Question about DeLonghi DE400 Dehumidifier

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Running, but not taking water out of the air

Unit runs, blows out air, i can set the desired humidity level, but does not dispense any water (doesn't work)

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  • DeLonghi Master
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Hi,
There are many reasons for a dehumidifierrunning, but not taking water out of the air - 2_bing.gif to not work or collect water.
Here is a tip that I wrote to help people to figure out what is going wrong with their dehumidifier2_bing.gif.

Dehumidifier is running but no water is in bucket
http://www.fixya.com/support/r4662409-dehumidifier_running_but_no_water_in

heatman101

Posted on May 29, 2010

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Posted on Jan 02, 2017

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IDYLIS 052605 dehumidifier will not shut off when the desired humidity level is reached The machine just keeps running.


well does the unit continue to make water in bucket, the reason i ask is that some units have an air circ fan that runs all the time reguardless of setting this is how its designed

Oct 05, 2014 | Dehumidifiers

Tip

Taking the Confusion Out of Using a Dehumidier


Many consumers are confused about setting the proper levels of humidity on dehumidifier units. And then think something is mechanically wrong with the unit. When in fact, over 70% of the time it operator error. That and a lack of proper routine maintenance are the problem.

The numbers on the LED screen represent the amount of humidity you want to maintain. Not the amount you want to remove. For example: If you set the level at 70%, which is rather high, more than likely the unit may start up momentarily and then shut OFF. That's because the setting is to high. Now, if you set it at 45%, the unit will turn ON and run until either the bucket is full and/or the humidity level has reached 45%.

Here's a good rule of thumb if you use your humidifier year round.

In the Winter you want to maintain a humidity level of 50 to 60%. The moister the air, the more comfortable it will feel. Plus, the humidity helps eliminate static electricity in the air.

Conversely, in the hot, humid Summer months, you want to keep the humidity level as low as possible (35% or less). Also, if you have ceiling fans, using them 24 hours a day, helps to move the air and generate a windchill, which fools your body into thinking it's cooler than what it really is. At the same time, it's saving on energy costs by not having to run your AC as much, because the dehumidifier is removing the humidity.

Just remember, the higher the setting, the higher the humidity level will stay. The lower the setting, the more humidity will be removed and the more comfortable you'll feel in the Summer.

And don't forget Routine Maintenance. Clean the air intake filter regularly. Clean and wipe down the refrigerant coils every 60 days. And don't allow water to remain in the collection bucket to long. As mold can build up in it.

Speaking of which, the water in the bucket, when fresh, is great for watering house plants. Because, when it's fresh, it's distilled water. No chlorine or minerals.

on May 04, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

My HB 40 is not collecting water as aggressively as when it was new. Now several days running only collects 1/2 inch. Is the unit done?


Dehumidifiers don't really have a lot of moving parts. Basically it cools the metal coils and a fan blows air across it.

They can usually be set to a specific range of humidity levels and the fan speeds can usually be adjusted.

If you are wondering if yours if working you need to look at the coils while its running they should be COLD and you should see water condensing on them.

The colder the coils get the better the unit works. If you suspect they are very cold then your unit may not be working very well.

It cost just as much to run a unit that isn't working as it does one that is working.

Do you have a gauge to measure humidity in the house? You really do need to see what the humidity level is before you get a new unit.

The amount of water from a dehumidifier has a much to do with the humidity level in your home as it does the operation of the unit.

The dryer the air is already..... the less water there is to take out when it passes over the coils

Oct 16, 2013 | Dehumidifiers

1 Answer

Dehumidifier still runs, blows air, various controls all seem to respond. Just doesn't dehumidify. If I need to take it in for repair, can you recommend someone in Northern VA area? Thanks.


It may not need repair as, there are 5 basic, yet solvable reasons for what you described. Please pay particular attention to numbers 1 & 2..

1. The humidity extraction level is set to HIGH. Lower it to 32-35%. If you have an analog unit
(no LED screen), turn the humidity extraction knob to Maximum.

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 level
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
problem.

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.

I hope this helps you to troubleshoot & solve the problem without have to make any repairs.
Thanks for choosing FixYa.

Aug 19, 2011 | Soleus Dehumidifiers

1 Answer

I have a DDR7009EE and the fan runs continuously even when the humidity in the room is below the setting on the machine. Shouldn't the fan stop when the desired humidity is reached?


Lyle, your particular model is designed for the fan to function constantly. However, the fan running doesn't mean the compressor is always running. The reason the unit was designed this way, is for the air to be continually moving, and when the humidity sensor picks up a rise in the humidity level (above where you have it set) the compressor will turn ON and extract that humidity.

Your unit is working as it should. Thanks for choosing FixYa.

Jul 28, 2011 | Danby DDR5009EE Dehumidifier

1 Answer

Runs and blows air but the container never fills with water. believe me the room has humidity issues and we have the level set all the way to high


There are 5 basic things that can cause this problem. All are solvable. Please take note of # 1.

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, remove and 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 F. Dehumidifiers do not work
well between those temperatures (Unless, you have a Low Temp Unit). This applies mainly to
basement applications, where the air temperature at floor level is colder than at shoulder level.
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 problem.

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 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 helped you to troubleshoot and solve the problem. Please let me know. Thanks.

Jun 18, 2011 | Haier 45-Pint Dehumidifier

1 Answer

Whirlpool dehumidifier ad35dssi runs, but doesn't collect any water, even in a wet area. Have cleaned filters, no luck.


Glad to hear that you thought to clean the filter, as that would have been one of my suggestions. Because, it's the most overlooked.

But, there is another one that equally overlooked and is probably the number cause of your humidifiers problem. The humidity extraction level is set to HIGH. Lower it to 32 - 35%. If your unit does not have an LED Screen readout, set the control on MINIMAL.

This is what gets confusing about the use of dehumidifiers. They work backwards from what most people think. The lower the setting, the more moisture/humidity is extracted from the house. The higher the setting/numbers, the more humidity remains in the house. The higher setting would be used only in the Winter, because removing all the moisture and humidity will make the house uncomfortable.

If this wet area, you mentioned is a basement. The ambient air temperature at floor level is colder than at chest level and dehumidifiers don't work well in temperatures between 40 & 60 degrees F.
If this is the case, placing the unit up off the floor on a sturdy table, counter, etc that can hold the weight of the unit, plus a full bucket of water will generally solve the problem.

Also, be sure that you're maintaining at least 12" of clear air space on all sides of the unit. If the air flow is obstructed, the unit will run all day and not extract any water.

Hope this helped you troubleshoot and solve the problem. Please let me know. Thanks.

Jun 13, 2011 | Whirlpool AD35USS Dehumidifier

1 Answer

My dehumidifier compressor runs and then shuts off, then runs and shuts off, continuously. The fan continues to run. It seems to be pulling water, though it's hard to tell how much because I have a...


Part of the problem may be that you have the humidity level set to high. The fan runs constantly to move the air around. When the unit senses a humidity level higher than what you have it set for, the compressor turns ON. Once it's ON, if the humidity level is short lived, it turns OFF.

Try setting the humidity level to the lowest possible setting. Usually, that 45%. If the humidity level in you home is higher than that, the compressor should turn ON and run until either the bucket is full or the humidity level reaches 45%. If this doesn't solve the problem, turn the Master ON/OFF Switch to OFF and unplug the unit from the wall outlet for 12-15 minutes. Plug the unit bakc in, turn the Master ON/OFF Switch to ON and set the humidity level at it's lowest setting. Allow the unit to run until it cuts OFF and check the bucket for water. Hopefully that 12-15 minute time out allowed the unit to reset itself.

Hope this helped you to troubleshoot and solve the problem. Please let me know. Thanks.

May 11, 2011 | Maytag M3DH30B2A Dehumidifier

1 Answer

Unit runs but doesn't collect water and there is a lot of water in the basement. Have had dehumidifier for two weeks and was working well before.


Keep in mind, that a dehumidifier only draws humidity from the air, if the level of humidity is higher than what the controls are set on. For instance, if you have the dehumidifier set on 65 to 70%, that's a high level of humidity to maintain in a house. If you have it set for 35 or 45%, that's a low level of humidity to maintain in a house. Which, generally is what you want to maintain in the hot, humid summer months. Also, it's not uncommon on some dehumidifiers for the fan to almost run constantly. It's designed to keep the air moving, in a effort to detect when the humidity level rises.

Also, a dirty air intake filter makes the unit strain to keep up and can't take in moisture as it should. So, if you haven't cleaned the filter no is the time to check and clean it. And while your at it, clean the cooling coils too. Since it sounds like this unit has been working hard for 2 weeks.

The easiest and best way to test a dehumidifier at home, to see if it's working properly. Is to place it in the bathroom and turn the shower ON and don't operate the bathroom's exhaust fan. Set the humidity level low (45%), turn the unit ON and close the door when you leave. Wait 15 to 25 minutes and check the water collection bucket. If there's water in it, it's working as it should.

For more information on the proper operation of a dehumidifier, go to the Tips section of Fixya and look up "Taking the confusion out operating a dehumidifier".

Hope all this helps you troubleshoot and solve the problem. Please let me know. Thanks.

May 04, 2011 | Dehumidifiers

1 Answer

Of our three 54501 Kenmore dehumidifiers, none produced water after two - three weeks. They run but no humidity is drawn out of the air.


Keep in mind, that a dehumidifier only draws humidity from the air, if the level of humidity is higher than what the controls are set on. For instance, if you have the dehumidifier set on 65 to 70%, that's a high level of humidity to maintain in a house. If you have it set for 35 or 45%, that's a low level of humidity to maintain in a house. Which, generally is what you want to maintain in the hot, humid summer months. I find it uncanny, that all 3 units are not collecting any water. So, it may simply be the case, that the humidity level on each unit is improperly set.

Also, a dirty air intake filter makes the unit strain to keep up and can't take in moisture as it should. So, if you haven't cleaned the filters on a regular basis, not is the time to do so. And while your at it, clean the cooling coils too.

The easiest and best way to test a dehumidifier at home, to see if it's working properly. Is to place it in the bathroom and turn the shower ON and don't operate the bathroom's exhaust fan. Set the humidity level low (45%), turn the unit ON and close the door when you leave. Wait 30 to 40 minutes and check the water collection bucket. If there's water in it, it's working as it should.

Hope this helped you to solve the problem. Please let me know.

May 03, 2011 | Kenmore 54501 Dehumidifier

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