Air O Swiss Humidifier AOSU600 User Manual

PLEASE READ AND SAVE  
ALL INSTRUCTIONS!  
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LAS INSTRUCCIONES!  
AOSꢀU600/U650  
 
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Instructions for use (5 – 22)  
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Instructions d’utilisation (23 – 40)  
Instrucciones para el uso (41 – 57)  
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Instructions for use  
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PLEASE READ AND SAVE ALL THESE INSTRUCTIONS!  
Important safety instructions  
• Do not touch the water in the base during operation  
• The use of water additives, such as ethereal/essential  
oils, fragrances, eucalyptus, water conditioners etc.,  
damages the tank material and as a consequence  
the whole unit. Any use of such additives will void the  
manufacturer’s warranty.  
• Remark: Neither humans nor animals can hear the high  
frequency vibrations.  
• Prior to using the appliance, read through the in-  
structions for complete use and retain in a safe place  
for later reference.  
because of high frequency vibrations in the water.  
• Do not run power cords under carpets, and do not co-  
ver with throw rugs. Arrange cord so that it will not be  
tripped over.  
• WARNING – Only use the Ultrasonic indoors and within  
the specified technical data. Improper use can be  
hazardous for the health and lead to critical injury.  
• Connect the unit only to alternating current with  
voltage according to the rating label.  
• Never pull the plug from the outlet by the cable or with  
wet hands.  
• Do not use the appliance where combustible gases or  
vapors are present.  
• Children cannot recognize the hazards associated  
with the usage of electrical appliances. For this reason,  
always supervise children when they are near the  
humidifier (image 1).  
• Never use the appliance if there is any damage to the  
appliance or cable (2), after malfunction, after the  
appliance has been dropped (3) or damaged in any  
other way.  
• Repairs of electrical appliances are only to be made by  
qualified service engineers (4). Improper repair work  
can cause considerable danger to the user.  
• Place the humidifier on a dry, level surface (5).  
Do not place the appliance directly on the floor or  
next to a heating vent (6).  
• Do not expose the appliance to rain, or use near water,  
in a bathroom, laundry area or other damp location.  
• This unit must be used in its upright position.  
• Do not allow foreign objects to enter ventilation or  
exhaust opening as this may cause electric shock or  
damage to the appliance. Do not block air outlets or  
intakes.  
• Do not pour water into the mist outlet of the appliance.  
• This appliance has a polarized plug (one blade is wider  
than the other). To reduce risk of shock, this plug is  
intended to fit in a polarized outlet only one way. If the  
plug does not fit fully in the outlet, reverse the plug. If it  
still does not fit, contact a qualified electrician. DO NOT  
attempt to defeat this safety feature.  
• If the mist comes in contact with the floor prior to  
evaporating, the floor surface can become damaged.  
We do not accept any liability for damages in the case  
of incorrect placement of the unit.  
• The unit should be placed in an elevated position (7),  
e.g. on a table, chest of drawers, etc.  
• A loose fit between the plug (receptacle) and the  
AC outlet may cause overheating and a distortion  
of the plug. Contact a qualified electrician to replace  
loose or worn receptacles.  
• Do not sit, stand or place any heavy objects on the  
appliance.  
• Place appliance where it is not easily knocked over (8).  
• Always unplug when not in use.  
• Only operate the humidifier when it is completely  
assembled.  
• ALWAYS unplug before removing/filling/emptying the  
water tank, before cleaning/maintaining, assembling/  
dismantling of individual parts and before moving the  
appliance.  
• Do not submerge the main body in water or other  
liquids.  
• Disconnect power supply before servicing.  
• Persons who are not familiar with the instructions  
for use, as well as children and persons under the  
influence of medication, alcohol, or drugs are not  
permitted to operate the appliance, or are only per-  
mitted to operate it under supervision.  
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Foreword  
Unpacking  
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Congratulations on choosing the Ultrasonic Humidifier  
AOS U600 / U650 from AIR-O-SWISS!  
• Carefully remove the humidifier from the box. Place  
your hands underneath the product to pull it out of the  
box (10).  
Did you know that dry room air:  
• Warning: Do not take the unit out of the box by pulling  
up on the tank handle - base may fall and will be da-  
maged (11).  
• Remove the plastic bag from the humidifier.  
• Observe the information given on the rating plate about  
the voltage.  
• Causes the membranes in your respiratory system to  
dry out, and also causes chapped lips and stinging  
eyes?  
• Encourages infections and illnesses of respiratory  
system?  
• Causes weariness, tiredness and poor concentration?  
• Stresses household pets and house plants?  
• Encourages the formation of dust and the electrostatic  
charging of textiles made of synthetic fibers, carpets  
and plastic flooring?  
• Damages furnishings made of wood and parquet?  
• Detunes musical instruments?  
• Use the original packaging for storing the appliance if  
you do not use the humidifier all year round.  
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General information  
A comfortable atmosphere indoors is reached with a rela-  
tive humidity level between 40 and 60%. Your humidifier  
automatically controls the humidity level according to the  
desired setting. If the air is too dry, the humidifier will auto-  
matically switch on. As soon as the desired humidity level  
is reached, it will switch off.  
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Description of the appliance  
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Mist outlet (rotating)  
Water tank  
Evaporation chamber  
Brush  
Demineralization cartridge  
Water tank cap  
Ionic Silver Stick®  
Membrane  
Nebulizer space  
Control panel  
Main body  
Power Plug  
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Setting up  
• On average the demineralization cartridge should be  
replaced every 2 – 3 months depending on your water  
hardness. Some areas may need to replace the cart-  
ridge sooner, some may last longer. The cartridge must  
be exchanged at the latest after 6 months or the unit  
does not reach its full performance anymore.  
See «Replacement of the demineralization cartridge».  
• Read the instructions under «Filling the Tank» for  
adding water in the humidifier (14 and 15).  
• Place the water tank onto the base.  
• Insert the plug into the socket and switch on the  
appliance using the on/off dial (18 and 19).  
• About 10 to 15 minutes after it is switched on the de-  
vice will reach its full output level.  
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Finding the ideal location for your unit:  
• Do not place the humidifier directly next to a heating  
vent or on a floor with floor heating. The moisture of  
the mist can damage the floor surface (6) (see Safety  
Instructions).  
• The unit should be placed in an elevated position (7),  
e.g. on a table, chest, etc. at least 3 ft off the floor.  
• The mist outlet must not be pointed directly at  
plants, furniture, or other objects (12). Keep distance of  
at least 20 inches (50cm).  
• Soak the demineralization cartridge in a water bath  
24 hours before using it (13). The granules have to ab-  
sorb water to reach high performance. If the cartridge  
is soaked in the tank, make sure to exchange the water  
and empty the water from the base before using the  
humidifier.  
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• Make sure that the cable is not pinched anywhere (9).  
Do not operate the humidifier if the cable is damaged  
(2).  
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Filling the tank  
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18  
19  
Always unplug the unit before removing the  
water tank. Do not touch the water in the base  
during operation!  
Do not operate the humidifier when the water tank is  
empty! When the water reaches the minimum level, the  
unit switches off the nebulizer function automatically. The  
empty indicator light comes on showing tank is empty.  
• Remove the water tank from the base and unscrew the  
water tank cap (14).  
• Make sure that no foreign objects are in the water  
tank.  
• Fill the tank with clean, cold water from the tap (15).  
Close the cap of the water tank securely, place the wa-  
ter tank onto the base (16). The water is now running  
from the tank into the base.  
• Do not pour water into the mist outlet of the appliance  
(17).  
• Insert the plug into the socket (18) and switch on the  
appliance using the on/off dial (19). The empty indi-  
cator light may stay illuminated for some seconds  
until the base is filled with water.  
Do not use additives  
Water additives (ethereal/essential oils, fragrances,  
eucalyptus, water conditioners, etc.) must not be used!  
Even a small amount can cause cracks in the material.The  
material isn’t made for the use of such additives. One drop  
is enough to damage the tank and as a consequence the  
unit. Any use of such additives will void the manufacturer’s  
warranty.  
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Operation AOS U600  
C) Operation with pre-heating (warm mist)  
Button C is used for switching the pre-heating on and off  
(symbol D lights up). As a result, the water is pre-heated  
to a temperature of 176 °F (80 °C) before entering the  
nebulizer space. It takes approx. 10 to 15 minutes for the  
water in the base to warm up. The mist now leaves the  
humidifier at a pleasant temperature of 104 °F (40 °C).  
The advantage of this is that the room temperature does  
not drop and,in addition,it significantly improves the water  
quality maintenance.  
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B E  
D A  
D) Pre-heating indicator (On/Off)  
C
E) Empty indicator (red)  
The water level is easy to see, thanks to the transparent  
water tank. The appliance also alerts you when the wa-  
ter tank is empty. The red empty indicator is illuminated  
(symbol C). Please read the chapter «Filling the tank» for  
more information. The red symbol C may stay illuminated  
for some seconds with a refilled tank until the base is filled  
with water.  
A) On/Off Dial and regulation of mist output  
Turning the right-hand rotary dial clockwise switches the  
appliance on and at the same time regulates the mist out-  
put from low to high.  
B) Hygrostat (setting the humidity level)  
The desired humidity level can be set by turning the left-  
hand rotary dial clockwise. A relative humidity of between  
40% and 60% is recommended. You can achieve this level  
by rotating the dial until it is roughly in the vertical posi-  
tion. The measurement accuracy is +/- 5%. As soon as the  
humidity exceeds the desired setting, the appliance swit-  
ches off. The appliance does not switch off if the dial is  
turned all the way to the right.This activates the continuous  
operation function.  
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Operation AOS U650  
C) Timer  
G) Timer Indicator  
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Using button C, the operation time can be set adjusta-  
ble between 1 and 8 hours or CO (continuous operation).  
Symbol G shows the operating period that has been set  
(1h/2h/3h/4h/5h/6h/7h/8h/CO). The display will automati-  
cally show the current humidity after a few seconds.  
H) Mist Output Indicator  
I) Pre-heating Indicator  
J) Automatic Mode Indicator  
K) Sleep Mode Indicator  
B
L G H  
M
D
D) Mist output (regulating mist output)  
By repeatedly pressing button D you can control the mist  
output. Symbol H shows which of the three levels (low/  
medium/high) you have selected.  
TIME  
CURRENT DESIRED  
L) Empty indicator  
The water level is easy to see, thanks to the transparent  
water tank. The appliance also alerts you when the water  
tank is empty.The empty indicator is illuminated (symbol L).  
Please read the chapter «Filling the tank» for more informa-  
tion. The symbol L may stay illuminated for some seconds  
with a refilled tank until the base is filled with water.  
E) Operation with pre-heating (warm mist)  
Button E is used for switching the pre-heating on and off  
(symbol I lights up). As a result, the water is pre-heated  
to a temperature of 176 °F (80 °C) before entering the  
nebulizer space. It takes approx. 10 to 15 minutes for the  
water in the base to warm up. The mist now leaves the  
humidifier at a pleasant temperature of 104 °F (40 °C). The  
advantage of this is that the room temperature does not  
drop and, in addition, it significantly improves the water  
quality maintenance.  
I
F E J K  
N C A  
M) Cleaning indicator  
If symbol M «CLEAN» appears on the display, the appliance  
should be cleaned as recommended by the manufacturer.  
This symbol comes on automatically every 2 weeks, de-  
pending on the level of use. The display can be reset by  
holding down button A until the light disappears.  
A) On/Off Dial and Display Dimmer  
By pressing button A once, you can switch the unit on. By  
pressing it twice, the dimmer is switched on which auto-  
matically dims the display brightness and symbol N  
comes on.When changing any settings the display will illu-  
minate for a few seconds before returning to dimmer mode.  
By pressing button A a third time, the unit is switched off.  
This button is also used to reset the cleaning indicator light  
(by holding down).  
F) Automatic mode and Sleep mode  
The automatic and sleep modes can be activated by pres-  
sing button F. By pressing the button once, the automatic  
function is switched on (symbol J appears on the display),  
maintaining the optimum humidity subject to the tempe-  
rature. Control takes place by means of output quantity  
and pre-set target value. By pressing the button twice, the  
sleep function is switched on (symbol K appears on the  
display),the target humidity is 50 – 65%; the operation time  
is set at 6 hours; the heating is switched on and the display  
brightness is automatically dimmed. In addition, the output  
quantity is also controlled subject to the difference between  
the target value and the actual value.  
N) Dimmer Indicator  
Display Dimmer Off  
Display Dimmer On  
B) Hygrostat (setting the humidity level)  
By pressing button B you can set the desired humidity level  
from 30% to 80% or CO (continuous operation). A relative  
humidity between 40 and 60% is recommended. The ac-  
curacy of measurement is +/- 5%. The unit will switch off  
when the moisture level exceeds the desired setting.During  
selection the target value is displayed (symbol DESIRED) .  
The display will automatically show the current value after  
a few seconds (symbol CURRENT).  
For instructions see button A  
The hygrostat and mist output settings cannot be changed  
in either mode. If the buttons B or D are pressed, the unit  
will no longer be in auto or sleep mode.  
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Cleaning/Maintenance  
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Always unplug the unit before removing the  
water tank. Do not touch the water in the base  
during operation!  
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Caution – risk of electric shock and  
damage of the product!  
• Switch off the appliance (20) and unplug it from the  
socket before cleaning it (21).  
• Clean the water tank and the base regularly. Use water  
only, no detergents (22).  
• Use AIR-O-SWISS EZCal custom cleaning and descaling  
agent only to remove deposits from the membrane re-  
gularly (23). There is a sample of EZCal included in the  
packaging of your humidifier. Instructions for using are  
on the packet. Only use 1 packet for 32 oz of water. Do  
not change the ratio. Do NOT run the unit when using  
EZCal. This can cause damage to the product and voids  
the warranty. Thoroughly rinse the base with potable  
water after using EZCal and make sure no EZCal resi-  
dues remain in the base.  
EZCal from AIR-O-SWISS is the only recommen-  
ded cleaning and descaling solution.Do NOT use  
any other cleaning solutions since it can damage  
the product. Any use of cleaning solutions apart  
from EZCal will void the warranty.  
• Make sure main body is never submerged in water  
(24)!  
• The cleaning indicator still appears on the display after  
cleaning. To reset it hold down the ON/OFF button until  
the clean light disappears.  
• Clean the inner parts with a soft cloth. Do not use any  
solvents or aggressive cleaning agents to clean the  
appliance (25).  
ACID  
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• Only use the brush to clean the membrane. This should  
be done once a week. Only use the soft-bristle portion  
of the brush (26).  
• Change the water in the tank at least once a week if  
water is standing for more than a week.  
• To remove the mist outlet (27): Twist the tabs on the  
mist outlet to either the right or the left. Align the tabs  
and arrow on the mist outlet with the arrows on the  
ring around the mist outlet. Pull up on the mist outlet  
once the arrows are aligned.  
Lifecycle Indicator  
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Your appliance comes with a lifecycle indicator for changing  
the Ionic Silver Stick®. To remind yourself of when you put  
the ISS into operation, please cross the current month on  
the stamp and write the current year on the line provided  
(29).  
Water quality maintenance  
The Ionic Silver Stick (ISS) uses the anti-microbial effect  
of silver to prevent the growth of microbes in the water  
base. It begins to function as soon as it comes into contact  
with water, even if the unit is switched off. The Ionic Silver  
Stick should be changed every year. Look at picture 28 for  
the position of the ISS in the base part of the unit. Do not  
touch the water in the base during operation! Switch off the  
unit first. Contact your local retailer or check our website  
The Ionic Silver Stick® comes with a metallic clip which can  
be removed for the placement in this product type.  
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Replacement of the demineralization  
cartridge  
• Turn the plastic cup and cartridge over and shake until  
all granules are in the cartridge (37).  
• Remove the plastic cup and the pink styrofoam piece  
from the cartridge (38) and retain for future use (the  
refill granules consists of 3 refill bags) (39).  
• Close the cartridge (40).  
• Soak the demineralization cartridge in a water bath  
24 hours before using it (43). The granules have to ab-  
sorb water to reach high performance. If the cartridge  
is soaked in the tank, make sure to exchange the water  
and empty the water from the base before using the  
humidifier.  
• Screw the cartridge on the water tank cap (44).  
• Screw the cartridge on the bottom side of the water  
tank, put the tank on the main body (45).  
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31  
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Always unplug the unit before removing the  
water tank. Do not touch the water in the base  
during operation!  
The water tank is equipped with a demineralization cart-  
ridge. This cartridge has to be replaced every 2 – 3 months.  
If the water is very hard, it may be necessary to replace the  
cartridge earlier. White dust around the device is a sure sign  
that the cartridge needs replacing. If white residue still forms  
around the device after a new cartridge has been inserted,  
please make sure that the water you are using is untreated.  
If the water flows through a decalcification system – such as  
an ion exchanger – (sodium is added to remove calcium) in  
the building before it is used in the humidifier, salt can pre-  
cipitate as white dust around the device.The demineralization  
cartridge or the granules must be exchanged at the latest  
after 6 months or the unit does not reach its full performance  
anymore.  
Placing granules in the center of the cartridge  
allows them to escape in the unit or to clog the  
unit.The unit will no longer operate properly and  
the granules need to be cleaned out thoroughly.  
Option A: replace the granules  
• Remove the water tank from the base and unscrew the  
water tank cap (30).  
Option B: replace the whole cartridge  
• Remove the water tank from the base and unscrew the  
water tank cap (30).  
• The demineralization cartridge is attached to the tank  
cap. Unscrew the cartridge from the cap by turning it  
counter-clockwise (31). Important: do NOT dispose of  
the water tank cap!  
• The demineralization cartridge is attached to the tank  
cap. Unscrew the cartridge from the cap by turning it  
counter-clockwise (31). Important: do NOT dispose of  
the water tank cap!  
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• Open the cartridge (32).  
• Throw the whole cartridge into the waste (41).  
• Unpack the new cartridge (42).  
• Throw the content into the waste (Attention! Disposed  
granules can make the floor slippery!) (33).  
• Place the enclosed pink styrofoam piece in the center  
of the cartridge. Do not push it to the bottom as it will  
be difficult to remove afterwards (34).  
• Soak the demineralization cartridge in a water bath  
24 hours before using it (43). The granules have to ab-  
sorb water to reach high performance. If the cartridge  
is soaked in the tank, make sure to exchange the water  
and empty the water from the base before using the  
humidifier.  
• Screw the cartridge on the water tank cap (44). Close  
tank cap well and place the tank on the main body  
(45).  
• Pour the contents of one refill granules bag into the  
plastic cup that is included with the refill granules pa-  
ckaging (35).  
• Place the empty cartridge with the plug in the center  
onto the plastic cup (36).  
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Storing the appliance for extended periods  
Clean the appliance as described earlier and allow to dry  
thoroughly.Preferably store the appliance in its original box,  
in a dry place away from high temperatures.  
Technical data  
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Electrical voltage  
120 V / 60 Hz  
40 W / (125 W*)  
Power consumption up to  
Humidity output up to  
Suitable for rooms up to  
Dimensions (LxWxH)  
3.5 gallons / 24 h*  
650 sq ft / 60 m2  
Legal notice  
The humidifier is cUL-listed.  
Subject to technical change. The instructions for use are  
protected by copyright © PLASTON AG.  
11 x 9.5 x 14 in  
28 x 24 x 35.5 cm  
Weight (empty)  
Accessories  
8.8 lbs / 4 kg  
Accessories  
Contact your local retailer or check our website www.  
airoswiss.net for re-order information.  
Demineralization cartridge  
Ionic Silver Stick®  
Customer Service  
* when used with pre-heating to 176 °F (80 °C)  
Customer Service (USA) 1-800-336-0326  
Troubleshooting  
Problem  
Possible cause  
What to do  
Unit does not operate  
Power cable not plugged in  
Plug in power cable  
No water in the tank (Empty indicator on)  
Unit needs cleaning  
Fill tank with water and wait 10 min.  
Descale the water base using EZCal  
Replace cartridge or granules  
No mist output  
Demineralization cartridge exhausted  
Demineralization cartridge overfilled  
with granules  
Take out 2 tablespoons of granules and throw  
them away  
Weak mist output  
Water temperature too low  
Set mist output to maximum, after 15 min.  
the humidifier will work properly again  
Mineral deposits on membrane  
Clean membrane using EZCal and brush  
Unit running intermittently  
White dust around the humidifier  
Demineralization cartridge exhausted  
Replace demineralization cartridge or granules  
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General Humidifier Questions  
Q. Why do I need a humidifier when I can just open  
my window?  
Q. There is no fill-line on the water tank, how far  
may I fill it up?  
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Q. Why isn’t there enough moisture in my room?  
A. How often do you run the unit? If the unit is only run at  
night, then during the day the moisture level will drop if  
moisture is not constantly added to the air.  
A. The moisture level within the outside air is not high  
enough to humidify a room. The colder the air the less  
moisture it is capable to hold, and the more the air is  
heated up the percentage of relative humidity is lower.  
Relative humidity means the amount of water vapor in  
the air, compared to the amount the air could hold if it  
was totally saturated. The difference is higher between  
outside and inside temperatures; more humidification  
is needed because of the dry air in the room.  
A. There is no fill line on the water tank, and it may be  
filled all the way to the top.  
Q. What is the purpose of the demineralization cart-  
ridge (DMC)?  
Q. Do you leave your door open or closed when the  
unit is running?  
A. a) By leaving the door open, this allows moisture to  
leave the room and go into other areas of the house.  
If you would like the moisture to stay within one  
specific room you should consider closing the door  
while the unit is running.  
A. b) Wood, leather, carpet, curtains, and other types of  
fabric soak up a lot of moisture, thus not leaving  
enough moisture for the air. If the window is left  
open, then this allows moisture to escape the room.  
Another factor is a lot of times the unit is placed next  
to a heating device. The idea is that the air blowing  
into the room will quickly place moisture around the  
room. Unfortunately, this concept does not work  
because the hot air coming out of a vent will soak  
up most of the moisture, and none of the air within  
the room will receive any.  
A. The DMC removes minerals from the water to prevent  
white dust. The contents of the cartridge need to be so-  
aked for 24 hrs prior to first using the unit so that they  
may fully expand and remove minerals from the water.  
The contents of the DMC have a life of 2 – 3 months.  
The cartridge may need to be replaced more often  
depending on water hardness and how often the unit  
is used. An indication of when the DMC needs to be  
changed can be white dust or reduced amount of mist  
output.  
Q. Where should I place my humidifier?  
A. The unit should be free-standing and not close to a  
wall, window, door, or thermal bridge so that air may  
circulate around the unit.  
Ultrasonic Frequent Questions  
Q. Is it ok to use distilled water with the unit?  
A. For best results with your ultrasonic humidifier use  
distilled or reverse-osmosis water and remove the  
demineralization cartridge.  
Q. Why does it say open/close on the demineralization  
cartridge cap?  
A. Those directions are there in case you decide to use  
the refill option to replace the granules; the purpose is  
for how to open and close the cap. If you did open the  
cap before placing it in the water tank, you will most  
likely notice that there are granules in the water tank  
and the base of the unit. Immediately turn off the unit,  
and empty the water out of the base and the water  
tank. Begin removing all granules from base and water  
tank. Use brush to clean around membrane.  
Caution: Do not dispose of granules in sink! Used  
granules must go in waste!  
Q. I just replaced the contents of the cartridge and  
now have granules everywhere.  
A. First, make sure there are no granules in the middle  
of the cartridge. Placing granules in the middle of the  
DMC allows them to escape in the unit. Immediately  
turn off the unit, and empty the water out of the base  
and the water tank. Begin removing all granules  
from base and water tank. Use brush to clean around  
membrane.  
Q. How much moisture do I need in my room?  
A. Suggested humidity levels are between 40 – 60%.  
Q. What are the effects of too little or too much  
humidity?  
A. Dry air can cause dry skin, static electricity, out of tune  
musical instruments, increased levels of dust (dry air  
causes dust to rise), damage to wooden objects (dry  
out and eventually cracks appear), discomfort, sick-  
ness, and dries out nasal membranes.  
Over-humidifying the air can cause mold and wallpaper  
to peel.  
Caution: Do not dispose of granules in sink! Used  
granules must go in waste!  
Q. I just replaced my cartridge, and the contents and  
water in the base has turned a blue-green color.  
A. This sometimes occurs when the cartridge, or even  
the granules, are replaced. This does not occur with all  
replacement cartridges or granules, and is a reaction of  
water content and the Ultrasonic vibrations. This is not  
an indicator to replace the cartridge.  
Q. The directions tell me not to place the unit directly  
on the floor, why do I have to elevate the unit?  
A. The idea with this unit is to allow one to force humidity  
into the air. Because of this, the carpeting or wood floor  
surrounding the unit may become damp. If the unit is  
19  
 
placed at least 3 feet off the floor, the mist will have the  
opportunity to evaporate before hitting the floor.  
Q. Reset cleaning light (digital models)  
Q. Tank is leaking  
en  
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 approx. after 14 days of plugging in the unit.  
A. Check if there are any hairline cracks. Dropped units or  
water tanks that are cracked will not be covered under  
the warranty. Please contact the retailer the unit was  
purchased from in case your unit arrives damaged.  
Q. Water does not go into the tank.  
A. In order to fill the tank, it must be turned upside down.  
The cartridge is placed on the water tank cap. Do not  
pour water in the tube which is the mist outlet.  
Q. The hygrometer on unit reads a different humidity  
level than external hygrometer.  
Q. Placing the face in the mist  
A. It is not recommended that anybody places their face  
in the mist. It is an electrical product and should not be  
played with.  
Q. White dust is emitted from the unit  
A. White dust particles are minerals that are broken up in  
tiny pieces by the ultrasonic process.  
A. Not all hygrometers are calibrated the same, and most  
are off by +/- 5%. Plus the humidity level is not the  
same in the whole room. The air circulation is different  
in every corner of the room. The unit should not be  
placed near a heating vent or a radiator as the heat will  
absorb all of the moisture.  
Solve the problem:  
Q. No mist / unit is not working / empty indicator  
keeps flashing  
• Soak the demineralization cartridge in a bowl of water  
for a minimum of 24 hours. If the cartridge is soaked  
in the water tank, the water in the tank and the base  
needs to be replaced before using the unit.  
• Exchange the demineralization cartridge after 1-2  
months when you use very hard water (for softer water  
after 2-3 months). No matter how hard your water  
is, exchange the cartridge at the very latest after 6  
months.  
A. Fill up the water tank. Check if water is flowing through  
the demineralization cartridge (attached to the water  
tank cap). If the water tank is full but there is only little  
water in the base it indicates that the water is now  
flowing through the demineralization cartridge.  
• Wait for 15 minutes to allow the mist to come out of  
the unit.  
• If the unit is not working and the empty light is not  
flashing you might have set the desired humidity too  
low and the current humidity level in the room is hig-  
her. That is why the unit switches off automatically.  
• If the empty indicator keeps flashing and the tank is  
full, the water is not flowing through the cartridge.  
Exchange the cartridge or the granules in the cartridge  
after 2-3 months, in areas with hard water exchange  
the cartridge after 1 -2 months. However, the demi-  
neralization cartridge and or the granules must be  
exchanged at the latest after 6 months or the unit does  
not reach its full performance anymore  
• If the granules are new, see the following instructions:  
• Make sure the cartridge and/or granules were soaked  
for 24 hours, dry granules take even longer for water  
to filter through the cartridge and into the base. Next,  
please remove 2 tablespoons of granules from the  
cartridge, and throw them away. When there are too  
many granules in the cartridge it does not allow water  
to flow from the tank to the base.  
Q. Humidity level is not changing or does not reach  
the desired humidity level.  
A. If the water tank needs refilling more than once per  
day, the unit is working properly and the climatic con-  
dition in the room has an influence on the humidity.  
Reasons for low humidity level:  
• Don’t use water from a pre-installed water softener,  
or sodium instead of calcium will be emitted from the  
unit. Use distilled water instead and remove the demi-  
neralization cartridge.  
• For very hard water areas use only distilled water and  
remove the demineralization cartridge.  
• Use Reverse-Osmosis water (R-O water) instead of  
distilled water and remove the demineralization cart-  
ridge.  
• air circulation is very high (air is fully exchanged se-  
veral times per day – the humidifier needs to starts its  
work from scratch)  
• insulation of home (see air circulation)  
• open space with high ceilings (not only the footage of  
the room counts but also the height) – high-rise buil-  
dings require more humidification.  
• open windows – works similar to air circulation (if it is  
very cold outside don’t open the window more than 2  
times per day for 3 minutes)  
Cleaning light is illuminated (digital models)  
Switch off the unit 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 reset-  
ting the unit.  
• big difference between outside temperature and inside  
temperature – the colder the air the less moisture it  
is capable to hold and the more the air is heated up  
the lower is the percentage of relative humidity (=the  
amount of water vapor in the air, compared to the  
amount the air could hold if it was totally saturated)  
• position of the unit - if it is placed close to a door, win-  
dow or air vent. This increases the air circulation.  
20  
 
Q. Water tank cap is too tight to unscrew  
A. This could be a cause of the air pressure within the  
water tank. Depress the spring on the bottom of the  
water tank cap to release air from the water tank.  
Continue to do this until you are able to unscrew the  
water tank cap.  
when starting to use the ISS and write the year on the  
line indicated. Exchange it after one year.  
en  
Q. What is EZ Cal?  
A. There is a sample packet of EZCal included in the  
packaging of your humidifier. EZCal is used for cleaning  
and descaling any of the AIR-O-SWISS humidifiers and  
cleans mineral build-up. EZCal is the only recommen-  
ded cleaning and descaling solution. Do NOT use any  
other cleaning solutions since it can damage the pro-  
duct. Any use of cleaning solutions apart from EZCal  
will void the warranty. Instructions for using are on the  
packet. Only use 1 packet for 32oz of water. Do not  
change the ratio. It can also be used for other humi-  
difier brands. Thorougly rinse the base with potable  
water and make sure no EZCal residues remain in the  
base! EZCal is available at selected retail stores and  
Q. Unit is running intermittently.  
A. How long has it been since the contents of the cart-  
ridge were replaced? If 2-3 months have passed, it is  
time to replace the contents of the cartridge. However  
the demineralization cartridge and or the granules  
must be exchanged at the latest after 6 months or the  
unit does not reach its full performance anymore.  
• If the contents of the cartridge were just replaced there  
are probably too many granules in the cartridge. Re-  
move 2 tablespoons of granules from the cartridge.  
Accessories  
Q. Do I need to keep any parts before I replace the  
demineralization cartridge?  
A. Yes, always keep the water tank cap (this is the piece  
that attaches the demineralization cartridge to the  
water tank).  
Q. What is the Ionic Silver Stick (ISS) and how long is  
it good for?  
A. The Ionic Silver Stick (ISS) uses the anti-microbial  
effect of silver to prevent the growth of microbes in the  
water base. It begins to function as soon as it comes  
into contact with water, even if the unit is switched off.  
The Ionic Silver Stick should be changed every year.  
Q. Placement of the Ionic Silver Stick  
A. Please see picture 28 for instructions.  
Q. Replacement reminder  
A. In each ISS box and on all the new products there is  
an ISS lifecycle indicator. Check the box of the month  
21  
 
en  
22  
 
 
for further information.  
AIR-O-SWISS is a registered trademark of PLASTON Group, Switzerland  
 

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