Samsung · Refrigerator Moderate
85 C — Samsung Refrigerator 85C — Low Voltage / Power Supply Error
On Samsung refrigerators, 85C indicates a low-voltage / low-compressor-voltage condition (a brownout, inverter-PCB, or power-supply problem). The board reports it, but the underlying fault is power/voltage-related — check the supply voltage and the inverter PCB rather than assuming a general board failure.
- Keep using it?
- Yes, with caution
- DIY difficulty
- Easy
- Verified against
- samsung.com ↗
How to fix it
- Press and hold OK on the Family Hub display for ~3 seconds to clear the alert.
- Unplug the refrigerator directly into a known-good wall outlet (not a power strip or surge protector).
- Verify the outlet measures 110-125 VAC with a multimeter.
- Move any high-draw appliances to a different circuit.
- If the error returns repeatedly with good voltage, suspect the main PCB.
Why it happens
Typical signs: Display shows 85 C after a storm or outage · Touchscreen unresponsive · Cooling may continue or pause
- Recent power surge or brownout Utility event tripped the under-voltage protection.
- Shared circuit with high-draw appliance Fridge sharing an outlet with a microwave, space heater, or vacuum.
- Failed surge protector / loose outlet Marginal connection dropping voltage at the cord.
- Main PCB drift Rare — sensing circuit on the board has failed.
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.