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- > Do-It-Yourself Appliance Repair Help > The Laundry Appliance Repair Forum > Annual Thermal Fuse Replacement KitchenAid Gas Dryer KGYE677BWH2

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Annual Thermal Fuse Replacement KitchenAid Gas Dryer KGYE677BWH2  Rate Topic 
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 Posted: Fri Apr 17th, 2009 05:28 pm
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jpeisker
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I'm mystified about having to replace the thermal fuse on this Whirlpool gas dryer, seems like about once per year.  The dryer works fine and the vent is short and clean, so there is good airflow.  It never seems to overheat and the gas valve cycles, so the temp control thermostat is working.  It really works fine, yet I have replaced an open thermal switch several times over the years with no other issues.

Everything I've read suggests that if the thermal fuse opens, you have another problem and it is the last line of defense.  Well, I can't find anything else wrong and the dryer works fine, so why is this bugger taking an annual vacation?  Is it just a quirky characteristic of this dryer (marginal design) that is well-known to professional service people, or is there something more insidious going on?

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 Posted: Fri Apr 17th, 2009 06:57 pm
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RegUS_PatOff
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Make sure you're using the correct Thermal Fuse... there a  few different temperatures...


The Operating Thermostat may be "sticking"

 
also:

Vent should be rigid metal.

Short lengths of flexible metal may be OK, if not crimped when moving the Dryer into place.

NO plastic

NO PVC

NO screws

Foil Duct Tape is OK.

With an empty load, Timed Dry, High Heat,
the vent temperature should cycle somewhere between 135F and 160F

Last edited on Sun Apr 19th, 2009 06:38 pm by RegUS_PatOff



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 Posted: Fri Apr 17th, 2009 07:40 pm
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jpeisker
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Reg,

Thanks for the reply and a good reminder about dryer vent safety (using the correct material).

I am using the exact specified part for the thermal switch, so that's not an issue here.

Is a "sticking" thermostat a common problem or even an occasional reality? 

I will check vent temps to make sure they are in spec; I suppose if it runs higher than normal, that operating thermostat needs replacing.

Jim

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 Posted: Fri Apr 17th, 2009 07:53 pm
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RegUS_PatOff
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jpeisker wrote: ...Is a "sticking" thermostat a common problem or even an occasional reality?  ..
maybe only "once per year" ...

it may not fail during the temperature test..



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 Posted: Sat Apr 18th, 2009 08:06 am
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grey one



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Are you using it 3 loads a week or 14 loads a week. Very often gas dryers run a little hotter than electric. Exhaust is short and clean and I presume the flap on the outside moves to allow lots of air flow.

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 Posted: Sat Apr 18th, 2009 12:26 pm
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nickfixit
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You should always replace the operating thermostat when a thermal fuse fails. I was told this in person by whirlpool engineering staff. I do this on my service calls, and I don't get return visits.

Nick



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 Posted: Sat Apr 18th, 2009 10:07 pm
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Samurai Appliance Repair Man
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nickfixit wrote: You should always replace the operating thermostat when a thermal fuse fails. I was told this in person by whirlpool engineering staff. I do this on my service calls, and I don't get return visits.

Nick

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