Samsung power cool - Samsung RB2155SH Bottom Freezer Refrigerator

If your Samsung fridge is showing a plug-in sign on the display, it usually indicates that the refrigerator is not detecting a power source. However, if the cooling is normal, it is likely a display error.
To clear the display error and restore normal settings on your Samsung fridge, you can try the following steps:

1. Unplug the fridge from the power source and wait for at least 30 seconds.
2. Plug the fridge back into the power source and check if the error message has disappeared.
3. If the error message is still there, try resetting the fridge by pressing and holding the power freeze and power cool buttons simultaneously for about 10 seconds. This should reset the display and restore normal settings.

If the error message persists despite trying the above steps, it might be an indication of a more serious problem with the fridge. In such cases, it's best to contact Samsung customer support or a certified technician to diagnose and fix the issue.

Check and see if you have power going to the fan, before replacing the fan. It could be a power board problem.

Samsung goes into demo mode every time the power goes out and comes back on.

so I guess I'm screwed if I am out of town and come home to a warm refrigerator full of rotted food.

The lesson is to never never never buy a Samsung refrigerator.

Samsung Blinking Dash/Line Error Code List - Parts Dr

https://partsdr.com/blog/samsung-blinking-dashline-error-code-list/

Jul 16, 2011 - Indicate Error when the temperature sensed by Refrigerator sensor is .... My model required holding the super freeze and super cool buttons, but it worked! ... My display said S and E after a power outage I pressed energy .... I had that 5 E error code after a brief power outage... thank you for the resetting ...

Samsung Refrigerator Troubleshooting Self Diagnostics ...

www.appliancerepairlesson.com/.../samsung-refrigerator-troubleshooting...

Apr 13, 2011 - and then I also noticed that the display buttons for the temperature is not working. ..... We have tried to reset the refrigerator with no luck. ..... I had a power outage yesterday and my Samsung Fridge RSG257 now shows an 88 .... I haveModel# RF268ABRS, this thing quit cooling/freezing after we lost power.

Error Codes / Messages / Blinking

Set it to default , see if that sorts the issue out first

press the power freeze and the power cool buttons at the same time ND HOLD THEM FOR 5 SECONDS

That sounds like a power glitch. Try pressing and holding the power freeze and power cool buttons at the same time for about 8 to 13 seconds and see if it clears.

If that doesn't do it, let me know and I'll dig up the Fast Track on it.

take it back

That just worked for me too. Hold the power freeze and power cool buttons down at the same time and it will reset it after a power surge. All I had working was a light inside the door and a blinking green light on the display panel.