GE Ice Maker Error Code LED flashing 1/2 second

This flashing pattern means the ice maker's harvest cycle has exceeded 16 minutes without the evaporator thermistor reaching 52°F. The harvest cycle is when the machine warms the evaporator to release frozen ice cubes. The fault can be caused by a mispositioned thermistor, a failed hot gas valve, or a sealed system issue such as a refrigerant leak or restriction.

A reset may temporarily clear the fault code, but if the underlying cause is not corrected, the error will return once the next harvest cycle fails to meet the 52°F threshold within 16 minutes. It is important to diagnose and repair the root cause before relying on a reset. Resetting without repair is not a lasting solution.

Repair costs vary depending on the cause. Reseating a thermistor may involve only a service call fee, typically in the range of $75 to $150. Replacing a hot gas valve can cost between $150 and $350 including parts and labor. Sealed system repairs involving refrigerant recovery, leak repair, or restriction removal are more involved and can range from $300 to $600 or more depending on the extent of the work required.

Start by inspecting the evaporator thermistor to confirm it is seated firmly in its mounting position and making good contact with the evaporator surface. If the thermistor is correctly positioned, the next step is to test the hot gas valve for proper electrical and mechanical operation. If neither of those components is the issue, the sealed system should be evaluated by a certified technician for leaks or restrictions.

The ice maker will not be producing ice correctly while this fault is active, as the harvest cycle is not completing properly. Continuing to run the unit without addressing the fault could stress components further, particularly if a sealed system issue is present. It is best to stop using the unit and perform diagnostics before resuming normal operation.