Maybe someone can help: I need a wiring plan (not in the manual) for the Samsung indoor unit SH 18ZSO. The clamps on the units connection-panel are named L1 / N1 / C / 1 / 2 / 3 / 4 / Does anybody know which wires have to be connected to the clamps 1-4? Which clamps do I have to use if I would operate the indoor unit without the heating function? Thank you all!