Samsung MH052FUEA Service Manual page 79

Switch Setting and Testing Operation (cont.)
ROTARY SWITCH "SW02 " POSITION ACCORDING TO REFRIGERANT CIRCUIT
CONNECTED (0=A;1=B;2=C;3=D;4=E )
0
INSTALLATION TEST MODE (with all indoor units functioning)
Please do cool mode try-run or heat mode try run.
Cool mode try-run :Push the [K2 ] button three times.
Heat mode try-run :Push the [K2 ] button once.
Samsung Electronics 4-23