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There is a sensor that the clothes have to touch when the drum spins. This sensor measures how wet the clothes are. If you don't have enough of a load in the dryer then the sensor wont detect the dryness. Or it could be a bad sensor or connection or main board.
Dryer has a moisture sensor that detects the clothes are dry so it shuts off earlier. If the clothes are still damp then the dryer vent may be plugged and causing the unit to run hot or not able to fully evacuate the air from the machine. Clean the vent and make sure it's completely free and try again. If it short cycles again and clothes still damp you may have a sensor controller issue.
Hello - Typically error code AD indicates that the Auto Dry option has been selected. Using no heat in any Auto Dry cycle will result in long drying times and/or wet loads at the end of cycle. I would suggest selecting other option or resetting the unit. You may either unplug it or flip the household breaker off for approximately two minutes. Restart unit, select a normal cycle and verify if it will heat. If the dryer does not heat the unit it could possibly have a faulty heating element, blower assembly or a communication problem with the control panel.Contact a professional to move forward accurately.
The Dryness Level allows adjustment of how damp or dry the clothes are at the end of the cycle.
Make sure the correct Cycle has been selected for the type of fabric being dried.
If the correct cycle is selected and the clothes are still coming out too damp, use the Auto Dry Level button (Kenmore) or Dryness Level button to increase the Dryness level.
If the highest Dryness Level setting was selected and the clothes are still damp, the Customer Focused Drying Mode settings that are built into the machine can be adjusted.
Dryers come from the factory set to Drying Mode 1 (default). Drying Modes 2 and 3, include additional drying time. Note: This change will affect ALL Auto Dry cycles.
Machine MUST be in Standby mode before beginning. (Standby mode = Plugged in, Power off)
To select drying modes, momentarily press the Auto Dry Level button (Kenmore) or Dryness Level button (Whirlpool) again. The dryer will beep, and the display will flash and show the next drying mode number.
With the door open and the display flashing the desired drying mode number, press the Start button to save the drying mode and exit diagnostics.
Press the Pause/Cancel key at any time to cancel changes and exit from this mode.
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.
If you use a lot of dryer sheets, it will build up an oily residue on the sensor strips causing a "false" reading. Light sandpaper and alchohol over the strips should clean them well. Another possibility, is if you have a mixed load, ie..towels, socks, jeans , if a sock or something light keeps hitting the strips, the dryer thinks the whole load is dry (it doesn't know there are different thing in there) Try keeping loads similar when using auto dry.
From the techincal document found in the dryer bottom panel
TEST #4a Dryness Level Adjust
NOTE: If the customer is complaining about the clothes being damp and the moisture sensor passes TEST #4 "Moisture Sensor Test- step 3, then the total dry time can be lengthened by changing from a "Lo" for short auto cycle to "Hi" for longer auto cycle.
1. Activate the Diagnostic Test Mode. Press the following button sequence: MORE TIME ~ LESS TIME -+ MORE TIME --+ LESS TIME - all within 5 seconds
1. In diagnostic test mode, press and hold the Auto Dry Level key for 5 seconds. The dryer will beep and the current auto cycle mode will be seen on the display. The factory default setting is "Lo".
1. To select a different auto cycle mode, press the Auto Dry Level key again. The dryer display will flash and show either "Hi" or "Lo"
1. With the display flashing the selected auto cycle mode press the Start key to save the setting and exit diagnostics (the Start key in this mode does not start a drying cycle). The result will be stored in EEPROM of the control board.
SO EASY JUST TOOK ME 3 YEARS TO FIND IT
DO YOU MEAN IT WON'T SHUT OFF? DOES THE TIMER ADVANCE? IF IT STAYS IN THE SAME PLACE, AND YOU ARE ON AN "AUTO DRY" CYCLE, THE TIMER WON'T ADVANCE IF THERE IS A RESTRICTION IN THE EXHAUST.
DISCONNECT THE DRYER EXHAUST FROM THE BACK OF THE DRYER AND TRY ONE LOAD OF LAUNDRY. IF IT WORKS O.K., THERE IS A PROBLEM WITH YOUR DRYER DUCT WORK. HAVE IT CLEANED OUT AND TRY IT AGAIN.
Check your breakers. Mine was doing the same thing, all of the 120v parts of the machine were working. (blower/drum motor/ lights) However the element wasn't coming on. Went to the breaker and found that one side of the 2 pole breaker was tripped. Turned both off and back on. Heater started working again.
When you set the dryer on settings such as normal or permanent press, it engages the various sensors that help the dryer to make the most efficient use of energy. Moisture sensor, heat sensor etc. (THAT IS WHAT TURNS ON YOUR AD SETTING) Normally it selects a time based on factory settings that it believes your load should be dried by. Say 50 minutes at Normal (high heat, normal) Every so often during the cycle, the machine will check the humidity sensor and the other sensors and try to see if the dryer is still on schedule. Sometimes it will determine that more time is needed, occasionally less time. While it calculates, it displays the Ad meaning that the machine is on auto dry. TO TURN OFF AUTO DRY, set it to a time setting instead of a DESCRIPTION setting.