Question about LG zenith zd309 30 pint dehumidifier auto shut-off external drain

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How do I put Freon in my Zenith ZD 30 dehumidifier?


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Well the gas is put in at the factory then the port is sealed shut , field addn of gas is simply not done ,
besides something went bad that made it leak out in the first place

Posted on Dec 09, 2014


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My dehumidifier does not collect any water the motor is running however no evidence that it is picking up any water.

Could be 1 of 2 things. 1st, the compressor is bad and not building pressure or the system has no Freon in it. If the compressor is bad then throw it out and get another one, not worth fixing. If low on Freon you will need to buy line taps, the Freon used in unit and will need a set of ac gauges and a vacuum pump. By the time you buy the tools needed to fix it would be cheaper to buy another one unless you already own the tools. A dehumidifier is nothing more than a air conditioner that works backwards like a heat pump.

I’m happy to help further over the phone at

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Could be low on freon or humidestat is bad..

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See if there is a float switch in the unit that may be stuck.

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Coils can freeze if the room is extremely hot. Usually, though they freeze because the path for air flow is reduced. Check input and output grilles and coils for dirt and dust and clean as necessary.

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How do i put freon in this unit

I have had a AD75UST0 WHIRLPOOL Dehumidifier for several years. If it actually still runs, I would suggest you take off covers and give the coils a good thorough cleaning. Otherwise the units are not designed to be serviceable aka - "disposable small appliance". if you do dispose of it take it to a qualified recycle organization for Freon products.

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Zenith dehumidifier

Depending upon the design, your dehumidifier could be low on Freon.

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try to put it in the middle of the room to have ventilation do not cover any vent

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Does Not Collect Water

sounds like a faulty humidistat, but may also be nearly out of freon. I have a GE unit that is also a portable air great for 5 years now...

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