help with samsung AQV12UGAX needed!

hi all.i had post last year also a thread here and i had the code for the ac but it didnt help.my ac when i turn it on works for 5 min just the inddoor unit and then it stops and timer and smart saver leds are flashing after it stops.
at the outdoor unit ive noticed after i start the ac there is a 220v dc on the mains board after few seconds but on the pcb board there no led on.also after the ac stops by itself on the outdoor pcb there is no led on.no error code?i send the outdoor pcb for service and the tech there replace some parts and said that it should be ok.after he tested it.
is there a chance that i ve to reset both indoor and outdoor unit cause it looks like that there is no contact between them?or if u can diagnose any other problem i ll be thankfull!
the code i ve for that model is:547677D23d

anyone knows how can I check that indoor and outdoor unit communicate???

anyone with Samsung?