Excessive moisture inside dryer and not drying in timely manner.

Ray makes good sense. Also, check the lint filter and the venting pipes for lint buildup/obstructions. This will prevent the exhaust from leaving the dryer and raise the temp level inside. That causes the elements to stay off longer to avoid excessive heat buildup. And until all the moisture-laden exhaust is successfully vented, the clothes will not dry properly.

A timed drying cycle uses the timer alone to stop the drying cycle. Once it times out like an egg timer a set of contacts open up shutting off the dryer. Or a set of contacts closes to activate a relay which in turn shuts off the power.
Auto dry usually uses a moisture sensor which would do the same thing as the timer. Once it doesnt sense moisture in the load for a predetermined time it in turn triggers a relay which shuts the power off. Some auto dry cycles just use the timer alone and guess-timate the drying time by the selection.
If yours does not use a moisture sensor then most likely it is your timer/cycle switch. There may or may not be a relay involved.
Most dryers have a basic wiring diagram on the inside somewhere on one of the panels which will help.
Since yours is acting up on both cycles Im guessing you have a bad relay or connection to that relay somewhere IF it uses a moisture sensor.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/john_32f4b76dad4781c4

depending on what type of model. there is a moisture sensor inside the dryer. when you use any cycle other than time dry. if it is a small load ( 2 -3 shirts) it may not touch that cycle. making the machine think that things inside are dry and cut the time short. you can try time dryer and see if that helps. to check if moisture sensor on you dryer is working some models will have a test mode to make sure its sensing. try pressing more time button, then less time button back and fourth. all lights should come on. then you can open door. and when put your hand across the moisture sensor usually near the lint trap. you should hear a beep. to indicate that its reading moisture, meaning good..

Try a timed dry cycle instead of an automatic cycle. If that works, then you will need to clean off the moisture detection bars inside the dryer to get the auto cycle to work again. Look for two curved metal bars, about 3/16 inch wide and 4 inches long, about an inch apart, located just inside the front of the dryer, near the right side of the lint filter. (you'll have to stick your head in the dryer drum to see them) Often times, use of dryer sheets will result in a waxy coating forming on these bars, preventing the dryer from detecting the moisture in the clothes. The dryer sees no moisture, it goes into the cool down mode and then stops. Clean the bars off, and you should be back in the laundry business.

If your dryer is STILL heating, but your dryer is showing signs of heavy condensation or longer dry times, you may want to check the dryer interior cabinet and/or the entire run of the exhaust ducting from where it exits your dryer to the point where it leaves your home to ensure you have no kinks, clogs, or excessive bends. As the dryer exhausts, moisture from your clothing is circulated with the warm air. If you have any restrictions in the exhaust system, the moisture will collect inside the ducting and drum. The following link explains many of the common problems that can cause poor drying efficiency and longer dry times:

http://www.fixya.com/support/r3578821-dryer_takes_too_long_to_dry

Before assuming you have a problem with the appliance, check your installation to ensure you are providing the dryer with proper exhaust and air flow. This is the NUMBER ONE cause of poor drying efficiency. A dryer in a clogged state, or having improper air flow, will not dry efficiently and will cause the heating circuits to overheat. Eventually, this can lead to component failures and is the source of many fire hazards. If you do determine you have an internal component problem, the next link can give you some helpful advice on how to troubleshoot a dryer with a no heat problem: http://www.fixya.com/support/r3574266-thorough_dryer_advice http://www.fixya.com/support/r3576548-dryer_runs_but_does_not_heat If you have any questions, please post back and let me know. I hope you find this information helpful.

Vent needs to be cleaned from inside of dryer to where exits out of the house. Excess lint stuck to walls of vent pipe hold in moisture and will not let clothes dry.

You will need to check the dryer venting system for a restriction. If there is a restriciton in the venting system the dryer will get hot but the clothes will stay wet due to the moisture never leaves the dryer. First check the air flow at the vent exit located outside. Verify that there is plenty of airflow. Make sure the vent screen is not plugged. Then remove the screen and visually inspect for excessive lint. Then go inside and check the moisture vent hose behind the dryer. Verify that the vent hose is not kinked or restricted. Then remove the hose and clear out any excessive lint. Then check the vent opening at the back of the dryer for any excessive lint build-up. There is a vent cleaning kit that you can purchase from any home improvement store that you can use to clean out the venting system also. When you are done airflow should be good and clothes should properly dry.

The most likely cause is your home vent is clogged and the dryer has little or no air flow. The water is exiting the dryer with the air since there is little air flow which causes the "water leak". Clean your home vent all the way through and your dryer will probably also need a good cleaning. This should take care of the problem. Please rate this post.

If your electric dryer is developing retaining moisture inside the dryer vent, then you have a clog in the exhaust vent ducting somewhere. The moisture comes from condensation inside the dryer exhaust. As your clothes dry, warm moist air is exhausted out the dryer exhaust vent ducting. If you have any kinks, excessive bends, sags, or excessively long ducting runs, the can create choke points for lint to accumulate. Once the lint accumulates, it begins to collect moisture. As it collects moisture, it will act as a sponge and collect more lint until the dryer becomes completely clogged. Left in a clogged state, the dryer begins to overheat and dries less efficiently. You may notice longer dry times or an excessively hot dryer. Eventually the dryer heating circuits will fail. This can also become a fire hazard if the lint becoimes so backed up that it begins to collect on, or near, the heating element.

If you have not checked the dryer ventilation any time recently, now may be a good time to do so. I recommend checking it about once per season to ensure it is not obstructed. Make sure you are also using the semi-rigid metal type ducting. It resists crushing, kinking, resists heat better, and resists rodent infestation.

NOTE: Mice are notorious for building nests inside dryers. Give them a warm place with bedding material and they will make it a home.

Make sure the exhaust vent is at least 12 inches off the ground. This will deter mice and others pests (like snakes or birds) from entering the dryer exhaust from the outside. If you place a cover on the vent, make sure it is of the louvered variety. Do not use screens. They will collect lint and clog easily.

An easy test to determine if you have an exhaust problem is to remove the dryer vent hose from the back of the dryer. Turn the dryer on and allow it to run. The air leaving the back of the dryer should be forceful and warm. If the air flow is weak, you need to check the dryer interior. If the air flow is normal, reattach hose and run the dryer again. This time, check the exhaust vent where it exits your home. Again, the air flow should be forceful and warm. If not, you have a clog somewhere in the ventilation ducting which will require cleaning.

NOTE: If you are using plactic ducting, get rid of it. It collapses easy, rips and mice will chew right through it.

In addtion, many home owners unknowingly will push the dryer against the wall and crush the hose behind it. This will also clog the vent and make the dryer inefficient. Leave about a 1 foot space behind the dryer for proper ventilation and ensure the vent hose does not get crushed. Semi-rigid hose will prevent this from happening.

If you have any questions, please let me know. I have seen this problem many times. Let me know what you find and if I can be of further assistance. I hope you find this information helpful.

I think your vent has lint in the line between the wall and the outside of your house not allowing the moisture to get out

FIX

1 when the dryer is running go outside and observe the vent to see if hot air is coming out



2 Turn dryer off, disconnect electric from wall

3 pull dryer out from wall

4 take a nut driver or screw and remove the clamp that attaches the flex vent pipe to the wall

4 Also remove the flex pipe from the dryer

5 Inspect inside vent connection inside dryer for any trapped lint

6 inspect inside flex line for any lint

7 Look inside wall vent for lint you can also reach in with your hand to feel for lint

8 If you have a leaf blower or can borrow one(electric is best) from your neighbor put the snout of the blower into the vent going into the wall seal the area between the snout and the vent pipe at the wall ( i use duct tape you can use wash clothes rags etc

9 start blower and blow any lint in the line out through outside THIS WILL CLEAR THE LINT

10 Reattach the flex to the wall vent and dryer , plug in. run a load and you should be back in business

Good Luck