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Re: dryer does maintain heat
I need a little help here. Your post.... "Dryer does maintain heat"
With the comment: "igniter glows and flame goes on after rest"
So far everything your desribed is most likely normal operation.
Are you saying that the "Dryer does NOT maintain heat properly?" AND that the flame cycles on and off way too often?
I will send this as a solution however.... if you need more help just reply to this post.
-- If you disconnect the dryer vent ducting and it works normally the ducting is clogged up.
--If it still operates the same with the vent disconnected then the dryer air passages are clogged up with lint. Use a crevice tool and something like a folded over metal coat hanger to clean up the air passages
--This can include the lint filter itself if you use dryer sheets. The filter will appear clean but will not allow airflow due to the dryer fabric sheet particulate build up on the filter. Wash it with vinegar and water then soap and water. Make sure to clean the air passages around the lint filter.
--If after all of the above the dryer is still doing the same thing check the airflow out of the back of the dryer. It should gently push a relaxed hand and wrist away from the vent outlet hole. If it does not and your sure all of the air passages are clean then there is a good possibility that the blower wheel has failed and is spinning on the motor shaft vs being driven at full speed.
Also if you respond and need more help please include all of your model number or confirm that MDE7400AY is the correct model number.
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The glow coil or glow bar heats up and a sensor on the side reacts to the heat and then sends a signal to a gas valve.(solenoid valve) When the gas doesn't ignite when the coil is glowing... here are some reasons.
1. The sensor on the side of the burner assembly isn't working or sending power to the valve.
2. The valve is getting power but not opening.
3. The ignitor is not glowing hot enough to activate the flame sensor.
Usually it is the sensor or the igniter not the valve.
Things that could stop a gas dryer from heating: - glow bar igniter, thermal fuse , coils on the gas valve, gas valve, thermostats, motor heat switch, timer, selector switch, sensor. Problem - Gas flame comes on first few times then quits and igniter keeps cycling on and off but never lets the gas go. Answer ( most common ) - Replace the coils on the Gas Valve.
Problem - No flame, no igniter glowing at all, Answer ( most common ) - Inspect igniter for small burnt spot on dark gray or black part of igniter or check for 110 volts to igniter when dryer should be calling for heat. Thanks. Keep updated for
any more query. You can rate this solution and show your appreciation.
pop the cap on the front of the dryer an turn it on
if you see the igniter glow an the flame comes on wait an see if the flame stays on if it it shuts off like 10 sencds later,you have a block vent
if no glow or flame u got a bad thermal fuse
if it glows ,flame an shuts off like and then comes an goes u have bad coils...
good luck post some feed back thanks
If electric then the thermostat or the heating element has failed. If gas: First thing to check is the ignitor underneath the drum. (You have to open the panel to see it) It should glow shortly after the dryer starts, then the flame starts and the ignitor shuts off. If the ignitor does not glow then it or the thermostat is bad. If the ignitor is glowing but the gas does not light then the flame sensor may have to be replaced. If the gas ignites but does not stay on either the flame sensor or the coils are at fault. See also: http://home.howstuffworks.com/how-to-repair-a-dryer.htm
does the igniter glow white or orange? if it is orange you need to replace it. has to be white hot to ignite. if the igniter is white it could be the coils not opening the gas valve all the time - an intermittent problem.
It sounds like an air flow issue. There is a flame sensor on the side of the flame housing. If the venting is not sucking the flame down the tube it will cycle very quickly and never reach the right temp.
make sure that your vent is not plug up can you go outside your house and feel good air coming out the vent when the dryer is turn on if so the only other things it could be is the coils that sit on the ignotor assmebly or the high limit termistat is not working properly the coils are little black circle coils that sit in the ignitor assmly should have a metal braket across the top of them holding them in you can check resistance on these coils if you have an meter