Drain hose not working

I have essentially the same model which is, I must say, very poorly designed. It is still possible and likely that the drain hose is clogged with dust build-up within the tray (which is inside the unit and inaccessible without taking the cover off).

I don't use the drain hose, but was noticing mine was leaking all over the floor without the reservoir being even half full. I tried to clean it a few times but the problem kept coming back. Eventually I took the thing apart and discovered that the tray was so clogged up with dust that both the drain hose line was clogged (even though I don't use it) and the drain into the reservoir. I took it out on the deck and flushed the thing out with a hose.

Next time I won't have to take everything apart. Just remove the cover and you'll see the tray in the front over the reservoir, tucked in under the coil assembly. Just stick a hose in there and blast all the dust out.

I expect that I'll have to do this at least annually (our unit is in the laundry room so it may be clogging up with lint quicker than one placed elsewhere).

Hi, had the same problem. Not a glogging one. I have the model DDR503H. If it is insisting on filling the reservoir, it is because you haven't put the cap you removed from de back of the unit to plug the hose on the tank water exit. You have to first remove the tank and on the roof of this space, you will see the water tank exit where you can screw the cap removed from the back. You place back the tank into the unit and now the water won't have other choice then leak thru the hose. Also. to clean up the filter, I don't need to unscrew the top cover. I just remove the tank and on the roof of the space, there is a grey handle with arrows on it and I just pulled down, it comes out and you can then clean it up.

Hope this help,

Steeve