hello fernando,
I'm a bit 'confused about the use of the bomba1, bomba2, bomba3.
unfortunately I can not understand the translation well.
I need to connect the return pump. I think I understand that the bomba1 is for to restore the evaporated water (controlled by sensor2 and sensor3).
I have connected the pump pins to the relay but bomba2 and bomba3 remains switched off. could it be that they do not come on because I have not yet installed all the level sensors?
thank you