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Customer Questions and Answers for Refrigerator Temperature Sensor by Samsung

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By: Samsung
Part Number: OEM12406710
Manufacturer Part Number: DA32-10105R

If your refrigerator won't cool properly or freezes food, the temperature sensor may be faulty. Moderately easy DIY repair with our video guide.

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Questions & Answers

For Samsung Refrigerator Temperature Sensor (Part Number: OEM12406710)

1 Answer

Jim You will need to test the sensor in the freezer. How to Check Sensor Resistances Accurately Make ice slurry. To do this, fill a cup with ice (preferably crushed), then add water and a teaspoon of salt to make a slush. Mix thoroughly and allow to sit for 2 to 3 minutes. This will give you a 32*F reference. Now, lower the sensor into the mixture and leave for about 1 minute, then check the resistance. It should be very close to 13,300 ohms. Before reinstalling the sensor, be sure to rinse it with fresh water and dry it.

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1 Answer

Lenny, You will want to check to make sure that the condenser fan is running and make sure that the condenser coils are clean. If the fan stops or the coils are dirty it could cause an elevated temperature in the freezer compartment causing the ice cream to be soft. If the fan is running and the coils are clean then check to make sure that the setting on the freezer for this unit is set for -2 degrees. If it is then test the thermistor to make sure that it is good. at -2 degrees, test at the control board for a resistance of about 30K ohms of resistance. The connector you will test on the control board will be the CN30 connector and will test from the ground Pin 4 to Pin 5 which is the freezer sensor. You will want to disconnect the connector from the unit when testing.

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1 Answer

Brenda, You will want to check the defrost sensor to make sure that it is good. If it is good then this will be a faulty main control board.

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1 Answer

Sorry Josef. The model number RS21KPMS is an international model and we can not look up the location of this part or tell you if it will work for your model. Thank you.

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1 Answer

Allison, This issue would most likely be caused by a faulty main control board that is sticking in defrost.

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1 Answer

Delmar, At the top of the freezer compartment or on the back wall there will be a cover in which the thermistor should be located in one of these 2 locations. It will not be the same as the defrost sensor.

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Nikhil for Model Number RF197ACRS/XAA

The fresh food part of the fridge has not been able to maintain the temperature. The evaporator coil, when checked, has had a lot of ice and frost build up. In the past I have manually defrosted 3-4 times and cleared the drin but it repeats every month. I checked the defrost sensor and at room temperature the resistance was 5.1 ohm. The heater and the bimetal assembly has a resistance of 500 kohm or so and had continuity. The thermal fuse on the side of the evaporator coil had a resistance of 550 kohm. Is there anything else to verify or do be done to consider that the circuit board is the cause?? Thanks

1 Answer

Nikhil. Based on the readings that you are getting then this issue will be a faulty main control board with everything checking ok.

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1 Answer

Conrad, the Defy f640 is a product we have no parts or service information on. But based on your post information and description, the sensors would be the least likely issue, and it would most likely be a fault in the PC board.

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1 Answer

Hello Mike. It sounds like the icemaker is bad and will need to be replaced on the unit.

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1 Answer

Judy, As long as the panel is in there and not falling out then it would not be necessary to put the screws back in. You may want to pull the unit out and check to make sure that the cap on the drain is not plugged up.

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