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Whirlpool Duet Electric Drier PF Code Blows Breaker


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26 replies to this topic

#1 pelletman

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Posted 14 October 2008 - 09:33 AM

Good Evening Everyone,

I have a Whirlpool Duet Electric dryer that my wife informed me stopped working today. When I got home I reset the 30 amp breaker, came up and saw the PF code on the control, hit cancel and tried to start the drier, and it blew the breaker again. Did it one more time, same result. Unstacked the drier and took the top off, removed the back, the drier has a ton of lint in it, some of it looking pretty charred. We are cleaning it now and I will try to determine where the leak is as far as the lint goes, but can anyone tell me where to start to look for the cause of the short? I do have an ohm meter and am fairly handy... Thanks for your help!

OK, I just did the diagnostic testing, it went through all the primary tests OK. When I did the additional tests: Open dryer door the dryer DID NOT beep and nothing changed in the display, I can't locate a sensing keypad, just an LED light, close the door, hit start, it blows the breaker. Do I have a problem with the door switch shorting? Bad motor? Any way I can check this stuff? Thanks~!

I just checked the switch with an ohm meter, it checks fine. I do get continuity between the white wire and the blue wire even when I separate them at the plug, in other words, the switch is out of the equation, and it test between the white and the blue, and I get continuity. Is this normal or maybe a board problem?

Dave

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#2 NCSU_laundry_tech

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Posted 14 October 2008 - 11:09 AM

turn it to no heat and see if it trips the breaker. problem could be in the heat circuit like the element shorted to ground

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#3 pelletman

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Posted 14 October 2008 - 11:21 AM

I just did that prior to reading your post.  It still popped the breaker.  ANy other ideas?  I appreciate the help...


#4 MrFixit246

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Posted 14 October 2008 - 02:00 PM

You said some of the lint was charred. Take a close look at any wiring that may have been melted in the charred area.

If it is still tripping the breaker when the heating circuit is not energized then follow the motor circuit. Pull out the Multimeter and check parts of the circuit at a time disconnecting wiring and verify resistance to ground. Dead shorts can be difficult to find within wiring harnesses.

Good Luck

MrFixit


#5 pelletman

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Posted 14 October 2008 - 02:03 PM

Thanks for the reply!   I don't think the charred lint has much to do with a shorted wire, but I'll check.  I think it is charred because of the heating element...  I would think the answer I am looking for is why does the door not beep when it is opened in the test mode..


#6 Budget Appliance Repair

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Posted 14 October 2008 - 10:28 PM

Check the wires going to the door switch, make sure they haven't rubbed on the drum anywhere and shorted, (I've seen many times when the clips that hold the wires away from the drum fall off, the wires can rub against the drum and wear thru).

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#7 pelletman

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Posted 14 October 2008 - 10:51 PM

I have unplugged the wires totally and I still get the blown breaker..


#8 RegUS_PatOff

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Posted 14 October 2008 - 11:13 PM

[user=1279]pelletman[/user] wrote:

I have unplugged the wires totally and I still get the blown breaker..

right away, or does the Motor turn at all, hum, ect ?

Try it with the Motor un-plugged.

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#9 pelletman

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Posted 14 October 2008 - 11:16 PM

it blows the breaker right away and I think it may hum a bit but I'm not totally sure.  Bad motor has crossed my mind though.  But then I thought, why would that cause the door not to beep when doing the tests?  Thanks!


#10 RegUS_PatOff

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Posted 14 October 2008 - 11:19 PM

Does the Drum Light work  (only with the Door open) ?

Have you tried hitting Start with the Door open ?

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#11 pelletman

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Posted 14 October 2008 - 11:28 PM

My wife tells me the light is burnt out, so I can't tell.  Hitting start with the door open blows the breaker.  Thanks for the reply!


#12 RegUS_PatOff

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Posted 14 October 2008 - 11:41 PM

Try it with the Motor un-plugged ...
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#13 pelletman

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Posted 15 October 2008 - 12:01 AM

Thanks!  Is  there a trick to getting the plug off?  I have the front lower panel off and the plug didn't pull off easily.   Shouldn't the switch stop power from getting to the motor if the door is open?  In any event, my next response will be after work as I have to get outta here.  Thanks for the help!


#14 NCSU_laundry_tech

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Posted 15 October 2008 - 04:19 AM

"Shouldn't the switch stop power from getting to the motor if the door is open? "

no. the switch supplies the neutral.

there are two tabs that have to lifted up with a small screwdriver. you can really see the one on the bottom

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#15 RegUS_PatOff

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Posted 15 October 2008 - 04:42 AM

[user=1279]pelletman[/user] wrote:

... Shouldn't the switch stop power from getting to the motor if the door is open? ...

NCSU_laundry_tech is correct... The Door Switch disconnects the Neutral to the Motor.

The Motor should stop with the Door open, but the L1 & L2 lines are still connected and could be shorting to the Frame.

pelletman wrote:

 why does the door not beep when it is opened in the test mode..

pelletman wrote:

My wife tells me the light is burnt out, so I can't tell...   Hitting start with the door open blows the breaker. 

Maybe the Door Switch doesn't work correctly (separate problem), that's why the Light won't turn on, and the Dryer tries to start with the Door open ??

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#16 pelletman

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Posted 15 October 2008 - 04:58 AM

Thanks for the reply!  I checked the switch according to the manual and it does seem to be working correctly.  I also left the switch unplugged and it still blew the breaker, and I don't think any of the wiring is even touching the frame, but I could chase the brown wire further down the line.  Anyone know where that goes?  Thanks!  Dave


#17 RegUS_PatOff

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Posted 15 October 2008 - 05:17 AM

It could be a bad Breaker.

or take a look at the Controller Board to see if anything is charred

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#18 pelletman

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Posted 15 October 2008 - 06:50 AM

I'm kind of doubting the bad breaker theory.  Remember, the door doesn't chime in test mode when open, so I'm kind of thinking that wouldn't have to do with the breaker.  Correct me if I am mistaken please.  thanks!

Do you mean the control board on the left side of the machine where the door switch hooks in?


#19 RegUS_PatOff

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Posted 15 October 2008 - 06:54 AM

as in my prior post, maybe the Door Switch has nothing to do with this new problem and hasn't been working for a long time... (no Drum Light, etc)
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#20 pelletman

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Posted 15 October 2008 - 07:08 AM

That makes sense.  I'll check the motor when I get home





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