E2 error on display; ice maker powers on but does not start ice-making cycle or stops shortly after starting.

Safety first: Unplug the ice maker and drain any water before disassembly.

Steps to resolve E2:

• Check water level: Ensure the reservoir is filled to the proper level. Some Costway models will show E2 if the float is reading empty when the tank is dry or overfilled.
• Inspect the float: Remove the top cover or side panel to access the water reservoir. Locate the plastic float or magnetic float assembly. Move it up and down by hand; it should move freely without sticking.
• Clean mineral deposits: If the float is stiff or coated with scale, clean it with a soft brush and a 1:1 mixture of white vinegar and warm water. Rinse thoroughly and ensure it moves smoothly.
• Check the float switch / sensor wiring: Follow the float wires to the control board. Confirm the connector is fully seated and that there are no broken or pinched wires.
• Test the float switch (if accessible): With a multimeter set to continuity, disconnect the float switch and test it while moving the float. It should open and close reliably. Replace if it does not change state.
• Replace faulty parts: If the float is damaged or the switch is defective, install a new Costway water level float switch / sensor assembly compatible with your model.
• Reassemble and test: Reinstall covers, refill the reservoir, plug in the unit, and run a test cycle to confirm the E2 code is cleared.