For the controllers HC, PROHC, HPC, you can only run a single zone at a time based on the power output available.
Running multiple zones at once is usually not possible due water-pressure and flow limitations at residential properties.
As with any standard irrigation controller, you can wire multiple solenoids/valves to the same zone output if you want. We support up to two solenoids per zone output, plus a master valve, for a total of three solenoids at any given time.
The HCC Hydrawise controller, can run any two programs A, B, C and/or D concurrently. For example,
using more than one program would enable you to water the lawn Stations 1, 2, and 3 on program A and station 4 to soak the flowers with drip irrigation on program B. If these two programs run into each other based on the schedule, they will run concurrently. The additional programs are provided for your convenience should the need arise.