Use and Care Guide
subzero.com | 15
Product Operation
To replace the air purification cartridge:
1  To access the air purification cartridge, slide the door 
to the left.
2  Grasp the black cover from the top and rotate down-
ward. The cartridge pops out and can be removed. 
Refer to the illustration below.
3  Remove the new cartridge from packaging and insert 
with the connector pointing downward.
4  Close the black cover, then slide the door to the right.
5  Follow the instructions on the control panel. The car-
tridge life cycle resets for approximately one year.
AIR PURIFIER
Air purification cartridge
Air Purification System
Many fresh foods emit ethylene gas, a naturally-occurring 
compound that hastens food ripening and spoilage. If your 
unit is equipped with an air purification system, the car-
tridge has been factory installed and is located on the back 
wall of the refrigerator.
To turn on air purification, touch 
 on the options screen.
 CAUTION
The air purification system complies with applicable 
federal requirements regarding incidental exposure 
to ultraviolet light. Lamp contains mercury. Manage 
in accordance with disposal laws. Visit earth911.com 
or call 800-222-7820.
AIR PURIFICATION CARTRIDGE
The air purification cartridge lasts approximately one year. 
"Snooze/Refresh" appears on the control panel when the 
cartridge needs to be replaced. Touch “Snooze” to delay 
the reminder for 24 hours or until the cartridge can be 
replaced.
Replacement Sub-Zero air purification cartridges can 
be ordered online at subzero.com/store. For questions, 
contact Sub-Zero Customer Care at 800-222-7820.










