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Whirlpool dryer model WGD5900SW0 heats sometimes

dryer gas heat

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3 replies to this topic

#1 Shal

Shal

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Posted 14 November 2011 - 03:16 AM

Mostly it doesn't heat.

I've checked the thermistor and thermostat behind the back panel, and of course there's continuity (because sometimes it does heat).

The igniter always glows for a minute, even when it fails to flame-on.

When it fails to light, the normal "click" is accompanied by a rattling type of noise, sounds like a solenoid not pulling in to me.

It seems to follow the "Roger Rabbit rule" for lighting -- only when it's funny. Such as when I have it all pulled apart to try and diagnose it.

Sounds like I should invest in a new set of coils, at the minimum. My question is whether I should go for the whole gas valve assembly -- is it probable that the failure is at least partly a mechanical one (wear, friction, rust, whatever) in the valve rather than solely a coil weakness. Is there an inspection or diagnostic that would answer that (short of buying only coils, then eating their cost when it turns out I needed the whole assembly).

Secondary question: since the dryer is 10 years old, should I replace the igniter while I'm at it, just because they do age. What is the expected lifetime of an igniter?

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#2 RegUS_PatOff

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Posted 14 November 2011 - 04:09 AM

... igniter always glows for a minute, even when it fails to flame-on.
... "click" is accompanied by a rattling

http://www.repaircli...sp?R=154&N=3479

 

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#3 Samurai Appliance Repair Man

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Posted 14 November 2011 - 08:51 AM

Yep, sounds like anudda case of bad gas valve coils. Very common repair. Easy and inexpensive, too.

#4 Shal

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Posted 14 November 2011 - 02:40 PM

Thank you sensei and Host!

Since experience tells you that trouble with the mechanical parts of the valve assembly is unlikely, I will proceed with coils only.

Arigatō





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