On the other note, it was suggested that to use high current outputs of a board for waterpump/airpump to better handle the current requirements of the motors. I tried to use heater output(out0) of the duet 3 expansion board for the air blower, it did not work. Any feedback on this, please?
It is now working when the terminal connections are reversed. While connecting the airpump to the board I followed the Wiring diagram of Duet3 Expan 3HC, https://duet3d.dozuki.com/Wiki/Duet_3_Expansion_3HC_Wiring_Diagram, the heater terminals on the board are opposite to the representation of the wiring diagram. I have the Duet 3 Expan 3HC V1.0 board.