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- > Do-It-Yourself Appliance Repair Help > The Kitchen Appliance Repair Forum > Whirlpool Dishwasher - Thermal Fuse Blow

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Whirlpool Dishwasher - Thermal Fuse Blow  Rate Topic 
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 Posted: Mon Oct 10th, 2005 05:15 am
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edubeau
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Dishonorable Dishwasher in Question = Kenmore (Whirlpool)  665.15769000

First - many thanks to this site for walking me in off the ledge and directing me to replace my THERMAL FUSE

Second - I've now replaced 3 Thermal Fuses !   So my question is - what could be causing the thermal fuse to blow ??     I'm aware of the replacement control board (8269127) from Whirlpool - but the Tech notice on it doesn't match my conditions  (The report talks of blinking indicator lights - my unit goes stone cold once the Thermal Fuse is blown).

Just the facts maam.....

a.  The thermal fuses are blowing after about 20 cycles (!?)    The first thermal fuse took 3 years to give.

b.  They appear to be blowing when the options have been set to "Sani-Rinse" and / or on a "Delayed Start" configuration....   which has resulted in getting the joy of waking up to a dirty dishwasher full of smelly water... yumm

Any insights would be greatly appreciated... I'm hesitant to plunk down $130 for the new board unless I have more assurance it will fix the problem.

Finally - what is a Thermal Cut-off kit  - Whirlpool part #  8193762 ??   I found it on a forum but can't find it at WP ??

Thanks

Ed

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 Posted: Mon Oct 10th, 2005 05:58 am
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Samurai Appliance Repair Man
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Howdy. Are you referring to the thermal cut-off in the control board? If so, are you replacing the associated wiring, too? If not, that's why the thermal cut-off is blowing... if that's the part you're talking about.

The thermal cut-off kit you mentioned comes with new wires and terminals, CLICK HERE.



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 Posted: Tue Oct 11th, 2005 12:06 am
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edubeau
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Thanks for the quick reply.      Yes, it is the Thermal Fuse clipped onto the Control Board.

I confess that for the first 2 fuse replacements I was NOT changing the wiring - but I changed it this time.

Can you provide the fastest of lessons on electic current ??- if the wire was compromised - how could MORE current flow through it?  This naive mind thinks it would make it harder to blow the fuse.

Either way, I've followed your advice and changed the wires (and bought a replacement thermal fuse kit to have at the ready !).

And to recap - I should NOT be looking at replacing the board as outlined in the Whirlpool tech sheet.... right ?

Thanks

Ed

 

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 Posted: Tue Oct 11th, 2005 03:10 am
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Samurai Appliance Repair Man
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edubeau wrote:
if the wire was compromised - how could MORE current flow through it?
It's not that at all. What's happening is the wire terminations loosen up and create a high resistance point. So, there's actually LESS current flowing through it, but the current is generating lots of heat from the loose connection. Loose connections also generate transient spikes on the line, which are famous for taking out safety devices such as thermal cutoffs.

And to recap - I should NOT be looking at replacing the board as outlined in the Whirlpool tech sheet.... right ?
If replacing the thermal cutoff restored proper function, then you're good to go... 'till nexy time! ;)



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 Posted: Wed Oct 12th, 2005 02:30 am
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Fixum
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could by a glimer of a chance have the dishwasher wired into a plun-in with an extention cord?

if not have you checked the wire nuts at the dishwasher main wiring connector to make sure that they are tight?

HUM

 



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 Posted: Mon Nov 28th, 2005 03:51 pm
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dansam5
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Hi all,

I too have experienced a short-lived thermal fuse on my Kithcenaid dishwasher. Only lasted three months. I too did not replace the wires with the new included in the bag. I'll do that for the next one. How important is this thermal fuse anyway? One could obviously bypass this thing. I suspect you'll urge me not to do this.

Thanks...great site.

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 Posted: Mon Nov 28th, 2005 07:55 pm
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Samurai Appliance Repair Man
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dansam5 wrote:
How important is this thermal fuse anyway? One could obviously bypass this thing. I suspect you'll urge me not to do this.
Well, you have a $20 thermal fuse protecting a $120 board. Makes sense to me!



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 Posted: Wed Nov 30th, 2005 02:54 am
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edubeau
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To All :

Take sage advice provided above :  REPLACE THE WIRES as well as the Fuse.

Worked like a charm, my dishes are clean, my wife thinks I'm a genius.

Thanks again.

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