When you need precise control—for odd/even day watering or specific weekdays—use the custom schedule:
Use the arrows to select . Press Advance until the duration flashes.
: Automatically tests individual zones sequentially in brief increments to simplify spray head adjustments. Step 1: Mounting and Wiring the Controller
Use to select the time of day you want the cycle to start (e.g., 5:00 AM). Note: The will run all stations consecutively, starting at this time. Step 5: Run Mode Turn the dial to Auto Run to let the program take over. 3. Advanced Features rain bird sprinkler timer isa 304 manual
: Automatically runs each station for two minutes to check for head adjustments or leaks.
If you are reconnecting loose wires, use the terminal strip at the bottom of the unit:
The ISA-304 is a compact, user-friendly 4-station irrigation controller from Rain Bird’s ISA series. It’s designed for residential or light commercial systems, offering simple programming and reliable timed watering. When you need precise control—for odd/even day watering
Compatible with a 9V battery to retain time and program settings during power outages.
The internal clock will continue to keep time, but the electrical signals to the sprinkler valves will be cut. Return the switch to to resume your normal schedule. Wiring Terminal Configurations
Clean any dust out of the cabinet using compressed air. Manually advance the dial to see if it catches. If it continues to skip zones consistently, the mechanical contacts inside are worn down. If you need to adjust your system further, let me know: Is your timer indoor or outdoor ? Are you connecting a rain sensor or pump ? What specific problem are you trying to fix? Step 1: Mounting and Wiring the Controller Use
The official covers all models, including the ISA‑304. You can access it through several sources:
The Rain Bird ISA 304 is a reliable, no-frills indoor sprinkler timer, perfect for homeowners seeking an affordable way to automate watering for up to four zones. Known for its user-friendly design, it allows both manual and automatic operation, helping you conserve water while keeping your landscape healthy.
Dust and cobwebs can jam the mechanical gears. Periodically blow compressed air into the dial housing to keep the wheels turning smoothly.