Dehumidifer shuts off when tank is only 1/4 filled

Normally dehumidifiers collect the water that they have pulled from the air in the tank. Therfore no hose is required. You just have to empty the tank when full. Most models have a float switch which shuts off the machine when the tank is full. Hoses to get rid of water are normally only fitted on industrial machines.

sensor in the tray stuck

If it is not running because it thinks the bucket is full even when it isn't, the problem is that the float is broken or jammed. A replacement is no longer available, but you can find the small switch and tape it so it always stays on. It won't shut off when the bucket is full, but it will run. This assumes all the other panel lights come on properly - you didn't provide much detail about what works and what doesn't work.

Hi,

The tank may be full. Your dehumidifier has a safety device that turns off the dehumidifier when the water tank is full. Usually the tank itself either presses against a switch or there's a device connected to the tank that triggers a switch when the tank is in place and full.

If you've emptied the tank and the unit doesn't run, inspect the place where the tank rests to see if there's a switch or mechanism that's not being activated. You may be able to turn it on with a simple flick of your finger.

Good luck.

hello. If your dehumidifier doesn't seem to run often but the humidity in the room is high, try adjusting the humidistat control on the dehumidifier to a dryer setting. If the dehumidifier seems to run constantly, but there's little or no water in the container, there may be a problem in the refrigeration system. Try cleaning the unit. If that doesn't work, you can't repair the refrigeration system yourself, you need a qualified appliance repair technician to do that.

float swithch in water tank. if using hose check for plug between tank and hose allowing tank to fill up

Make sure conditions are not too cold or too dry already.
Is the compressor running?
Set the unit to the continuous run setting or the dryest setting
compressor should start.
If compressor runs but the evaporator doesn't get cold the freon has
leaked out.
If compressor doesn't run no matter what you do the board may be bad.
Also the fan must blow air.

Check the point on the tank (Bucket) where the hose connects to. Make sure there is no obstruction at the outlet of the bucket to the hose connection. Next make sure the hose has no kinks or no loops that may trap air to the drain. If necessary for a long run to the place of drainage raise the dehumidifier to a higher level for better drainage.

What I found was that the evaporator coil has steel endplates that flake rust off into the resevoir. This clogs and destroys the pump.