sprinkler zone stays on while other zones are on
I have a Hunter pro C console with 7 zones. Recently zone 7 is on when i turn on the other zones. Let's say i turn on zone 1, zone 7 turns on also, but if i turn zone 1 off zone 7 continues to be on. Only way for me to turn zone 7 off is to turn off the main water valve. I changed the solenoid and the diaphragm from hunter pgv valve (zone 7), but still continues to do the same thing. Any suggestions on what i should try before i call someone for repair?