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Whirlpool Gas Dryer Won't Stay Lit  Rate Topic 
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 Posted: Tue Sep 12th, 2006 03:54 am
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rjones0604
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I have a Whirlpool gas dryer model # LGQ8858JQ1.  The dryer won't stay lit for more than 5 to 7 minutes (as viewed thru the viewport on the front of the dryer).  It lights up ok (flame seen, etc) and hot air flows through the drum (which is turning!) but after a few minutes, the flame dies (drum continues to spin).

I removed the vent line and there is no change in the symptoms.  Based upon other posts on this forum, the most likely culprit(s) are the solenoids.  Do any of you appliance gurus concur with my amateur diagnosis???

Rob Jones

 

 

 

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 Posted: Tue Sep 12th, 2006 04:00 am
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the burner cycles on and off to maintain a temperature of 145-155 on high so seeing them go off after 5-7 minutes with a load of clothes would be normal.

What is the general problem?



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 Posted: Tue Sep 12th, 2006 03:23 pm
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rjones0604
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The problem is the the burner goes OUT after a few minutes - it doesn't cycle off and on.  Once out, it won't re-light until I stop the dryer (by opening the door), wait a few minutes, then start the dryer.  In other words, it acts as if the solenoid for the gas valve's 'stay open' circuit gets tired!

 

Rob

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 Posted: Tue Sep 12th, 2006 04:14 pm
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Pegi
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If the igniter comes on, cycles off, and the burner lights...then the burner goes off....then the igniter cycles on and back off but the burner will not light till you let the dryer sit and cool down, you have weak coils on top of the gas valve...



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 Posted: Tue Sep 12th, 2006 04:21 pm
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rjones0604
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Pegi wrote: If the igniter comes on, cycles off, and the burner lights...then the burner goes off....then the igniter cycles on and back off but the burner will not light till you let the dryer sit and cool down, you have weak coils on top of the gas valve...

I'm not sure if the igniter is coming back on after the flame dies or if nothing is happening once the flame goes out.  Is this something I could see thru the viewport?  And if the igniter is NOT re-igniting, I suppose this means something besides the coils is bad, correct?

Rob

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 Posted: Tue Sep 12th, 2006 04:41 pm
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That is correct, you will need to see just what it is doing or not...



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 Posted: Tue Sep 12th, 2006 05:53 pm
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rjones0604
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Since I'm at work right now and the dryer is at home, I can't check this out until tonight.  When I was troubleshooting the dryer last night, here are a couple of observations:

I would start the dryer and immediately look thru the viewport.  I could see the igniter's glow followed soon by the flame.  I continued watching the dryer for a couple of minutes, saw that the flame is still lit (and the dryer is working properly) and I then left.  I would return every couple of minutes and check the flame.  After several of these checks, I would then see that the flame was out.  No igniter glow was visible at this point, and the dryer is now blowing cold air thru the drum.

How long would the igniter continue to operate once the flame goes out (assuming the igniter and its associated circuitry is good)?.  Should I have seen the igniter glowing periodically once the flame was out?

For the sake of expediency, what (besides the solenoid coils) might be broken here?  I live 45 miles from the closest source of parts, and it might be cheaper for me to simply purchase a new set of coils and whatever else 'might' be broken and simply replace all those parts at one time.

Thanks so much for your help, Pegi.

Rob Jones

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 Posted: Tue Sep 12th, 2006 06:20 pm
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The igniter comes on, the flame switch cycles it off and the gas valve opens....ignition...the burner cycles off on the thermostat....when it calls for heat again, the igniter comes back on, cycles off on the flame switch, burner opens, ignites.....if the igniter is not cycling back on, something is wrong with the igniter or before this igniter, perhaps a flame switch going bad....watch to see if the igniter is cycling on and off to be sure...



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 Posted: Tue Sep 12th, 2006 06:30 pm
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rjones0604
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Pegi wrote: The igniter comes on, the flame switch cycles it off and the gas valve opens....ignition...the burner cycles off on the thermostat....when it calls for heat again, the igniter comes back on, cycles off on the flame switch, burner opens, ignites.....if the igniter is not cycling back on, something is wrong with the igniter or before this igniter, perhaps a flame switch going bad....watch to see if the igniter is cycling on and off to be sure...

How long should the igniter continues to cycle in an attempt to re-light the gas?  Will it only try to re-light the gas a couple of times, after which it gives up?  Or should I see the igniter continuing to cycle until either the gas ignites or power is removed from the circuit (by shutting down the dryer)?

Rob

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 Posted: Tue Sep 12th, 2006 07:36 pm
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Will keep cycling every few minutes till the cows come home or the dryer is turned off, which ever comes first...:)



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 Posted: Tue Sep 12th, 2006 08:23 pm
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rjones0604
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During my observations last night, the igniter was definitely not cycling after the flame died out - as I mentioned in an earlier post, I would watch the flame fireup correctly and blow hot air thru the drum, then walk away.  When I returned several minutes later, the drum is still spinning, and when I look thru the viewport, it is totally dark - no flame, no igniter glow, nothing.  I shutdown the dryer, wait a few minutes, and then I can start it up again.  This cycle is then repeated. 

Based upon those observations, would I be correct in assuming that the coils are NOT the problem, but some component associated with the igniter is more likely to blame?

Rob

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 Posted: Tue Sep 12th, 2006 08:34 pm
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Watch it again this evening, there is a delay between trying to re-light, believe may be up to 5 minutes....if the igniter does not come back on at all after the first time you have something not sending voltage to the gas system...



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 Posted: Tue Sep 12th, 2006 08:41 pm
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rjones0604
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Pegi wrote: Watch it again this evening, there is a delay between trying to re-light, believe may be up to 5 minutes....if the igniter does not come back on at all after the first time you have something not sending voltage to the gas system...

Okie dokie!  I'll let you know what I see.

Thanks again Pegi, for all the help.

Rob

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 Posted: Wed Sep 13th, 2006 12:05 am
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donn
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I have no doubt it is the valve coils --one of the coils is getting hot-- most likely due to high resistance within the coil itself. thats why the dryer will fire when it's first turned on. the longer it runs the hotter the offening coil becomes.  change the coils.



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 Posted: Wed Sep 13th, 2006 05:33 am
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rjones0604
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Ok, I've completed more troubleshooting, and here's the skinny:
  1. Dryer runs fine for approx 8 minutes (plenty of heat, flame visible, etc).
  2. Flame goes out.  After approx. 2 minutes, the igniter glows hot, but no flame.  Igniter goes out.
  3. Wait approx one minute, after which igniter glows again.  Still no flame; igniter goes out.
I watched the 'igniter glows, no flames, igniter goes out' cycle four times, then shutdown the dryer.

Do we still believe it's the coils?  Seems like a valid diagnosis to me...

 

Thanks for the help, everyone.

Rob

 

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 Posted: Wed Sep 13th, 2006 10:28 am
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Definitely the coils, replace both as a kit and you will be drying again.



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 Posted: Wed Sep 13th, 2006 06:48 pm
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Part link for valve coils: http://www.repairclinic.com/referral.asp?R=154&N=3473



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 Posted: Tue Sep 19th, 2006 01:10 pm
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rjones0604
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Replacing the coils fixed the dryer for the weekend, but now it has died AGAIN, but this time it's something new.

Pressing the dryer's START button causes nothing to happen.  Changing the timer (or any other switches) has no effect.  The drum light works and goes out when the door switch is closed, so I know the unit is getting power.  The start button / switch feels 'mushier', but I don't know if that's the problem.  I don't have a schematic, but I do know my way around a multimeter (was a Submarine Sonar Technician back in my Navy days) so I thought I might try jumpering the start switch.

Any other thoughts / ideas?  BTW, this dryer is over 10 years old; maybe I should just bite the bullet and get a new one...

Rob

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 Posted: Tue Sep 19th, 2006 01:30 pm
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rjones0604 wrote:
Replacing the coils fixed the dryer for the weekend, but now it has died AGAIN, but this time it's something new.

Pressing the dryer's START button causes nothing to happen. 


Probably need a new thermal fuse: http://www.repairclinic.com/referral.asp?R=154&N=2986

Verify with your meter.


BTW, this dryer is over 10 years old; maybe I should just bite the bullet and get a new one...

Sure, come get a Staber: http://fixitnow.com/samurais-staber-store/ :vinnie:



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 Posted: Tue Sep 19th, 2006 03:59 pm
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Could be timer, start switch, door switch...need to see where you have lost voltage to the motor...need to replace that belt slide if you have not done so yet..and keep the dryer, those slides burn the belt off...ref. # 53 in this breakdown..



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