THE UNIT DOES NOT DEHUMIDIFY, MODEL HD456E, I SET THE TEMPERATURE TO 50 AND IT ALWAYS SHOWS THE WORD "LO" AND WILL NOT RUN, UNIT HAS LESS THAN 200 HRS. WHAT DO I DO? unit was purchased at menards in feb of 2009

1. Check that the filter in the unit is clean.
2. Check that the room temperature is above 41 degrees.
3. Check that the humidity isn't set too low, recommended humidity is 45~50%
4. Make sure that the unit has plenty of space all around to allow for sufficient air circulation.

You can normally hear a humidistat open and close if you listen closely. Also, the water tank has either a float or pressure switch that will shut it down.

I believe the fan is designed to run all the time, and no, it costs very little to run an 18w fan. You can use a timed socket, or switch it on and off when needed. I don't believe the Haier has specific switching times.

I suspect from what you have described, that the humidity extraction level is set to high. Lower it (Arrow Down) to 30-32%. If the filter is clean and the water collection bucket is installed properly, the unit should start working, shortly there after.

To assist you further, I have included a link to the Owner's Manual for your unit. Just in case you have misplaced yours. You can download and print the manual for future reference.

http://www.haieramerica.com/en/asset/product/b9373cda75

I hope this helped you. Please let me know. Thanks.

It could be what you say or it could be that the humidification extraction level is set too High. Try lowering the extraction percentage to 32 - 35%.

If that doesn't help and you'd like to order replacement control board/panel. Call Haier Parts and Technical Support 877-337-3639. But, you may find it cheaper to replace the unit, then repair it.

A couple of things may be happening: The humidity extraction level may be set to high and it can't extract any humidity at that level. Reset/Lower it to 35%. The fans on most dehumidifiers run almost constantly (designed that way) so that it keeps moving the air around. If the sensor picks up a higher humidity level than what it's set to maintain, the compressor will turn ON. This is particularly true, if you operate the unit in continual mode, rather than a timed mode. Also, a dirty or clogged air intake filter, hinders the units ability to remove humidity/moisture.

In addition, operating the unit is ambient air temperature of between 40 & 60 degrees F, causes the unit to struggle to dehumidify the air and the fan to run continuously. Obstructing the air flow around the unit, will also cause it to not function as it should. Maintain a minimum of 12" of free air space around all 4 sides of the unit.

Hope this helps you troubleshoot and solve the problem. Please let me know.

The unit shuts down when set at 50% because the controller is sensing that the humidity is below 50% RH. It comes on when set at 38 because the RH is higher, so it will try and dehumidify down to 38% RH.
According to the EPA the ideal RH in a conditioned space is 48 to 54%. You can set it and leave it at 50% if you are comfortable there and the dehumidifier will automatically come on when the RH is above 50% and will automatically turn off when the RH is 50% or below.

If the room tempature is close to 60, the coils may be frozen (completely encased in ice). If this is the case, move it where the water can drain off - about 1 gallon which may NOT run into the drain bucket.
I out mine over the floor drain.
Turn off and it will defost over night.
Only specially made dehumidifers work below a room temo of 60 degrees (the temp of a basement in winter).
Does it need to be running? A digital humidity sensot from Radio Shack is cheap and may tell you the humidity is OK - only 50% or less.

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

use a jumper cord and go directly to the compressor to see if it will run. if it don't run, open up the motor box and see if there is a klixon overload inside. this should be normally closed. if it isn't replace it. the klixon is a thermal overload cutout. it usually trips because of high winding temperatures and protects the motor inside. the compressor is a hermetically sealed unit. no, or little freon will cause the motor to overheat.