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Kenmore model 580.52300 dehumidifier freezes lower half of evaporator coils consistently to de-humidify, will freeze more depending on control setting.

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Posted on Jan 02, 2017

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fridgetech
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SOURCE: maytag M7DH45B2A freezing problem

Is this a humidifier or dehumidifier?

Posted on Nov 16, 2007

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SOURCE: Kenmore model # 25800-25801 Error code E1?

unit has a sealed system leak call sears for tech support 1-800-905-9505 it is under warranty

Posted on Apr 17, 2008

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SOURCE: dehumidifier freezing up, is it the de-icer control? can it be replaced ?

Could be the tempurature of the room you have it in. Make sure it is not operating in a room below 65 degrees F or 18 C

Sgt 48

Posted on Jun 02, 2008

  • 1 Answer

SOURCE: Humidifier is freezing up

I have the same dehumidifier and it does the same thing. but I was able to fix mine. It was not low on refridgerant. There is a temp. sensor clamped to the evaporater coil with a thin metal clip. The clip rusted out and the sensor fell out of position. I used a small stainless steel hose clamp and clamped the sensor back into position. It now works fine

Posted on Jun 27, 2008

solveditnow
  • 39 Answers

SOURCE: coils freezing up

Its likely one of two things. 1) the fan isn't moving enough air through the unit. If there is a filter, clean it. 2)If aire flow is OK and its freezing up on one end of the coil and the other end of the coil is not very cold at all then refrigerant charge is probably low. I know that seems counter intuitive but a low charge in a refrigerator or A/C unit (which this dehumidifier is a derivative of) can actually frost up when slightly under charged. Now if the charge is determined to be low there is a leak somewhere and that leak will need to be found and repaired. It will probably take an electronic leak detector to find it. If the leak is on a section of aluminum tubing in a tight location it may be impossible to repair the leak and that may force you into a new unit. If its on a copper tube it can be fixed. If its on aluminum tubing it can be clamped shut if there is physical access for attaching a clamp and seal. Sometimes a leak pushes out some refrigerant oil at the site of the leak making it a visible spot to the naked eye. Hope these comments are of some help

Posted on Jan 16, 2009

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1 Answer

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if it's working well it should , unit should be removing all the moisture from air expelling out back , so its dry air

its when coils freeze up then you have a indication of problems

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Are you sure that it takes 134a? That is the refrigerant that is in cans. Without knowing what the pressures are on the high and low side and the ambient air temp, it is hard to say what the issue is. I would check the compressor cut off and that is controlled by the thermostat. If it is not shuttting off the compressor, then the temp of the evaporator coil gets too cold.

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clean the condenser in the front or the filter if it has one. no air flow to cool it down will result in overheating and no condensation collection across the evaporator coil.

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Coils freezing up..is this normal? Not sure how this is supposed to work. Could it be that it freezes the water, then turns off and empties into the pan?


The coils should not freeze up. If the fan is working, try lowering the setpoint to just below actual humidity. This will allow the dehumidifier to run and shut so water can drip off without freezing. If that works, slowly lower the setpoint over the next day or so. If the setpoint is too low, the unit runs continuously until it freezes, then never shuts down.

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3 year-old machine. Appears that the main refridgerant supply line to the coils ices up soon after you turn it on, starting near a small canister of some kind, then the ice makes it way across the...


Often times, a clogged filter will cause them to freeze up. Because, it's not getting enough air into the system to warm the coils. If you haven't cleaned the filter recently or regularly, that is more than likely the problem. Other than that, the ambient room temperature can play a role in it. If it's cooler than 41 degrees, the humidifier struggles. Same is true if it's over 93 degrees.

Hope this helps you solve the problem.

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Freezing up and bucket not filling


Hi,

The coils you see on the back of your dehumidifier are the evaporator. When the unit runs, the coils get very cold. As the fan draws the room air over the coils, the humidity in the air condenses out of the air onto the cold coils. But, if the temperature of the air the fan draws over the coils is too cool, the humidity that condenses out of the air freezes on the coils. To remedy this problem, you can try any of these: Warm up the room the dehumidifier is in. Put the dehumidifier on a sturdy table (the room air is coolest near the ground).

Turn the unit off until the room warms up.
Good luck

Aug 19, 2010 | Kenmore Dehumidifiers

1 Answer

The humidifier does not collect water at all


sounds like you may have a rusted evaporator coil and that has caused a freon leak.
it is very common on newer units as they are not made as well as they used to be.
when the coil rusts, it will cause the freon copper lines to leak the freon out and then without enough freon it will usually freeze over a few coils and eventually not take any water out of the air.
i would check to see if yours has an extended warranty and then contact the manufacturer to see if they can fix or replace the unit.

Sep 15, 2009 | Maytag M7DH65B2A Dehumidifier

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I NEED TO KNOW WHAT PERCENTAGE MEANS ON A DE-HUMIDIFIER


In plain English, the Percentage setting on your de-humidifier is the percentage of moisture that you want to maintain in the air. Relative humidity level range from about 10% (VERY dry air) to almost 100% (VERY damp air). When relative humidity is 100%, water vapor in the air will turn into rain, condensation, dew, snow or frost. 50% humidity is usually a comfortable level, but that will also depend on air temperature. The more moisture there is in the air, the warmer it feels and conversely. Warm air will hold more moisture than cooler air.

Your body is cooled when moisture on your skin evaporates into the air, carrying body heat with it. As the humidity in the air rises, less of your body moisture is able to evaporate and thus your body feels wamer. Lower humidty allows moisture from your body to evaporate more quickly and you feel cooler, both at the exact same temperature.

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1 Answer

Humidifier coils freeze


I believe a dehumidifier is supposed to operate in temps above 60 degrees. Even though your house is warmer than that, the air entering the dehimidifier may be getting into that range due to it being on a basement level etc. This is perfectly normal and is not a malfunction with your humidifier.

Your options are to either place the dehumidifier closer to a heat source in order to keep the air which is entering warmer. (I've even heard of someone placing a light bulb in front the unit during winter to warm the air slightly as it enters). Because the dehumidifier's coils get cold in order for it to collect moisture from the air, if they are freezing, giving the unit a rest for a few hours every few hours may allow the coils to thaw in between and prevent them from reaching freezing temperatures while running. You could use a timer to accomplish this, but you'll want to insure that it's a commercial grade timer in order to handle the electrical draw that the dehumidifier requires.

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Maytag M7DH45B2A freezing problem


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