Did you punch out (or cut) the plug that the hose connects to? If not, its blocking the water from draining to the hose.
Please rate 4 stars if this is helpful. Thanks and good luck!
Hey Darwin,,,, By dehumidifier.. Do you mean air conditioner.. if so, the issue is more than likely you are low on freon.. have it charged and you should be fine.. If this does not fix the problem, it could be the compressor, the pressure switch or the fuse..