GE Ice Maker Error Code LED flashing 1 second

This fault code indicates that the control board cannot detect a valid signal from the bin thermistor, which monitors temperature in the ice storage bin. The thermistor is either physically disconnected from its wiring harness or has failed internally with an open circuit. The ice maker will not operate normally until the fault is resolved. A technician will need to test the thermistor resistance and inspect the wiring harness to identify the exact cause.

It is not recommended to rely on the ice maker while this fault is active. Without a functioning bin thermistor, the unit cannot accurately monitor conditions inside the ice bin, which can affect ice production cycles and potentially lead to overfill or other operational problems. Resolve the fault before returning the unit to regular use.

A reset may temporarily clear the fault code display, but the error will return if the underlying problem with the bin thermistor or its wiring has not been corrected. The control board checks the thermistor circuit continuously, so a disconnected or failed sensor will trigger the fault again shortly after a reset. Permanent resolution requires repairing or replacing the faulty component.

Start by checking whether the bin thermistor connector is fully seated and that no wires in the harness are visibly damaged or broken. Next, use a multimeter to test the resistance of the thermistor itself. If the thermistor reads as open or out of range for the ambient temperature, replace the sensor. If the thermistor tests fine, inspect the full wiring harness between the sensor and the control board for damage.

If only the thermistor needs replacement, parts typically cost between $15 and $50 depending on the specific model, with labor adding $75 to $150 if a technician performs the repair. If the wiring harness or control board is also involved, total repair costs could range from $150 to $350 or more. Getting a diagnostic call before committing to repairs is a good way to avoid unexpected costs.