Question about Maytag M7DH45B2A Dehumidifier

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Not lowering humidity. Runs OK. Low or no water yield. Ice Patch on outside of cabinet (on left facing the unit). Maytag M7DH45B2A Dehumidifier

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There can be many reasons why a dehumidifier will not work or collect water.


Here is a tip that I wrote to help people to figure out what is going wrong with their dehumidifier

Dehumidifier is running but no water is in bucket
http://www.fixya.com/support/r4662409-dehumidifier_running_but_no_water_in

heatman101

Posted on Sep 09, 2010

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Maytag dehumififier model ER981112 from 2003 runs compressor sounds like it is working but no water comes out. Air humidity is 80%.


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
===-=-

Sep 10, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

Dehumidifier runs from low to high.does not keep same fan speed.


If you are operating the dehumidifier in continual mode, this is normal, based on the humidity extraction level you have the unit set on. It senses when there is humidity to remove and speeds up. When it has reached the level you have set it for, it slows down and keeps the air circulating, until it senses a need to speed up, again.

Hope this helps you. Thanks for choosing FixYa.

Jul 28, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

Unit will turn on for less than a minute and then shut itself completely off. It is not the switch for the bucket and the filter is clean. Any ideas on what can be causing the problem?


More than likely. the humidity extraction level is set to high. Lower it to 32 - 35%. If the unit is being used in a basement application, to air temp at floor level may be to cold. Setting the unit up off the floor on to a sturdy table or cabinet top, that is sturdy enough to handle the weight of the unit, plus a full tank of water will help.

Jul 04, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

Is this a low temp model, as it is not dehimidifiying but fan is running


The model you have was made by Fedders for Maytag. The fan runs as a recirculating fan, to continually sense when the humidity level rises, above what have the unit set on. Here in, may be the problem. If you have the humidity level set higher than 50%, that's pretty high and the unit want remove much if anything. It will just continue to maintain that level. Keep in mind, the unit's humidity level must be set LOW, for the compressor to kick on and start removing humidity. By low, I mean 35% or minimum, if your unit does not have an LCD display.

I must caution you, that there is associate on this website that would tell you, that the level should be set on Maximum. Believe me, that simply is not the case. That is, unless you want your home to be hot and humid.

Hope this helps you to troubleshoot and solve the problem.

May 24, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

FAN AND COMPRESSOR START. HUMIDITY SET AT 30, ALWAYS RUNS. NO WATER IS CONDENSED. PAIL STAYS EMPTY. CLEANED FRONT AND BACK OF COILS, REALLY ONLY FINS,CAN'T GET TO COILS WITHOUT HAVING TO DO A...


Rather than have you disassemble the cabinet to get to the coils, I want you to do an "At Home Test".

Move the dehumidifier to a bathroom that has a shower. Plug it in, Turn it ON and set the humidity level at 30%. Turn the shower on to medium hot (enough to generate some steam. Do Not turn On the bathroom exhaust fan. As you leave the bathroom close the door. Wait 15 minutes and return to the bathroom. Turn the shower OFF and inspect the unit's water collection bucket for water. If you find any, the unit is working as it should. If you don't find any water, it may be that the humidity sensor has failed or the air intake filter is clogged. In which case, remove the filter and clean it. If it's the sensor, unless you are really DIY savy, I'd recommend buying a new dehumidifier. As finding the part (your unit was made by Fedders), the cost of the part and the labor involved, to me, out ways repairing it.

Now, on the positive side ... If you saw water in the bucket after the bathroom test. It may simply be, that at this time, there is not enough humidity in the room air (even at 30%) to trigger the sensor. If the unit is in a basement, the air temp (60 degrees or lower) will affect it. As the temperature at floor level (where the unit is) is 5 to 8 degrees colder than the air temperature. Dehumidifiers don't work well in cold temperatures.

Hope this helped you to troubleshoot and solve the problem. Please let me know. Thanks.

May 18, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

How do i check if its working correctly


If you want to give it the ultimate in-home test. Put the dehumidifier in the bathroom with the door closed and a hot shower running, but do not turn on the bathroom exhaust fan. Set the dehumidifier's controls as low as possible and let it run for 20 minutes. After 20 minutes, return to the bathroom, turn the shower OFF and check the water collection bucket for water. The unit will probably be running anyway, when you return to the bathroom.

Remember, the lower the setting, the more the unit will run and collect water. Until it either reaches the humidity level you have it set for or the bucket is full and the unit automatically turns OFF

That's the best way to test a dehumidifier at home. Hope it helps you.
Please let me know.

May 16, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

I have purchaced two maytag dehumidifiers M7DH45B2A either one works. I cleaned inside and out blew out the coils with air. Motor runs but will not take out the humidity.


You may have the humidity level set to high. Keep in mind, the higher the number on your LED screen, (if your units have LED display) the more humidity remains in the house. Lowering the numbers on the screen (to 45%), should have a better affect.

Hope this helps you. Please let me know.

May 11, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

My dehumidifier is not working properly. I do not know how it works, I do not have the manual. I have a temperaturesetting and a humidity level area. Do I need to set it on the humidity level to pull water...


Yes set unit humidity dial about half way or until it comes on. You need something to measure humidity. most of dials dont have a humidity reading. Set at about 50% Rus

Jun 14, 2009 | Maytag M7DH45B2A Dehumidifier

3 Answers

Dehumidifier runs but does not extract water


dehumidifier runs well, however will not drain any water

May 28, 2007 | Maytag M7DH45B2A Dehumidifier

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