Samsung RJ050F2HXEB

[The Viking]

Hi Richard,
When you replace the EEPROM the new one needs to be told what it is fitted to, at the moment the unit's controls doesn't know if it is a hoover, a tv, a fridge or an AC unit. (But the good news is that modern EEPROMs hardly ever fails and if your indoor unit is new enough they are removable so just take the one from the old PCB and fit it to the new PCB and your system will work.)
The way we tell the controls what they are fitted to is by giving it a "product option code".
I have uploaded the service manual to: https://drive.google.com/open?id=1Z1...jub7egRq0F_OFR
How to enter the code in to the machine starts on page 4-2 and what code to enter is on pg. 4-15. You will need an IR remote to enter the code but any Samsung IR remote will do and if yours is newer/different than the one in the manual just let me know and I will send you the instructions for the controller you got.

Clarification: Any Samsung AC IR remote can be used (Just realised that we do other products with IR remotes as well)