What this code means
SB on a Frigidaire refrigerator display means Sabbath Mode is active. This is not a failure code. Sabbath Mode is a feature that disables portions of the refrigerator and its controls for observance of the Sabbath and religious holidays. While the mode is on, the display shows “Sb” and lights, the dispenser, and most of the control panel will not operate.
The refrigerator continues cooling normally in Sabbath Mode, and the high-temperature alarm remains active for food safety even though other functions are disabled. Customers commonly mistake the inactive lights, dispenser, and display for a malfunction, but the code indicates an intentional mode state. The unit can remain in Sabbath Mode after a power failure until you manually deactivate it from the control panel.
Before You Replace Anything
Homeowners often call for service thinking the control board or dispenser has failed. Before replacing anything, simply verify the display shows ‘SB’ and try the button sequence to deactivate Sabbath Mode.
Common Causes
- Accidental button press The model-specific key sequence for Sabbath Mode was entered unintentionally, often by children or when cleaning the panel.
- Power failure recovery The refrigerator can remain in Sabbath Mode after power is restored until you manually deactivate it.
- Intentional activation forgotten A household member activated Sabbath Mode for a religious observance and the mode was not deactivated afterward.
Step-by-Step Fix
- Verify the display shows SB. Confirm the code reads “SB” or “Sb” and not a different fault code such as “H” or “OP.”
- Check for Sabbath Mode behavior. Open the door and verify that interior lights do not turn on, the dispenser does not respond, and most control panel buttons are inactive. Confirm you can still hear the compressor running or feel cold air, since cooling continues in Sabbath Mode.
- Locate your model-specific button combination. Frigidaire documents that the exact deactivation sequence depends on the model. One documented method is to hold the ”−” and “Temp F-C” buttons together for 5 seconds. Another documented example for some models is to hold specific freezer and refrigerator keys together for about 7 seconds. Check your owner’s manual or the Frigidaire support site for your exact model number.
- Hold the buttons for the required time. Press and hold the correct combination for 5 to 7 seconds without releasing. The display should change and the SB code should disappear.
- Confirm normal operation returns. After the SB code clears, verify that interior lights turn on when you open the door, the dispenser works, the control panel responds, and the temperature display shows normal readings.
- If SB remains after a power outage, repeat the deactivation sequence. Frigidaire states the unit can stay in Sabbath Mode after power is restored until you manually deactivate it from the control panel.
- Document the button sequence for future reference. Write down the exact button combination and hold time for your model so you can quickly deactivate Sabbath Mode if it is accidentally activated again.
Parts Often Needed
| Part | Notes |
|---|---|
| Owner’s Manual (model-specific) | Amazon | Download from Frigidaire support site if you do not have the printed manual. Contains the exact Sabbath Mode button sequence for your model number. |
When to Call a Pro
No professional repair is needed for the SB code. Sabbath Mode is a normal feature, not a failure. If the code does not clear after you follow the correct model-specific deactivation steps from your owner’s manual, contact Frigidaire customer support or a technician to verify the control interface and obtain the exact button sequence for your model. Do not replace the control board, thermistors, or any sealed-system components based on the SB indication alone. If the refrigerator does not cool properly after you deactivate Sabbath Mode, then call a technician to diagnose the separate cooling fault.