Model #WGD6400SW1 WHIRLPOOL Residential Dryer

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Question and Answers


Heat is on very short time. WGD6400SW1 Whirlpool Residential dryer


Thank you for your inquiry on your Whirlpool Dryer, Model: WGD6400SW1. From reviewing the details on your model, the burner is not supposed to stay on continuously, once the dryer reaches the normal operating temperature the burner is supposed to cycle off. The dryer has an operating thermostat that opens and breaks the electrical circuit to the gas valve assembly and the burner shuts off. Once the temperature drops the operating/control thermostat will close and complete the circuit to the gas valve assembly to cause the glow bar igniter to begin glowing until the flame switch opens which causes the solenoid on the gas valve to energize and open the gas valve which will ignite from the glow bar igniter. If you find the glow bar igniter glowing and then fading back off without any burner ignition would indicate weak solenoid coils on the gas valve and they both will need to be replaced.Now, if you have a restriction in the venting system it can cause the flame to shut off prematurely and it will cause the flame to stay off longer than normally. This will cause your clothes to take a lot longer to dry. For testing purposes only, disconnect the vent hose from the back of the dryer and then dry load while watching the burner operation. NOTE: DO NOT open door to while running. If the burner stays on longer and the clothes dry faster, this would confirm a restriction in the venting system.

Safety Warning: Before beginning the repair, disconnect the direct power supply to the dryer to prevent the risk of injury or any electrical shock.

If you don’t feel comfortable or confident in this repair, then you can have it repaired at home by a sears technician. I have the included a link to the website: Sears Home Services or call 1-800-469-4663.


I hope this answered your question. Thank you for contacting, and have yourself a wonderful day. 

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Gerry 93 -
Sears Technician
May 26, 2015

No heat. WGD6400SW1 Whirlpool Residential dryer


Thank you for choosing SearsPartsDirect. I will be more than happy to assist you with your Whirlpool dryer.

From the information you have provided above, I can understand the frustration of having your dryer malfunction, after researching model number WGD6400SW1. This device senses the wetness of the exhaust air to tell the dryer when to turn the heater on and off. If this goes bad it typically gives the exact symptoms that you are having. You need to check the thermistor to make sure it is working correctly.

Click here.,

I hope you found this information useful. Again thank you for choosing Sears, we appreciate your business, have a great day.

*Safety disclaimer before you try and repair the unit make sure the power supply is disconnected. There may be sharp parts to the unit that can cause injury to you if not careful. If you don’t not feel comfortable checking this yourself you can request a technician by visiting*

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Benny23 -
Sears Technician
May 23, 2015

Whirlpool gas dryer front door clips or latch? \ wgd6400sw1


Hello, glad to help.  Thank You for choosing Sears We, at Sears, value your service.
I am sorry and do understand your frustration when having questions on the dryer.
Glad to help out.  I’m looking at your Whirlpool Dryer model number, wgd6400sw1.

Need to change 2 parts so that  you will once again have a tight snug on the dryer.

Door strike #
Door Catch#8572982

Thank you for your understanding in this matter and I hope we can help you with your future questions and repairs.  Thank you for choosing Sears and using our

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Larry Jr -
Sears Technician
August 11, 2014

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