Question about Fedders A7DH45B2A Dehumidifier

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Motor runs fan works does not produce water and black tank in back (compressor?) is very hot

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Make sure that the coils of the evaporator are clean, and that the unit is getting proper airflow across the evaporator and condenser coils. Hope this helps

Posted on Sep 25, 2009

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Why does compressor continue running, even with dehumidifier turned off?


Hello Bernard, thank you for your post!
I see that you are experiencing an issue with the Frigidaire dehumidifier, FAD704DWD, compressor consistently being on. This could be a possible issue with your control panel or sensor. Since it could be any one of these underlying issues I would suggest contacting the manufacturer for further assistance. Hopefully this information is helpful to you. -Matt

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Dehumidifier


when ice forms on an evaporator unit (coil) there is an indication of internal problems with the unit. IT may occur if there is insufficient air flow ( dirty or fan speed to low ) but when this happens the thermostat just orders more gas through the tx valve and so more ice is formed then the thermostat reads it as too cold and so cuts the gas flow back by controlling the operation of the tx valve
Water from a dehumidifier will depend on the atmosphere humidity so the lower the humidity reading the less water collected
However I suggest that you have a technician check it out as the compressor start/run capacitor may be faulty and that is why the compressor is not getting hot as it may not be running properly

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Fan runs but does not collect water


It sounds as though the compressor is not running or the machine is low or out of refrigerant.

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Compressor running very hot but almost no cooling. Fan running


make sure the coils are clean both evaporator and condenser,then if there is a capacitor in the motor circuitry,check this,finally if the coils frost,then clear up and frost and clear up time and again,this is a sign of low refrigerant R134a,and this also will make the compressor run hot

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Not collecting water


If everything is running and no water is being produced the system may have lost its refrigerant. There are two motors in dehumidifiers. One is the fan and the other is the compressor. Make sure they are both running.

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Lifeguard, there are generally no user accessible safety items in dehumidifiers. You are likely describing the start relay which is used to 'boost' the compressor on starting. Jumping it will not help you. It sounds like the compressor is defective. Economically, there is no justification for servicing these units unless they require refrigerant gas or if the fan motor has seized, something you can readily determine. If you don't hear the compressor hum when it should, there is no service procedure available for these sealed units.

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Haier HDN455 dehumidifier fan runs continuously but not compressor


First ! you are trying to use this dehum in cold weather conditions. this time of the year there is little humidity in the air. best conditions for the dehum to work will be when the temp. is 65 degrees or high, and the humidity is 60% or higher. if you don't trust what I said then take it to sears to be checked out.

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Fan does not come on


I've seen abunch of these. The fan motor has a fuse wound into the windings. It cannot be replaced you need a new fan motor. The motors seem to run hot normally, leading to a short lifespan.
 I suggest buying a better brand unit.

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Help


Check to make sure the fan works. I have one with a broken internal fan and it will appear to work but will not collect water. Do not be fooled by the noise from the compressor. If your fan is broken, the compressor will run until it overheats. There should be airflow that you can feel behind the unit which should be cool and not hot.

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