These are the connections for circuit board** of a COVATUTTO 20
LETTERS and MEANING
M : motor + fan (black colour) : connect the two cables in position 3 and 6
R : resistance wire (brown colour): connect the two cables in position 3 and 5
N : Neutral wire (light blue colour) : connect the cable in position
L : live wire (brown colour): connect the cable of phase position 1