I have a 2.5 acre site half of which is controlled by an Orbit timer and now the other half (the field) is controlled with the new S-12 .

The water is pumped out of a seasonal pond and the pump is turned on whenever the zone(s) are turned on through a standard switch from the timers to the pump.

The problem is that I get a pump fault on the Orbit timer if the pump wire is left hooked up to the Netro timer. They are wired such that both 

timer"s pump connection is to a common wire to the switch. This was not a problem when I had two Orbit timers. What can be done? - run a separate wire to the switch? Do something in the software? Need to know soonest.

Thanks,

Vance