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- > Do-It-Yourself Appliance Repair Help > The Laundry Appliance Repair Forum > Whirlpool Duet gas dryer model # GGW9250PW0, s/n MS0303753 no heat

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Whirlpool Duet gas dryer model # GGW9250PW0, s/n MS0303753 no heat  Rating:  Rating
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 Posted: Mon Nov 22nd, 2010 12:11 am
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ddunk1946
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This pair had been doing SO well! My last visit was late 2007,
Whirlpool Duet Gas Dryer Mod# GGW9250PW0, S/N MS0303753 - no heat ...

So, here's the deal per the m'em sahib; clothes not drying but everything else appears normal.
 
Hoping it was something simple like last time (Thermal Fuse) I replaced the TF (I bought two at the time!). Nah, that didn't do it. Actually, it fired as normal and finished drying a load of clothes. But the next load was cold, no heat.
 
I pulled the file and diags from my last effort here and observed...
 
The dryer enters diagnostic mode with no errors, door switch, moisture sensor all work, that is, they passed their respective tests.
The drum spins (no apparent motor problem) and the control panel starts and stops the unit like it should.
 
Termistor resistance is 8.9 +/- @ 75 degrees, which seems to be in line.
 
Gas valve test gave resistance readings of:
1402 ohms across terminals 1 & 2 (specs call for 1365 +/- 25)
569 ohms across terminals 1 & 3 (specs call for 560 +/- 25)
1295 ohms across terminals 4 & 5 (specs call for 1220 +/- 25)
 
Are these within allowable tolerances?
 
What I see when I watch it try to start with the toe panel removed is the drum starts to turn, the ignitor glows, the gas enters and ignites and burns for perhaps 20-30 seconds then shuts off. Everything else continues, i.e., the drum still turns, the display still looks normal, just not gas/heat. I will come back and repeat the sequence but the gas never stays on for very long.
 
What am I missing?
 

 



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Dunkel Kinetics
P.O. Box 16537
Sugar Land, Texas 77496
dadunkel@att.net
donn@sugarlandrealestate.com
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 Posted: Mon Nov 22nd, 2010 01:00 am
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RegUS_PatOff
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when the Flames turns OFF, does the Ignitor glow again right away ?

Do you have the Cabinet assembled (for correct air-flow/thermal devices)



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 Posted: Mon Nov 22nd, 2010 02:50 am
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ddunk1946
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No, it doesn't come on right away. Seems to try again after a minute or two. I didn't time it, but it's not right back trying again. I didn't let it grind away to see how many times or how often it would try, but I can if it would help.

Well, the toe panel is off and the top is off. Other than that, all is together.

Another thing I noticed is that, when the flames come on, there seems to be a tiny jet of flame that comes out from under the ignitor cap, if you will, and is aimed at the high limit thermostat. It seems that within a few seconds of exposure, the gas turns off.

I may be overthinking that, as I don't know what normal operation looks like when the flame is on...



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Donn Dunkel
Dunkel Kinetics
P.O. Box 16537
Sugar Land, Texas 77496
dadunkel@att.net
donn@sugarlandrealestate.com
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 Posted: Mon Nov 22nd, 2010 03:55 am
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ddunk1946
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Well, this is embarrassing. I thought I'd try to start it and time the ignitor attempts when I realized I did NOT have the cabinet back to gether.

I had the blower cover and lint screen out. I replaced both of those and ran a cycle and it's been running and drying with a steady flame for over 10 minutes. Keeping my fingers crossed.

But, when I replaced the thermal fuse, it was all together when it finished a load and then went cold again. Maybe the removal and replacement of the various sensors to inspect, gently clean and test helped a bit?

Sometime later...well, false alarm. It dried the sheets, but seems like it was on about 20 minutes (my wife like the timed dry) and when I checked it less than 10 minutes later, it had shut off, but the sheets were dry. She pulled them out and turned them inside out (fitted king sheets) and put them back in to finish drying.

This time, the ignitor came on, but there is a loud click, no gas, and the ignitor turns off. I timed the ignitor and it seems to try every minute or so, but no gas to ignite.

Tried it on 'normal' mode, but the same; ignitor attempts but no gas.



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Donn Dunkel
Dunkel Kinetics
P.O. Box 16537
Sugar Land, Texas 77496
dadunkel@att.net
donn@sugarlandrealestate.com
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 Posted: Mon Nov 22nd, 2010 04:12 am
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RegUS_PatOff
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click on picture



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 Posted: Mon Nov 22nd, 2010 05:30 am
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ddunk1946
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Yep, that's kind of what it seems. I was looking at the video of them earlier. Will give it a shot, thanks!



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Donn Dunkel
Dunkel Kinetics
P.O. Box 16537
Sugar Land, Texas 77496
dadunkel@att.net
donn@sugarlandrealestate.com
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 Posted: Mon Nov 29th, 2010 05:04 pm
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ddunk1946
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Back in town after the holiday...sorry I didn't report this sooner. I went ahead and bought a bag (ok, a box!) of crucial parts for the dryer but replaced the gas valve solenoids first. That's all it took and the thing is humming again.

Many thanks!!!

I 'caught' the Mrs. stopping the dryer near the end of a timed cycle by hitting the pause button, pulling out a garment to fold, close the door and hit the start button again. Sez she does that ll the time. That CAN'T be good for the ignitor and/or gas valve, can it? Not to mention the computer/control board?

It's also amazing to me how much HE detergent we buy, considering we never approach the 120-170 loads each container supposedly washes (there's only the 2 of us; the cats wash themselves), but I'm not having much luck convincing someone who's done laundry for 40+ years to modify their behavior... :D



____________________
Donn Dunkel
Dunkel Kinetics
P.O. Box 16537
Sugar Land, Texas 77496
dadunkel@att.net
donn@sugarlandrealestate.com
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