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

The flashing pause light on your DeLonghi dehumidifier indicates that the unit is in a defrost cycle. During this time, the compressor shuts off and the fan continues to run in order to thaw any ice that may have formed on the coils. This process typically lasts for 10-15 minutes before the unit resumes normal operation.
If the pause light continues to flash even after the defrost cycle is complete, it may indicate a problem with the unit's sensor or control board. In this case, it is recommended to consult the user manual or contact a professional for assistance with troubleshooting and repairs.

Free online manual:

https://www.manualslib.com/manual/228038/Delonghi-Dde40e.html#product-DDE%2050E


Delonghi DDE40E Use And Maintenance Manual

https://www.manualslib.com/manual/254660/Delonghi-40eddh30.html#product-DDE%2050E

go to the companies web-site or to www.onlinemanuals.com

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 ?

Charlie

the solution is to be cleaned every day

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.

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)

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

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

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.