Question about Kenmore 54351 Dehumidifier

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Condenser keeps icing up.

Sears 35 pint dehumidifier Model 580.54351 since 2007 has run in our finished basement until now . I have maintained it according to the manual (clean filter and coils) and have a hose hook up to a drain. The problem is that the coils keep icing up and there is no extraction of humid air whatsoever. Also the humidity control switch no longer turns the unit on or off as it used to. I have to unplug the power to it.

In previous years of use in seemed to function just fine. Any advice would be greater appreciated. P.S. It is not one of the Kenmore dehumidifiers with the serial numbers listed for recall.

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Here is a tip that I wrote about that problem...


Posted on Apr 30, 2010

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Dehumid....ad70usso....runs all the time auto settings don't seem to working collects fine ..but won't turn off when air is dry thanks

There are 4 basic, but solvable reason for what you described. Please pay particular attention to numbers 1 & 2. Also, keep in mind, basements stay moister longer than upper rooms.

1. The humidity extraction level is set to HIGH. Lower it to 32-35% and disable the auto mode.

2. Air intake filter is dirty or clogged. Turn unit OFF, & Unplug the
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Only the fan is running Thanks. Douglas Bisson..

Mr Bisson, there are several things that can casue the problem you have. All of which a usually solved very easily.

1. Dirty or clogged air intake filter. Remove and clean the filter per the manufacturer's instructions. Clean the filter once every two weeks, as part of routine maintenance.

2. The humidity extraction level is set to HIGH. Lower the setting to 35% or lower.

3. Obstructed air flow. Maintain a minimum of 12" clear air space on all sides of the unit, while in operation.

Any or all of the above can cause the problem and are easily solved. I hope this helps to troubleshoot the unit and solve the problem..

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Although, this was a poorly designed unit, manufactured by Whirlpool for Sears's Kenmore line, I'm not aware of any recalls due to a defective sensor. I can tell you, that although the air temp in your basement may be 61 degrees F, at floor level the temperature can be as much as 5 to 8 degrees colder. This definitely, would affect the operation of the dehumidifier. Also, a dirty or clogged air intake filter will cause the unit to freeze up. As will dirty condenser coils. Cleaning the coils twice a year, is recommended routine maintenance. And regular cleaning of the air intake filter is a must.

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