Dryer never has worked in auto cycle. It will start running and it indicates that it is sensing then it only runs for approx 5-10 min and says it's dry. The house is brand new will no obstructions in air duct. It has been this way since we bought it in 06'. Any suggestions?
If you open the door of the dryer you can take out the screws for the lint trap assembly, the two metal strips on this are for the sensor . when you take the three screws out from the inside the trap should pull away easily. there should be two wires on the back of this if not there will be two male connector there (on the right side). so if there are not two wire attached you will have to remove the lower metal pannel on the front of the dryer., it is held on by two 1/4" head srews ,one in each corner. with that off you should see two wires hanging there with plastic covering the female end connectors, just feed them up the lint trap an plug them in. that should fix the sensor. but while you have the bottom cover off you should give it a good cleaning with a shop vac. and take the three screws out of the black lint duct(its right in front going from the center down to the right) there is also a small tab you will have to open. the duct fan is behind this give it a good cleaning two and it should work alot better for you. i hope this helps please let me know
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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.
The "Ad" in the display indicates that the dryer is in the Auto Dry cycle.
The dryer will run in the Auto Dry cycle until the moisture sensor bars detect no more moisture in the garments being dried. The machine will then go into a cool down period and then end the cycle.
If the dryer is getting unusually hot, I recommend checking for a restriction in the air flow. Make sure that your lint screen is properly cleaned before starting every cycle. Check the flexible vent hose behind the dryer for a kink or a restriction. Check the exhaust ducting to the outside of the house for lint build-up or a restriction. This may help the dryer perform properly.
Try "timed" cycles. If it shuts off on timed it's not the timer. It's more likely it's not cycling on the thermostat due to an airflow problem like the vent. To rule that out (or in) run ONE load through it with the vent disconnected. If it shuts off you'll know where to look
try cleaning the 2 silver senser bars located inside the dryer drum on the door side with isopropyl alcohol and lint free wipes,these bars sense moisture and control timer speed,and when they get coated with the chemicals in dryer sheets they become coated and can no longer sense the damp clothes (these sensers use capacitance to sense moisture)
Dryers with electronic control and auto dry cycle indeed use moisture sensors for the auto drying to work. The problem is absolutely associated with the failure of the moisture sensors, especially when the timed dry cycle works fine. Either the connection of the sensors to the electronic control is loose or the sensors are covered with thin film that prevents it to sense the proper moisture content of the clothes.
Clean the moisture sensor bars thoroughly and make sure its connections are snug fit. Reseat the connections several times to clean off dirt and corrosion build up in the connectors and terminals. The last thing to look into is the electronic control if all resort fail to address the issue, that is, clean sensor bars and good terminal connections.
Indicate the exact model number of the dryer should you need further or more specific troubleshooting and repair advice.
AD is auto dry you may need to clean the sensor or you may have a fauilty one ...Auto Dry
Loads dried using the Towels, Heavy Duty, Normal, Perm
Press, and Delicates cycles will dry automatically at the
selected temperature to the desired dryness level. The
dryer uses sensing bars to sense the moisture level of
the load as it tumbles through heated air. Auto Dry
cycles save time and energy and protect fabrics. The
estimated drying time will be displayed for about 5
minutes, then the outside of the display will light up in
a circular track to indicate the drying time is automatically
being determined by the sensors. When the load
has reached the selected dryness level, it will continue
to tumble, unheated, during a Cool Down period. This
helps reduce wrinkling and makes items easier to handle
during unloading. The estimated Cool Down time will be
Drying time varies depending on size and dampness of
load and fabric type. If the load is too small or almost
dry, the sensing bars may not detect enough moisture
to continue the cycle and the cycle may end after a few
minutes. Select a Timed Dry setting to dry such loads.
Room temperature and humidity, type of installation and
electrical voltage or gas pressure can also affect drying
For cycle selection turn the knob on the front of the
dryer control panel. The light will illuminate next to
the cycle selected. The following is a brief description
for what cycles should be chosen for certain items and
materials to be dried.
try timed dry cycle instead of the auto-sensing setting. In your drum if you have auto dry such as less dry normal dry and more dry, There is a sensor sometimes in the drum and sometimes in the exhaust right after the blower. If in the drum then your clothes brush by this and if moisture is sensed then it keeps on drying. With your rack the clothes can't touch the sensor so it tells your dial to turn and that items are dry which in fact are not. Try this and see how it does.
On auto dry cycles, the cycle is controlled by moisture sensing bars located on either the rear or front bulkhead, ( visible inside dryer ) if the moisture sensor bars are shorted together (normally by wet clothing) the dryer will continue to run. If the dryer continues to run when the clothes are plenty dry, check and see if there is anything stuck between the sensor bars, (sometimes a metal sequin will cause this) or see if they are damaged. If not, you may have a problem with a timer contact, if the timer advances and stops moving at the same spot each time, I would suspect the timer. If this is an EvenHeat dryer, examine the control board located to the right of the timer in the control panel, for any burned components. Hope this helps.