the full basket light comes on when the basket is only half full, so it stops making ice.

Diagnosis

The Frigidaire EFIC452-SSRED utilizes an infrared (IR) beam system to determine when the ice basket has reached capacity. This system consists of an emitter and a receiver located on opposite sides of the ice chute. When ice cubes pile up high enough to break the invisible beam of light traveling between these two points, the control board triggers the "Full" indicator light and halts the harvest cycle to prevent ice from overflowing into the internal machinery. The issue occurs when the sensor is "tricked" into thinking the basket is full despite having plenty of room. This is typically caused by a buildup of mineral deposits (scale) from hard water, frozen condensation (frost) on the lens, or a stray ice shard that has become wedged against the sensor housing. In some cases, the clear plastic cover over the sensor becomes clouded over time, diffusing the IR beam and causing the receiver to register a "blocked" state prematurely.

How to Fix It

To resolve the premature "Full" trigger, follow these precise steps to calibrate and clean the optical path:

1. Power down the unit completely by unplugging the power cord from the wall outlet to avoid electrical shorts during cleaning.
2. Remove the ice basket entirely and set it aside.
3. Locate the IR sensors. Look inside the ice chute on the left and right walls. You will see small, circular, clear plastic windows approximately 1/4 inch in diameter.
4. Using a microfiber cloth dampened slightly with distilled water (do not use tap water as it leaves streaks), gently wipe the lens on the left side.
5. Repeat the process for the lens on the opposite side of the chute. Ensure there are no fingerprints, water spots, or film remaining on the plastic.
6. Use a can of compressed air or a soft-bristled brush to blow out any ice chips, dust, or debris trapped in the crevices around the sensor housing.
7. Check for any "ice bridges"—thin layers of ice that may have formed across the chute walls—and carefully scrape them away using a plastic utensil (never use metal).
8. Reinsert the basket, plug the unit back in, and monitor the next three harvest cycles to ensure the light only triggers when the ice reaches the top rim.

If That Didn't Work

• Perform a Hard Reset: Unplug the machine and leave it disconnected for at least 30 minutes. This allows the internal capacitors to discharge and clears the temporary memory of the control board, which can sometimes resolve ghost sensor readings.
• Check for Basket Misalignment: Ensure the ice basket is seated perfectly flush against the bottom of the chassis. If the basket is tilted or not pushed in all the way, it can push ice cubes higher than usual on one side, triggering the sensor prematurely.
• Deep Descale the Interior: If you have hard water, mineral buildup can form a cloudy film inside the chute that is invisible to the naked eye but blocks IR light. Mix a solution of 2 tablespoons of white vinegar with 1 quart of warm distilled water. Use a cotton swab to apply the solution to the sensors, let it sit for 5 minutes, and wipe clean.
• Inspect the Sensor Housing: Examine the plastic surrounding the sensor for any cracks or warping. If the housing has shifted due to extreme temperature swings, the emitter and receiver may no longer be perfectly aligned, causing the beam to miss the target and signal a "full" state.

Heads Up

• Avoid using chemical glass cleaners or ammonia-based products on the sensors, as these can etch the soft plastic lenses and permanently cloud the optical path.
• Always use filtered or distilled water to minimize the calcium buildup that leads to sensor failure.
• Never use sharp metal objects to clear ice from the chute, as a single scratch on the sensor lens will cause the machine to permanently report that the basket is full.
• Empty the ice basket daily; leaving ice to melt and refreeze in the chute can create ice blocks that permanently obstruct the IR beam.