20 Most Recent DeLonghi DH40P Dehumidifier - Page 6 Questions & Answers

Hi,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 dehumidifierDehumidifier is running but no water is in bucketheatman101

Joe, There are 5 basic, but solvable reason 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 a manually
controlled unit.set the knob on 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 really hope this helped you to troubleshoot and solve the problem. Please let me know.

Emma, your dehumidifier doesn't have a heater. I think you are confusing the Thermometer button as a heater. The Thermometer button is for setting the the ambient air temperature in the room, the unit is running in. It doesn't change the temperatue in the room one way or another. It's not necessary to set it, unless you're operating the dehumidifier in a basement. That's the only time it would affect the unit's performance.

I hope this helped you.

Wayne, the filter may be in one of two places.

1. Turn the unit OFF & unplug it.

2. Remove the bucket from the holder. Look up inside the holder, just in front of the louvers and you may see a plastic pull tab type handle. This will be the handle to the filter frame. Pull it down and out of the unit. Since it sounds like it has never been cleaned, wash it in warm water and dish washing liquid. Rinse thoroughly and allow to completely dry, before reinstalling it. NEVER operate the unit without the filter in place, as it could cause damage to the unit

2. If the filter was not located in step 1, on the right side of the unit, just behind the louvers, there may be a pull open trap door. Flipping that door open, will give you access to the filter and it's removal. Clean it as described above.

The above are the only 2 places I know of, that the filter can be located in on a Delonghi
Dehumidifier. Unless, your unit is over 10 years old. In any event, I hope this helped you.

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 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.

Hope this helps you to troubleshoot & solve the problem.

If the machine's compressor runs when you switch it on, then turn the machine on maximum and let it run for an hour or so. Then check the coils in the back with your hand. If they are not getting cold at all, then there is a significant problem with the refrigeration process in the unit. It may have developed a leak and allowed your refrigerant gas to escape, or there may be another internal problem with the compressor. Either way you would need to have it serviced by a fridge technician, or more likely just replaced with a whole new unit since both options can potentially cost about the same.

If the unit runs normally and the coils are getting cold, then make sure they are not totally icing up which will impede the unit's performance. If your dehumidifier is freezing up then that probably means the unit itself is actually working well, and you probably just have the unit turned up too high for the conditions.

Try turning down the setting on the unit so that it cycles on and off every few hours and does not run continuously.

Also try using some warm soapy water to clean off any dust or oily residue from the cooling coils in the rear of the unit. Remember to also clean the air intake filter while you are at it.

The ambient temperature in the room may also be a bit too low, so you can try adding some heat to the room if necessary. A dehumidifier will not work properly if the ambient air temperature is too low. Basically, the warmer and more humid the room is, the better they work. Since warm air rises, you can even try lifting the unit higher up off the cold floor onto a bench or table where the air is warmer.

Sometimes the drain tube leading to the bucket is clogged. You can often clean this out by inserting the pointy end of a long heavy duty plastic zip tie and jiggling it around a bit. Do not insert anything metal or sharp into the tube or you may damage it.

You can click on the following link for a general operating and troubleshooting guide with additional tips on effective dehumidifier operation:

http://www.allergyconsumerreview.com/dehumidifier-advice-troubleshooting.html


And here is a link to a tip from another Expert (Heatman101) which includes his very detailed troubleshooting guide for dehumidifiers:

http://www.fixya.com/support/r4662409-dehumidifier_running_but_no_water_in


I hope that was helpful to you, good luck and take care.

If you choose to rate this solution, or Heatman 101's tip using the Thumbs Up scale provided, I thank you very much for your time and consideration.

Joe.

yes,its entirely possible cause after 2-3 yrs they lose some charge,make sure you read the compressor tag for correct refrigerant

Finlay, for whatever reason, Delonghi does not post their dehumidifier's Owner's Manual on line. You will have to contact their Customer Support Dept (800) 322-3848 to get one. Either my email attachment or USPS.

Hope this helped you. Have a good day.

Unfortunately, Delonghi, for whatever reason, does not post the Owner's Manuals for their Dehumidifiers online. However, if you call Delonghi Customer Support 800-322-3848 they can furnish one to you. Probably by email attachment.

Hope this helped you. Please let me know. Thanks.

Hi,
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

heatman101

You may wish to double check your model number.
R401A is a type of refrigerant used in these types of appliances.

Here is the link to the DeLonghi Support website with the links to all their available dehumidifier user manuals:

http://web1.dlservice.org/dlservice/ext/delonghi/libretti.php?rec_a=10&rec_b=DHE


To view the Support Page just use your mouse to click on the link, which is the underlined and highlighted text just above. This will open a new web browser page automatically for you and allow you to view the information at the website indicated.

You may need ADOBE READER installed on your computer to read any PDF documents found.
You can download this free at WWW.ADOBE.COM if necessary.
Click on the DOWNLOAD ADOBE READER button on right side of the ADOBE home page when you get there, the follow the onscreen instructions to install the software on your computer.

Thank you very much and good luck.

Hi,
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

heatman101

';';
;'

Your compressor needs to be diagnosed, if freon is not getting pumped to the coil, this would be why.

you shall speak to analiah and you shall say:
Analiah, Analiah!
I love you so
I not a liar
don't you know, our love will grow
with every day...so let it show.

We can't offer specific details without the model and brand. I suggest check this ilustrative tips from other expert: fixya.com/support/r4662409-dehumidifier_running

Hope this helps.

the solution is to be cleaned every day