Question about Maytag M3DH30B2A Dehumidifier

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Dehumidifier not removing moisture

My Maytag dehumidifier is not removing moisture from air. The fan is running but not the compressor. I did notice for the first time that this unit has an intake air filter which was quite dirty, I have since cleaned it and put it back in but it still does not work. Any suggestions?

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  • 148 Answers

Could have overheated the compressor if the filter was really dirty and blown it

Posted on Jun 21, 2009

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2 Answers

Why does blower wheel stop on Frigidaire dehumdifier?


Good Afternoon Desi,

I understand that the blower wheel is not spinning on your Frigidaire dehumidifier, model# FAD504DUD. I also see that the compressor will stay on unless the dehumidifier is unplugged. I suggest you contact the manufacturer for further assistance. They can possibly clarify why the compressor stays on and why the blower fan is not working. If not, they should at least be able to point you in the right direction of having your dehumidifier working. Hope this is helpful.

-Best Regards-
WP

May 30, 2014 | Frigidaire FAD504DUD White Energy Star 50...

1 Answer

Dehumidifier (M7DH45B2A) runs but is not removing moisture from the air. The compressor goes on as does the fan.


Hi,
There are many reasons why a dehumidifier willnot work or collect water.
Here is a tip that I wrote to help people to figure out what is going wrongwith their dehumidifier

Dehumidifier is running but no water is in bucket

heatman101

=--=
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Aug 27, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

Runs but doesn't work (no water accumulates)


It sounds like what you hear working is the fan. The unit also has a compressor; if the compressor is bad or the freon is gone, the fan will run but the coils wont cool to remove moisture from the air.

Jun 26, 2011 | DeLonghi DE500P Dehumidifier

2 Answers

Does not collect water in bucket but runs all the time


Does it have a filter?
http://whirlpool.custhelp.com/app/answers/detail/a_id/953

also:

"
It may be that the humidity level or temperature in the room where your dehumidifier is located is too low.

When the outdoor temperature is below 50 F, the indoor air will be dry even when the air inside is warm, therefore when it's cold outside the dehumidifier may collect little or no water.

Air conditioners will also remove moisture from the room, even if it's hot and humid outside, resulting in little or no moisture collecting in the dehumidifier bucket.

Some dehumidifiers have a deicer which turns off the compressor but keeps the fan running. When the compressor is off, moisture is not removed from the air. The deicer turns off the compressor when the room temperature is cold.

Some dehumidifiers do not have a deicer. If the room temperature is low enough, ice may form on the evaporator coil. The ice prevents the dehumidifier from removing and collecting water. If ice forms on coils, unplug dehumidifier until ice melts and room temperature rises."

Jun 21, 2011 | Whirlpool AD25BBK Dehumidifier

1 Answer

Model BHD 651-C Serial 611TA000375 Problem: Unit comes on, fan operates but compressor is not kicking in. While the fan operates it is not pulling any moisture out of the air. Controls indicate that...


Hi,
There are many reasons why a dehumidifier willnot work or collect water.
Here is a tip that I wrote to help people to figure out what is going wrongwith their dehumidifier

Dehumidifier is running but no water is in bucket

heatman101

';';';';';';';
';';

Jun 09, 2011 | Comfort-Aire BHD-651 Dehumidifier

2 Answers

Dehumdifier not collecting water.


It may be that the humidity level or temperature in the room where your dehumidifier is located is too low.

When the outdoor temperature is below 50 F, the indoor air will be dry even when the air inside is warm, therefore when it's cold outside the dehumidifier may collect little or no water.

Air conditioners will also remove moisture from the room, even if it's hot and humid outside, resulting in little or no moisture collecting in the dehumidifier bucket.

Some dehumidifiers have a deicer which turns off the compressor but keeps the fan running. When the compressor is off, moisture is not removed from the air. The deicer turns off the compressor when the room temperature is cold.

Some dehumidifiers do not have a deicer. If the room temperature is low enough, ice may form on the evaporator coil. The ice prevents the dehumidifier from removing and collecting water. If ice forms on coils, unplug dehumidifier until ice melts and room temperature rises.

The filter (on some models) may be dirty or clogged. If so, clean the filter. For instructions on cleaning the filter.

I hope this help to solve, if this answer solve it, remember to rate it. Good luck.

Oct 01, 2010 | Whirlpool AD50USL Dehumidifier

1 Answer

I have a dehumidifier that runs but does not pull moisture from the air in the basement. the application is about 3-5 years old. It is a Maytag and I purchased it at Home Depot. The Model is M3DG30B2A A....


There are a couple of things you can check for and they are; First of all, when you say the unit is running you may only be hearing the fan run. The compressor may possibly be not running(if it isn't running you will have no dehumidification as a dehumidifier is really nothing more than a small airconditioner.(cooling a coil for the moisture in the space to condense to). Second, The space may be to cool for the unit to run and dehumidify well, The space should at least be 65 degrees or warmer. Third, the system may have a leak and it is out of or low on refrigerant(freon). Depending on what you paid for the unit and if it has any remaining warranty(parts only-labor not covered) if the system is out of refrigerant or if the compressor is bad it probably isn't worth the cost to repair.

Nov 09, 2009 | Fedders A7DH65B2A Dehumidifier

1 Answer

No moisture


check to see if the coils in the back are cold. if they are not, you either have no freon or the vent in the front is blocked and the condenser coils have no air flow to cool down. if they are, there might not be sufficient air flow across the evaporator coils or the air is already dry.

also, if the bucket switch isn't activated (due to the bucket not being in all the way), the fans will come on, but not the compressor.

Aug 12, 2009 | Maytag M3DH30B2A Dehumidifier

1 Answer

Running but not collecting water...


Dehumidifiers have only a few components, and operate on the same principle as a refrigerator, freezer, or air-conditioner.
Components Residential dehumidifiers have a cooling system made up of these primary components:

  • The compressor is the quiet motor (engine) of the cooling system. It's the black, football-size component at the bottom of your dehumidifier. The compressor runs as long as the dehumidifier humidistat (the humidity-sensor) calls for a reduction in the humidity.

  • The condenser is a series of finned tubes, similar to a radiator. It's usually near the circulating fan.

  • The evaporator is located near the back of the dehumidifier, right above the water-collection container. It also resembles a radiator or a coiled-up set of tubes. When the dehumidifier's humidistat senses increased humidity, it cycles on, which starts the compressor and circulating fan.

  • The circulating fan circulates the air over the evaporator and condenser coils.

Principle When the unit runs, the circulating fan and compressor also run. The fan continually draws room air over the evaporator coils, which are cold, and then over the condenser coils, which are warm. Because the evaporator coils are cold, the moisture in the room collects on them--just as the outside of a glass of icy liquid "sweats" on a warm, humid day. When the moisture on the coils increases, it drips off of the coils into the collection container.

The air then flows over the warm condenser coils and out into the room. This process removes water from the air and, because of the heat from the fan motor and compressor motor, the exiting air is somewhat warmer, as well as dryer.

Jul 29, 2008 | Maytag M7DH65B2A Dehumidifier

1 Answer

Heats up basement


Dehumidifiers and how they work
Heat pump dehumidifiers

Dehumidifiers use a heat pump (similar to an air conditioner's heat pump) or chemical adsorbents to remove moisture from the air without cooling the air.

A heat pump dehumidifier uses a fan to draw indoor air over a heat exchange coil. The coil is almost freezing. The water in the air condenses on the coil and is drained. A second heat exchange coil reheats the air, which the dehumidifier exhausts into the room.

A heat pump dehumidifier dumps heat lost from the compressor and fan motors into the air. It returns to the indoor air the heat generated by the dehumidifier turning water vapour to liquid. I got this off the internet

Jun 24, 2008 | Maytag M7DH45B2A Dehumidifier

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