20 Most Recent DeLonghi DH40P Dehumidifier Questions & Answers


ck your water pump and hoses , the light is telling you it has sensed a problem

DeLonghi DH40P... | Answered on Sep 14, 2015


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.

DeLonghi DH40P... | Answered on May 27, 2014


If you've checked power to the pump and it isn't working, it needs replacing, unless it's blocked with slimy deposits. Try a vacuum cleaner on the drain hose outlet

DeLonghi DH40P... | Answered on Apr 22, 2012


Be Safe or don't do it....

On the side with the lint screen, remove the five screws holding the top panel in place. The sensor that needs to be checked in mounted on the radiator fins. Remove the sensor and 4 pin connector. With a pin, remove the loose fitting housing the "sensor"...a circuit board that "shorts" with condensation...check corrosion and look for component damage on the oft chance the circuit board was damaged by some inappropriate poking or mechanical failure. Reassemble and replace sensor...

For a short life span...or out of warranty and only at your risk (IF have significant other or kids or pets or human DNA... don't do this...) .. guide wire through screen notch and attach to outer screen. Build fortress around exposed sensor and talk to insurance agent for a special rider...seriously be careful.



Did you? Clean screen and GENTLY clean fins of lint, etc....(vacuum's brush head should do the trick...)

Taking all appropriate safety precautions.

...


Here's the 100,000 (yen) tip....with humidifier unplugged, hold down the power button (green button in lower center) and plug in the appliance.

Watch the LCD screen as it conducts a self test...and wha...lah!.

Should have a working humidifier!

(your welcome).

no really..."de nada". :"don't touch your moustache" "Doye toche moche"(?), "prego".

DeLonghi DH40P... | Answered on Nov 18, 2011


Unfortunately, Delongi doesn't list an Owner's/Operational Manual for your model dehumidifier. However, you can contact their Customer Support Dept at 800-322-3848. They can provide you with the Error Code solution, as well as email you an Owners Manual. Be sure you have the correct model number for your unit, before calling.

DeLonghi DH40P... | Answered on Jun 01, 2011


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

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DeLonghi DH40P... | Answered on May 27, 2011


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

';
';';
';

DeLonghi DH40P... | Answered on May 27, 2011


float switch . or bad pump

DeLonghi DH40P... | Answered on Jun 18, 2009


If yours has a button/switch to turn on a pump, that will redirect the water to the drain. Sllee

DeLonghi DH40P... | Answered on Aug 01, 2008


The E3 Code, indicates that the air intake filter needs to be removed and cleaned. Be sure the unit is OFF and unplugged before removing the filter. Filter cleaning should be performed at least once every two weeks, as part of Routine Maintenance.

DeLonghi... | Answered on Nov 04, 2019


all this info is in the manual. Either you threw it away or are a person who does not like to read.

DeLonghi... | Answered on Oct 28, 2019


David Mury Oct 20, 2019
On the back there are two top screws, two middle screws, and one bottom screw. Make sure the hose attachment is off. On the front there are two bottom screws. Each side has one screw at the bottom (longer than the rest). Remove all that I have mentioned. You will need to wiggle the two halves apart but they will come. Once the back has been removed, there are two more screws on the inside that need to come out before you can get the front sleeve off. Good luck.

DeLonghi... | Answered on Oct 20, 2019


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.

DeLonghi... | Answered on May 16, 2019


Usually happens when the float valve is stuck in the down or up position try wiggling the handle to release or if the collection bucket is not sitting perfectly on the safety switch has to be down square I have the delonghi dem10 model always empty and unplug before checking

DeLonghi... | Answered on Jan 31, 2019


Dear Heemin,
From the wording which you have used, it appears you think you are talking to the DeLonghi company.
You are not.
You are speaking to "fixya:".
Please contact DeLonghi or one of it's dealers by finding their access information on your computer's search engine.
God bless your efforts.

DeLonghi... | Answered on Jul 05, 2018

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