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Kim, it may simply be a case of the humidity extraction level being set to HIGH. Lower it to 35%. If it's an analog unit (No LED Display) turn the humidity extraction knob to Maximum. More often than not, this will solve the problem. If it doesn't the humidity sensor may need to be replaced.
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A dehumidifier is a 'de-tuned' air conditioner. Its job is to remove some of the heat from the air, causing a temperature differential which in turn should make the warm air give up some of its moisture ... just like a AC unit.
To understand the operation, you must accept that you cannot cool anything ... you must remove the heat from it. The heat (energy) must go somewhere ... in the case of a dehumidifier, it goes back into the room. Oh yes, also contributing to the heat is the electric components you are running ... the control boards, the compressor and the fan ... all use power and thus, give off heat.
Should there be heat coming out of the unit? ... yes, if it is running. Don't get mad ... these are things you probably learned in 6th grade science class - relative humidity - heat differential - properties of energy - etc.
All new generation dehumidifiers are designed to have the fans run all the time and the compressor comes on when the relitive humidity rises above the setting that you have chosen. I spoke with the company and asked them why this is so, and they told me that it is more energy efficient to have the machine on all the time so that when the compressor kicks in there is a small draw on electricity. Apparently when the old dehumidifiers came on it was the compressor that turned on immediately, and the fan, and this caused a very high current draw. The new design has the fan on all the time and this helps to circulate the air evenly around the area being dehumidified - thus more efficient overall coverage. I understood their explanation, but still do not like this new method of operation.
Look on the each end of the motor. If you see a rubber plug that you can remove then it can be oiled. More than likely you will find none. The vast majority of electric motors today are sealed for life and there is no provision to add oil.
Hi, No there is no way to lubricate the fans internally...they are made to run for a bit and then be thrown out... I have found that by using a thin oil like WD-40 and then positioning the motor so that it runs back the shaft into the motor you can get it to work into the motor. I usually use WD-40 and then follow with a light motor or sewing machine oil. This seems to give a longer solution...
Looks like a control board, Check the board for burn marks. What model do you have? Some parts are available on-line at appliance factory parts.. also check your Capacitor and fan motor before you install your new Board..Let me know if this helps?