Error code
Frigidaire-built Kenmore refrigerator signal SB
SB is an indicator rather than an error. Frigidaire publishes it for the refrigerator this badge covers, and it means: Sabbath mode — Frigidaire's wording is that it makes the appliance function with minimum power to conform with religious observance.
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What we can confirm
Signal SB, from the manufacturer's own documentation
This code has no number, because this equipment has no display to put one on. The appliance signals it instead — an alarm, a symbol or a pattern of lights — and what it means is recorded in the documentation that ships with it.
The signal
SB
Sabbath mode — Frigidaire's wording is that it makes the appliance function with minimum power to conform with religious observance.
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What it narrows down to
Sabbath mode — Frigidaire's wording is that it makes
Diagnostic
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On the same appliance
What else belongs to the refrigerators
On this make a code belongs to the appliance rather than to a product line. These are the other conditions this machine can display, and the models that can show this one — a display often has more than one thing to say, and the model number decides what any of it costs to put right.
Other codes this appliance can display
Whirlpool's own wording: the power outage indicator tells you
The alarm sounds when a door or the freezer
Whirlpool's own thresholds: it alerts when the refrigerator rises
Whirlpool's wording: the refrigerator and freezer will not cool
The filter status light telling you the water filter is due
The air filter status, in three stages: blue is
Whirlpool publishes the fact that an F is flashing
A freezer fan problem
A refrigerator fan problem — the same class of
A defrost heater circuit problem
A sealed-system problem — LG's published meaning is a
Sabbath mode
The same digits mean different things on different equipment. Search the full code list
In more detail
About Frigidaire-built Kenmore refrigerator signal SB
Whose code this actually is
Kenmore did not write SB, because Kenmore has never built an appliance. This one is Frigidaire's, and it appears on the refrigerator that Frigidaire built and Sears sold under the Kenmore badge. Four different manufacturers built refrigerators under this badge, and several of them use an F with a number for unrelated conditions. That is the single most convincing way to reach the wrong component.
What the appliance is telling you
Sabbath mode — Frigidaire's wording is that it makes the appliance function with minimum power to conform with religious observance.
This one is an indicator rather than an error. It is published in the same table as genuine problems, and treating it as one is how a working appliance gets a service call.
Which Kenmore models can raise it
The Kenmore refrigerator whose model number begins 253 — the three digits before the period on the rating plate. Those digits are Frigidaire's, which is why Frigidaire's table is the one that applies to SB and no other manufacturer's does.
The other ways it may be written
The same condition is published under more than one label, because it has been carried across generations of the appliance and because a segment display draws some characters oddly: Sb, SB SB. They are the same finding and they lead to the same place.
Worth trying yourself, in this order
- Follow the manual's exit procedure.
- It is easy to enter by accident on some panels, and the cabinet behaves oddly rather than obviously wrongly while it is on.
Where this usually goes
The job this most often becomes is diagnostic visit, and that page carries a starting figure and the reasons that move it. A Kenmore refrigerator in this humidity hands its defrost circuit more work than it was sized for, and in a Miami kitchen a floor-level condenser blocks well ahead of any published interval. Photograph the display before you cut the power: a reset clears SB, and on a Kenmore the characters plus three digits off the plate are most of the diagnosis.
Where this meaning came from
Frigidaire's own documentation: Refrigerator Error Codes and Alarms, Frigidaire owner support. Kenmore publishes none of its own, which is why every entry on this site names the manufacturer's document instead.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards