I'm trying to connect a Solid state relay using Arduino Nano. I have a push button on the circuit when press, turn on a water pump (1.5hp).
I was able to make the circuit and code for the push button to supply DC for the SSR input and on uploading, the SSR internal LED turns on when supply voltage is given from arduino.
But the strange thing is when I connect the main line to AC in of the SSR I checked the continuity from both terminals, it says no continuity at all. But for some reason I tested the other terminal using a Tester as in the below picture it turns on which means there is current flowing from 1 to 2 without DC input. But why no continuity even then? Also when input DC given nothing happens on AC out terminal..
What I did wrong or Relay is damaged??