Introduction
Welcome to the user manual for the Hunter Node400 4-Station Irrigation Controller. This battery-powered controller is engineered for isolated sites and areas without traditional AC power, providing a reliable and efficient solution for automatic irrigation. Its robust, waterproof design ensures durability and consistent performance even in challenging valve box environments.
Product Features
- Fixed 4-station capacity for managing multiple irrigation zones.
- Maximum station run time of 6 hours, suitable for various watering needs.
- Manual cycle operation for immediate watering control.
- Easy retrieve memory feature to restore previous programming settings.
- Powered by one or two 9V batteries, offering flexibility and extended power.
- Easy-to-program LCD screen for clear visibility and intuitive setup.
- Master valve control capability for enhanced system management.
- Standard Hunter controller programming with 3 independent programs and 4 start times per program.
- Waterproof exterior designed for secure installation within a valve box.
Setup and Installation
The Hunter Node400 is engineered for quick and straightforward installation, typically mounting directly onto a valve's solenoid. This design minimizes the need for additional tools like screws or drills, simplifying the setup process.
Components Overview
Image: Front view of the Hunter Node400 controller, displaying the LCD screen, control buttons, and the colored wiring harness for connecting to irrigation stations.
Battery Installation
- Locate the battery compartment on the controller unit.
- Insert one or two new 9V alkaline batteries, ensuring correct polarity as indicated inside the compartment. Using two batteries will extend the operational life of the controller.
- Securely close the battery compartment cover to maintain the unit's waterproof seal.
Wiring Connections
- Connect the common wire from your irrigation valves to the common terminal on the Node400, typically labeled 'COM'.
- Connect the individual zone wires from your valves to the corresponding station terminals (1, 2, 3, 4) on the Node400.
- If utilizing a rain sensor, connect its wires to the designated sensor terminals (SEN) on the controller.
Image: Hunter Node400 controller shown with an optional mounting bracket, illustrating how the unit can be secured within a valve box for stable installation.
Operating Instructions
The Node400 features an intuitive LCD screen and a user-friendly push-button interface for all programming and operational adjustments.
Basic Programming Steps
- Press the PRG button to enter the programming mode.
- Use the arrow buttons (< and >) to navigate through various settings, including current time, start times, run times for each station, and specific watering days.
- Adjust values using the + and - buttons.
- The controller supports 3 independent programs (A, B, C) and allows for up to 4 start times per program.
- Set your desired watering days, which can include specific days of the week, odd/even days, or interval watering cycles.
- After setting each parameter, ensure you confirm the selection to save the changes.
Manual Operation
To initiate a watering cycle manually, press the dedicated manual cycle button. This button is typically indicated by a water droplet symbol or a 'Manual' label on the controller's interface. You can usually select a specific station to run or activate all stations for a predetermined duration.
Maintenance
Battery Replacement
The Node400 operates on 9V batteries. For optimal performance and to prevent interruptions, it is recommended to check and replace the batteries annually or immediately when the low battery indicator appears on the LCD screen.
- Open the battery compartment cover.
- Carefully remove the old 9V batteries.
- Insert new 9V alkaline batteries, ensuring correct polarity.
- Close the battery compartment securely to maintain the waterproof integrity of the unit.
Image: Rear view of the Hunter Node400 controller with a black protective cap, highlighting its compact and sealed design which contributes to its durability in outdoor environments.
Troubleshooting
- Controller Not Powering On: Verify that the batteries are correctly installed and are fresh. Replace old batteries if necessary.
- Stations Not Watering: Double-check all programming settings, including start times, run times, and watering days. Inspect wiring connections to the valves for any disconnections or damage. Ensure the master valve, if used in your system, is functioning correctly.
- Erratic Operation: This can often be resolved by replacing the batteries. Also, ensure the controller's seals are intact and there is no moisture ingress into the unit.
- Programming Difficulties: If you encounter challenges with programming, refer to the detailed programming instructions available in the full product manual or on Hunter's official support resources. The 'easy retrieve memory' feature can be used to revert to previous settings if an error occurs during programming.
Specifications
| Feature | Detail |
|---|---|
| Model | NODE-400 |
| Stations | 4 |
| Power Source | 1 or 2 x 9V Batteries |
| Max Station Run Time | 6 hours |
| Programs | 3 (A, B, C) |
| Start Times per Program | 4 |
| Product Dimensions | 3.5 x 3.5 x 2.5 inches |
| Item Weight | 1.63 pounds |
| Manufacturer | Hunter |
Warranty and Support
Warranty Information
The Hunter Node400 Irrigation Controller is covered by a 2-year warranty period from the date of purchase. Please retain your original proof of purchase for any warranty claims.
Customer Support
For further assistance, access to detailed programming guides, or technical support, please visit the official Hunter Industries website or contact their customer service department directly.
