Dryer not working. Clothes wetter than when they went in?

One basic reason is your washer could NOT be spinning most of the water out, therefore your clothes are wetter than they should be, thus taking longer to dry:-)

condensation from under the dryer

If it is brand new. It should have full factory warranty. I would called the place that you bought it from and have them fix it.

It really sounds like your washing machine is not spinning the clothes out enough. Have they been wetter than usual lately? The dryer could just be struggling to keep up with the heavier / wetter load as there is no reason for it to create moisture on it's own.

This could be the clothes are coming out of the washer wetter than normal, or poor air flow. 80 min in a little long but a lot depends on the wetness and amount of clothes. If the vent system is clear then I would try smaller loads and checking the washer.
Eric

I am having the same problem on a WD9900A. The wash cycle works great. Spins fast and clothes are completely rung out. Dryer cycle heats up well. Fluffs and heats cloths. At some point during dry cycle water is injected on clothes and they end up sopping wet; much wetter than after wash. Filter is clear. Outlet pipe clear and functions well. Possible problem with dryer timer? Or washer timing kicking back on?

A conventional dryer uses 240 volts to heat air, which passes through the tumbling laundry, picking up moisture, which is then vented to the building's exterior.
Your dryer uses 120 volts to warm air, which picks up moisture from the tumbling clothes, which then passes through a vent pipe in the back right corner of the dryer where a cold water spray causes the moisture to condense, run to the drain, and then is pumped out of the washer/dryer combo. There is no exterior vent to the outside of the building. Drying with your dryer will take at least twice as long as with a standard dryer. You can wash large loads, but can only dry small loads, and the clothes will not be as dry when dryer is finished as they will be with a standard dryer.
All that said, to make sure your dryer is performing as well as it can, you might like to take the back cover off and check the elbow at the very left bottom corner (when viewed from behind) to make sure nothing is obstructing the flow of water under the tub to the drain.

make sure your drum is turning,open it quickly and see if it's turning,also make sure you have good ventilation behind the dryer,let me know what you find-mike

We found that we needed to turn down the water inlet to almost off and then the dryer worked when we had the same problem.
Remember to turn it back up again before the next wash

Have suffered the same problem. Suggest you remove back (after turning off electrical supply) and look at the water outlet pipe - you may have a sock or two in this - remember to reattach outlet and secure in position.