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Duet dryer Whirlpool

Hi,
My dryer starts and heat, but then after 5 minutes, the heat cuts out and keep rolling. I have read on your site it might be Hi-Limit Thermostat  or the hermal Cut-Out (TCO). Can you please tell me the difference between them. Thank you very Much.
Cam In Montreal

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If thew TCO fails, the dryer will not heat at all. The TCO acts as a fuse and cannot be reset. It must be replaced. Please refer to the following link for some thorough advice on how to diagnose a dryer problems:

http://www.fixya.com/support/r385301-thorough_dryer_advice

If you still have questions, please post back and let me know. I suspect you probably have an operating thermostat problem, or high limit thermostat problem.

Posted on Jun 16, 2008

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All these components COMBINED, should cost less than $100. If you fix it yourself, you will avoid the additional cost for labor.

If the dryer isn't blowing ANY air at all, but the drum still turns, you may have a bad blower fan assembly inside the dryer. Or, the blower fan assembly may be clogged.

If your dryer performance has been failing (i.e., clothes taking longer to dry), it may be for a reason. You need to ask yourself when the last time you cleaned the dryer ventilation. If you can't remember, or if it has never been done, this can contribute to the dryer failing. All dryers need proper air flow in order to dry properly. If the ducting becomes clogged, the heating circuits will actually overheat and eventually fail. This usually results in the Thermal Cut-Out (TCO) blowing or the Heating Element failing or BOTH. When these components fail, they must be replaced. Remove the dryer hose from the back of the dryer and inspect it thoroughly from where it leaves the dryer to where it exits your home. It should be clear with no kinks or clogs. If your vent line runs under a crawl space make sure it is suspended above the ground and has no sags where lint could collect. RULE OF THUMB: The SHORTER and STRAIGHTER the vent duct, the BETTER. After you inspect the vent ducting, turn the dryer on and make sure you have forceful air flow coming form the dryer. This will prove that your blower fan is working properly or not. Since you stated that your dryer is not currently heating, the air will be cold, but you should still have some force behind it. If the air flow is weak, you need to clean the duct work INSIDE the dryer. It is important to keep a dryer checked routinely. I recommend once per season (that's 4 times per year). Dryers are the cause of many house fires. These fires are due to lint accumulations inside the unit catching on fire. A little preventive maintenance can prevent significant problems in the future.

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