it keeps saying the basket is full when it's only half full of ice, how do i fix the sensor?

Diagnosis

The Silonn SLIM01 utilizes a pair of infrared (IR) sensors located on the interior ceiling of the ice chamber to detect when the basket is full. One sensor emits an IR beam, and the other receives it. When ice cubes pile up high enough to break this beam, the circuit is interrupted, triggering the "Ice Full" indicator and halting the freezing cycle. A false "full" reading occurs when the IR beam is blocked by something other than a full basket of ice. This is most commonly caused by condensation droplets clinging to the sensor lenses, frost buildup on the interior ceiling, or mineral deposits (limescale) from hard water that have clouded the plastic lens. In some cases, a stray ice cube may be leaning against the side wall, protruding upward and breaking the beam even though the overall volume of the basket is low. You can confirm this by emptying the basket entirely; if the "Ice Full" light remains on even when the chamber is empty, the sensor is either dirty or malfunctioning.

How to Fix It

To clear the sensor and restore normal operation, follow these precise steps:

1. Disconnect the power cord from the wall outlet to ensure safety and allow any frost on the interior ceiling to begin thawing.
2. Remove the ice basket completely and dump all remaining ice. Ensure no small shards of ice are stuck in the corners of the main housing.
3. Locate the two small, circular plastic windows on the ceiling of the interior chamber. One is the emitter and one is the receiver.
4. Dip a cotton swab in a mixture of 50% distilled white vinegar and 50% warm water. Gently scrub both sensor lenses to remove mineral deposits and water spots.
5. Use a clean, dry microfiber cloth to buff the lenses completely dry. Any remaining moisture or streaks can refract the IR beam and cause another false reading.
6. Inspect the surrounding plastic housing for any "frost plumes" or ice bridges that might be bridging the gap between the two sensors. Use a soft brush to clear these away.
7. Reinsert the ice basket, plug the unit back in, and initiate a new cycle.

If That Didn't Work

• Perform a Hard Reset: Unplug the unit for at least 30 minutes. This allows the internal control board to discharge completely and clears any cached error states in the firmware that might be locking the "Ice Full" status.
• Check for Mechanical Obstructions: Inspect the ice basket for any warping or cracks. If the basket is not seated perfectly flush against the bottom of the unit, it can shift the ice cubes upward higher than normal, triggering the sensor prematurely.
• Deep Descale the Unit: If you have hard water, mineral buildup can occur inside the internal plumbing and on the sensor housing. Run a cleaning cycle using a dedicated descaling solution or a strong vinegar solution (1:1 ratio) to remove internal scale that may be affecting the unit's humidity levels and causing excessive condensation on the sensors.
• Inspect the Sensor Wiring: If you are comfortable with basic electronics, check the wiring harness leading to the ceiling sensors. Ensure the connectors are tight and that no wires have been pinched or frayed, which could cause an open circuit that the machine interprets as a "blocked beam."

Heads Up

• Never use abrasive scouring pads or harsh chemical solvents (like acetone or bleach) on the sensor lenses, as this will scratch the plastic and permanently distort the IR beam.
• To prevent future sensor errors, avoid overfilling the water reservoir; excessive water can increase internal humidity, leading to more condensation on the IR sensors.
• Periodically wipe the interior ceiling of the machine with a dry cloth every 2-3 weeks to prevent mineral buildup from hard water.
• Ensure the unit is placed on a completely level surface. A tilted machine can cause ice to pile up unevenly on one side, triggering the sensor while the rest of the basket is empty.