DeLonghi Dehumidifiers - Recent Questions, Troubleshooting & Support


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 Jun 06, 2020


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


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


Are you worried as to why there is no Water in the Water Tank/Bucket at all?

Well, a few operational basics must be understood by you please.
For the unit to remove moisture from the air and draw water into the bucket/tank, the set relative humidity (%RH) must be below the current or ambient room relative humidity.

Attempt to lower or reduce the setting you have to a lower value and it should start collecting water in the tank.

Hope this helps

DeLonghi... | Answered on Nov 20, 2017


follow this steps and fix it. God bless you

Unless you are licensed and qualified professional, do not try to repair a dehumidifier by yourself. If your unit is running constantly yet there is no water in the tank, try lowering the temperature control. If the problem persists, there may be a problem within the refrigeration system. You may need to pull the filter and clean it. Also try wiping off the unit itself. When the water tank is full, the unit will shut off and will not run until the tank is emptied. The dehumidifier shuts off by a safety switch in the back of the unit. If the switch is not working properly, you may try manually pressing the button or slightly bending the switch.
    Motor If the fan motor is damaged or will not work, no cool air will be coming out of the dehumidifier. The unit, however, may still run. You may need to replace the motor. If the coils in the back of the dehumidifier constantly freeze, try turning off the unit for an hour or re-locating the unit to a higher position to allow the room to heat up. If your water tank is constantly full and you are emptying it on a daily basis, you may have a water leak somewhere in the room with the dehumidifier.

    DeLonghi DE500P... | Answered on Oct 27, 2017


    Did you punch out (or cut) the plug that the hose connects to? If not, its blocking the water from draining to the hose.

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


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    DeLonghi 50-Pint... | Answered on Oct 25, 2017


    It's basically an air conditioner so if the fan is running---the condenser not plugged up via rats nest---lint----the float switch working---if possible tip over switch working----the system maybe low on refrigerant

    DeLonghi... | Answered on May 31, 2017

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