Rain Bird Sprinkler Timer Isa - 304 Manual ((link))

| Problem | Possible Cause | Solution | | :--- | :--- | :--- | | | No power / Transformer unplugged. | Check the wall outlet. Ensure the transformer is plugged in and receiving power. Check GFI outlet in the bathroom/garage if the outlet is dead. | | Sprinklers won't turn on | "OFF" mode is active. | Press the OFF button to toggle the system back to "AUTO" mode. | | Watering at wrong time | AM/PM mix-up. | Re-check the CLOCK setting. Ensure the dot on the display correctly indicates AM or PM. | | All stations come on at once | Wire short or common wire issue. | Check the wiring in the cabinet. Ensure the "Common" wire is securely connected and not touching other wires. | | Station stuck on | Bad valve solenoid. | Swap the wires of the stuck station with a working station at the timer. If the problem moves to the new station, the timer is faulty. If it stays at the original zone, the valve is faulty. |

To set specific days (for Schedule C), turn the dial to and use the arrows to toggle days ON or OFF . 3. Set Watering Start Times Turn the dial to "Custom Schedule – Starts" . rain bird sprinkler timer isa 304 manual

The Rain Bird ISA 304 is a 4-station indoor automatic sprinkler controller. It is an "easy-set" logic timer designed for residential use. | Problem | Possible Cause | Solution |

: Quickly initiate a watering cycle for a specific station without affecting scheduled programs. Check GFI outlet in the bathroom/garage if the

Since Rain Bird no longer hosts the ISA 304 manual on its main support site (legacy products are archived), try these sources: