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Whirlpool dryer won't heat. I checked the vent, changed the thermal fuse, changed the heating element and the high limit thermostat. Any idea?

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  • 26 Answers

Might not help you much as I dont know your model, but are you sure it is spinniing, and do the clothes feel warm at all after running? Also, I am assuming this is electric with no pilot light, correct?

Posted on May 18, 2017

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Posted on Jan 02, 2017

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canbruce75
  • 1776 Answers

SOURCE: maytag dryer model #mde6657byw wont heat replaced

Check the switch mounted on the motor. Two of the terminals are for the heater element operation. Other causes could be a faulty heat selector switch or timer. These components can be tested using a multimeter or ohmmeter and checking for continuity. A lack of continuity indicates a faulty switch. These are some items to consider. Hope this helped and best wishes.

Posted on Aug 31, 2009

  • 2 Answers

SOURCE: Thermal cut-off blows and high limit thermostat is

in this case we put the lower temp thermostat in the oven at 170 degrees till it was hot and measured with ohm meter and it was open. After it cooled down some it went back to being a short. Now with this part in the dryer and the new high temp thermostat
and it blew shortly after being turned on. A possiblity is that there is a short by passing the 150 degree thermostat and the element keeps being on and causes the 350 degree thermostate to blow.

Posted on Apr 07, 2010

  • 2180 Answers

SOURCE: electric dryer won"t heat. Kenmore Heavy Duty 70

are you getting power down to the heater?why did you change all those other parts?you need to unplug the dryer,with a meter read out all the parts you changed out again but first make sure you have 240 volts coming to the machine,you can check it at the cord in the back,touch the white to the red,you should have 110 volts or 120,then go from the white to the black and you should have the same thing,if not the problem is in the house,if it's correct make sure you have power coming down to the heater,you could have a bad timer or a burnt wire,when you check the other parts unplug the dryer and whatever part you check at least one wire has to be removed,do this and you'll find your problem,if you did this first you wouldn't of bought all those parts.let me know what you find

Posted on Nov 05, 2010

rickead1
  • 1998 Answers

SOURCE: Amana dryer not heating, replaced Thermal Cut off, High limit thermostat and Thermal Fuse, and new breakers in fuse panel

Hello, Before you replaced all those parts did you check each with a multimeter by performing an ohms test or measuring for continuity? By doing this it would tell if any of the parts that you had replaced were at fault. You can also conduct the same test on the heater as well. when performing any ohms or continuity test make sure the unit is unplugged and that you also unplug the part as well from the wires that are connected to it. I await your reply if you have any other questions. Thank you
Rick

Posted on Dec 02, 2011

hunter19_46m
  • 7482 Answers

SOURCE: whirlpool dryer wont heat

Hi Marlene Hatcher

Here are a few more things to check, you have checked some of these already:
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 inside of the dryer venting system,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 you do not read continuity you will need to replace the coil as it is faulty.
If the heating coil is ok, then:
You can check the thermostat/thermistor/thermal fuse one at a time by removing the two wires and taping them together with electrical tape.
Try to run the dryer, if it runs and heats up then replace the thermal fuse/thermistor/thermostat.
If you have an ohm meter then you can test the thermostat/thermistor/thermal fuse,then you do not have to tape the wires together as described above.
But do not trust the ohm meter all the time, because sometimes it will give a false positive that the fuse is ok when in reality it is faulty.
DO THE FOLLOWING TEST:
To test your thermostat/thermistor/thermal fuse remove the wires from the thermostat/thermistor/thermal fuse and check the fuse/thermostat,thermistor for continuity, if you DO NOT have continuity then replace the thermostat/thermistor/thermal fuse.
DO NOT LEAVE THE WIRES TAPED TOGETHER AFTER THE TEST AS THIS COULD CAUSE A FIRE BECAUSE YOU HAVE REMOVED THE SAFETY.
This test of the thermal fuses,thermistor,thermostat, will show if the thermal fuse,thermostat,thermister is really faulty or not.
Check your blower wheel to make sure it is secure to the shaft and not plugged with lint,socks,etc. If you have to replace your blower wheel it will remove clockwise as looking at the blower wheel. You will have to hold the belt end of the motor with a vise grip pliers or maybe the shaft of the motor has a notch cut on it for a wrench to fit.
If the thermal fuse overheats the dryer will not operate. It's located on the blower housing. It cannot be reset.
You can test it with an Ohm meter or continuity checker, remove both wires from the thermal fuse and put the test probes to each of the ends of the thermal fuse, if no continuity then replace the thermal fuse.
If you do not have a volt/ohm meter then:
DO THE FOLLOWING: Remove the wires and tape them together and try to start the dryer.If the dryer starts then replace the fuse.
A vent clogged with lint can cause it to overheat.
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 a generic element go to the following website:
davesrepair.com/DIYhelp/DIYreplacingWPLdryels.htm
Please take time to rate me
Bud

Posted on Oct 18, 2012

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It could be a number of things, but i would start with these first:
THERMAL FUSE.
The thermal fuse is designed to prevent the dryer from overheating. Once a dryer's thermal fuse has blown, it is no longer of any use. If your dryer's fuse is blown, you will have to replace it. Open up your dryer's cabinet and locate its thermal fuse so that you can test it.

There are also a couple of 'thermostats' that could be the problem:
The 'high limit thermostat' is a safety device mounted on the heating chamber and is designed to prevent the dryer from overheating when the exhaust vent is restricted. A restricted vent will cause the high limit thermostat to trip or activate, interrupting the circuit to the heating element or gas valve. The high limit thermostat is not designed to activate repeatedly like a cycling thermostat and will eventually fail causing a no heat symptom. Disconnect the power to the dryer and check the thermostat for continuity with a multi-meter. If there is no continuity then it will need to be replaced and the restricted vent system corrected as well.
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Cycling thermostats control the temperature inside the dryer drum. They are designed to "cycle" the heating element on and off to maintain the correct amount of heat. Cycling thermostats are normally located on the blower housing or elsewhere in the internal airflow ducting. Over time, the cycling thermostat can become defective. Disconnect the power to the dryer and check the thermostat for continuity with a multi-meter.
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jahn27_43.jpg

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