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Customer Questions and Answers for Defrost Control Board by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM12211218
Manufacturer Part Number: 61005988

Adaptive defrost control board.

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Questions & Answers

For Whirlpool Defrost Control Board (Part Number: OEM12211218)

1 Answer

Ron, You will want to pull the cover off the rear wall of the freezer and check to see if the coils are impacted with ice. If they are then test the defrost heater and thermostat assembly for continuity. If there is continuity then the issue will be a faulty defrost control board 61005988. If there is no continuity then it will be a bad heater and thermostat assembly WP61006199.

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1 Answer

Big Gil, The most common cause for all other parts to operating but the compressor then the issue will be a faulty start relay on the compressor. The start relay for your unit would be 12002794.

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Bryan C for Model Number MSD2756GES

Hi, Our side-by-side Whirlpool Plus is not cooling - it is holding temperature but the freezer is above 18F and the refrigerator side is cool but not reaching proper temperature. Ice maker is no longer making ice as the temp is not low enough to start the ice maker. I checked the condenser fan motor under the refrigerator, it is running. Cleaned out the bottom of the refrigerator from dust and dirt. Seals on both doors look good. The next thing I checked was the freezer compartment - especially the condenser coils. When I opened the area there was no frost on the coils but a huge ice block on the inlet copper line coming into the refrigerator - return loop (roughly were the defrost heater assembly sensor attaches). I unplugged the refrigerator and got out the air dryer. Cleared the ice out and plugged the refrigerator back in. Waited about 4 hours and temp returned to the original setting of ~40F (not good). I have been investigating all of the thoughts/inputs from other repairs on your website. From the input it seems the defrost controller board and the defrost heater assembly are the potential cause of the ice block and refrigerator freezer not reaching temperature. I welcome your input and what else could possibly cause this problem. I have already ordered the 2 parts above and am waiting arrival.

1 Answer

Hello Bryan. If the freezer is warm and the condenser fan is running and the coils are clean, you will need an HVAC tech. It sounds like the sealed system is failing on the unit. They will need to look for a restriction and check the Freon level. Thank you.

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1 Answer

Mike, You will want to check the condenser and make sure that the condenser is clean. Also make sure that the condenser fan motor is running. If it is not running then this will cause the issue that you are having.

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1 Answer

Hello Gman, The ones that can be forced into defrost can be tested by forcing a defrost cycle. This is done on the earlier ones by shorting the first two terminals to the left of the board with the terminals facing up to one another. The ones that this cannot be done to have the first two terminals on the left side will be further apart than the other terminals. These have to be forced into defrost by pressing the door switch 5 or 6 times in 5 seconds. If either design does not go into defrost, (fans and compressor turn off and the defrost heater begins to heat if the defrost circuit is operating properly), the board 61005988 will require replacement.

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1 Answer

Hello MCW. You will need to fully defrost the coils in the unit. Otherwise, the unit will not defrost long enough to melt all the ice off them.

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1 Answer

Hello Yuan. It sounds like you may have a defrost problem with the unit. Check and see if there is any frost build up on the evaporator coils in the freezer. If so, you will need to test the defrost heater and the defrost thermostat. They should read closed for continuity when cold. You can test this with a multi-meter TJMA-DMT3. I will include a link at the end to assist you how to use the multi-meter if needed. If both parts are good, you will need to replace the control board. Once the problem is repaired, you will need to thaw out the ice on the coils before the unit will operate properly. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html

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