Question about Holmes Products Cool Mist HM3500 Humidifier

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Humidifier doesn't stop

Holmes humidifier HM3500 does not shut off, even when humidistat is turned way down.

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  • Anonymous Mar 15, 2014

    does the top come off for cleaning?

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I had the same problem if you dissasemble the unit you will probably find a capacitor between two blue wires has blown out

Posted on Jun 04, 2009

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1 Answer

Sunbeam humidifier 3502


Tanks are no longer available. Search for used units on your local craigslist.com. This model was previously made by Holmes and tanks were the same on HM3500, HM3501. Search "Holmes humidifier" then search "sunbeam humidifier" on your local craigslist.org

most bigger towns will have one or two show up. Keep an eye out. People who move to a house (or install) a whole house humidifier sell their old units. We have two of the exact model and I bought a new in box 3501 from a Craigslist posting in September 2013!

Mar 13, 2014 | Sunbeam Humidifiers

1 Answer

My Holmes HM3500 Humidifier is plugged in and full of water. Just replaced filter. Filter has soaked water all the way up to the top of filter. Both lights are lit, but fan is not turning on. I have tried...


Hi there,

The tank may be full. Your dehumidifier has a safety device that turns off the dehumidifier when the water tank is full. Usually the tank itself either presses against a switch or there's a device connected to the tank that triggers a switch when the tank is in place and full.
If you've emptied the tank and the unit doesn't run, inspect the place where the tank rests to see if there's a switch or mechanism that's not being activated. You may be able to turn it on with a simple flick of your finger.

Post comments  for more help or information .........

Good Luck!!

Thanks

Dec 22, 2009 | Holmes Products Cool Mist HM3500...

1 Answer

My Aprilaire 560 doesn't shut off even if the blower is off.


My Aprilair 560 turns on and off repeatedly.Making a loud banging sound.Changed my water valve worked 1 day and started agin.

Dec 20, 2009 | Aprilaire 550 Humidifier

1 Answer

How do you change the filter in a holmes cool mist


http://www.jardenstore.com/manuals/MANUALS/HM1865-U_43_74701759.PDF

here is the website for the manual. when you download it go to the maintance section and it will let you know. if not. basically all you have to do is turn off your unit first. take the base and the tank off take out the wick filter disgard and put in new one. put everything back and turn on unit. and it should would like new

Aug 15, 2009 | Kaz 3300 Humidifier

1 Answer

How do i clean the fan blades on the holmes humidifier


I am assuming a lime buildup from evaporated water. Use vinegar or drip coffee maker cleaner.

Jun 14, 2009 | Holmes Products Cool Mist HM3500...

1 Answer

Hm3500


It's not a problem for the tanks to empty at an uneven rate...as long as the second one continues to supply water after the first one is empty. Yes, a slight tilt off of level could cause this. One way to test for this is to turn the entire unit around. If the floor is uneven, this might cause the other tank to empty first. You could also try placing a thin spacer (cardboard?) under a couple of the feet to change the level. Whichever tank is lowest should tend to empty last.

Jan 26, 2008 | Holmes Products Cool Mist HM3500...

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