The dehumidifier will not turn off, even after the thermostat is disconnected. It is not a thermostat problem. How do I fix?

If you alter the thermostat on your MYSTERY appliance, you should hear the compressor cut in.

make model (what it is)

an ALL questions please.

You may need a new fan motor. If you can get to this
motor, with the power disconnected, see if the blade
is free to move. Do you hear any sound coming from
this unit?

The dehumidifier should be removing water at 66F 70%rh.

First make sure that the compressor and fan are running. If they are, then turn the dehumidifier off and unplug the cord from the wall outlet. Next remove the front cover from the dehumidifier. Examine the evaporator coil (about 1/2 way up) beneath the plastic heat exchanger and above the stainless steel drain pan.

If the evaporator coil is cold and completely covered with frost & ice, the defrost thermostat may be defective. Replace the front cover. turn the humidity dial to "off". Plug the dehumidifier in to the wall outlet and set the fan switch to on - the fan will run (no compressor). Run this way for one hour to defrost the evaporator. Now adjust the humidity dial to your desired humidity and keep an eye on the dehumidifier. If it freezes up again and does not automatically defrost, the defrost thermostat should be replaced. Call the manufacturer at 1-800-533-7533 for parts and instructions.

If the evaporator coil is (mostly) warm and free of frost and ice, it is likely that some of the dehumidifier refrigerant has leaked out. this type of service should be done by a (refrigerant) certified technician. Call the manufacturer at 1-800-533-7533 for help with this service.

Hi,

Here is a tip that explains what can be happening to make the dehumidifier show that the bucket is full when it is not.

Dehumidifier Problem It shows Bucket Full

heatman101

(1) Turn thermostat(censor) down. (2) Repair or Replace Moisture censor.

The thermostat tells the compressor to turn on and off so i would deffinently agree that is the problem!!! Just UNPLUG!!!! the unit and remove the electrical panel,disconnect the thermostat and bring it to a local hvac supply store and they will be able to sell you a replacement then install and monitor the unit.This should fix your problem.

Problem is that you bought a dehumidifier made by the Korean/Chinese manufacturer LG.
Search the web and you will find that you are just one of many whose dehumidifier worked the first year but now draws no water out of the air even though it makes all the right fan and compressor noises.
Most common problem is that all the Freon refrigerant escaped, apparently because the copper tubing cracked and leaked. Penguins beware, there goes the Ozone Hole!
It cost me $14 and an afternoon of investigation and testing of my LG 504EL dehumidifier to figure this out. The fix-it web site "Just Answers" said that it wasn't worth fixing after I described all the symptoms. Tomorrow I will go to the local LG fix-it shop and try to get a replacement to tide me over until I can find a reliable dehumidifier.
Sadly, last Fall I took my 25 year old Westinghouse (made in America) dehumidifier to the dump. Even though it needed me to tune it up every year or two, at least I could fix it and it kept on working for 25 years.
Good luck!
enterich

Had a similar problem with Goldstar model DH305. A solution was already posted about cutting the two white wire going to humidity control, and it works until tray fills up (no control). However, if you want a complete fix which allows you to control by selecting humidity level go to the following site:
http://www.appliancefactoryparts.com/search/partinfo.php?partsID=282871&modelsID=&typeName=dehumidifier

Part number is 6877A30013L

Almost all dehumidifiers now have automatic defrost, but if you are seeing frost is just one small area, it means there is a refrigerant leak. Check your warranty to see if the sealed system is covered longer than one year. Generally, if it is, most manufacturers will replace the unit (rather than repair it, as the repair is rather expensive compared to the cost of a new unit). If you do not have any sealed system warranty coverage left on it, don't fix it. Buy a new dehumidifier.

Thermostat or the temperature control module are not working properly. Also make sure that your fan blades are not broken or warped as this will cause you a problem. Also if the coils have or do get iced up then it will be a low coolant problem. But this is a thermostat or temp control problem