Kenmore gas dryer - Running dryer while empty and it heats up. Add clothes and it cools right down - like moisture sensor working backwards. Wait a few minutes and the process repeats. Thermostats, sensor, resistance cecked out fine, vent clean.

Some dryers have a moisture sensing strip in the drum area of the dryer. If this sensor gets coated with an insulator, like silicon from the backing on carpets, it does not sense moisture. When this happens, the dryer times out and shuts down. This prevents the dryer from running even after the clothes are dry.

Ain't no moisture sensor. This is is not an electronic sensing machine. It uses another method to determine dryness. An orange wire connects to the base of the heating element. The timer motor is driven by power from it in auto dry. The timer motor is VERY slow. Slower than most dryer timer motors.As the clothes get dryer the heat is not needed so the element is turned off by the control thermostat which is mounted next to the skinny white fuse on the blower housing. This allows for the turtle like motor on the timer to advance. Once the clothes get to the point of dryness the heater stays off way longer and the timer motor advances on over to the cool down and carry on over to the end of cycle. So the clothes won't always be dry due to factors like lint buildup in the blower housing, venting to outside and so forth. having said that my mom bought a brand new Kenmore dryer and I set it on 55 minutes timed drying. At the end of that them clothes is still damp. I then set it to auto dry high heat and that usually gets em dry. I think the main probo with this dryer is the thermostat ain't set as high as older models to keep the heat at a moderate temp so that the limits won't blow on models in apts and such. Just a theory.

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

if it still quits heating after a minute or so then its either a weak cycling thermostat or moisture sensor thermistor,both located on the blower housing, or the moisture sensor bars located near the door opening on the dryer,or it could be a high limit thermostat thats bad on the burner tube itself

Yes the moister sensor is at fault

there are 3 reasons for a dryer not doing the job yet running through the motions. 1st, the heat is not being produced and only cool room temp air is circulating. this can be a burned-out electric element or an over-heat sensor, or in0line safety fuse. ( if gas, can be ignitor or gas valve coils).. It could be that the washer is not ringing (spinning) dry the clothes verywell and there is too much moisture stiil in clothes which would double the dry time from 50-60 minutes to 2 hours. 3rd, could be clogged vent line and the hot moist air cannot leave the dryer so the clothes get hot by the moisture stays.

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 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.

do you store clothes on top of it while it's running? If yes take that stuff off of there and NEVER use it for anything i mean anything. I know it makes a good table top but you are killing it by not letting your sensors do there job correctly.Believe this i know from trials.
Good Luck

get some windex and clean the sensor strip located behind the filter ousing similar to this picture. Their might be something on it that is interfering with its moisture sensing ability. Check out my youtube channel about section for a link to a free dervice manual for you model. Thanks

Dan Webster

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

This problem doesn't sound right, but you could have a bad moisture sensor.