Question about LG LHD45EL Dehumidifier

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Ice forming on the to

Ther is ice forming on the top of my dehumidifier along the crack between the front face plate and the top housing. It still seems to be drawing water out of the air, but Ihave to shut it off and let the ice melt every now and then. What causes this?

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  • LG Master
  • 5,059 Answers

Usually this happens for one of two reasons: 1) there is a problem with the refrigerant and/or compressor (like a little leak of refrigerant)
2) the room that the compressor is in is too cool (below the operating range of the dehumidifier)

If the unit is under warranty, call for service if you know the room is above the minimum operating temp. If it is a problem with the refrigerant, they will probably replace the unit.

I hope this helps.

Cindy Wells
(we have an LG dehumidifier and had to have it replaced when it was less than a year old - it was icing up in the summer. It still iced up in the winter (at times due to cold in the basement).)

Posted on May 01, 2010

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HI, OUR DEHUMIDIFIER SWEATS ON THE TOP (FORMS WATER BEADS) AND PARTIALLY FORMS ICE.


>check if the steam creating by the dehumidifier is enough or balance to neutralize the fresh air supply of the dehumidifier by not creating a too much moist or more tha 40% relative humidity so that water beads would not form from the top of the dehumidifier unit or from its supply of fresh air.

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I've got ice forming on top of the humidifier along the joint where the faceplate attaches to the main box.


Hi,

Here is a tip that I wrote that will help you understand why and what you cando with a dehumidifier that ices up.

Dehumidifier is Freezing up and not working

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Ice started forming on top of unit and now it has shut off and won't restart. It hasn't been running efficiently for past few weeks. Can I fix it?


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Ice forming on top front part of unit


usually, ice build up is caused by low refrigerant levels (a dehumidifier is essentially an air conditioner). depending on the unityou may or may not be able to service it. Some of these systems are sealed at the factory and a pierce valve is needed to add refrigerant to the system.

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Running, but no water coming out. Is forming ice


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Oct 09, 2009 | LG LHD45EL Dehumidifier

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You are operating it in an environment where it is too cold.

Oct 04, 2009 | Dehumidifiers

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Dehumidifier freezes up


Most dehumidifiers need warmer air to work properly. The temperature in a basement is usually 60 - 65F; too cool for standard models. You could buy a "basement" dehumidifier. They're designed to work at lower temperatures; some as low as 40 F. Costs are about the same as a standard dehumidifier; you just have to find it.

For a cheap fix, try this; it seems to be working for me.

Since the condensate coil (the one icing up) is cold, the air entering it is too cool and the condensate frosts up the coil. Additional condensate freezes to the frost and before you know it, you've got a block of ice. Since the air coming out of the front is very warm take a large piece of cardboard around 6' x 3') and form a V. Placed it in front of the dehumidifier so it channels some of the warm air back to the rear where it warms the moist air up before it hits the cooling fins. It's helped keep the ice down.

If you want something attractive, any screen that redirects some of the air back to the rear will work. Just leave the top open so it doesn't get too hot and the some of the drier air gets out into the room.

Jul 02, 2008 | GE AHG40LJ Dehumidifier

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Ice on dehumidifier


A dehumidifier works by cooling the metal pipes on the back of the unit to create condensation (water vapor in the air). This then drips into the collector bucket. If the unit runs too long the cooling tubes can get too cold and freeze the condesing water vapor. Unplug the dehumidifier and let the ice melt, when u turn it back on, turn it down, it may be up too high. If you find this solution helpful please rate it.

Thanks - Tech101

May 20, 2008 | LG DH404E Dehumidifier

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