
It drains out between cycles or, if there is enough humidity, it backs up to the point that it drains out to the bucket. Negative Pressure at the continuous flow exit hole produces an inflow of air that prevents water from dripping out.I'm going to summarize the leading theories that I intend to test through experimentation in the coming weeks:

Some truly enlightening discussion in the answers and comments here. If it were loose the water would drip on the floor. In my current unit, and at least one other one, the hose outlet is outside the cabinet.

Is the hose big enough? Yes, it’s a regular garden hose.Is there a valve that might be failing? No.It's impossible to photograph this without destroying the machine so here is a diagram: If it is sealed with a cap it fills up, and the water rises to the level of the higher outlet that goes to the bucket. I disassembled several of the units, and they all used the same simple system to select hose or bucket: There is drip tray to collect moisture and the tray has two outlets, one higher than the other. Adding some pics and thoughts on answers and comments (I've had Frigidaire, Delonghi, Kenmore). There must be something about the design of all these that is causing this. There is something that causes water to enter the bucket and fill it up under certain circumstances. It does not coil or rise back up at any point. I place the dehumidifier up on blocks and the end of the hose inside a sump pit, so there is about 3 feet of vertical fall through the hose.but sooner or later, weeks or months, it does. The bucket does not immediately start to fill up again. After I empty the bucket water continues to flow. Water does flow from the unit into the drain. I had this problem with 5 machines from 3 manufacturers over the last 15 years. With a hose connected, from time to time, the bucket does fill up with water and then the float switch stops the machine. There is a bucket to collect water, and also an outlet for a hose where the water can flow out so water does not collect in the bucket. The dehumidifiers are white, beige, gray or black plastic and measure between 19 and 24 inches tall, 13 and 15 inches wide, and 9 and 11 inches deep.

#FRIGIDAIRE FAD704DWD IMAGE BUCKET CODE#
The model number and date code are printed on a sticker on the back, front or side of the unit. The brand name and the pint capacity are printed on the front of the dehumidifier.

Recalled model numbers and date codes are listed below. This recall involves 20, 25, 30, 40, 45, 50, 65 and 70-pint dehumidifiers with brand names Danby, De’Longhi, Fedders, Fellini, Frigidaire, GE, Gree, Kenmore, Norpole, Premiere, Seabreeze, SoleusAir and SuperClima. Office of Equal Employment Opportunity and Minority Enterprise.
