The word USED displayed on the Pro-C Controller represents a landscape lighting station that was assigned. Once a start time is assigned to program L1, it turns station 1 from an irrigation station to a lighting station (same for L2 and L3). As a result, when creating programs for irrigation A, B, or C, station 1 will show USED since L1 has been assigned a start time. All irrigation stations will be wired using the next available station(s). Learn more
If this was done in error, use the instructions below to remove it from programming.