Electrolux Ice Maker Error Code SLOW_FLASH

A slow LED flash on an Electrolux ice maker is the control board's way of reporting a thermistor circuit problem. The board has detected either that the thermistor plug is disconnected or that the thermistor has failed to an open circuit condition. The unit will not complete normal ice-making cycles until the sensor issue is corrected.

The ice maker will generally not produce ice properly while this fault is active because the control board relies on thermistor data to manage its operating cycles. Continuing to run the unit in this state is unlikely to cause immediate safety hazards, but ice quality and output will be unreliable. It is best to resolve the thermistor fault before relying on the unit for ice production.

If the fix is simply reseating a loose thermistor plug, the cost is essentially nothing beyond your time. If the thermistor itself has failed, a replacement thermistor typically costs in the range of $15 to $50 for the part, plus labor if you use a technician. A control board replacement, needed in rare cases, can run considerably higher, often in the $100 to $300 range for the part alone.

Start by checking that the thermistor plug is fully and securely connected to the control board. If the plug is seated correctly, use a multimeter set to resistance mode to test the thermistor itself. A reading of infinite resistance or OL means the thermistor has failed open and needs to be replaced. If both the connector and thermistor check out, inspect the wiring harness for damage and consider the control board as a last resort.

A reset may temporarily clear the slow flash pattern, but the code will return if the underlying thermistor problem has not been fixed. The control board will re-detect the open or missing sensor signal as soon as it runs through its diagnostic checks. A permanent resolution requires reseating the thermistor plug or replacing a faulty thermistor or damaged wiring.