HOME SETUP TIMER
How long before checking a Samsung refrigerator with Power Cool?
Quick answer
Use 2 hours as the starting point.
After enabling Power Cool following a power cycle
Start a reminder timer
2 hours
Timer has not started.
When it rings: Look for a falling temperature.
What the source actually says
Samsung says Power Cool can reduce its three-hour diagnostic check to two hours.
Follow the instructions for your exact model.
Source
Read the manufacturer guidance. Model instructions override this general page.