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Customer Questions and Answers for Dryer Moisture Sensor Bar by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18024828
Manufacturer Part Number: WP3387223

Dryer shuts off before clothes are dry? The moisture sensor bar detects dryness levels. Easy 10-30 minute DIY fix with video guide included.

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Questions & Answers

For Whirlpool Dryer Moisture Sensor Bar (Part Number: OEM18024828)

Bill for Model Number MED5100DW0

My dryer doesn't seem to dry the clothes all the way. Many times I have to restart it a few times to fully dry the clothes. I also noticed that if the load is larger the clothes seem to dry. But if I have a small load then it seems like I have to restart the dryer a few times to fully dry the clothes. The duct work was just recently cleaned. Also I have been watching your repair videos and was wondering if the dryer sensor could be bad? Or maybe something else?

1 Answer

Bill, Check and make sure the dryer is level front to back and side to side. You can use a clean rag, apply a liberal amount of rubbing alcohol or denatured alcohol to the rag and wipe off the metal sensor bar strips, this would remove any fabric softener or softener sheet residue from the sensor. If the problem persists, the load may be too small to properly tumble and strike or land on the sensor bar to properly activate the moisture sensor circuit.

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1 Answer

John, The moisture sensor bars can be tested for continuity but there is not a set resistance that it should read.

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1 Answer

Len, With the unit shutting off after 20 minutes then this would most likely not be caused by a faulty sensor bar. You will want to access the tech sheet and check to see if there are any error codes stored. This could be a thermistor issue or a faulty main control board.

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1 Answer

Hello Frank. It is always best to replace both sensor bars at the same time if one is bad. If they are dirty, you can clean them using rubbing alcohol and you do not need to replace them.

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1 Answer

Hello Tim, This is most likely caused by a bad thermal fuse WP3392519. You should also make sure the ducting to outside atmosphere is a full 4 inch diameter without too many turns and no crimping.

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Craig for Model Number WED8410SW1 duet sport

Electric dryer control panel is dead. The light in the drum comes on when the door opens. I have tested the continuity for the thermostat on the blower and the thermistor, the heating element and the breakers on the heater. Also tested continuity of wiring to the moisture sensor and tested the door switch. I have performed several of the control board tests. How do I test the continuity of the moisture sensor itself? I put a wet cloth on the metal strips and multimeter on the sensor terminals and multimeter showed a number like 120. (not zero) How do I test the control panel? I first suspected the control board, but now am thinking its the control panel that went bad.

1 Answer

Hello Craig, You should pull the tech sheet and use the diagnostic test mode to determine the issue. If you cannot enter this mode due to the control panel being blank, check all of the connections between the boards and verify voltage to the display board. If voltage is getting to the display board and there is no display, replace the user interface board WP8571920. If no voltage is getting to the display board from the main board WPW10111606, replace the main board.

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