They also document the error codes:
https://www.samsung.com/us/support/troubleshoot/TSG10000997/...
But as mentioned most big appliances usually have a small service manual tucked inside the chassis somewhere. Those will have these instructions and the table to decipher the error codes, along with some basic troubleshooting steps. It might also include official part numbers to replace components which might have failed. This is often true for washing machines, dryers, fridges, dishwashers, stuff like that.
On my GE units it even stores recent codes in case it experienced multiple different issues while running. You can cycle through the history in the maintenance mode.
I do agree though, in the end you still probably need the table to decipher the error codes.
Computerized gadgets should help us diagnose and fix issues, not hinder! Good luck on your future wrenching on your own stuff :)