Samsung refrigerator repair
A Samsung fridge reading OF OF or O FF is not broken. It is in Cooling Off mode, the setting stores use for display units. Hold the top two left-side buttons for 5 to 8 seconds and cooling comes back.

Samsung fridge codes: fault or owner fix?
| Code | What Samsung says it means | Who handles it |
|---|---|---|
| 21E | The freezer fan sends no rotation signal, often because it iced over from a door left open or a gasket gap | Owner can clear the ice; a repeat means a technician |
| 22E or 22C | Fault on the fresh food side fan | Samsung's first step: unplug and leave the doors open for a few hours |
| 8E, 14E, 33E | Ice maker sensor errors; 33E is the ice pipe heater | Technician |
| 39E or 39C, 40E or 40C | Ice maker function; ice room fan | Run the test button first, then a technician |
| 83E, 84C | Abnormal compressor current; compressor lock | Technician |
Samsung fridge figures
Sources: Samsung RF28MFEDES8 spec sheet; Samsung ice maker troubleshooting page
Running the Samsung ice maker test button
Freezer temp
The freezer must reach 0°F before any Samsung ice maker works. That holds even when the ice maker sits in the fresh food side.
Time the water
Fill 6 ounces (3/4 cup) from the dispenser. Under 10 seconds means the line meets Samsung's 20 psi minimum.
Hold test
Press the test button until it chimes, up to 10 seconds. It runs about 6 minutes on fridge-side units, about 30 seconds on freezer units.
Watch fill
A good test ends with the valve filling the tray. No water at that point moves the search to the supply and the valve.
Two water lines on the RS27T and RS22T
Some Samsung side-by-sides take water through two separate connections, and Samsung names the RS27T and RS22T. Swap them during an install or a move and neither ice nor water dispenses properly. It looks like a failed valve. It is not. While the back is open, check the filter date too: Samsung sets a six-month interval, and on standard models the indicator resets when Filter Reset is held for three seconds.