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Todd Maveus
Todd Maveus Posted on Aug 31, 2012
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Maytag dryer moisture sensor not working

Dryer heats and runs through cycle but red moisture light always reads "less". Cycle runs through so fast that clothes do not dry fully. I have to restart dryer two or three times to fully dry a load. Is there a way to test the moisture sensor? If I need to replace a part is it just the sensor or are there other parts associated to moisture readings? Thanks for the help.

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2 Related Answers

Anonymous

  • 6784 Answers
  • Posted on Jun 03, 2009

SOURCE: not heating properly, many cycles to dry loads

Check the following to address this issue--


Note: Normal drying time for a dryer is about 45 minutes (some may take up to an hour).

1. Venting
Make sure the dryer vent hose, as well as the rest of the vent duct, is not clogged.

Unless regular maintenance is performed, chances are there is a lot of lint accumulated inside the dryer. This might affect the drying time and could be a fire hazard. Make sure to have your dryer cleaned regularly. Because this might involve taking most of the dryer apart, it is recommended to have a qualified appliance repairman perform this task.

2. Thermostat
There are a couple of cycling thermostats inside the dryer. If one of them breaks down, it might affect the dryer's performance. Replace the defective thermostat.

3. Heating element
A heating element might only be partially burned out, in which case it would still work but will take longer time to dry the clothes. Replace the element if found defective.

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Anonymous

  • 525 Answers
  • Posted on Aug 24, 2009

SOURCE: The dryer stops heating before the clothes are dry.

Maytag gas dryer MDG7600aww, (Model number corrected). Below is a link, courtesy of www.repairclinic.com showing the parts breakdown and disassembly procedures.
http://www.repairclinic.com/Dryer-Gas-Maytag-Style-Appliance-Diagram

This link shows the most likely cause of your issue.
http://www.repairclinic.com/SSPartDetail.aspx?s=t-mdg7600aww-%3d%3di3479&PartID=3479

This link shows the next likely cause of your issue. Remove the front panel and inspect the sensor bar which is located at the 4 o'clock level on the drum bulkhead, ( see the first link for location). Ascertain that 2 wires are connected to it and that black sensor bar is not cracked or broken.

This link will offer more assistance if the above 2 items check good.
http://www.repairclinic.com/0088_8_1.asp#Subtitle_2
http://www.repairclinic.com/SSPartDetail.aspx?s=t-mdg7500aww-%3d%3di516693&PartID=516693

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I have Samsung gas dryer model DV410. no heat, replaced two thermal fuse and hi low limit. Now it only works with timed cycle mode. the rest mode, it runs only for least the 5 minutes and shut off.
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Check the thermal cut off, the cycling and the hi limit thermostats.
For continuity or OHMS. If no ohms or resistance they need replacement.

In some dryer's the control panel relies on a thermistor rather than a CYCLING thermostat to regulate the drum's air temperature by monitoring the component's resistance changes; resistance goes down as temperature increases and up when temperature decreases. Once the drum's air temperature reaches a certain level required to dry clothes, the control panel shuts off the heater. The panel will turn the heater on again and begin another heating cycle when the thermistor indicates that more heat is needed to keep the air temperature constant inside the drum 9 this is why in some cases the dryer will operate at lower cycles like gentle or low heat but not at higher settings?)

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
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Read more :http://www.ehow.com/info_12203962_check-dryer-thermistor.htmlGOD IS So GOOD !!!! AND THAT'S WHY MY ADVICE IS FREE
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In some dryer's the control panel relies on a thermistor rather than a CYCLING thermostat to regulate the drum's air temperature by monitoring the component's resistance changes; resistance goes down as temperature increases and up when temperature decreases. Once the drum's air temperature reaches a certain level required to dry clothes, the control panel shuts off the heater. The panel will turn the heater on again and begin another heating cycle when the thermistor indicates that more heat is needed to keep the air temperature constant inside the drum

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

Read more :http://www.ehow.com/info_12203962_check-dryer-thermistor.html
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In some dryer's the control panel relies on a thermistor rather than a CYCLING thermostat to regulate the drum's air temperature by monitoring the component's resistance changes; resistance goes down as temperature increases and up when temperature decreases. Once the drum's air temperature reaches a certain level required to dry clothes, the control panel shuts off the heater. The panel will turn the heater on again and begin another heating cycle when the thermistor indicates that more heat is needed to keep the air temperature constant inside the drum

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

Read more :http://www.ehow.com/info_12203962_check-dryer-thermistor.htmlGOD IS So GOOD !!!! AND THAT'S WHY MY ADVICE IS FREE
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Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

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I have a maytag gas dryer mdg3000aww. the dryer stopped drying completely (clothes still slightly damp at end of cycle no matter what dryness level selected) then it stopped working entirely. I replaced...
this should help. Tim:

http://www.applianceaid.com/thermo.html
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Warning! To avoid personal injury or even death, always disconnect your appliance from its power source--that is, unplug it or break the connection at the circuit breaker or fuse box--before you do any troubleshooting or repair work on your appliance. Also, because some components may have sharp edges, use caution while working on your appliance.

Below is a link that will help you with parts and diagnostic procedures that are specifically tuned to your manufacturers data plate information.
http://www.repairclinic.com/0088_8_1.asp#Level1_18
If your dryer seems to run forever, it could be because of a clogged vent or internal ductwork. Your dryer may have an automatic cycle that turns off the dryer when the clothes are dry. It does this with a special thermostat or moisture-sensing system.

Normally, this is what happens during an automatic cycle:

  • The thermostat tells the dryer to heat until the interior of the dryer reaches a pre-set temperature--say 135 degrees.

  • When the dryer reaches the pre-set temperature, the thermostat tells the timer to begin advancing. (If there's a moisture sensor, the timer advances only if the moisture content of the clothing is low enough.)

  • The timer advances until the interior cools, then the thermostat tells the timer to stop advancing, and tells the dryer to start heating again.

    This cycle continues until the clothes are dry. But…if the vent is clogged, the dryer may never reach the proper operating temperature, so it doesn't send the signal to the timer and the dryer continues to run indefinitely, even if the clothes are completely dry. To fix the problem, clean the vent and/or internal ductwork
If my assistance helped resolve this issue, please show your appreciation by rating how effective my advice was in resolving this issue.
Thank you,
Dave E. (Illeagle)
"Your satisfaction is my personal reward"
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I have Samsung gas dryer model DV410. no heat, replaced two thermal fuse and hi low limit. Now it only works with timed cycle mode. the rest mode, it runs only for least the 5 minutes and shut off.

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