put my hand over the damper outlet, I can't feel any air flowing from the freezer box. If I also open the freezer door, cold air immediately begins blowing through the damper outlet into the refrigerator side (as I suspect it should when the freezer door is closed). I might be way off base, but all I can think of is that the path for cold air to return to the freezer box from the refrigerator box is somehow blocked or obstructed, but I can't see where the air returns to the freezer box. Or maybe it's something else I'm not thinking of. Any suggestions? Thank you.

1 Answer

Hello Bill. The return is behind the drawers in the bottom on the divider wall. You need to check it and see if it is blocked.

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1 Answer

Hello Kevin, Since you had an electrical issue in the power supply there is a very good possibility of damage to the control. The issue can be the ADC 4388932 or the main board WPW10259855.

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