Question about Maytag M7DH45B2A Dehumidifier

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Fan runs, all controls work compressor does not run.

Compressor is very hot to the touch; humidity is 75%; machine set for 60; runs continuously...and bucket is bone dry.

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  • 12 Answers

It sounds as if the unit has lost it's refrigerant charge. Take to small appliance repair for confirmation, but it probably leaked out.

Posted on Jun 29, 2009

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Followed turn on instructions in manual.CO display 2 days. continually. Unit gets Very warm & fan runs if turned off. Have to unplug to stop. Unit used approx.3 mo in '14 & just restartd this week.


could you be mistaking the room humidity indicator for the time? reason I ask is on these one display units this happens more frequently than Id care it too , the one display shows both time and room humidity also set point humidity , the only way one can tell is on some models there is a tiny light that shows up next to labeled function , easy to miss It , also if your machine is sort of new (last few years) it has been decided that it's more efficient to let the circulation fan run all the time , regardless of room humidity . this makes it a little annoying (noise) but they do cycle the compressor to regulate the room humidity

May 28, 2015 | Dehumidifiers

1 Answer

Compressor Works for a while Only On Initial Plug-in


If your machine is equipped with a humidistat it could be faulty and not sensing the humidity level accurately.

Mar 05, 2017 | Danby Premiere DDR5009REE 50 Pint Capacity...

1 Answer

I have a DDR7009EE and the fan runs continuously even when the humidity in the room is below the setting on the machine. Shouldn't the fan stop when the desired humidity is reached?


Lyle, your particular model is designed for the fan to function constantly. However, the fan running doesn't mean the compressor is always running. The reason the unit was designed this way, is for the air to be continually moving, and when the humidity sensor picks up a rise in the humidity level (above where you have it set) the compressor will turn ON and extract that humidity.

Your unit is working as it should. Thanks for choosing FixYa.

Jul 28, 2011 | Danby DDR5009EE Dehumidifier

1 Answer

When the humidity set point is reached, the compressor shuts off but the fan continues to run. Is this normal?


Chucke - Depending on which mode you're operating the unit in (Continual Mode), yes that is normal.The fan continues to run in an effort to recirculate the air. If it senses a rise in humidity above the level you have it set on, the compressor will turn and remove that humidity.

Hope this helped you.

Jun 27, 2011 | Frigidaire Dehumidifiers

1 Answer

Santa fe dehumidifier running but not producing any condensate. No ice forming on the coils and filter is clean.


You should check if the compressor is running. Your description makes it appear that the fan may be running and the compressor may not be running.

There are many things that can cause a compressor to cease running:

Open defrost thermostat
Bad run capacitor
Low refrigerant charge (caused by refrigerant leak)
Bad compressor relay
Bad compressor overload
Bad compressor motor

Other things to check:

If the fan switch is set to "on" and the humidity control is set to a high humidity level, the unit may appear to be running, but the compressor will not operate. Check the setting of your humidity control.

If the dehumidifier is operating in a room with a high temperature and a low dew point (very low relative humidity), it may be unable to remove any more moisture from the air.

If you are not comfortable troubleshooting the unit on your own, call the manufacturer service department at 1-800-533-7533, EXT 8459. They are very helpful.

Mar 05, 2011 | Santa Fe 4027450 Dehumidifier

1 Answer

Unit fan is running but the compressor is not.


Hi,
It could be a bad compressor, circuit board, or maybe even a sensor or dehumidistat...
Here is a tip about dehumidifiers that run but do not extract water from the air..

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

heatman101

Apr 24, 2010 | Maytag M7DH45B2A Dehumidifier

1 Answer

Unit runs but no water collects in bucket. Unit is over a year old and has run continuously that whole time. Up till now it has performed beautifully. Is it just worn out?


Hi;
Your dehumidifier is similar to a refridgerator or air conditioner. It has a compressor and coils, and a fan. Basically, the unit has to **** in air with it's fan, and as the humid air goes across the cold coils, the humidity condenses in to water. If the coils are not getting cold, they won't condense any water, or if the fan isn't running, or the coils are dirty. If you check your unit over, see if you can tell if anything isn't working. Make sure the control knob is set at the highest setting. If the compressor lost it;s refridgerant charge, and won't get cold, it isn't probably worth fixing

Nov 23, 2009 | Whirlpool 75-Pint Dehumidifier

1 Answer

LG LD65EL Dehumidifier doesn't work properly


What do you have the humidity level set at on your dehumidifier? The average is 65%. Make sure you do not have it set at 75% because if you do this could be causing it to keep the humidity so high.

Jul 02, 2008 | LG LD65EL Dehumidifier

1 Answer

DH30 Dehumidifier Compressor Does not Operate


I just picked one up at a tag sale, seller said it worked sometimes. Seems to have the same problem as yours. I took the time to tweak all of the connections and then re-soldered the control board with no luck. I finally disconnected the humidity control and it worked fine. By disconnecting the humidity control the unit defaults to it's highest setting and you have to unplug the unit to turn it off. Conclusion so far is that the humidity control rheostat is bad.
Note: Now while running the fan runs continuously and the compressor cycles on and off every 10 to 15 minutes. This may to be normal since the unit appears to be doing its job and I'm not sure how it is supposed to run since a purchased it broken.

Aug 05, 2007 | LG DH30 GoldStar Dehumidifier

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