Question about Dryers

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I've an intermittent problem with our LG DLE8377wm electric dryer not starting after pressing the start button. On occassion, we'll press the start button and the drum will move a tiny bit and then stop. Nothing else then happens. On other occassions, press the start button and the dryer will function as normal. Troublshooting steps so far: 1. checked the exhaust vents for lint -clear and fine. 2. cleared the filter of any lint - clean and fine 3. Checked the power supply - fine 4. Unplugged/replugged the dryer i.e. reboot 5. Wiped-down drying sensors I'm out of troubleshooting ideas. Any thoughts?

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  • andrew440 May 28, 2011

    Hi Kevin,
    Wouldn't I get an error message in the LCD display if it were the thermostat? Why would the thermostat cause an intermittent problem?

  • andrew440 May 28, 2011

    My dryer does not have an independent switch. It appears to be a part of an overall control panel.

  • andrew440 May 29, 2011

    Further to my earlier dryer issues, the dryer will also continue tumbling with no heat after a cycle has finished. There's also no way to stop the tumbling. The dryer will not respond to either the on/off button or pulling the plug from the wall (i.e. it doesn't reboot itself, put plug back-in and it continues tumbling with no heat)
    Is this a control panel or thermostat issue?

  • andrew440 May 30, 2011

    Yes, Unplugging and pluggiing back in the dryer continues to tumble BUT no heat. A puzzle, if it's a stuck button, why would it not heat also?

  • andrew440 May 30, 2011

    Thanks for your reply....I have the service manual and run a few of the diagnostic tests...everything appears fine from these tests...I'm increasingly of the view that my issue is with the brains of the dryer ie PCB/controller.

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  • Dryers Master
  • 2,605 Answers

Hello, welcome to FixYa.

I'll start by saying your post indicates it is obviously a LG dryer. Thank you for posting the complete model number, this way I can speak directly about possible remedies instead of generalizing.


You mentioned this happens intermittently, and if you unplug the unit and plug it in again the drum continues to turn correct ?


I've come across this issue only several times and in one case it was simply an issue of the start button snagging on the control panel, thus constantly sending a "start" signal to the pcb.

Sometimes this will manifest in the dryer shutting down immediately after start up, other times never shutting off.

The only way to be sure this isn't happening is through a process of checking each time one pushes start the button completely returns to the released "open" position...usually by way of gently rubbing your finger across the button.

There is a possibility the control itself is the culprit as I've seen on the other occasion. The actually key on-board the control is getting stuck in the start position, but that is something I've only seen on one occasion.

I'd start by monitoring the stuck key possibility before moving forward, if you can definitively rule that out we can move forward...likely the circuit board part #6871EL1013C...there are actually 2 separate boards behind the console, the one I listed intigrates the start button.

Good luck and thanks for choosing FixYa.

Regards,

Macmarkus :)

Posted on May 29, 2011

  • Mark MacDonald
    Mark MacDonald May 30, 2011

    Thank you for replying Andrew.



    I live out west, so I just saw your reply and it's still early (ish) here.



    I'll address your last post in two parts as I think I need to clarify this a bit. The first part..."Unplugging and plugging back in the dryer continues to tumble BUT no heat" ...when this was done, was it immediately following a dry cycle ?



    If so this may explain why the heat does not come on again, since the thermostat may be satisfied from the cycle just completing. If this is the case, next time allow 10-15 mins before plugging it back in and monitor the operation, heat ? no heat ? etc.



    The second part "A puzzle, if it's a stuck button, why would it not heat also?"...it is a puzzle yes, unusual to say the least.



    The other possibility I was thinking is the centrifugal switch in the motor. If it became "stuck" forward hypothetically as long as the unit has power it would continue to run, since this ould keep the "run" windings in the circuit.



    I can send you a service manual which will guide you through a test program ( it's basic...while pushing MORE time and LESS time push power button, diagnostic should be entered....though the manual explains what to look for) and outline how to test the motor contacts etc. You will need to post an email for me to do so though, but it will only be visible to me.



    Let me know and I'll watch for your reply. Good luck.



    Regards,



    Macmarkus :)

  • Mark MacDonald
    Mark MacDonald May 30, 2011

    Andrew,



    I would have to go along with that in the event you've run several diagnostic and do not receive an error code nor can simulate the problem I'd lean towards the PCB as well.



    That is the part number I provided you with in my initial post by the way. It is the control on the left as I guess you would know since the service manual has a parts catalog at the back.



    For the record though it is #6871EL1013C and available at "repairclinic.com" or "searspartsdirect.com" to name just a couple.



    Let me know how you make out or keep me posted on the results if changing out the PCB. Good luck.



    Regards,



    Macmarkus :)

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  • Dryers Master
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Hello & Welcome to FixYa

If you have already tried cleaning the vent then the problem is with the Thermostat. When the thermostat goes bad it cannot be reset and replacing it is recommended repair.It is located on the blower wheel housing inside the rear panel to the exhaust duct. You can test it for continuity before replacing, if thermostat reads continuity then the problem is with the start switch that is bad needs replacement. Please get back to me if you have any other questions.


Kevin

Posted on May 28, 2011

  • Kevin White
    Kevin White May 28, 2011

    Sorry I never received your response....you are right there might or might not have been error message....but if you have already checked it for continuity then yes replace the control panel

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  • Master
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Start switch is going bad, Tim:

http://www.appliancepartspros.com/Appliance-Parts/?keyword=dryer+start+switch

http://www.partsdr.com/Appliances/Dryer-40.cfm?PageNum_GetProducts=12

Posted on May 28, 2011

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