IIC-800 and wired rain sensor

I got a new rain bird sensor for this IIC-800, installed as specified in the instructions but will not work (removed jumper from S1 to 24-, kept S2 to 24-… One wire from the sensor to S1 the other to 24-)… checked wiring over and over still won’t recognize the sensor! Is there a software glitch some where?? All the stations say obey sensor!!!Any help would be appreciated!!Thx