Question about Dryers
The following link explains the dryer no heat problem:
Make sure you perform all component checks with the dryer UNPLUGGED. Dangerous voltages are still present inside a dryer even with the unit turned off.
Pay particular attention to the paragraph that discusses proper dryer ventilation. Most dryer heat related problems are attributed to poor ventilation that leads to dryer overheating to the point of failure. If you can't remember the last time you had your ventilation checked or cleaned, I would recommend you do so before replacing any failed components. Failure to do so may result in undesired drying results and premature failure of any components you have replaced.
The most common cause of dryer heat failure is a blown thermal cut-out (TCO). This component acts as a fuse and will blow when an overheat condition occurs. If it is determined that the TCO is bad, it is strongly recommended that you replace the hi-limit thermostat at the same time. Failure to do so may result in premature failure of replaced components. In many cases, the manufacturer sells these parts as a set (more cost effective to purchase this way, too). Both these components are located on the heater box adjacent to the heating element.
To access, remove the lower panel under the dryer door. This is accomplished by inserting a putty knife along the seam at the top of the panel about two inches in from each side. There is a retaining clip that needs to be depressed to release the panel. With the panel removed, the heating circuits are located on the right hand side under the drum. You can view drawings of your dryer at searspartsdirect.com by entering your model number. Use model number "110.66912690" for your search criteria. The heating circuits are listed under the "Bulkhead" heading. The heating element is listed as item number 14. The thermal cut-out is listed as item 47 and the hi-limit thermostat is item 48. NOTE: You can find the TCO and hi-limit thermostat sold as a set at appliancepartspros.com as part number AP3094224 (Your Kenmore dryer is manufactured by Whirlpool). This could save you some $ if one of these components is your problem.
If you have questions along the way, or require additional assistance, please let me know. I hope this helps you.
Posted on Jan 13, 2009
ALWAYS UNPLUG YOUR DRYER BEFORE ATTEMPTING TO DO ANY WORK ON IT.
Check to make sure you are getting full 220 Volt power to the dryer, if you are then:
Check your Wiring
Often the main wiring connection from the house, at the dryer, burns and the connection breaks. If this has happened to your dryer, you need to replace the power cord and the terminal block inside the dryer to which the wire is attached.
Check the Door Switch
If the door switch or the door-switch actuator is defective, the dryer won't work and you need to replace the failed component. The switch is inside the dryer main housing near the door frame. Sometimes you need to raise or open the top or front of the dryer to reach the switch. Check for continuity you should have none with door open, and should have a reading when closed. If not replace the door switch.
Check to make sure you heating problem is not a lint build up in the discharge hose or the dryer,as this condition can cause heater/thermistor problems such as overheating of the heating coil leading to failure of the coil and burnout of the thermostat/thermistor due to overheat.
Remove the back/or front just under the door of the machine and try to locate the air duct going from the blower to the drum. Normally inside/outside the air duct you will find the heating coil and the thermostats/thermistors. Once you have located the heating coil, remove the two wires from it and check the coil with an ohm meter across the two terminals of the coil.
You should read continuity across the terminals, if not you will need to replace the coil as it is faulty.
If the heating coil is ok, then:
You can check the thermostat/thermistor one at a time by removing the two wires and taping them together with electrical tape or with an ohm meter to test the thermostat/thermistor. (Should have/show continuity)
If the coil heats up then replace the thermostat/thermistor.
(Thermal fuse.If it overheats the dryer will not operate. It's located on the blower housing. It cannot be reset. A vent clogged with lint can cause it to overheat. You can test it with an Ohm meter or continuity checker, if no continuity, replace it)
DO NOT LEAVE THE WIRES TAPED TOGETHER AFTER THE TEST.
This could cause a FIRE, as you have removed the safety of overheat from the machine.
Right after replacing a dryer element, always run the dryer on 'air fluff' / 'no heat', and go outside to verify there's plenty of air coming out your vent system.
If the vent's clogged, that new element can burn out very quickly.
For video and pictures on how to replace the element go to the following website:
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Posted on Oct 12, 2010
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Posted on Jan 02, 2017
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