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DeLonghi DDE 40E Ice Formation in Back After 30 Minutes Use

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We've lost the manuel for the DDE.40E. Could we please get a copy or downloaded. Thanks

Posted on Oct 27, 2011


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I need a manual for delonghi dehumidifier DDE 40E

go to the companies web-site or to

Aug 07, 2011 | DeLonghi DDE40E Dehumidifier

1 Answer

Why is the defrosting light coming on periodicaly.

Defrosting is a normal function of a dehumidifier. When the evaporator gets too cold and starts to ice, the dehumidifier goes into defrost mode to clear / stop the ice formation. How often is the defrost light coming on and does the dehumidifier seem to be dehumidifying as expected ?


Feb 01, 2011 | Danby DDR4010E Dehumidifier

1 Answer

Soleusair showing signs of limited life

If the room temp is below 60 degree, coils may be frozen in block of ice - see if you can see into grills.

If frozen, unplug and set in tub or over drain.

Check to see that it is not set on CONT (continous) as it will run but with low indoor humidity in winter, not have mosture to extract.

Sep 20, 2009 | Soleus CFM-40 Dehumidifier

1 Answer

Dehumidifier ices up

unplug and take unit apart,blow out dust then carefully spray some cleaner-degreaser on and wash both condenser and evaporator coils,then let dry throughly, try not to soak the electrics too much a little will dry, let dry throughly then start it and leave it run a few minutes carefully touch top of compressor head,if quite warm and one line isn't hot and the other line isn't cold entering and exiting the compressor and evap coil starts to ice again you may be low on freon(refrigerant)

Aug 29, 2009 | DeLonghi DE500 Dehumidifier

1 Answer

Unit blows out cold air while on dehumidifier

Liz; Check for a fuse somewhere in the heat circuit. The master breaker in the house panel also

Jul 07, 2009 | Dehumidifiers

2 Answers

Delonghi dh400p dehumidifier error e1 with ice

was the filter dirty that will do it let it defrost and put it back on

May 17, 2009 | DeLonghi De'Longhi Energy Star174;...

1 Answer

Dehumidifier not working

I had the delonghi dehumidifier and ran into similar difficulty. It frose the humidity instead of draining it and turned the evaporator coil into a block of ice. Their service desk may tell you otherwise, but my difficulty was in the unit controls. All manufacturers must play by the same thermodynamic rules and I don't think they understand them. Their guarentee required me to shlep it to a service center an hour and a half away. I took it back to the store and got my money back. I was attracted by their built-in condensate pump, but that couldn't overcome lack of performance.

I bought a soleus 40 pint unit, put it on a shelf screwed to the wall and gravity drained the condensate with a hose. It's quiet and I haven't looked back.

Sep 17, 2008 | DeLonghi Dehumidifiers

1 Answer


I went back and rechecked. If the fan mode is selected, you can only set the fan at one of the three speeds. If you leave it in the fan mode, the dehumidifier will not come on.

Once the fan speed is selected, it will run at that speed in the dehumidifier mode. The fan will keep running, even when the dehumidifier (compressor) shuts down.

The only way to get it to turn off is to use the clock setting, which either selects how long it stands-by before starting , or how long it will run before going back to stand-by. DeLonghi calls it "stand-by," we would call it "off." DeLonghi calls unplugged "off."

I've never turned mine to stand-by, because it will never get my entire house down to 30% humidity (I have it where my air handler returns air to the basement). I live in the greater DC Metro area, where 75% humidity is considered extremely dry.

Apparently the normal mode of operation is fan on unless awaiting a clock start, or encountering a clock shut-down; either condition puts it into the "stand-by" mode.

Sep 02, 2008 | DeLonghi DE500 Dehumidifier

1 Answer

Dehumidier Delonghi DH400P not removing any water from the air

Only thing I can tell you to do is to make sure that the evaporator in the back is ice and cold. If the evaporator is not cold the unit will never remove moisture from the air. And if that is the case you have a sealed system problem. The unit may have a leak so there is no gas in it. The compressor may not be working or the humidstat my not be working properly. So check those thigs out or if its under warrenty call for service.

Jul 11, 2007 | DeLonghi DE400P Dehumidifier

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