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Old 11-24-2012, 03:41 PM   #1
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Spark from back of Gas Dryer


When I turn the my gas dryer on, I observe a spark coming from the rear of the dryer. This doesn't happen every time but often enough where it is a concern. I happened to be watching one time and the spark occurs right at the point where my flexible dryer vent connects to the wall. I had a technician out to check the dryer and he couldn't find anything, no indication internally of any electrical problems. I have to think it has something to do with the dryer though. The washer is hooked up to the same outlet but I never see any sparking when I turn that on. I replaced the outlet but that didn't solve the problem either. I checked the service panel and everything seems to be in order there also. This particular outlet is on its own circuit, there are no other outlets, lights, etc, that share this circuit. Does the dryer have its own ground wire or ground strap? Could this be the problem if it somehow got loose? Thanks.

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Old 11-24-2012, 04:07 PM   #2
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Spark from back of Gas Dryer


Sparks and gas are not a good combination so I would pursue this. Something might be arcing when the motor comes on?

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Old 11-24-2012, 04:10 PM   #3
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Spark from back of Gas Dryer


Whats the hose made of?
Has anyone used an outlet tester to check to see if it's hooked up correctly and grounded?
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Old 11-24-2012, 04:34 PM   #4
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Spark from back of Gas Dryer


Not trying to create a conspiracy theory here.
Unusual or rare issue ... I blame the aliens!

Is it possible that a small gas leak is there.
Turning on the dryer the electrical connections are setting off a minor gas explosion that is being described as a spark?

Not sure if that theory is possible, if it was leaking and set off, would just continue to burn from gas supplied from leak.
Seems it might be possible, happens rarely and service repair guy could not find it ... let it sit long enough and kaboom goes the spark?

If need be, buy a new dryer, do not die in a flaming house fire over a broken dryer.
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Old 11-24-2012, 08:55 PM   #5
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Spark from back of Gas Dryer


I thought about the gas leak, but it's definitely just a spark. I think there would be flames if it were a gas leak. Like I said, I saw a spark at just the point where the flexible exhaust connects to the wall. There is a scorch mark on the metal where I see it arc.
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Old 11-24-2012, 08:57 PM   #6
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Spark from back of Gas Dryer


Quote:
Originally Posted by sdsester View Post
Sparks and gas are not a good combination so I would pursue this. Something might be arcing when the motor comes on?
As I mentioned, I replaced the outlet, making sure it was hooked up right and grounded.
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Old 11-24-2012, 09:17 PM   #7
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Spark from back of Gas Dryer


This is what bugs me.

"I had a technician out to check the dryer and he couldn't find anything,"

You say is obvious burn marks on the vent.
This can be a serious issue if a gas leak ever did occur.
I am not qualified to give you correct answer, in this case do not want to give bad advice either.

In this situation, I doubt a forum moderator will move your post, but I would suggest re-asking question in the electrical section of diy, and not appliance section.
I think with your issue, would be better answered there.
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Old 11-25-2012, 01:03 AM   #8
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Spark from back of Gas Dryer


Good suggestion, moved to "Electrical" for more varied answers...

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Old 11-25-2012, 08:15 AM   #9
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Spark from back of Gas Dryer


Start by measuring voltage between the dryer vent (at the wall) and ground with the dryer off. Jiggle the vent pipe. Repeat with the dryer on.

Unhook the dryer vent hose from the wall ventl and turn on the dryer. Do you see sparks anywhere else?

Measure voltage between the vent pipe on the wall (nothing attached to it) and ground. (To see if it is the vent pipe and not the dryer that is live causing the spark)

Also, (with the vent hose still disconnected) unplug the dryer and measure resistance between the ground pin of the plug and the other pins. (To check for a ground fault in the dryer)
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Old 11-26-2012, 08:27 PM   #10
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Spark from back of Gas Dryer


Will do, Alanj. Make take a day or 2 but will let you know.

Thanks.
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Old 11-30-2012, 10:48 PM   #11
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Spark from back of Gas Dryer


My guess is that the dryer is not grounded properly, and it uses a high-voltage spark igniter. The spark you're seeing is the voltage from the igniter seeking a path to ground.
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Old 12-01-2012, 04:40 AM   #12
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Spark from back of Gas Dryer


Or you may be observing a static discharge.
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Old 12-01-2012, 09:29 AM   #13
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Spark from back of Gas Dryer


Quote:
Originally Posted by Regatah View Post
I happened to be watching one time and the spark occurs right at the point where my flexible dryer vent connects to the wall.
Can you explain this a little better? The wall connection, is it metal? Is it grounded? Is the flex duct metal? Sounds like a bad neutral connection in the dryer

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