Question about Aprilaire 550 Humidifier

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It has been awhile since i removed my water pad and forgot how to route water line in pad

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  • Anonymous Feb 02, 2009

    There is no water coming out of solenoid but I checked there is water going into to solenoid.

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I've got a 560A, but if it's similar:  The pad sits in a plastic frame with the drain hole and "funnel" at the bottom.  At the top of the frame, there's a plastic piece that sits at the top of the pad; it snaps into the frame and the frame snaps into the humidifier housing.  The water tube from the solenoid slides into this plastic piece so that the water is directed to the top of the pad.

Posted on Jan 28, 2009

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I hear no water draining from my heathy soluions lennox humidifier just put in a new filter


None leaking? Try removing the cover, and manually cycling on the controler switch? Does the solenoid click on, next to the humidifier (the unit with the water line running through it, with wires coming out of it)? If it does click on, is water running down the water pad? It doesn't necessarily drain water when it's working correctly. All of the water SHOULD be getting evaporated into the air return duct.

If it's clicking on, but no water is running out, you should check the water supply saddle valve and make sure it wasn't turned off during servicing.

If it's not clicking on, you should test that you are getting voltage (12v-18v DC) to the solenoid. If you're not, check all wiring connections and make sure they're tight. If you still don't get power, you have either a problem with your control unit/humidistat, your DC power supply, or the control board on your furnace.

Jan 06, 2013 | Humidifiers

1 Answer

I have a honeywell he220a humidifier . the water drips in but does not get the filter pad wet.


Open the waterline tap valve or may have to clean small orifice that is in line where 1/4" line meets humidifier. Need to shut water off and in screw nut holding copoet line to humidifier

Jan 22, 2011 | Honeywell HE265 Humidifier

1 Answer

My Aprilaire new water pad has a white substance on it. I mentioned this because twice the pad (tworeleased a sticky, mucous substance that plugged the drain line and caused flooding in my basement. The...


Hello,All the pads have a protectant(white) coating because the pad is aluminum and would rot out fairly quickly from getting wet.The slime is bacteria(fungus) not from the coating that forms from stagnant (sitting) water.Make sure the unit is draining out dry after each cycle.With the pad out pour vinegar OR bleach & water (10:1) to kill the mold in the drain pipe.Do not clean the pad at all ,it gets replaced.They sell an inexpensive wet floor alarm at the store that makes noise when wet.

Oct 12, 2010 | Aprilaire 550 Humidifier

1 Answer

Water keeps leaking out onto our carpeting.


Check the drain lines to make sure the are not plugged and check the hidifier pad to be sure it is not scaled up and not letting the water flow through the pad. Last thing is make sure the humidifier is level so the water isn't leaking out the cover instead of the drain.

Feb 18, 2010 | Humidifiers

1 Answer

House is too dry


remove the cover and replaced the water pad and clean the water guide on top of filter and lower drain case by drain hose,then make sure the fan is operating and the water inlet and outlet lines are lime build-up free

Jan 01, 2010 | Aprilaire 700 Humidifier

1 Answer

It's getting water from supply but not putting it thru to the pad.


the orifice after the solenoid is plugged. Shut water off remove line after the solenoid valve and clean orifice. This should do the trick.

Nov 03, 2009 | Aprilaire 550 Humidifier

4 Answers

Water runs out of the bottom of the unit


Check your plastic water orifice. It is in the hose fitting connected to the outlet tube of the water solenoid. It should be a blue one. Mine was completely eaten through, allowing full water flow, and thus overflowing the distribution tray. I replaced mine yesterday and no more water drips. May as well reflace the filter on the inlet tube of the solenoid at the same time. I used a piece of very stiff, but thin, wire formed into a small hook to remove both old parts. Replacements are readily available from multiple sources on line.

Feb 05, 2009 | Aprilaire 700 Humidifier

1 Answer

How do you change the mineral absorption pad?


The pad is very easy to replace. Simply remove the water tank. The mineral pad floats in the hot water reservoir. Pull out the old one and discard if it has begun to break down. That's all their is to it.

I hope this helps.

Jan 01, 2009 | Slant Fin GF-210W 2 Gallon Humidifier

2 Answers

Routing waterline to pad


1/4" flexible copper pipe. Tap into your cold water line using the included saddle valve (pierces the pipe), attach the 1/4" flexible copper pipe to the saddle valve on the cold water pipe and the solenoid valve on humidifier unit using the included compression fittings. Tada!

Dec 10, 2008 | Aprilaire 550 Humidifier

1 Answer

No water running through the pad


I has same problem and was able to fix ti by taking off the selonoid (cylinder) and then removing both fittings (where the water line enters and then exits the selonoid. The fitting where the water enters has a small pinhole that I found clogged and just cleaned it with a toothpick. After cleaning and reattaching everything, it works fine.

If that doesn't work, you might need a new selonoid which are around $70-$80.

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