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Unit not getting cold enough to condense Poss low refrigerant .. I don't see charging port

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Hi,
There are many reasons why a dehumidifier willnot work or collect water.
Here is a tip that I wrote to help people to figure out what is going wrongwith their dehumidifier

Dehumidifier is running but no water is in bucket

heatman101

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Posted on May 27, 2011

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Posted on Jan 02, 2017

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1 Answer

Using as heater and unit is blowing cold air


A heat pump is an air conditioner that reverses its refrigerant flow. In the cooling mode, the evaporator is cold to the room and its condenser is hot. In the heating mode, a valve reverses the refrigerant flow and makes the evaporator warm and the condenser cold.

Nov 24, 2013 | Soleus 10,000 Btu Portable Ac Air...

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Dirty heat exchanger


the condenser (air intake) is blocked, most likely with dust, and the fan isn't passing enough air flow. either the fan is overworking and making noise or the compressor is overheating. if it can't cool down, the evaporator (cold coil) won't get cold enough to collect condensation. unplug the unit, take it outside, open the front, and hose the condenser down. if you can see light through it, it's ok. if not, spray some simple green degreaser on it and hose it down again after about 5 minutes. if you have a stiff bristled brush, use that, too.

May 14, 2012 | Haier Dehumidifiers

1 Answer

HUMIDIFIER SET FOR 35% NO CONDENSATE SEEMS TO BE RUNNING


If the machine's compressor runs when you switch it on, then turn the machine on maximum and let it run for an hour or so. Then check the coils in the back with your hand. If they are not getting cold at all, then there is a significant problem with the refrigeration process in the unit. It may have developed a leak and allowed your refrigerant gas to escape, or there may be another internal problem with the compressor. Either way you would need to have it serviced by a fridge technician, or more likely just replaced with a whole new unit since both options can potentially cost about the same.

If the unit runs normally and the coils are getting cold, then make sure they are not totally icing up which will impede the unit's performance. If your dehumidifier is freezing up then that probably means the unit itself is actually working well. The humidity level in the room may be relatively low and you probably have the unit turned up too high for the conditions.

Try turning down the setting on the unit so that it cycles on and off every few hours and does not run continuously.

Also try using some warm soapy water to clean off any dust or oily residue from the cooling coils in the rear of the unit. Remember to also clean the air intake filter while you are at it.

The ambient temperature in the room may also be a bit too low, so you can try adding some heat to the room if necessary. A dehumidifier will not work properly if the ambient air temperature is too low. Basically, the warmer and more humid the room is, the better they work. Since warm air rises, you can even try lifting the unit higher up off the cold floor onto a bench or table where the air is warmer.

You can click on the following link for a general operating and troubleshooting guide with additional tips on effective dehumidifier operation:

http://www.allergyconsumerreview.com/dehumidifier-advice-troubleshooting.html
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And here is a link to a tip from another Expert (Heatman101) which includes his very detailed troubleshooting guide for dehumidifiers:

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

I hope that was helpful to you, good luck.

If you choose to rate this solution and Heatman101's tip using the Thumbs Up scale provided, I thank you very much for your time and consideration.

Joe.

May 30, 2011 | Kenmore 54501 Dehumidifier

2 Answers

Our dehumidifier is not taking moisture out of the air and putting water in the bucket but everythings to be running fine


If the machine's compressor runs when you switch it on, then turn the machine on maximum and let it run for an hour or so. Then check the coils in the back with your hand. If they are not getting cold at all, then there is a significant problem with the refrigeration process in the unit. It may have developed a leak and allowed your refrigerant gas to escape, or there may be another internal problem with the compressor. Either way you would need to have it serviced by a fridge technician, or more likely just replaced with a whole new unit since both options can potentially cost about the same.

If the unit runs normally and the coils are getting cold, then make sure they are not totally icing up which will impede the unit's performance. Also make sure that the room is warm enough. A dehumidifier will not work properly if the ambient air temperature is too low. Basically, the warmer and more humid the room is, the better they work. Add heat to the room if necessary to improve the unit's performance.

You can click on the following link for a general operating and troubleshooting guide with additional tips on effective dehumidifier operation:

http://www.allergyconsumerreview.com/dehumidifier-advice-troubleshooting.html

Hope that was helpful. Thank you very much and good luck.

May 23, 2011 | Maytag M7DH65B2A Dehumidifier

1 Answer

FAN AND COMPRESSOR START. HUMIDITY SET AT 30, ALWAYS RUNS. NO WATER IS CONDENSED. PAIL STAYS EMPTY. CLEANED FRONT AND BACK OF COILS, REALLY ONLY FINS,CAN'T GET TO COILS WITHOUT HAVING TO DO A...


Rather than have you disassemble the cabinet to get to the coils, I want you to do an "At Home Test".

Move the dehumidifier to a bathroom that has a shower. Plug it in, Turn it ON and set the humidity level at 30%. Turn the shower on to medium hot (enough to generate some steam. Do Not turn On the bathroom exhaust fan. As you leave the bathroom close the door. Wait 15 minutes and return to the bathroom. Turn the shower OFF and inspect the unit's water collection bucket for water. If you find any, the unit is working as it should. If you don't find any water, it may be that the humidity sensor has failed or the air intake filter is clogged. In which case, remove the filter and clean it. If it's the sensor, unless you are really DIY savy, I'd recommend buying a new dehumidifier. As finding the part (your unit was made by Fedders), the cost of the part and the labor involved, to me, out ways repairing it.

Now, on the positive side ... If you saw water in the bucket after the bathroom test. It may simply be, that at this time, there is not enough humidity in the room air (even at 30%) to trigger the sensor. If the unit is in a basement, the air temp (60 degrees or lower) will affect it. As the temperature at floor level (where the unit is) is 5 to 8 degrees colder than the air temperature. Dehumidifiers don't work well in cold temperatures.

Hope this helped you to troubleshoot and solve the problem. Please let me know. Thanks.

May 18, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

Coils don't get cold enough to condense water


It will definately need a charge, however by the time you pay someone to come and service the unit a new one will start looking pretty good!

Sep 09, 2009 | Dehumidifiers

1 Answer

PLUGGED IT IN FOR THE FIRST TIME OF THE 2009 SEASON BUT IT WILL NOT PICK UP ANY WATER. IT HAD WORKED FINE FOR THE PAST 2 YEARS.


Try to feel the lines on the compressor. The thinner line is High press and should get hot. The fatter line is Low press and should feel cold. Cold enough to allow water vapor to condense on it and turn into droplets. If neither occurs, compressor has lost "freon" charge.

Jun 27, 2009 | Danby Dehumidifiers

1 Answer

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

Jan 15, 2009 | Kenmore 53301 Dehumidifier

1 Answer

Frigidaire MDD40WW2


Your dehumidifier may be low on refrigerant. Seems cold may not be cold enough to reach the dew point to condense moisture from the air stream.

May 09, 2008 | Frigidaire FDL45P1 Dehumidifier

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