Question about Danby DDR401 Dehumidifier

1 Answer

Compresser runs, no water is removed

If I turn on the dehumidifier, the compressor starts running as normal, but no water is collected in the bin. I've run the unit for hours on the lowest setting(the --) and not a drop. I took the back off it to see what is happening. The compressor (large black pot) gets very cold and the condensation is running off it. I must admit I may have "abused" it. I was using it to dehumidify my RV last year and the temp did get down close to freezing. Not sure if it is damaged by low temps or not. It also rode in the RV for a few hundred miles, so it's been shaken a bit. BUT it did work once or twice properly after this. Is it something I can fix myself, or does it need to go for service? Thanks

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  • Danby Master
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You have a refrigerant charge that is "flashing" in the compressortor "pot" instead of in the evaporator. When it flashes in the evaporator, the latter gets cold and then the air going over it releases its moisture, it collects, and then drips into the pan.

If you have not had any work on the unit and have not had anyone mess with the refrigerant charge, it cannot be overcharged so I would assume at this point that there is some sort of obstruction inside the system that is causing the issue. Yeah, take it in for professional evaluation and repair. But if you had someone gas it up, there is too much in there.

Posted on Mar 27, 2017

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Posted on Jan 02, 2017

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MNTECH
  • 1543 Answers

SOURCE: dehumidifier

Most dehumidifiers these days have a built in defrost control, which turns the compressor off when the coils frost up while the fan continues to blow to help melt the frost off, so if it is frosting you may need a new defrost control, but first check the following: If your model has an air filter, clean it, as restriction of air flow will contribute to icing. Try to move the unit to a warmer location. Usually the best way to do this is to get it above the floor as far as possible, as the air temp is warmer closer to the ceiling than it is at the floor. Make sure there is plenty of room for air to circulate. (don't push it against a wall)

Posted on Sep 15, 2008

heatman101
  • 43501 Answers

SOURCE: fan runs, but compressor does not start

Hi,
There are many reasons for a dehumidifier2_bing.gif to not work or collect water.
Here is a tip that I wrote to help people to figure out what is going wrong with their dehumidifier2_bing.gif.

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

heatman101

Posted on May 18, 2010

heatman101
  • 43501 Answers

SOURCE: danby ddr4588ee dehumidifier runs, but there is no

Hi,
There are many reasons for a dehumidifier2_bing.gif to not work or collect water.
Here is a tip that I wrote to help people to figure out what is going wrong with their dehumidifier2_bing.gif.

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

heatman101

Posted on Jun 18, 2010

heatman101
  • 43501 Answers

SOURCE: Danby DDR6009RRE dehumidifier bucket switch operation question.

Hi,
There are many reasons for a dehumidifier2_bing.gif to not work or collect water.
Here is a tip that I wrote to help people to figure out what is going wrong with their dehumidifier2_bing.gif.

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

heatman101

Posted on Jul 13, 2010

  • 4736 Answers

SOURCE: My Danby DDR583R dehumidifier no

There are a several things that can mimic a faulty humidity sensor.

1. The air intake filter is clogged and needs to be removed and cleaned.

2. The coiling coils need to be cleaned.

3. Ambient air temperature at floor level is between 40 - 60 degrees.
dehumidifiers do not work well between those temperatures
(Unless, you have a Low Temp Unit). This applies mainly to
where the air temperature at floor level is colder than at shoulder
level
in basement applications. Raising the unit up off the floor,
onto a sturdy table, counter top, etc, that can handle the weight
of the unit, plus a full tank of water, will usually resolve this
problem.

If the above fails to help solve the problem, replacing the Humidity Sensor is certainly an option. But, before you jump into it, make sure you have an accurate wiring diagram, so you know which sensor is which. As the part does not come with installation instructions.

I hope this helps you and thanks for choosing FixYa.

Posted on Jul 27, 2011

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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.

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

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heatman101

\]\[[]

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Hi,
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Here is a tip that I wrote to help people to figure out what is going wrong with their dehumidifier2_bing.gif.

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http://www.fixya.com/support/r4662409-dehumidifier_running_but_no_water_in

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