Quick answer
On Sub-Zero models with air purification, the air filter indicator means the purification cartridge is due for replacement. Replace the cartridge and reset the indicator. It doesn't affect cooling.
Applies toModels with air purification
Typical fixDIY
Service call$75
What It Means
The air purification system helps reduce ethylene gas, odors and airborne bacteria to keep produce fresh longer. The cartridge has a limited life.
Common Causes
- Cartridge reached its service interval
What You Can Do
- Replace the cartridge.
- Reset the indicator.
What a Technician Does
If the indicator won't reset, we check the control and interface.
Need a Sub-Zero Specialist?
$75 service call, credited toward your repair · 1-year parts · 180-day labor warranty · EPA 608 certified · Mon–Fri 8am–7pm · Sat–Sun 8am–4pm