Question about Maytag Atlantis MDE7400AY Electric Dryer

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Dryer not heating properly...when nothing in dryer, sensor says clothes are damp..i rubbed sensor and closed door & turned on dryer and sensor said clothes are wet..remember nothing is in dryer..does sensor control heat temp?? i replaced breaker with ne one and still not heating properly..almost like it's stuck in low heat mode..

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  • timothy_rasc Nov 09, 2010

    The dryer is not cutting off pre-maturely..the dryer is not heating up to proper temp. Sensor is clean..It started working fine and then it was like the heat mode was in low heat only..

  • timothy_rasc Nov 12, 2010

    ordered and replaced the control thermostst..still just super low heat only..could heat element be "partially" out?? possibly the thermal fuse?? i also thought about the temp switch itself..thanks for your professional opinions..

  • timothy_rasc Nov 12, 2010

    i replaced the breaker 1st thing before i contacted you..i replaced the female 4 wire plug and installed a 3 wire plug..i was told to put the black wire in the middle and the white on right and solid copper(which i believe is ground) on the left..might it be wired wrong??..i always thought the solid copper(or possibly ground) should be in the center..??..

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  • Maytag Master
  • 8,220 Answers

There is a capacitor on the dryness control board that is trying to build up a charge, but when wet clothes create a short from one of them bars to the other, this charge is released to the frame of the dryer, therefore discharging the capacitor. As long as the capacitor charge is low, the control knows the clothes are wet. As the clothes become dryer, they short the bars fewer and fewer times. Once the capacitor charge builds to a certain level, the control knows the clothes are mostly dry, and it advances the program to the final timed portion, usually less than 20 minutes, some of which is a cool down portion to reduce wrinkling. If your dryer is shutting off after only 10 minutes, that means the control capacitor is never getting discharged. This can be due to a few different reasons: 1. Sensing bar wire is disconnected or broken; 2. Load is not large enough (remember the bars must be contacted repeatedly); 3. Bars are "coated" by fabric softener build up and need to be cleaned with Windex or 409. 4. Defective control board. 5. Airflow is restricted and moisture can't escape the drum. 6. Corrosion built-up on sensing board connection.(yank out the board and clean the contacts that sometimes is all it takes) Address the airflow condition and load size. Clean the sensor bars and make sure the wires are all connected securely.

Slopefront dryer tip and manual

Posted on Nov 09, 2010

  • 1 more comment 
  • Dan Webster
    Dan Webster Nov 09, 2010

    I suspect your control thermostat is bad.
    It mounts on the blower housing

  • Dan Webster
    Dan Webster Nov 09, 2010

    This thermostat has 4 wires. 2 big wires and 2 smaller wires. The 2 big wires carry the current that goes into the element. The 2 small wires come from the dryer timer. They operate a small heater inside the thermostat. When it gets heated up it shuts down faster for knits and permanent press cycles. Yours has probably failed. Many have.

  • Dan Webster
    Dan Webster Nov 12, 2010

    If the control is new and all components check ok then you may have a 30 amp 2 pole circuit breaker going bad.

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The dryer does not pass 6 min mark and does not shut off. How would I test a humidity sensor? Thank you for help.


A dryer moisture sensor can stop working without notice, until you notice your clothes being over dried or still wet at the end of the cycle. It is a good practice to test the dryer moisture sensor periodically. There are two types of moisture-detecting sensors for dryers. Once you understand how they work you will see how to test each one.
1. Sensor BarThese sensors contain digits that protrude outwardly. They work on an electrical current and the moisture from the clothing.
The first step to test is to place completely dry clothes in the dryer and turn on the dryer; it should run for a few moments and then shut down right away.
Secondly, place damp clothes into the dryer, turn on the dryer and watch the timer. As the clothes begin to dry the timer will move and shut off.
2. ThermostatThe timer is regulated by the thermostat. The thermostat rests in a closed position. To test this type of moisture sensor, place damp clothes in the dryer. Watch the timer; as the clothes begin to dry, the thermostat should open and the timer will move forward ,eventually shutting off.



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If it has dampness sensor strips inside the machine they may be coated with dryer sheet wax or some other mess. Clean them with windex and retry. As the clothes rub against these sensors the dampness causes the dryness board to keep the machine a going. if no dampness is detected the dryer shuts down. Supposely to save power.

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If your dryer has electronic sensors like this:
themobilian_2661.jpg
They might have a coating builtup on them preventing them from feeling the wet clothes.As the wet clothes tumble in the dryer they rub up against these sensor strips. As long a wetness is there the capacitor is dicharged on the controls upstairs and it continues to dry them wet clothes. If junk gets on them sensors no wetness will e felt by them sensors. It is a simple as that. The dryer thinks the clothes is dry because no dampness is being detected so is shuts down thinking all is propah. Get some windex and scrub them sensors good so dampness can be sensed by the two sensors once more and party on!

Jul 23, 2011 | Dryers

1 Answer

The sensor on my dryer is not moving off the sensing over to wet, damp, dry or done. the dryer is heating but the sensor display does not seem to be moving. Model # wed6200sw1


Hi,
In some cases this can happen, I have found by cleaning the sensor located inside the drum area with a rag and water or rubbing alcohol this will remove the residue from dryer sheet and should detect your clothes better. Over time the residue can build a barrier can cause this to happen. Normally this is a simple and quick fix.
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Dryer pauses several times and takes 6 hours or more to dry it does not heat.


so it is drying clothes but is taking forever:

http://www.applianceaid.com/dryertip.html

http://www.partselect.com/dryer+wont-dry-clothes+repair.htm

so the dryer is not heating:

http://www.partselect.com/dryer+dryer-wont-heat+repair.htm

these should fix the problem Good Luck Tim

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Easy fix: Look inside the drum below where the filter goes in. You will see two metal strips. They sense the wetness. Now get this: the dryer sheets rub against them and a thin wax buildup on them prevents the controls from properly determining wetness. The control has no clue the clothes are still damp and thinks everything is kosher; so it advances to the end. Solution. Clean the stuff off of the sensors so that they can sense the true wetness once again.

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There may be.Look inside the drum. The dampness sensor looks like two metal strips a few inches long. Try to clean them with a cloth soaked in rubbing alcohol. Dryer sheets can leave a residue on them that causes them to read wrong. Good luck.

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1 Answer

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