Frigidaire refrigerator error codes: most of them are a door left open, a power blip, or one fan.

Not a fault by itself. The freezer went above 26°F or the fresh-food section above 55°F for over an hour — a door left open, a long outage, or a box still pulling down after it was first plugged in.

1. Both doors and the freezer drawer are shut and nothing inside is holding one open — a bag, a shelf pushed out, a bin not seated.
2. The gaskets seal: close a dollar bill in the door and pull; it should drag all the way around.
3. The box is cooling: a hand on the back wall of the freezer feels cold and the fan runs when the door switch is pressed.
4. A refrigerator just installed or just moved needs 24 hours to reach temperature; the alarm clears on its own.

Press Alarm Reset to mute it; it stays lit until the section is back in range, then goes out by itself. A box that is cold at the back and still warm up front is airflow — pull the freezer out and let the air through. A box that never gets cold with the doors shut is a fault, not a state — see SY EF, or a sealed-system call.

Not a fault. The power went out while the refrigerator was running; the light or the letters stay on so you know the food sat warm for a while.

1. Press Alarm Reset (or Set) once the power is back. If the outage was long, the high-temp alarm shows too — it clears once the box is cold again.

Nothing to fix. PF with no outage is a loose plug or a breaker that is tripping — check the cord at the wall.

Not a fault. The display shows Sb and the lights, the dispenser and the tones are off; cooling continues and the high-temp alarm stays active.

1. Press and hold the – (minus) key and the Temp °F/°C key together for 5 seconds; the display returns to the temperatures.

The refrigerator is back to normal. On a model with a different panel, the manual names the two keys, held 5 seconds.

Not a fault. The display works, the lights work and nothing cools — the showroom mode that lets a store show the controls without running the compressor.

1. Unplug the refrigerator for 5 full minutes and plug it back in; demo mode drops and the compressor starts.

Give it 24 hours to reach temperature. If 77 77 comes back on its own, the control is being told to demo by a stuck key — a technician's look.

Not a fault of the machine. A cube has been stuck in the dispenser chute too long and the control is telling you to clear it.

1. Open the freezer door (or the ice-bin door) and look up into the chute with a flashlight; push the stuck cube through from inside.
2. Pull the ice bin out, let any fused ice melt in the sink, dry the bin and put it back the way it came out.

The alarm clears once the chute is empty. Ice that keeps fusing in the bin is a freezer door standing open a crack, or ice sitting unused for weeks — dump the bin now and then.