KitchenAid Ice Maker Error Code LED flashing 1 second intervals

This LED flash pattern indicates a bin thermistor failure mode, meaning the control board cannot detect a signal from the bin thermistor. The thermistor is either physically disconnected from its wiring harness or has developed an open circuit internally. The ice maker will not operate normally until the thermistor connection is restored or the component is replaced.

With the bin thermistor disconnected or failed, the control board cannot monitor bin temperature accurately, which may cause the ice maker to stop producing ice or behave unpredictably. Continuing to run the unit in this state is not recommended, as the safety and production controls that rely on bin temperature data will not function correctly. Address the fault before resuming normal use.

A reset will not permanently clear this error if the underlying problem with the bin thermistor has not been fixed. The control board will detect the disconnected or open thermistor again on startup and re-trigger the 1-second LED flash pattern. The fault must be corrected at the component level before the error will stop appearing.

If the cause is a loose or unplugged connector, you can resolve this yourself by locating the bin thermistor wiring harness and pressing the connector firmly back into its socket. If the thermistor itself has failed, replacing it is a moderately straightforward repair that involves disconnecting the harness and installing a new thermistor. However, if you are not comfortable using a multimeter to test resistance or tracing wiring, a professional technician is recommended.

If only a reconnection is needed, there is no parts cost involved. If the bin thermistor must be replaced, the part itself typically costs in the range of $15 to $60 depending on the specific model. Adding professional labor, the total repair cost generally falls between $75 and $200, though this varies by region and service provider.