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Kenmore dryer heater turns on unless unplugged
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Topic: Kenmore dryer heater turns on unless unplugged (Read 11636 times)
treyster
VIP Member
Member Since: Feb 2013
Posts: 12
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Kenmore dryer heater turns on unless unplugged
«
on:
February 23, 2013, 12:34:30 PM »
I replaced the thermal fuse in my Kenmore electric dryer last week (went bad). It burned out again yesterday so I threw a new one in today. Just noticed that as soon as I plug in the dryer, the heating element starts up without the dryer being started. The thermal fuse must be a symptom and not the problem.
What would cause the heater to start without the dryer being turned on? Clothes are now searing hot. Not a problem with the vent. Obviously it's unplugged right now.
«
Last Edit: February 23, 2013, 12:37:00 PM by treyster
»
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bigbuck
Technician
Member Since: Jan 2011
Posts: 956
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over 30 years repairing appliance
Re: Kenmore dryer heater turns on unless unplugged
«
Reply #1 on:
February 23, 2013, 02:00:03 PM »
Heating element shorted to ground, thats what overheated causing thermal fuse to go.
Do you have a model number?
Sent from my MB865 using Tapatalk 2
«
Last Edit: February 23, 2013, 02:01:09 PM by bigbuck
»
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treyster
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Member Since: Feb 2013
Posts: 12
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Re: Kenmore dryer heater turns on unless unplugged
«
Reply #2 on:
February 23, 2013, 02:20:32 PM »
Looks like model 110 62812100 according to the tag. Do you think if the heating element went bad it would start heating as soon as I plug it in?
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bigbuck
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Member Since: Jan 2011
Posts: 956
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over 30 years repairing appliance
Re: Kenmore dryer heater turns on unless unplugged
«
Reply #3 on:
February 23, 2013, 02:51:31 PM »
Sounds like its shorted to heater casing, yes replace it.
Sent from my MB865 using Tapatalk 2
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bigbuck
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Member Since: Jan 2011
Posts: 956
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over 30 years repairing appliance
Re: Kenmore dryer heater turns on unless unplugged
«
Reply #4 on:
February 23, 2013, 03:25:22 PM »
Your dryer uses heating element part #
279838
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treyster
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Member Since: Feb 2013
Posts: 12
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Re: Kenmore dryer heater turns on unless unplugged
«
Reply #5 on:
February 23, 2013, 04:14:19 PM »
The heating element was so hot it cracked the alum mounting plate, but it still has continuity. Obviously it needs replaced. Could the thermostat have caused this?
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domain
Technician
Member Since: Nov 2012
Posts: 2610
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Re: Kenmore dryer heater turns on unless unplugged
«
Reply #6 on:
February 23, 2013, 04:18:28 PM »
Check continuity between either terminals and the heater CASING. Let us know.
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bigbuck
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Member Since: Jan 2011
Posts: 956
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over 30 years repairing appliance
Re: Kenmore dryer heater turns on unless unplugged
«
Reply #7 on:
February 23, 2013, 04:20:29 PM »
Replace it, or you will be buying a lot of thermal fuses.
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tgoods
TechnicianModerator
Member Since: Jul 2010
Posts: 1902
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Re: Kenmore dryer heater turns on unless unplugged
«
Reply #8 on:
February 23, 2013, 04:30:57 PM »
From the looks of that element, I'd say you also have restricted venting. Make sure the dryer is not pushed against the wall and crushing the vent. If you have a long vent run, brush it out. The Linteater,
RLE202
, works great for this.
«
Last Edit: February 23, 2013, 04:31:29 PM by tgoods
»
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domain
Technician
Member Since: Nov 2012
Posts: 2610
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Re: Kenmore dryer heater turns on unless unplugged
«
Reply #9 on:
February 23, 2013, 04:38:20 PM »
NEVER hurts to check the vent, but I believe that sagging is going to be caused by the heater being energized when not actually running.... No air flow.
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treyster
VIP Member
Member Since: Feb 2013
Posts: 12
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Re: Kenmore dryer heater turns on unless unplugged
«
Reply #10 on:
February 23, 2013, 04:50:14 PM »
The heating element is working like it should believe it or not. No continuity between the case and ANY of the terminals. Complete continuity between all the terminals at room temperature. No broken wire and wire is not touching the case. Is the heating element supposed to have power going to it when the dryer is off but plugged in? I haven't probed it yet but that's my guess as to what's happening.
«
Last Edit: February 23, 2013, 04:51:44 PM by treyster
»
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dab147315
Technician
Member Since: Oct 2010
Posts: 5177
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Re: Kenmore dryer heater turns on unless unplugged
«
Reply #11 on:
February 23, 2013, 05:06:55 PM »
Check this first attachment down loaded and check vent and good idea to replace thermostat on heater too .Than attach vent to dryer and i use a test light on the cycling thermostat to make sure its cycling on the right thermostat.Of croase you leave back panel off for this test.Also can use a voltmeter.
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AJ
Technician
Administrator
Member Since: Jun 2007
Posts: 10983
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Re: Kenmore dryer heater turns on unless unplugged
«
Reply #12 on:
February 23, 2013, 05:37:44 PM »
There is a switch on the motor that closes once the motor is running. Once the switch is closed it lets voltage go to the heating element.
When the motor stops running the switch should open and kill the power to the heating element.
This motor switch could be bad if you have voltage to the heating element when the dryer motor is not running.
You can not replace just the switch as the switch only come with a new motor. The switch could be stuck if it has heavy lint build up.
It could also be stuck if the contacts are pitted. Some people can clean the switches/contact to make them work again, but I find this is often a temporary fix and sooner or later the motor needs to be replaced.
Your dryer uses motor part #
279827
Here is a video you may find helpful too.
Dryer Motor Help Video
Let us know what you find or if you have any other questions.
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dab147315
Technician
Member Since: Oct 2010
Posts: 5177
Country:
Kenmore dryer heater turns on unless unplugged
«
Reply #13 on:
February 23, 2013, 05:59:25 PM »
All these answers are right and all of them are in are brains when we are diagnosing this problem.
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dab147315
Technician
Member Since: Oct 2010
Posts: 5177
Country:
Kenmore dryer heater turns on unless unplugged
«
Reply #14 on:
February 23, 2013, 06:00:57 PM »
Lets us no what happens.
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jumptrout51
Technician
Member Since: Nov 2007
Posts: 1879
Country:
Re: Kenmore dryer heater turns on unless unplugged
«
Reply #15 on:
February 23, 2013, 06:32:49 PM »
AJ is correct.
Your centrifugal switch on the motor is most likely stuck in the closed position.
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Take a Kid fishing.
treyster
VIP Member
Member Since: Feb 2013
Posts: 12
Country:
Re: Kenmore dryer heater turns on unless unplugged
«
Reply #16 on:
February 24, 2013, 08:34:20 AM »
AJ, thanks for the video link and thanks everyone for your help! I'll tear into it today (after the Daytona 500 of course), I'll post what I find. Sounds like I'll be weighing the merits of fixing a 13 yr old dryer or buying a new one (wife wants new one).
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Bailey
Technician
Member Since: Dec 2011
Posts: 809
Country:
Re: Kenmore dryer heater turns on unless unplugged
«
Reply #17 on:
February 24, 2013, 08:35:21 AM »
Don't they always!
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jumptrout51
Technician
Member Since: Nov 2007
Posts: 1879
Country:
Re: Kenmore dryer heater turns on unless unplugged
«
Reply #18 on:
February 24, 2013, 08:52:53 AM »
You have the best dryer made.
Repair it.
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dab147315
Technician
Member Since: Oct 2010
Posts: 5177
Country:
Re: Kenmore dryer heater turns on unless unplugged
«
Reply #19 on:
February 24, 2013, 09:02:43 AM »
If you do buy new one stay with lint filter on top and no touch tone pads.Best dryer on market.
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Kenmore dryer heater turns on unless unplugged