How to Enter Diagnostic Mode on a Samsung Refrigerator
Samsung refrigerators have a self-diagnosis display test and forced-operation modes entered from the front panel buttons.
Step-by-Step: Samsung Refrigerator Diagnostics
- 1
Enter self-diagnosis: press and hold the top-left and top-right buttons on the display panel together for 8–12 seconds (commonly Power Freeze + Power Cool, or Freezer + Fridge depending on model) until the display blinks — any active fault codes then show on the display.
- 2
Forced Freeze / Forced Defrost: with self-diagnosis active, repeated presses of the same combination cycle through 'Fd' (forced defrost) and 'rd' (radiant defrost) modes — used to clear evaporator icing behind fan-noise and fan-code complaints.
- 3
Check the fault from the display segments: each segment of the display corresponds to a specific sensor on Samsung's segment-map (the tech sheet behind the lower front grille has the map).
- 4
Family Hub and SmartThings models report faults directly in the app.
Found a Code? Look It Up
Once diagnostics shows you a stored code, find its meaning and fix guide in the full Samsung refrigerator code list. These are the highest-priority codes on this platform: