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Customer Questions and Answers for Sensor Harness (Dryer Moisture Sensor) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18025710
Manufacturer Part Number: WP3406653

This sensor harness connects the dryer's moisture sensor bars to the main wiring, helping the control or timer read moisture levels so Auto Dry cycles can advance and deliver consistent, reliable drying performance.

  • Provides the electrical path between the moisture sensor bars and the control/timer
  • Enables the dryer to sense wet fabrics and adjust or advance Auto Dry cycles
  • A damaged or open harness can cause Auto Dry to not advance, run too long, or stop early
  • Contribute to inconsistent dry times or a "Sensing" indicator that behaves abnormally
What's included: One sensor wire harness Install notes:
  • Disconnect power before servicing
  • Access the sensor bars at the front bulkhead; note wire routing and clip locations
  • Transfer routing/clips from the old harness; connect to both sensor bars and the main harness plug, ensuring snug terminals and clear wire paths
  • Restore power and run an Auto Dry test; inspect/clean the sensor bars and check harness continuity

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Questions & Answers

For Whirlpool Sensor Harness (Dryer Moisture Sensor) (Part Number: OEM18025710)

1 Answer

Ramblin Wreck, Unfortunately, we do not have rating information on the MOV on the moisture sensor harness..

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1 Answer

Gary, Check to make sure that the venting of the unit is clean from inside the dryer to the outside of the home. If this checks ok then the issue will be caused by either a thermistor that is faulty or a stuck relay on the control board. You will want to test the thermistor for resistance of 10K ohms at room temperature.

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Julio for Model Number GEW9200LW1

Whirlpool Duet Dryer, not heating. - No error codes on the display, it just won't heat. - All (3) the heating element, high-limit thermostat, and thermal cutoff located in the heater housing have continuity. - The voltage at the heating element and other components is accurate. - The thermal fuse in the blower housing has continuity. - Resistance for the thermistor in the blower housing measures just fine. - The door switch is fine. - Set the dryer to the “Diagnostic Test Mode”, successfully ran all diagnostic tests using console push buttons & LEDs on the panel, and no error code was displayed. - Checked mainboard with meter and everything seems to be fine. Tried to test moisture sensor and something does not match the troubleshooting guide. Set the dryer to the “Diagnostic Test Mode”. Opened the dryer door and immediately “3E” (Not an E3 code) code is displayed in the console window. Then, I placed a finger across the two metal sensor strips on the lint screen housing as tech documentation, but then there was no beep tone sound nor a “03” code gets displayed in the console window. As a side note, if I add wet clothes into the dryer, the dryer senses wet close and changes LED light from "sensing" to "wet" on the display. Maybe the moisture sensor wire harness is defective. Your thoughts? Thanks

1 Answer

Hello Julio,      If you have 120Vac coming from the control board to the element with one wire disconnected and the thermal cutout, high limit thermostat, and heating element are good, the issue is most likely the centrifugal switch in the motor 279787.

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Mark for Model Number wed915owwo

The dryer is running . On time dry/ air setting and it is hot hot. I tested the moisture sensor harness as suggested on tech sheet. Got nothing on the meter. I had just replaced the thermal fuses and the exhaust thermistor. Both of them previously tested defective. All other sensors test out fine. Is the harness to the moisture sensor bad. It has mov/ Metal oxide veristors. The tech sheet says that if it fails it is bad. I don't want to keep throwing money at this thing. Help please!

1 Answer

Hello Mark. If it is testing bad, it will need to be replaced. However, this would not cause the unit to heat in air dry. You need to check for a grounded element or bad main control board keeping the element turned on.

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1 Answer

Hello Steven, Most of the time if the unit finishes and the clothes are still wet there is a ducting issue. You should check for crimps, clogs and an excessively long or complicated duct run, (too many turns). The only other thing in this case that could cause this is possibly a bad control WPW10235613 that is quick cycling.

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2 Answers

David, You will want to check the thermostats and thermal fuse to make sure that they are good. Check the igniter to make sure that the igniter is glowing when the unit is turned on. If the igniter is turning on then check the flame sensor and if this checks ok then the issue will most likely be the coils on the unit being faulty. If the igniter does not glow then this would be more likely that the igniter is faulty.

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2 Answers

David, The first check should be at the dryer exhaust pipes and vent hood. They can get restricted with lint, get kinked, twisted and this will reduce the air flow and cause the dryer to take longer to dry. You can disconnect the venting from the back of the dryer and run a "normal" sized load, it should take 30 to 40 minutes to dry the load. If the problem persists, remove the lower access panel, start the dryer and observe the gas burner. the igniter should glow, then start to fade and the burner flame should ignite and burn. it should cycle like this for the complete cycle. let the dryer run and heat for 15 to 20 minutes, then re check the cycling process. If the igniter glows and fades, but there is no flame ignition, you most likely have defective gas valve coils, and they will need to be replaced.

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