- Home


Air Conditioners | Dehumidifiers | Dishwashers | Disposals | Dryers | Freezers | Humidifiers | Ice Makers | Microwave Ovens | Ovens, Ranges, Stoves | Refrigerators | Trash Compactors | Washers | Water Filters

FAQs | Contact | Apprenticeship | Parts | Model Number Help | Newsletter | Beer

Find Appliance Parts & Diagrams Here
Enter a model number, part number, type of appliance, brand, or even a part description.

365-day return policy on all parts ordered through this site!


 Moderated by: RegUS_PatOff, BrntToast, appl.tech.29501 Search Our Sites for More Info!
New Topic Reply Printer Friendly
Whirlpool Duet Dryer GGW9200LQ  Rate Topic 
AuthorPost
 Posted: Mon May 5th, 2008 07:06 am
  PM Quote Reply
1st Post
Chesterfoxes
Senior Apprentice Appliantologist
 

Joined: Wed May 3rd, 2006
Location:  
Posts: 45
Flavorite Brew: 
Status: 
Offline
This gas dryer is taking several cylces to dry.  This is set up with a side discharge to solid ducting - two 90's and 14' of smooth-wall stove pipe.  Checked all for obstructions and no problem - flow feels very good.  Ran basic diagnostics on the touch pad and moisture sensor - all test normal.  Exhaust tempurature seems to be running 30 degrees on the low side, although my thermometer isn't that good.  I opened up the kick panel, pulled the wires off to check the thermistor, and my multi-meter came up "Out of limit".  Meter comes to zero when test leads are shorted so I think my meter is OK.  I guess my question is this - if the thermistor was wide open, would the unit even run?  Is there another "high limit" that I'm missing?


Maybe I should go to RadioShack and get one of those indoor/outdoor thermometers with the wire lead and drop that into the exhaust to get a little better precision on the exhaust temperture.

Also, should I check the gas valve coils the next time I've got it open? I've always assumed that the problem with this unit was too much leakage around the drum seals.  However, if that were the case, I would expect the gas valve to stay on until the exhaust at least got up to temperature.   It does seem to hold a specific temperature without a lot of variability.  Maybe I should trust my meter and just get a new thermistor.


Just a little lost,

Thanks

Back To Top PM Quote Reply  

 Posted: Mon May 5th, 2008 09:53 am
  PM Quote Reply
2nd Post
RegUS_PatOff
Fellow, Academy of Sublime Masters of Appliantology


Joined: Sat Sep 24th, 2005
Location: Milwaukee, Wisconsin USA
Posts: 16509
Flavorite Brew: Indian Head. Black & White
Status: 
Offline
At room temperature, the thermistor could read 10,000 - 20,000 OHMS.

Do you have your meter set to read that high ?

Does the dryer show any error codes ?

When checking dryer temperature, use with an EMPTY load, High Heat, Heavy Duty
, Timed Dry.

The temperatures out the back with the vent disconnected could cycle between 130F - 145F or up to 165F

A meat thermometer will work.

 

 

 

Last edited on Mon May 5th, 2008 01:16 pm by RegUS_PatOff



____________________
The new repair forums==> http://appliantology.org
Back To Top PM Quote Reply

 Posted: Mon May 5th, 2008 01:11 pm
  PM Quote Reply
3rd Post
Chesterfoxes
Senior Apprentice Appliantologist
 

Joined: Wed May 3rd, 2006
Location:  
Posts: 45
Flavorite Brew: 
Status: 
Offline
Thanks - I will get a more accurate measure of the exhaust temperature and re-check my ohm meter settings.  I'll probably try to borrow another meter just to be sure.

I'll report back after I've got some new info.

Back To Top PM Quote Reply  

 Posted: Tue May 20th, 2008 01:05 am
  PM Quote Reply
4th Post
Chesterfoxes
Senior Apprentice Appliantologist
 

Joined: Wed May 3rd, 2006
Location:  
Posts: 45
Flavorite Brew: 
Status: 
Offline
Well, finally was able to retest the thermistor and get some temperature data.  Using a different meter I was able to get 11,900 ohms at 70 degrees for the thermistor - this appears to be normal. 

I then tested each heat setting using the timed setting for 20 minutes.  To measure the temperture I drilled a 1/4-inch hole into the discharge and dropped in a probe from a cheap RadioShack indoor/outdoor thermometer - 160 degrees max.  While the maximum temperature detected for each heat setting appeared correct, the "heat on" temperature was generally a lot less than 10 to 15 degrees below the "heat off" temperature.  For instance, the high temperature "heat on" was only 125 degrees and then shut off at 160.  Likewise, the medium temperature "heat on" was only about 120 degrees and shut off at about 144.

I then threw in a load of wet clothes to test what would happen.  I used timed drying set for 45 minutes at medium temperature.  What I found was that the gas/heat would only run for three minutes at a time.  Accordingly, at the start of the load, the heat was turning off at 106 degrees and coming back on at 97 degrees.  It seems that the gas/heat time was the limiting factor - 3 minutes and then off.  As the load got dryer, the temperatures started to move up.  Is this normal (to shut off after three minutes of heat, regardless of temperature) or is something overheating in the burner and causing it to shut down after a limited time?

Thanks for any insight - I'm running out of ideas!

Back To Top PM Quote Reply

 Posted: Tue May 20th, 2008 01:24 am
  PM Quote Reply
5th Post
RegUS_PatOff
Fellow, Academy of Sublime Masters of Appliantology


Joined: Sat Sep 24th, 2005
Location: Milwaukee, Wisconsin USA
Posts: 16509
Flavorite Brew: Indian Head. Black & White
Status: 
Offline
Chesterfoxes wrote: ...It seems that the gas/heat time was the limiting factor - 3 minutes and then off...
It could be the common gas valve coils intermittent when hot.

click on picture


If you could monitor the voltage on the Blue Wire of the High-Limit Thermostat on the Burnner Funnel, to see if it stays at 120v AC when the gas shuts off, then it's a bad gas valve coil.

GGW9200LQ Wiring Sheet


 

Last edited on Tue May 20th, 2008 01:26 am by RegUS_PatOff



____________________
The new repair forums==> http://appliantology.org
Back To Top PM Quote Reply  

 Posted: Tue May 20th, 2008 11:21 am
  PM Quote Reply
6th Post
Chesterfoxes
Senior Apprentice Appliantologist
 

Joined: Wed May 3rd, 2006
Location:  
Posts: 45
Flavorite Brew: 
Status: 
Offline
Many thanks - I will do as suggested.  Is their anything else I can be checking whilst I have it open?  I could not find any ohm-testing for the burner high-limit thermostat in the job aid.  Also, does the controller limit the burner run time based on duration or is the burner operation strictly a function of exhaust temperature?

If I find that the high-limit thermostat is tripping, is there something else I should check?  Correct LPG orifice?  Pressure?  I'm assuming tripping the high-limit thermostat is not part of normal operation.

Thanks for the suggestion - I'll let you know what I find.

Back To Top PM Quote Reply

 Posted: Tue May 20th, 2008 12:04 pm
  PM Quote Reply
7th Post
RegUS_PatOff
Fellow, Academy of Sublime Masters of Appliantology


Joined: Sat Sep 24th, 2005
Location: Milwaukee, Wisconsin USA
Posts: 16509
Flavorite Brew: Indian Head. Black & White
Status: 
Offline
The Hi-Limit Thermostat is just a switch, not normally tripped.

Burner duration is a temperature function, normally a function of the Controller as the exhaust temperature is sensed by the Thermistor, but you've determined that it does sense and shut off at the right temperature. (if it can reach that temperature in time, before the gas valve coils go bad)

Last edited on Tue May 20th, 2008 12:05 pm by RegUS_PatOff



____________________
The new repair forums==> http://appliantology.org
Back To Top PM Quote Reply  

Current time is 02:32 am Tell a friend about this page... all your other friends are doing it!  
- > Do-It-Yourself Appliance Repair Help > The Laundry Appliance Repair Forum > Whirlpool Duet Dryer GGW9200LQ Top



Find Appliance Parts & Diagrams Here
Enter a model number, part number, type of appliance, brand, or even a part description.

365-day return policy on all parts ordered through this site!

FAQs | Contact | Apprenticeship | Parts | Model Number Help | Newsletter | Beer

Your Sometimes-Lucid Host:
- Home
"If I can't help you fix your appliance and make you 100% satisfied, I will come to your home and slice open my belly, spilling my steaming entrails onto your floor."


UltraBB 1.17 Copyright © 2007-2008 Data 1 Systems
Page processed in 0.1662 seconds (50% database + 50% PHP). 26 queries executed.

Web Analytics