Question about DeLonghi DH100P Dehumidifier

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Delonghi DH100P problem

My unit comes up and runs but there is no water come out of pump or Tank, this unit is in my basement which is hot and humid. any idea?

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  • Anonymous Feb 22, 2009

    Unit ices up.Is it a switch causing this to be inop?



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There is an air filter and an inline small water filter. which one needs to be changed?

Posted on Sep 06, 2008

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Try replacing the filter

Posted on Aug 30, 2008


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Posted on Jan 02, 2017

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My Danby DDR606 runs hot. I have the hose direct drain into the water drain in my basement. What is causing it to get hot?

It's probably running continuously.

If so, its either set that way (or for too low humidity) or the unit is undersized for the area / humidity level. Check for sources of humidity that can be controlled otherwise, or add another unit.

Please rate 4 stars if this is helpful. Thanks and good luck!


Aug 18, 2017 | Danby Dehumidifiers

1 Answer

Unit is about 5 years old - 40 pint unit (DN40G). It runs but does not dehumidify (no water in the tank) and humidity in basement is 80%. I wonder if the unit is just too old to work? Do you have any...

There are many reasons why a dehumidifier willnot work or collect water.
Here is a tip that I wrote to help people to figure out what is going wrongwith their dehumidifier

Dehumidifier is running but no water is in bucket


Aug 06, 2011 | DeLonghi Dehumidifiers

1 Answer

I am not getting any water in the collection tank. I cleaned the filter and reset the controls. Humidity in basement is 65% and I set the control to 50 %. Any suggestions? Thanks.

There are 5 basic, but solvable reason for what you described. Please pay particular attention to numbers 1 & 5. Especially, since, yours is a basement application.

1. The humidity extraction level is set to HIGH. Lower it to 32-35%.

2. Air intake filter is dirty or clogged. Turn unit OFF, & Unplug the
Unit, before removing to inspect & clean it, if necessary. If washed,
allow filter to completely dry before reinstalling. DO NOT operate
the unit without the filter.

3. Obstructed air flow. Maintain a minimum of 12 to 18" of clear air
space around the entire unit.

4. Cooling coils are dirty and need to be cleaned. Use warm water & dish washing liquid to
clean the coils. Rinse and wipe dry. Apply a light coating of WD40 to the coils.

5. Ambient air temperature at floor level is between 40 - 60 degrees.
dehumidifiers do not work well between those temperatures
(Unless, you have a Low Temp Unit). This applies mainly to
where the air temperature at floor level is colder than at shoulder
in basement applications. Raising the unit up off the floor,
onto a sturdy table, counter top, etc, that can handle the weight
of the unit, plus a full tank of water, will usually resolve this

If none of the above solves the problem, it may be a case of the compressor needs to be recharged with refrigerant gas or that the humidity condenser sensor has failed. These things usually occur in units that are 5 years old or older. It's rare in a unit younger than that. But, it can happen.

Hope this helps you to troubleshoot & solve the problem.

Jul 06, 2011 | DeLonghi Dehumidifiers

1 Answer

My machine is running but no water is being collected. The model number on my machine says DE N 500 P

Several things can cause your problem:

Dirty or clogged air intake filter. Remove and clean the filter according to the Owner's Manual instructions.

Dirty coolant coils. Clean and dry the coolant coils.

The humidity extraction level is set to high. Lower the level to 35%

Not enough free air space around the unit. Maintain at least 12" of air space around the entire unit.

The ambient air temperature at floor level is to cold (between 40 - 60 degrees F). Raise the unit up off the floor onto something sturdy enough to handle the weight (including a full tank of water) and the vibration during operation. This happens frequently in basement applications.

Depending on the age of the unit, the refrigeration coolant may need to be recharged.

The humidity sensor has failed and needs to be replaced.

All of the above are where you start troubleshooting and hopefully solving the problem.

Jun 01, 2011 | DeLonghi DE500 Dehumidifier

1 Answer

Compressor sounds as if its on, the fan is on, but water is not extrated from the air

If the room air is less than the set air then there is no water in the bucket because there is almost no humidity in the air. If it is winter, there is likely not enough humidity in the air to have water collect in the bucket. A dehumidifier will only pick up humidity out of warm air. If you are running a dehumidifier in your basement in the winter, the room may be damp, but too cold for the dehumidifier to pull out the humidity. Try running the unit in the bathroom after having a hot shower without the bathroom fan on. If working correctly the unit should draw water.

In addition, check to see if the air filter is dirty and/or blocked. Also, the room temperature might be too low, (below 15.5 C/ 60F) and finally, check to make sure that there is no obstruction to the unit, that might be causing poor airflow circulation.

I hope this helps you to troubleshoot and solve the problem.

Apr 28, 2011 | DeLonghi DE500P Dehumidifier

2 Answers

Where to go for spare parts for dh250r need circuit board for compressor

Glenn, here is a link to Delonghi Parts and Accessories website. You can order parts there if you have the Part Number. Or you can call Delonghi at 800-865-6330.

Hope this helps you find the part your need.

Apr 28, 2011 | DeLonghi DH100P Dehumidifier

1 Answer

I have Delonghi DE500P dehumidifier was running but doesn't pump water. how can i fix it.


First, make sure the humidistat isn't set too high by adjusting it to the lowest humidity setting and running it again. Next, test the dehumidifier by placing it in a closed bathroom with a hot shower running. If you don't see water collecting in the unit after several minutes, turn the unit off and clean all dehumidifier filters and coils. If, after adjusting the settings and cleaning the unit, you still don't see water collecting, you may have a refrigeration issue. This situation will have to be addressed by a qualified technician.

Good luck

Aug 11, 2010 | DeLonghi DE500P Dehumidifier

1 Answer

Light comes on but dehumidifier does not work (i.e. does not extract water from the air).This is a DEC21 model

Is it running?
If the room tempature is close to 60, the coils may be frozen (completely encased in ice). If this is the case, move it where the water can drain off - about 1 gallon which may NOT run into the drain bucket.
I out mine over the floor drain.
Turn off and it will defost over night.
Only specially made dehumidifers work below a room temo of 60 degrees (the temp of a basement in winter).
Does it need to be running? A digital humidity sensot from Radio Shack is cheap and may tell you the humidity is OK - only 50% or less. In that case your unit won't turn on.

Jan 02, 2010 | DeLonghi Dehumidifiers

1 Answer

Works well but

Yup, they eat energy.

An electric dehumidifier includes a refrigeration cycle that is very similar to a window AC units and refrigerators. They cool the air in the basement to condense and collect water and remove humidity, heat the air as a required consequence of the refrigeration cycle and dump it back to your basement.

Two sources of humidity in basements include warm outside air that naturally cools due to below grade earth contact and water passing from the ground though the floors and walls and evaporating into the basement. Dehumidifiers do most of the work in the summer when higher temperatures outside enable air to hold more water content.

In the winter, cooler outside air contains less moisture by weight eventhough it may be raining and the relative humidity in basement will be less because the air is warmed relative to the outside. The lower moisture content in the winter also absorbs the water passing through the walls and floor.

From an energy perspective, you may want the humidity set NOT below 50%. This will keep humidity below the level mold desires, but prevents the dehumidifier from doing more work and eating more energy than needed. A cheap battery powered temp/humidy meter left in your basement will help. Sources that include the "mold triangle" (temperature, water & food) often separate fact from expensive hype.

If the dehumidifier doesn't keep up, consider adding a moisture barrier to the basement walls and floors such as Dry-lock and floor paints to ****** moisture entry. Moisture barriers act very similar with water as insulation does with heat. They don't eliminate the need for a dehumidifier, but they reduce the work they do and energy they eat.

Oct 02, 2008 | DeLonghi DH40P Dehumidifier

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