Question about Maytag M7DH45B2A Dehumidifier

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M7DH45B2A dehumidifier does not have auto restart when power goes

Out in a storm and no one is in house to reset it. Shouldn't it auto start. I can't find manual.

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No. I went away for a week and set mine up in the tub. Power went out and it was off when I got home. You could buy a UPS ( unterruptable power supply) from the computer area in Walmart and hook it up to it. This would allow it to still run for a while and if the power came back on while it was still under battery power it would run like it was running. You can buy larger UPS units that would keep it running for longer amounts of time. Just an idea.

Posted on Mar 10, 2009

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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

Frost build up on a dehumidifier maytag model M7D45B2A A-R. Built up again after completely defrosted and built up again after cleaning filter and unit.


The model you have was made for Maytag by Fedders. Unfortunately, Fedders as you knew them, when you purchased the unit, is no longer in business.

The part you need to replace is CRCFD2518-020- Pc board w/auto restart dehumidify and with anti-icing thermostat (defrost thermostat). this unit also include the humidistat control. However, that part is no longer available and there are no substitutions for that part.

Don't feel bad. This part was also used by many other name brand manufacturers and is no longer available for their dehumidifiers ether.

I'm really sorry, I wish I had better news for you.

Jul 02, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

Unit plugged in and no power. was wondering if there is reset or something elde to try? There is power to electrical outlet.


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 12, 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

Dehumidifier #M7DH45B2A keeps tripping the GFCI . . .which seems like there is a short somewhere. Would appreciate your problem assesment and solution recommendation. Thanks.


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I would check if the compressor is starting... my first thought is that the compressor is either locked pu or not starting right because of a bad capacitor...


There are 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

heatman101

Sep 12, 2010 | Maytag M7DH45B2A Dehumidifier

1 Answer

Manual for a Maytag M7DH45B2A


I could email you the 6 page users guide that came with mine. crashfeldman@yahoo.com

Dec 29, 2008 | Maytag M7DH45B2A Dehumidifier

1 Answer

M7DH45B2A Dehumidifier


The fall may have knocked out some wiring -- open the unit (remove back panel, then remove front by taking out screws inside) and see if any of the cables to the front panel or control board came out.

Jun 20, 2008 | Maytag M7DH45B2A Dehumidifier

1 Answer

Maytag m7dh45b2a


Check room humidity, if it is already below 35 it will not start because that is the lowest it will work to.

Jun 12, 2008 | Maytag M7DH45B2A Dehumidifier

1 Answer

Will not power on after the electricity came back on in the house!


That capacitor is a run cap for the compressor. Your problem sounds like a faulty connection in the circuit which supplies power to the solid state electronics. The electronics will have a 115 VAC supply from the rest of the machine's circuitry, most likely running to a small transformer. Check for 115VAC when you attempt to start the machine. Trace the circuit until you find the point where the power disappears when the start is pushed. If this does not reveal the problem, replace the board that has the transformer on it. There is a faulty connection somewhere which is opening when power is drawn. It is also possible that the compressor is locked & drawing enough power to disable the rest of the machine. Try it with the compressor disconnected, before replacing anything.

Oct 11, 2006 | Maytag M7DH45B2A Dehumidifier

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