What SB Means
SB (or Sb) on a Frigidaire refrigerator is not an error. It means Sabbath Mode is on, which runs the appliance with lights, alarms and some displays off to comply with religious observance guidelines.
Common Causes of SB
- Sabbath Mode turned on intentionally or by accidentally holding the key combination
🔧 One Safe Check You Can Try
If you did not mean to turn it on, follow your manual: on many models you press and hold the minus and Temp F-C keys together for about 5 seconds to switch Sabbath Mode on or off.
⚠ Why You Shouldn't Go Further Than That
- None — normal operating mode, no repair needed.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.