Error Code EC24 on a Sub-Zero ice maker machine typically indicates a problem with the water supply. Here’s what you can do to diagnose and potentially resolve this issue:

1. Check Water Supply Line: Start by inspecting the water supply line connected to your ice maker. Ensure that it is properly connected and that there are no kinks or obstructions in the line.

2. Water Inlet Valve: The error could be related to a malfunctioning water inlet valve. This valve controls the flow of water into the ice maker. Check if it is functioning correctly, and replace it if necessary.

3. Water Pressure: Insufficient water pressure can also trigger EC24. Make sure that the water pressure to the ice maker meets the manufacturer’s specifications. Low water pressure can result in slower ice production.

4. Water Filter: If your Sub-Zero ice maker has a water filter, it may be clogged. Replace the water filter as recommended by the manufacturer to maintain water quality and proper ice production.

5. Professional Assistance: If you’ve checked the water supply line, inlet valve, water pressure, and filter, and the EC24 error persists, it’s advisable to contact a Sub-Zero service technician. They can perform a more in-depth diagnosis and address any underlying issues with your ice maker.

Remember that working with water and appliances can be potentially hazardous, so exercise caution and, when in doubt, seek professional assistance to ensure safety and proper repairs.