E7 error code; unit may not detect water level correctly, sometimes overfilling or stopping with water in the tank.

Safety first: Unplug the unit and empty the water reservoir before working on the level sensor.

Steps to resolve E7:

• Locate the sensor: Depending on model, Silonn ice makers use either a float switch or electronic water level probes in the reservoir.
• Clean the float or probes: If there is a float, move it up and down to ensure it is free. Clean any mineral buildup with a soft brush and a mixture of water and white vinegar. For probes, gently wipe them clean.
• Check movement: Make sure the float can travel its full range without hitting the tank walls or wiring.
• Inspect wiring: Follow the sensor wires to the control board. Ensure connectors are tight and wires are not broken.
• Test operation: Refill the reservoir and restart the unit. If E7 persists, the sensor may be defective.
• Replace sensor: Install a new water level sensor assembly or float switch as specified for your Silonn model.

When to call a professional: If sensor replacement requires significant disassembly or you suspect a control board fault, contact a technician.