Question about Honeywell HWM-330 3 Gallon Humidifier

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Cleaning Light I have cleaned the unit to the extent that it looks brand new, ie. heating units everything. It will not operated. I turn it on, the power light comes on and than the cleaning light comes on. It will not operate

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Re: Cleaning Light

Return it, this model is a piece of junk.

I had the same problem and spent a lot of time cleaning everything - to find the plastic around the heating element had melted. Not surprised that it isn't wanting to turn back on. I looked to see what other owners have said online, I saw everyone complaining that it dies after only a short time. Don't waste your energy.

Posted on Mar 11, 2009

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Re: Cleaning Light

Either you have a problem with the sensor or the control board. Try disconnecting the sensor and see if it come on. If it does change the sensor. If not it is the control.

Posted on Dec 21, 2007

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Flashing red flight

Its probably the cleaning light that comes on periodically to remind you to clean the unit. Shut off the unit AND when you do so hold down the power button for several seconds until the flashing red light shuts off. The cleaning light should stay off until the next cleaning is due.

Per the Air-O-Swiss FAQ:

Q: Cleaning light is flashing (AOS U650, AOS 7135, AOS 7142, AOS 7144, AOS 7147)
A: Switch the unit OFF and unplug it. Empty the water in the base. Rinse the base with hot/clean water. Do not submerge the base! Visually inspect the base for dirt or mineral build up. If soft water is used decalcifying the unit every 4 weeks with EZ Cal is suggested. If hard water is used the unit should be decalcified every 2 weeks. Do not forget to reset the clean light after resetting the unit.

Q: Reset cleaning light (AOS U650, AOS 7135, AOS 7142, AOS 7144, AOS 7147)
A: The cleaning light does not automatically reset. Hold down the power button (button A in instruction manual) until the light stops flashing. The light automatically comes on approximately 14 days after plugging in the unit.

Feb 15, 2014 | Air-O-Swiss U7142 Humidifier

1 Answer

Unit does not turn on

I am having the exact same issue after cleaning the unit, it doesn't start; no light indicator at all. Anyone has a fix or recommendations?

Nov 14, 2013 | Heaven Fresh HF 707 Digital Ultrasonic...

1 Answer

How to clean sunbeam humidifier swm5250


The following maintenance procedures must be routinely followed in order to ensure proper, efficient operation of your humidifier. The unit WILL NOT WORK CORRECTLY if it is not cleaned properly.

When the unit is in use, daily and weekly maintenance is recommended. Regular weekly cleaning prevents scale buildup on the heating element and base. It also prevents micro-organisms from growing on the base. This ensures that maximum efficiency will be achieved.

We cannot over-emphasize how essential proper cleaning is to the maintenance and continued use of your unit and to the the avoidance of algae or bacteria build-up.

Allow to cool before maintenance.
1. Before cleaning, set the control to OFF (O) position and unplug the unit from the electrical outlet.
2. Remove the water tank then unlock the misting chamber by rotating the safety lock towards the front of the unit. Lift mist chamber from the unit's base.
3. Empty water and minerals from the base and place in the top rack of the dishwasher. This will remove any sediment and dirt that has accumulated in the base.
NOTE: It is imperative that the base is cleaned properly. The base is dishwasher safe (top rack ONLY) for easy cleaning.
4. Wipe the heating element clean with a soft cloth after it has had a chance to cool.
5. Replace misting chamber and engage safety lock. The Electronic Thermal Control Heating element is lined with a coating that is designed to provide the easiest cleaning and prolong the operating efficiency of the humidifier. DO NOT use any metal or hard objects to clean the Heating Element. Never use detergents, gasoline, kerosene, glass cleaner, furniture polish, paint thinner or other household solvents to clean any part of the humidifier.

Remove Scale: Allow to cool before maintenance.
1. Repeat steps 1-5 in the Daily Maintenance section.
2. Clean the tray by partially filling the base with one 8 oz. cup of undiluted white vinegar. Let solution stand 20 minutes, cleaning all interior surfaces with a soft brush. Dampen a cloth with undiluted white vinegar and wipe out entire base to remove scale.
3. Rinse with clean warm water to remove scale and the white vinegar solution before beginning to disinfect the tank.
4. Wipe the heating element clean with a soft cloth after it has had a chance to cool.

Disinfect Tank:
1. Fill tank with 1/2 teaspoon of chlorine bleach and 1/2 gallon of water.
2. Let the solution stand for 20 minutes, swishing every few minutes. Wet all surfaces.
3. Empty the tank after 20 minutes, and rinse well with water until the bleach smell is gone. Dry with a clean cloth of paper towel.
4. Refill the water tank with cool water; replace the housing and water tank. Repeal ALL Operating Instructions.

Jan 22, 2012 | Sunbeam Humidifiers

1 Answer

My Vick's Warm Mist V74A was absolutely lovely when I purchased it (May of June of 2010). However, I CAN ADMIT (because I'm sure majority of people are not) that I have not cleaned it since or read my...

The simplest and easiest way to clean the interior workings of the unit is to fill the tank with a 50/50 solution of White Vinegar and Bottled Distilled Water. Run the unit for an hour. Turn it OFF for 30 minutes and the run it again, until the tank is almost empty and turn the unit OFF. Empty the remaining solution and refill the tank with Bottled Distilled Water. Turn the unit ON and operate it for at least 45 minutes to an hour. This will flush out all of the remaining solution.

What you saw before before cleaning the unit, was a build up of mineral deposits and scale from the tap water that you used. In the future, I would highly recommend that you use Bottle Distilled Water, rather than tap water. That way, you won't have to flush the unit as often and you'll be using water that is mineral free.

Hope this helps you solve the scale and mineral deposit problem. Please don't forget the rate my response to you. Thanks!

Apr 14, 2011 | Vicks Warm Mist V745A 1 Gallon Humidifier

2 Answers

How do I clean / sanitize my sunbeam humidifier swm5250 with bleach?

I'm no expert, but a friend of mine loaned me her humidifier recently and she just put some bleach and water in the tank and cleaned the tank with that. It did leave a smell of bleach in the tank that could be smelled any time it ran, but after a few refillings, it went away, and I figure if it smells there must be a little left, which means it should clean the working parts fairly well too. (while you're running it the first few times) And the medicine tray in the SWM5250 is dishwasher safe, so I would just run that through the dishwasher, but bleach should be fine for that too.

Jan 27, 2011 | Sunbeam Humidifiers

1 Answer

After cleaning everything the humidifier no longer runs. When I turn it on no matter what level I set the desired humidity to the green light goes on indicating that it is at the desired humidity. Before...

The humidstat controler has failed. By cleaning the humidfier you introduced moisture into the system. Dry the humidstat controler with a hair dryer and try the humifier again. If the unit still does not shut off at maxium setting. Replace the humidfier controler.

Jan 26, 2011 | Hunter 32300 Humidifier

2 Answers

How to clean air-o-swiss humidifier?

Gererally according to the booklet in the box.
If you no longer have those instructions, simply clean out the
basin, make sure no mold, dust, hardwater or calcium is deposited.
Use a 10% bleach water solution to kill bacteria, and thats is basically it.
Just dont miss any spots, but humdifiers should be cleaned every few uses.

Feb 19, 2010 | Air-O-Swiss 7133 Humidifier

2 Answers

I need to know how to clean the base of my humidifier.

ask at
They will find it for you.

Dec 19, 2009 | Sunbeam Health at Home Warm Mist...

4 Answers

Venta 207 digital humidifier

Caring For Your Venta-Sonic Humidifier
Always unplug the unit before cleaning!
When to Clean Your Humidifier
 Clean your humidifier weekly or more often during heavy use, depending on your
individual water quality. Clean your humidifier before storing and after long periods
of storage.
 When cleaning the inside of your unit, keep water away from the air outlet. Exterior
may be wiped with a damp cloth when unit is off and unplugged.
Cleaning the Oscillator and Water Sensor
 Turn off the unit and unplug power cord. Remove tank from base and empty
reservoir in base. Use cleaning brush provided in base to clean off mineral deposits
and sediment from oscillator and water sensor. Do not scrape or clean with tools
that have metal parts. Be careful to not damage the surface of the oscillator.
ATTENTION: Damage to the oscillator may cause the unit to not work properly.
 The oscillator (ultrasonic transducer) is highly sensitive. Keep this important part
clean and treat gently. Do not touch the oscillator while the unit is operating.
 Do not use soap, cleaning agents, detergents, or other chemicals for cleaning the
tank and humidifier.
 After cleaning fill water tank (see instructions above) and return tank to base.
Storing the Venta-Sonic
Switch off and unplug power cord from A/C outlet. Empty remaining water from base
and tank. Clean tank and unit (see for instructions above). Make sure all parts are
thoroughly dry—allow at least 24 hours to dry. Leave the filling cap of the tank
loosened. This will keep the cap and gasket from sticking together. Pack Venta-Sonic
in original packaging and store in a cool and dry place.

You can find your manual at this link:

Good Luck.

Apr 03, 2008 | Venta VS 100 Humidifier

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