Question about Maytag M7DH45B2A Dehumidifier

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Icing-up on lower part of element

2 gallon portable dehumidifier lower part of element ices up..within a few hours

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Hi,
Here is a tip that will help you...
Dehumidifiericing-up on lower part of element - 2_bing.gif is Freezing up and not working
http://www.fixya.com/support/r4662033-dehumidifier_freezing_up_not_working
heatman101

Posted on Jun 08, 2010

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Moisture collecting at the top front when running, even at mid power, over the control panel, sometimes turns to ice. if I shut it off when it is doing this the problem stops for awhile


Well, sounds like you have a good cold section in the dehumidifier-- that is good!-- But I agree-- we don't want water condensing on the surface-- and we surely don't need it turning to ice!
A couple questions to help us get to the next level of trouble shooting this problem:
1.) How cold is the room you are running the dehumidifier in?
(Obviously-- the warmer a room is, the easier to remove moisture--
the colder the room, the easier to drop the air temperature well below the freezing point-- making ice.)

2.) Have the air filters been cleaned/changed recently?
A dehumidifier needs a steady fast moving supply of air across its whole condenser/evaporator surface, in order to remove the maximum amount of water from the air, and not freeze up. (I would winder if something isn't blocking the flow of air toward the top of the coil?-- so that the coil in that area is going well below freezing temperatures, and thus allowing water (or ICE!) to develop near the top of the coil?-- Can you check air flow for us?

3.) You have suggested a good solution,-- especially if the above problems can not be easily corrected: Turn off the unit every few hours, and allow the warmth of the room, to defrost the coil....
In fact-- just to make sure that the air flow is not being restricted by ice deep within the coil-- let it stay off over night-- or bring the dehumidifier into a much warmer room, to make sure no ice is still blocking air flow deep within the coil..

Let us know what you learn about air flow, and get back with us-- THen maybe we need to take the trouble shooting deeper insicde the device.

I hope this helps-- MB

Aug 22, 2013 | Comfort-Aire BHD-301 Dehumidifier

1 Answer

Icing up on a dehumidifier


The gas can pass through the pipework slowly by osmosis especially after several years use. However, check fans, heat exchangers etc first before condemning unit.

May 15, 2012 | Whirlpool Dehumidifier 40-Pint

1 Answer

Coil frosts within 15 minutes in a warm room. After 1-2 hours they coils are covered with snow like frost 1 inch thick.


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

heatman101

Apr 30, 2011 | Goldstar DH304 Dehumidifier

1 Answer

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?


If the surrounding temperature is low enough the condensing elements of a dehumidifier ice up just like the cooling plates in a frig. Either reduce the power or raise the surrounding air temperature.

Jun 14, 2010 | LG LHD65EBL Dehumidifier

1 Answer

Dehumidifier element icing up


Hi,
Unit is low on charge...
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

heatman101

May 29, 2010 | Maytag M7DH45B2A Dehumidifier

1 Answer

Dehumidifier icecing up


Three possibilities for coils icing up.

1. Low ambient temperature in the area where dehumidifier is located. If so, shut down and de-ice it. Then move the unit to a different - (warmer) - location and start it up.

2. Heating element - (which cycles periodically to liquify frost on the coils and allow water to drain) - is malfunctioning.

3. Low refrigerant level in the unit.

Sep 25, 2008 | Eva-Dry EDV300 Dehumidifier

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