Question about Whirlpool 75-Pint Dehumidifier

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Unit is repeatedly freezing up

Whirlpool AD75USTO dehumidfier. I use a drainage hose, but noticed that nothing was coming out. The hose was flushed and the filter cleaned, but still no water production even with the hose disconnected. This unit is less than 2 years old. The fan is running constantly, but I get ice formed on the right side of the unit. Apparently, the coils are freezing rather than emptying water either into the bucket or drainage hose.

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Almost all dehumidifiers now have automatic defrost, but if you are seeing frost is just one small area, it means there is a refrigerant leak. Check your warranty to see if the sealed system is covered longer than one year. Generally, if it is, most manufacturers will replace the unit (rather than repair it, as the repair is rather expensive compared to the cost of a new unit). If you do not have any sealed system warranty coverage left on it, don't fix it. Buy a new dehumidifier.

Posted on May 20, 2009

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First turn OFF the MASTER ON/OFF Switch and unplug the unit from the wall outlet and allow the unit to completely thaw, before removing and cleaning the air filter. As, I suspect, the filter is dirty and may be clogged. Historically, this is one of the things that can cause a dehumidifier to struggle and not be able to keep up.

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Hi,
Dehumidifiers2_bing.gif freezing up can be causes by a few different problems.
Here is a tip that I wrote to help people with the freezing dehumidifier2_bing.gif problem....

Dehumidifier is Freezing up and not working
http://www.fixya.com/support/r4662033-dehumidifier_freezing_up_not_working

heatman101

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Whirlpool Dehumidifier (AD75UST) blows water out upper right vent? Whirlpool Dehumidifier (AD75UST) is blowing water out of the upper right vent. Details: *Approx. 5 years old *It continues to collect water and work "normally" except for the water blowing out of the vent. I have attempted to collect water using the bucket but it continues to blow water out of the upper vent. I have also attempted to drain water through the hose attachment but, again, it continues to blow water out of the upper vent. *It is on a level surface *I have cleaned the filter in front to no avail. *The unit is run in 600 sq ft basement about 6 months out of the year on a continuous basis for the following reasons: The home is located in an area that was once a swamp. Therefore, it gets quite wet in the spring/summer. The basement/foundation is about 100 years old and has issues with seepage and water often pools in various areas when there is consistent and/or heavy rain. *I also checked the troubleshooting section of the manual but it didn't mention an issue of this type. *I have searched the web in hopes of finding a solution but have been unable to find anyone else with this problem (perhaps I'm using the wrong terminology? I'm only guessing the part that is blowing water is called a vent). *The warranty on the interior/sealed system is due to expire next month (end of April 2012). I'd like to narrow down the problem before that if it happens to be an issue that Whirlpool with pay to repair. Any ideas on how to correct the problem? Thank you in advance!

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