Cleaning, Troubleshooting guide – Guardian Technologies H965 User Manual
Page 5

If scale becomes difficult to remove with brush:
1.	Fill	the	Base	with:	mixture	of	1	tsp.	white	vinegar	and	1	tsp.	water.
2. Let solution stand for 5 minutes.
3.	With	the	vinegar	in	the	Base,	clean	all	interior	surfaces	with	a	soft	cloth	or	brush	to	help	
 remove scale.
4.	Also	check	mist	nozzle	and	mist	tube	in	water	tank.	Clean	as	needed.
5.	Rinse	the	Base	thoroughly	with	water	to	remove	scale	and	vinegar	solution.
Are minerals in your water producing white dust?
Try Decalcification Cartridge
FLTDC30
Look for cartridge
3
at your local retailer or visit
www.guardiantechnologies.com
END OF SEASON STORAGE
• Follow the Cleaning and Descaling instructions when the humidifier will be stored at the end
 of the season.
•	Dry	the	humidifier	completely	before	storing.	DO	NOT	store	with	water	inside	the	Base	or	
 Water Tank.
•	Pack the unit in its original carton and store in a cool, dry location. 
NOTE: IF YOU EXpERIENCE A pRObLEM DO NOT ATTEMpT TO OpEN THE MOTOR
HOUSING YOURSELF. DOING SO MAY VOID YOUR WARRANTY AND CAUSE DAMAGE
TO THE HUMIDIFIER OR pERSONAL INJURY.
E-8
E-9
CLEANING
pRObLEM
SOLUTION
Water vapor and humidity are
not produced.
Power Plug: Unplug and then try again.
Power Failure: When the power is returned, try again.
Tank Installation: Make sure the tank is correctly attached.
The surface of the ultrasonic disk is dirty: Clean ultrasonic disk. 
(see pg. E-8)
Air blows but water vapor is
not produced.
Excessive Water: Remove a certain amount of water from
the tank.
The desired humidity is lower than the current temperature: 
Increase the desired humidity.
Detergent	residue	and/or	oil	ingredients	from	cosmetics, etc may 
be in tank; wash out tank and try again.
The surface of the ultrasonic disk is dirty: Clean ultrasonic disk. 
(see pg. E-8)
If you use hard water, replace with softer water.
Humidity level is low.
The surface of the ultrasonic disk is dirty: Clean ultrasonic disk.
(see pg. E-8)
The water in the unit is too cold: Replace with cool, but not 
cold water.
Damage	on	the	ultrasonic	disk:	Contact	Customer	Service	
1.866.603.5900
The humidity has a bad smell.
Poor maintenance or dirty water: Clean the product thoroughly, and
fill it with fresh water. (see pg. E-8)
White dust is forming on
nearby furniture.
Hard water may deposit a certain amount of dust. Dust in the air
also settles because of added humidity in the room. Use distilled
water if this becomes a nuisance.
*	Decalcification	Filter	(FLTDC30)	available	at	 
www.guardiantechnologies.com or through Customer Service
1.866.603.5900.
Unit has stopped working.
No or low water. Unplug unit and refill tank.
Water is accumulating outside of unit
or area surrounding unit.
Saturation of humidity. Lower mist control setting.
Unit not level and water is accumulating. Unplug and place on 
level surface. Point spray away from objects. Raise unit on a
water-resistant level surface 2-3 feet off of floor.
Water dripping when refilling.
Water remaining on bottom of tank. Wipe tank or tilt to drain
before transporting.
Increased noise level.
Unit must be placed on a flat, level, hard surface. Make sure it is
NOT placed on a soft or absorbent surface.
TROUbLESHOOTING GUIDE
