Question about Honeywell Warm Mist HWM-255 Humidifier

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Honeywell warm mist humidifier shuts off

My humidifier flashes green and yellow lights, then shuts off.

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  • Anonymous Mar 12, 2014

    Sunbeam ultra mist humidifier is rattling



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I want do any thi9ng after I====push the power button once,
push timer once, I chose 50%hum. the icon (two tear drops)
stoped blinking. Nothing happen at this point as for as
humidity in tothe room. HELP

Posted on Jan 18, 2008


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Lights on but no fan, no mist

"Take the humidistat out of the humidifier and look for the 3 slits below the restart button, take a hair dryer and send some warm air into those slits for 5 minutes. That usually recalibrates the humidifier."

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Is not producing the mist

Most misting humidifiers use an atomizer to generate the mist. It is a small metal disk that vibrates very fast. I have yet to see one of these that ever lasts more than a year or two. If you remove the water container you should be able to see the atomizer. If you can put you finger on it and it isn't vibrating then thats the problem. On most small humidifiers it is cheaper to buy a new one that to try and get it fixed.

Dec 16, 2012 | Honeywell Warm Mist HWM-2030 Humidifier

1 Answer

How to reset the humidifier when the green light change to yellow ?

You just turn the switch to off and let it sit for a few minutes. Then when you turn it on again it will be green. I turn it off when I take the tank off to fill it and by the time I return, it has reset.

Nov 25, 2010 | Vicks Warm Mist V745A 1 Gallon Humidifier

2 Answers

Warm Mist HWM-2030 Humidifier: DOES NOT GIVE OFF VAPOR...

If the unit runs normally otherwise, but doesn't give off vapor, then your heating element is the culprit. i.e. if fan runs, switches in normal positions, indicating lights on, etc.and restart slide switch depressed and no mist, then, yes the heating element is the source of the problem. It may be bad, or otherwise it may just be scaled up from hard water, and require cleaning.

You may refer to your users manual, or if you no longer have a copy, you may download one at this link:

Hope this answers your question.


May 18, 2010 | Honeywell Warm Mist HWM-2030 Humidifier

2 Answers

Trane furnace humidifier not working

If there is water and power to humidifier you need a new solenoid valve or humidistat.

Jan 16, 2010 | Honeywell Power Humidifier: Furnace...

1 Answer

I don't know how or what to clean it with.

Just mosted the user manual to this site, which contains the cleaning instructions. Also, you can download the manual directly here:


May 18, 2009 | Honeywell Warm Mist HWM-2030 Humidifier

1 Answer

Honeywell Warm Mist HWM-2030 how to clean it ?

Just uploaded the user manual to this site, which contains the cleaning instructions. You may also download the manual directly here:


Nov 23, 2008 | Honeywell Warm Mist HWM-2030 Humidifier

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