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Model AD25BBL7 dehumidifier not working. Appears to have lost refrigerant. Oily liquid. No heating or cooling in coils. Does it make sense to refill? email< swygarda@bellsouth.net >

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Hello You have a LEAK that MUST be fixed before you can refill the system.Think about a replacement it is probbaly cheaper.

Posted on Aug 20, 2010

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My delonghi dehumidifier will not cool the house just keeps blowing warm air and dosnt feel to cool were thinking about giving up on it


Dehumidifiers aren't supposed to cool your house. If anything they generate heat. How it works is, it has cooling coils that it draws air across, which causes the moisture to condense, and be captured. However the heat extracted from the air has to go somewhere, so it just blows out the other side. If you want cool, buy an air conditioner.

Sep 09, 2012 | DeLonghi Dehumidifiers

1 Answer

Coil_Freezes_Up on a model DDR4507EE danby dehumidifier


If the unit runs normally and the coils are just icing up, then that probably means the unit itself is actually working well, but you probably just have the settings 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



I hope that was helpful to you, good luck and take care.




Joe.

Oct 23, 2011 | Dehumidifiers

1 Answer

Older Haier model...hd074cw (?) Does not pull water from air into bucket. Just stopped working this summer. Compressor and fan both working. What else can I check??


If the compressor and the fan are working then the next thing is to make sure The entire unit is cleaned . This may require you to diassemble the unit . The refrigerant Coils must be clean in order for the compressor to shed heat and propperly function. Once the unit is cleaned out thoroughly, if you still have problems you could be low or Out of refrigerant. If so it usually does not make financial sense to replair these unless It is a very expensive(over$500) model. You would be better off to replace it.

Aug 09, 2011 | Haier HD656E Dehumidifier

1 Answer

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
Unit, before removing to inspect & clean it, if necessary. If washed,
allow filter to completely dry before reinstalling. DO NOT operate
the unit without the filter.

3. Obstructed air flow. Maintain a minimum of 12 to 18" of clear air
space around the entire unit.

4. Cooling coils are dirty and need to be cleaned. Use warm water & dish washing liquid to
clean the coils. Rinse and wipe dry. Apply a light coating of WD40 to the coils.

If none of the above solves the problem, it may be a case of the compressor needs to be recharged with refrigerant gas or that the humidity condenser sensor has failed. These things usually occur in units that are 5 years old or older. It's rare in a unit younger than that. But, it can happen.

Jul 14, 2011 | Whirlpool Gold AD70USS 70 Pint Per Day...

1 Answer

Unit runs but the coils dont get cold


The compressor should be cool near the bottom and hotter at the top. If it runs but the coil is not cool, it probably lost its charge. Developed a leak and lost all the refrigerant.

Jun 28, 2010 | Fedders A7DH45B2A Dehumidifier

1 Answer

Compressor runs continually and cooling coils ice up but it doesn't defrost.


probally has lost some charge on the refrigerant. Low charge will ice the coil. Unless you are operating this at low temperatures. The ones I have seen do not have a defrost on them

Jan 14, 2010 | Maytag M7DH65B2A Dehumidifier

1 Answer

How do i turn heat on? LOST MANUAL


comes on automatic - two coils, one cools/condenses on outside of it, other heats/defosts, both same system and work at same time

Jan 03, 2010 | Danby DDR601 Dehumidifier

1 Answer

Compressor runs but coils don't get cool to shed water


if the compressor is really running (not just the fan) and it doesnt cool the evaporator coils then it has lost its refrigerant (likely r134a) .. thats a special job to repair.. there also has to be a leak that must be repaired .. then the system is refilled and possibly a dryer added .. if the fan is running only, then there are many other possibilities .. .. you shouldnt run the unit long since part of the cooling for the compressor comes from the refrigerant .. it will shorten its life if run a long time without it ..

Aug 01, 2009 | Haier HD451E Dehumidifier

1 Answer

Running but not collecting water...


Dehumidifiers have only a few components, and operate on the same principle as a refrigerator, freezer, or air-conditioner.
Components Residential dehumidifiers have a cooling system made up of these primary components:

  • The compressor is the quiet motor (engine) of the cooling system. It's the black, football-size component at the bottom of your dehumidifier. The compressor runs as long as the dehumidifier humidistat (the humidity-sensor) calls for a reduction in the humidity.

  • The condenser is a series of finned tubes, similar to a radiator. It's usually near the circulating fan.

  • The evaporator is located near the back of the dehumidifier, right above the water-collection container. It also resembles a radiator or a coiled-up set of tubes. When the dehumidifier's humidistat senses increased humidity, it cycles on, which starts the compressor and circulating fan.

  • The circulating fan circulates the air over the evaporator and condenser coils.

Principle When the unit runs, the circulating fan and compressor also run. The fan continually draws room air over the evaporator coils, which are cold, and then over the condenser coils, which are warm. Because the evaporator coils are cold, the moisture in the room collects on them--just as the outside of a glass of icy liquid "sweats" on a warm, humid day. When the moisture on the coils increases, it drips off of the coils into the collection container.

The air then flows over the warm condenser coils and out into the room. This process removes water from the air and, because of the heat from the fan motor and compressor motor, the exiting air is somewhat warmer, as well as dryer.

Jul 29, 2008 | Maytag M7DH65B2A Dehumidifier

1 Answer

Heats up basement


Dehumidifiers and how they work
Heat pump dehumidifiers

Dehumidifiers use a heat pump (similar to an air conditioner's heat pump) or chemical adsorbents to remove moisture from the air without cooling the air.

A heat pump dehumidifier uses a fan to draw indoor air over a heat exchange coil. The coil is almost freezing. The water in the air condenses on the coil and is drained. A second heat exchange coil reheats the air, which the dehumidifier exhausts into the room.

A heat pump dehumidifier dumps heat lost from the compressor and fan motors into the air. It returns to the indoor air the heat generated by the dehumidifier turning water vapour to liquid. I got this off the internet

Jun 24, 2008 | Maytag M7DH45B2A Dehumidifier

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