If your dehumidifier doesn't seem to run often but the humidity in the room is high, try adjusting the humidistat control on the dehumidifier to a dryer setting. If the dehumidifier seems to run constantly, but there's little or no water in the container, there may be a problem in the refrigeration system. Try cleaning the unit. If that doesn't work, you can't repair the refrigeration system yourself, you need a qualified appliance repair technician to do that.
SOURCE: two years old Delonghi DE400
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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SOURCE: Doesn't collect water in bucket but runs all the
There are 5 basic things that can cause this problem. All are solvable.
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, remove and 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 F. Dehumidifiers do not work
well between those temperatures (Unless, you have a Low Temp Unit). This applies mainly to
basement applications, where the air temperature at floor level is colder than at shoulder level.
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 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 helped you to troubleshoot and solve the problem. Please let me know. Thanks.
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