Safety first: Unplug the ice maker and shut off water before working near the ice maker module.

Steps to troubleshoot F3:

Inspect the ice maker module: Remove the ice bin to view the ice maker head. Look for broken or jammed ejector blades and ice buildup.
Clear jams: If ice cubes are wedged in the ejector, gently remove them. Do not use sharp tools that can damage the mold.
Check motor movement: Manually rotate the ejector (if design allows) to feel for binding. Grinding or stiffness suggests internal gear damage.
Test the harvest motor: With the unit unplugged, disconnect the motor and measure resistance. An open circuit indicates a failed motor. Also test the harvest limit switch for proper open/close operation.
Replace the ice maker module or motor: Many Danby built‑in units use a modular ice maker assembly. Replace the entire module or the motor/gearbox as specified for your model.
Reassemble and test: Restore power and water, then observe a full cycle to ensure proper harvest and no F3 error.

Built‑in Danby ice maker shows F3; water fills but ice harvest does not complete.

Possible Causes