Irritrol RD 600 Instruction Manual: Overview & Key Features
The Irritrol RD 600, alongside RD-900 and RD-1200 models, offers automated irrigation control. A comprehensive 40-page PDF manual details operation, covering indoor and outdoor applications.
This controller’s user guide assists with setup, programming, and troubleshooting. Repair services are available for these Rain Dial timers, alongside downloadable manuals for support.
The Irritrol RD 600 controller represents a robust solution for automating residential and light commercial irrigation systems. Designed for both indoor and outdoor installation, this Rain Dial model—along with its counterparts, the RD-900 and RD-1200—provides users with flexible and efficient water management capabilities.
Understanding the RD 600’s functionality begins with accessing the detailed 40-page user manual, available in PDF format. This manual serves as a central resource, guiding users through every aspect of the controller, from initial setup and wiring to advanced programming features. It’s crucial for both novice and experienced users to familiarize themselves with the manual’s contents.
The controller’s primary function is to regulate watering schedules, optimizing water usage and promoting healthy landscapes. Its intuitive interface allows for the creation of multiple independent programs (A, B, and C), catering to diverse irrigation needs. Furthermore, repair and exchange services are readily available for these units, ensuring longevity and reliable performance.
Controller Specifications: RD-600, RD-900, RD-1200 Models
The Irritrol Rain Dial series, encompassing the RD-600, RD-900, and RD-1200 models, shares a unified operational framework detailed within a single, comprehensive 40-page user manual. While specific zone capacities differ, the core programming logic and features remain consistent across the range.
The RD-600 typically supports up to 6 zones, making it ideal for smaller residential landscapes. The RD-900 expands this capacity to 9 zones, and the RD-1200 offers control over 12 independent watering zones, catering to larger properties. All models operate on standard input voltage and are designed for both indoor and outdoor applications.
Each controller is constructed for durability and ease of use, featuring a user-friendly interface. Detailed specifications, including electrical requirements and operating parameters, are thoroughly documented in the downloadable PDF manual. Repair services are also available, extending the lifespan of these reliable irrigation controllers.
Package Contents & Initial Inspection
Upon receiving your Irritrol RD 600 (or RD-900/RD-1200) controller, carefully inspect the packaging for any signs of damage during shipment. The standard package should include the controller unit itself, a mounting bracket with associated hardware for secure installation, and the comprehensive 40-page instruction manual in PDF format.
Verify that all listed components are present. The manual provides detailed diagrams and instructions for proper assembly and wiring. Before proceeding with installation, visually inspect the controller for any physical defects or damage. Ensure all ports and connections are intact and free from debris.
Retain the original packaging and documentation for potential warranty claims or future reference. Downloadable manuals are also available online, offering convenient access to troubleshooting guides and support resources. A thorough initial inspection ensures a smooth and successful installation process.

Installation Guide
The RD 600 installation involves mounting the unit (indoor/outdoor), carefully wiring valve zones, and securely connecting the power supply, as detailed in the manual.
Mounting the RD 600 Controller (Indoor/Outdoor)

Proper mounting of your Irritrol RD 600 controller is crucial for reliable operation and longevity. The unit is designed for both indoor and outdoor installations, offering flexibility based on your preference and environmental conditions. When selecting a location, ensure it’s protected from direct sunlight, rain, and extreme temperatures, especially for outdoor setups.
For indoor mounting, choose a dry, well-ventilated area, away from water sources. Securely attach the controller to a wall using appropriate screws and anchors, ensuring it can support the unit’s weight. Outdoor mounting requires a more robust approach; consider a weatherproof enclosure to shield the controller from the elements.
Before mounting, verify access to wiring connections and power supply. Maintain sufficient clearance around the unit for easy access during maintenance and programming. Refer to the detailed diagrams within the Irritrol RD 600 instruction manual for specific mounting recommendations and dimensions.
Wiring the Valve Zones
Correctly wiring the valve zones is fundamental to the Irritrol RD 600’s functionality. Begin by disconnecting power to the controller before commencing any wiring work; Identify the valve terminals on the RD 600 circuit board, typically labeled for each zone (A, B, C, etc.).
Connect each valve wire to its corresponding terminal, ensuring a secure connection. Use appropriately sized wire and connectors, following the wiring diagram provided in the Irritrol RD 600 instruction manual. A common wire, often white, is required for all zones to complete the circuit.
Double-check all connections for tightness and accuracy before restoring power. Incorrect wiring can lead to malfunctioning zones or damage to the controller. If you encounter difficulties, consult a qualified irrigation professional or refer to the detailed troubleshooting section within the manual for assistance.
Connecting the Power Supply
Prior to connecting the power supply to your Irritrol RD 600 controller, ensure the power source matches the controller’s voltage requirements – typically 24VAC. Locate the designated power terminals on the controller’s circuit board; these are usually clearly marked.
Connect the transformer wires to these terminals, observing correct polarity if applicable. A ground wire connection is also crucial for safety and should be connected to the designated grounding point. Verify that the transformer is appropriately sized to handle the load of all connected valves.
After making the connections, carefully inspect all wiring for secureness and proper insulation. Restore power cautiously and verify the controller powers on correctly. If the controller fails to power up, re-check all connections and the transformer’s output voltage before seeking further assistance from the manual or a professional.

Programming the RD 600

The RD 600 allows programming of A, B, and C watering schedules, alongside manual operation and seasonal adjustments, as detailed in the 40-page user manual.
Setting the Date and Time
Accurate date and time settings are fundamental for proper operation of the Irritrol RD 600 controller. The user manual emphasizes this initial step, as scheduled watering programs rely heavily on correct temporal data. Typically, accessing the date and time settings involves navigating through the controller’s menu system using the ‘Program’ and ‘Enter’ buttons.
Users should consult the detailed instructions within the 40-page manual for specific button sequences, as these can vary slightly depending on the model (RD-600, RD-900, or RD-1200). The process generally involves highlighting the ‘Date’ or ‘Time’ field, then using the arrow buttons to increment the values until the correct information is displayed.

Confirming each setting with the ‘Enter’ button is crucial. Incorrect date or time settings will lead to inaccurate watering schedules, potentially resulting in over or under-watering of your landscape. Double-checking these settings after initial setup is highly recommended to ensure optimal performance.
Programming Watering Schedules (A, B, C Programs)
The Irritrol RD 600 offers flexibility with three independent watering programs – A, B, and C – allowing users to customize irrigation for diverse landscape needs. The 40-page manual details how to access and configure each program individually. Programming involves setting a start time, watering duration for each zone, and the days of the week the program will run.
Navigating the menu using the ‘Program’ and ‘Enter’ buttons is key. Users select a program (A, B, or C), then define the start time, typically in military time format. Next, the duration for each valve zone is programmed, specifying how long each zone will water. Finally, the days of the week for operation are selected, offering options like specific days or interval settings.
Remember to save each program after configuration. Utilizing all three programs allows for tailored watering schedules based on plant type, sun exposure, or seasonal changes, maximizing water efficiency.
Adjusting Watering Duration and Start Times
The Irritrol RD 600 manual details precise control over watering parameters. Adjusting start times is achieved through the programming menu, allowing users to set multiple start times per program (A, B, C). This is beneficial for split watering, preventing runoff on sloped landscapes. Duration adjustments are equally straightforward, specifying watering time in minutes for each individual zone.

To modify duration, navigate to the zone within the selected program and use the up/down arrows to increase or decrease the watering time; Similarly, start times are adjusted using the same controls, ensuring accurate scheduling. The controller displays times in a 24-hour format, requiring careful attention during setup.
Remember to save changes after each adjustment. Fine-tuning these settings optimizes water usage and promotes healthy plant growth, adapting to varying weather conditions and landscape requirements.
Utilizing the Manual Mode
The Irritrol RD 600 offers a Manual Mode for immediate, on-demand watering, bypassing programmed schedules. This feature is invaluable for testing zones, applying supplemental water during dry spells, or addressing unexpected plant needs. Accessing Manual Mode typically involves navigating through the controller’s programming menu, often indicated by a “Manual” or “Test” option.
Once activated, you can select individual zones to water. The controller will run that zone for a predetermined duration, or until manually stopped. This override function doesn’t alter your established programs; it simply provides temporary control. Remember to exit Manual Mode after use to resume scheduled watering.
Consult the RD 600 manual for specific button sequences, as variations may exist. Utilizing this mode efficiently ensures targeted watering and prevents unnecessary water waste, offering flexibility beyond automated programming.

Advanced Features & Troubleshooting
The Irritrol RD 600 supports rain sensors, seasonal adjustments, and offers troubleshooting for issues like power failures or inactive zones, detailed in its manual.
Rain Sensor Compatibility & Setup
The Irritrol RD 600 controller is designed to work seamlessly with various rain sensor models, enhancing water conservation efforts. Connecting a rain sensor interrupts the watering schedule when sufficient rainfall occurs, preventing overwatering and saving resources.
To set up a rain sensor, first, ensure the controller is powered off. Locate the designated sensor terminals on the RD 600’s control board – typically labeled “Sensor” or “SEN.” Connect the rain sensor wires to these terminals, observing correct polarity if specified by the sensor manufacturer.
Once wired, access the programming mode on the RD 600. Navigate to the sensor settings within the menu. Enable the rain sensor function and configure the desired interruption parameters, such as the amount of rainfall needed to trigger the shut-off. Refer to the comprehensive manual for specific programming steps and sensor compatibility details.
Seasonal Adjustment Functionality
The Irritrol RD 600 controller incorporates a valuable seasonal adjustment feature, allowing users to fine-tune watering schedules based on changing weather patterns throughout the year. This functionality optimizes water usage, preventing under or overwatering as temperatures and rainfall amounts fluctuate.
Access the seasonal adjustment setting through the controller’s programming menu. Typically expressed as a percentage, this adjustment uniformly increases or decreases the watering duration for all programmed zones. For example, a +10% adjustment increases watering times by ten percent across all schedules.
During hotter, drier months, a positive adjustment can compensate for increased evaporation and plant water demand. Conversely, during cooler, wetter periods, a negative adjustment reduces watering to avoid saturation. Regularly adjusting this setting, guided by local weather conditions, ensures efficient and responsible irrigation practices. Consult the manual for detailed instructions.
Troubleshooting Common Issues (No Power, Zones Not Activating)
If the Irritrol RD 600 controller experiences a complete power loss, first verify the power supply connection. Ensure the transformer is securely plugged into a working outlet and that the voltage matches the controller’s requirements. Check the fuse within the controller; a blown fuse indicates a potential electrical issue requiring professional attention.
When zones fail to activate, inspect the valve wiring. Confirm all connections are secure and free from corrosion. Test each valve individually to determine if the issue is isolated to a single zone or affects multiple areas. A faulty valve solenoid could be the culprit, necessitating replacement.

Review the programmed schedule to ensure the zone is activated during the current time. Refer to the manual for error code interpretations, as these can pinpoint specific problems. If issues persist, consider professional repair services specializing in Irritrol controllers.
Error Codes and Their Meanings
The Irritrol RD 600 controller utilizes error codes to diagnose operational issues. While specific codes aren’t extensively detailed in readily available summaries, understanding their general purpose is crucial. Error messages often relate to wiring faults, valve malfunctions, or sensor communication problems.
A common issue indicated by an error code involves a short circuit in the valve wiring. This requires careful inspection of all zone connections, looking for damaged wires or improper grounding. Another frequent error relates to the rain sensor; ensure it’s correctly connected and functioning.
Consult the full 40-page manual for a comprehensive list of error codes and their corresponding solutions. If a code remains unclear, professional assistance from an irrigation specialist is recommended. Ignoring error codes can lead to further damage or inefficient watering practices.

Maintenance & Support
Regular cleaning and care extend the Irritrol RD 600’s lifespan. Downloadable manuals and repair services are available online for continued support and troubleshooting.
Cleaning and Care Instructions
Maintaining your Irritrol RD 600 controller ensures reliable operation and longevity. Periodically inspect the unit for dust and debris accumulation, especially if installed outdoors. Use a soft, dry cloth to gently wipe down the exterior casing; avoid abrasive cleaners or solvents, as these can damage the plastic components.
For outdoor installations, check the enclosure for any signs of water ingress. Ensure the gasket is properly seated to prevent moisture from entering the controller. If water is detected, immediately disconnect the power supply and allow the unit to dry completely before restoring power.
Avoid direct exposure to harsh weather conditions whenever possible. Regularly inspect the wiring connections for corrosion or damage, and replace any compromised wires. Proper maintenance will help prevent malfunctions and extend the life of your irrigation system controller.
Finding Additional Resources & Support (Manual Downloads)
For comprehensive support regarding your Irritrol RD 600, RD-900, or RD-1200 controller, numerous online resources are readily available. A detailed 40-page PDF manual covers all three models, offering in-depth instructions for installation, programming, and troubleshooting. These manuals can be easily downloaded from various websites specializing in irrigation equipment and documentation.
Furthermore, dedicated repair services exist for Irritrol Rain Dial controllers, providing assistance with fixing and restoring malfunctioning units. Online forums and communities dedicated to irrigation systems can also offer valuable insights and peer-to-peer support.
Directly searching for “Irritrol RD600-INT-R instruction manual” will yield relevant results; Remember to always refer to the official documentation for accurate and up-to-date information regarding your specific model.


























































































