my vivohome countertop ice maker just keeps running and making ice but never stops, it's overflowing the basket

Diagnosis

The Vivohome Electric Portable Compact Countertop Ice Maker relies on a mechanical infrared or physical lever sensor (depending on the specific model iteration) to detect when the ice basket has reached capacity. When the machine fails to stop, it is because the "Full" signal is never sent to the control board. This happens when the sensor arm is physically obstructed, frozen in the "down" position, or when a layer of frost has insulated the sensor, preventing it from registering the presence of the ice pile. In most cases, the root cause is "ice bridging." This occurs when water splashes onto the sensor arm or the surrounding housing during the harvest cycle and freezes, locking the arm in place. Because the arm cannot pivot upward as the ice fills the basket, the logic board assumes the basket is empty and continues the cooling and ejection cycle indefinitely. You can confirm this by observing the basket; if the ice is piled high but the sensor arm is still pointing downward or is encased in a block of ice, the mechanical trigger is failing.

How to Fix It

To resolve the overflow issue and reset the sensor mechanism, follow these precise steps:

1. Power down the unit by pressing the "Stop/Reset" button and unplugging the power cord from the wall outlet to prevent accidental startup during maintenance.
2. Remove the ice basket entirely and dump all accumulated ice into a sink.
3. Locate the sensor arm—this is the small plastic lever located on the side or rear interior wall of the ice chamber.
4. Using a soft cloth dampened with warm water, gently wipe the pivot point of the sensor arm. If you see any white, opaque frost or ice shards clinging to the arm, carefully melt them with the warm cloth. Do not use a knife or screwdriver to scrape the ice, as the plastic arm is fragile and can easily snap or bend out of alignment.
5. Manually lift the arm upward to the "Full" position and release it. It should snap back down smoothly without resistance. If it feels "gritty," continue cleaning the pivot point with warm water.
6. Wipe the interior walls of the ice chamber to remove any excess moisture that may have caused the initial freeze-up.
7. Plug the unit back in and restart the machine. Ensure the ice basket is seated perfectly flush against the base; if the basket is tilted, it can prevent the ice from pushing the arm up correctly.

If That Didn't Work

• Check for Sensor Misalignment: If the arm moves freely but doesn't trigger the "Ice Full" light, the arm may have bent slightly. Gently nudge the arm a fraction of a millimeter toward the center of the basket. This ensures that as the ice piles up, it makes direct contact with the lever sooner.
• Deep Defrost Cycle: Sometimes internal ice buildup occurs behind the plastic lining, pushing the sensor out of its calibrated position. Unplug the machine for a full 24 hours with the lid open to ensure all internal components are completely thawed.
• Inspect for Debris: Check the area around the sensor for any foreign objects or mineral scale buildup from hard water. Use a solution of 1 part white vinegar to 3 parts water to wipe down the sensor area, removing calcium deposits that might be jamming the mechanism.
• Test the Control Board: If the sensor arm is moving freely and the basket is full, but the "Ice Full" indicator light never illuminates on the front panel, the internal switch may have failed electronically. In this case, the unit requires professional repair or replacement as the sensor is integrated into the main PCB.

Heads Up

• Avoid Overfilling Water: Always fill the reservoir to the "Max" line but never beyond it. Overfilling can cause water to splash onto the sensor arm during the ice-dropping phase, leading to the exact freezing issue described above.
• Regular Descaling: Run a cleaning cycle with distilled white vinegar every 2-4 weeks. Mineral buildup on the evaporator plates can cause irregular ice shapes that fail to push the sensor arm upward.
• Ambient Temperature Matters: If the machine is placed in a very hot environment (like next to a stove), the ice may melt slightly and refreeze around the sensor, causing it to stick. Ensure at least 6 inches of ventilation space around the sides of the unit.
• Manual Intervention: If you are leaving the house for an extended period, always turn the unit off. If the sensor fails while you are away, the machine will continue to run, potentially leaking water onto your countertop as the ice overflows and melts.