Make sure you have connected the troublesome zone to the proper connection on the Sprite.  I suspect you may have connected it to the "M" port that is right beside the connection for zone 6.  The M port controls a master valve or pump and is always on.

If that's not the problem, try removing the wire for the zone that is always on and then see if it continues to operate with it disconnected.  If it does, then you either have a short somewhere in your wiring or you have the wrong wire for that zone.

Dear customer,

If you remove the wire for this zone from the controller, then start watering other stations for example station 2, does this zone still start to water? 

Thanks,

Wency

Netro Support

Dear customer,

Please note shared users must have a Netro account. Please let the user register a Netro account first. Please see this article about how to use the , shared user. http://www.netrohome.com/forum/posts/147

Regards,

Wency

Netro Support