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Whirlpool Duet Dryer Model GEW9200LW0  Rating:  Rating
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 Posted: Fri Nov 19th, 2010 01:58 am
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mattmag
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As noted, have a Whirlpool Duet Electric dryer, that has worked flawlessly for about 8 years. Suddenly, it decided not to dry clothes very well, and was not running as long as what would be "normal".

On investigation, I noticed that the "usual" sequence of adding wet items-selecting automatic cycle and temp-press and hold start-then watch the little red LED's on the left change quite rapidly from "Sensing" to "Wet" was modified to watching the little red LED's on the right stay eternally on "Sensing". All the while, the time remaining indicator would start counting down and ultimately finish early.

I did locate on this forum (gotta love Google) the steps of pressing "more time-less time-more time-less time" which lights up the entire front panel. I wetted my finger, and rubbed the two shiny sensing-strips on the inside lower portion of the lint screen, and there was no beep.

So, is that a valid test for this model? What else should I be doing?

Thanks muchly in advance!!

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 Posted: Sat Nov 20th, 2010 02:02 am
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mattmag
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Can anyone help please?

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 Posted: Sat Nov 20th, 2010 02:14 am
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RegUS_PatOff
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from the Tech Sheet 3979300:

1. Enter the Diagnostic Test mode.

2. Open the dryer door. If a beep tone is heard and "03" is displayed on the console as
soon as the door is opened, a short circuit exists in the moisture sensor system.
➔ If this doesn't happen, go to step 3.
➔ Otherwise, go to step 4.

NOTE: Over drying may be caused by a short circuit in the sensor system.

3. Locate the two metal sensor strips on the face of the lint screen housing.
Bridge these strips with a wet cloth or finger.
➔ If a beep is heard and “03” is displayed on the console, the sensor passes the test.
➔ If not, go to step 7.

4. Unplug the dryer. Access the machine control electronics.
Remove the connector P2 from the circuit board.
Measure the resistance across terminals 1 (yellow/red wire) and 2 (black/yellow wire).
➔ If the ohmmeter does not indicate (infinity) open circuit, go to step 5.
➔ Otherwise, measure the resistance across between pins 1 and 2 of connector P2 on the machine control board.
If a resistance less than 1 MΩ is measured (with analog or digital ohmmeter), inspect the control board for any debris bridging these pins.
If no debris, replace the machine control electronics.

5. Access the moisture sensor by removing the toe panel (see Removing the toe Panel,
Disconnect the sensor from the wire harness. See figure 9.
Measure the resistance across the outermost contacts of the cable that includes the two red MOVs.
➔ If a small resistance is measured, replace this component (Wire Harness, Moisture Sensor).
➔ Otherwise go to step 6.

6. Measure the resistance across the pins of the mating connector.
If a small resistance is measured here, replace this harness (Digital Wire Harness).

7. Measure the resistance across each of the outermost contacts and the center terminal (ground connection).
➔ If a resistance less than infinity is measured, replace this component (Wire Harness, Moisture Sensor).

8. If moisture sensor diagnostic test passes, check the thermistor: Perform Troubleshooting Test #3a.
➔ If the problem persists after replacing the moisture sensor and thermistor, replace the machine control electronics.



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 Posted: Sat Nov 20th, 2010 04:58 am
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mattmag
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OK, thanks for the reply!

After entering diagnostics, I opened the door and I do get a beep. The code looks like "3E" though, not "03". Is that the same thing?

I need to access the electronics it indicates, so what is the proper way to get to the board?

Thanks so much for helping me!

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 Posted: Sat Nov 20th, 2010 05:46 am
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mattmag
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Well I'm reading into this too much I think. When I open the door it beeps and displays "3E", which is NOT "03" so I need to proceed to step 3, not 4. Did that, wet finger test again causes no reaction. I'm heading to step 7 now...

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 Posted: Sat Nov 20th, 2010 07:14 am
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E3 flashes from the display.
Action: Check that the correct machine control electronics and Console Electronics and Housing are installed.
Do so by removing these components to view the part numbers and
compare them to the part numbers in the Components Table on page 2.
See Accessing & Removing the Electronic Assemblies, page 7.
Replace components if necessary.

Console Electronics and Housing
for White/Platinum Model: GEW9200LW 8519389
for White/Blue Model: GEW9200LQ 8519390
for Bis/Bis Dark Model: GEW9200LT 3979790
Machine Control Electronics 3978918

GEW9200LW0 Parts List & Diagrams



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 Posted: Sun Nov 21st, 2010 12:16 am
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mattmag
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It's fixed!!!

That diagnostic chart is just a little bit confusing... I was about to be led off track with the "03" code, but I took the instructions as correct and since it wasn't "03" I forged ahead. I removed the lower kick panel, and separated the harness for the moisture sensor to test it. As I did, one of the wires that connects to the metal strips inside fell down alongside the plug!

I re-connected the wire to the strip, hooked it all back up and the moisture sensor test passed with flying colors, so it's back in business.

The "3E" that comes up is apparently the code that is displayed for the door switch portion of the routine, but it sure throws you off if you aren't sure about it like I was. Thanks again for the tips here on this site, as in the process I located the tech sheet inside the machine, and felt very confident that I could get it narrowed down. Excellent information here!!


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