39 C — Ice Maker Communication / Sensor Error
Companion to 39 E — typically indicates the main board has lost communication with the ice maker or its temperature sensor reads out of range.
- Keep using it?
- Yes, with caution
- DIY difficulty
- Moderate
- Verified against
- samsung.com ↗
How to fix it
- Unplug fridge for 5 minutes.
- Pull the ice bin and inspect the ice maker connector at the rear of the freezer cavity.
- Reseat the harness; inspect pins for corrosion.
- If error persists, replace the ice maker assembly (thermistor is integral on most models).
- If a new ice maker doesn't clear it, suspect the main PCB.
Why it happens
Typical signs: Ice maker inactive · Display shows 39 C intermittently · Ice maker stuck mid-cycle
- Ice maker thermistor failure Sensor open or shorted — control can't tell when to harvest.
- Loose ice maker harness Connector partially unseated, especially after a freezer drawer service.
- Failed ice maker control Internal electronics in the ice maker assembly.
Replace your water filter
A clogged or overdue water filter is a common cause of low water and ice flow on Samsung refrigerators — they are meant to be changed about every 6 months. The OEM-style filter that fits most Samsung refrigerators is the DA29-00020B ($45-55 OEM, $15-25 compatible).
- Samsung DA29-00020B refrigerator water filter OEM water filterAmazon →
Not sure which filter fits your model? See the full compatibility guide →
Parts you may need
If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.
- Ice maker assembly Common replacementAmazon →
Related repair guides
More Samsung refrigerator codes
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: samsung.com.