Hunter Pro-C Irrigation Controller
User Manual and Installation Instructions
Introduction
The Hunter Pro-C is an advanced irrigation controller designed for efficient and reliable lawn and garden watering. This manual provides detailed instructions for installation, programming, operation, and maintenance.
Product Overview
A - LCD Display
- Program: Indicates if Program A, B, or C is currently active.
- Station Number: Shows the currently selected station.
- Main Display: Displays all programmed information.
- Year: Shows the current calendar year.
- Month: Shows the current calendar month.
- Day: Shows the current calendar day.
- Flashing Sprinkler Icon: Indicates that watering is active.
- Days of the Week: Displays the days of the week programmed for watering, or indicates if Odd/Even or Interval watering is selected.
- Odd/Even: Shows if Odd or Even watering has been selected.
- Interval: Shows if the interval watering option is selected.
- Percentage Bar: Displays the Seasonal Adjustment percentage in 10% increments.
- Start Time: Appears only when the dial is set to "Set Watering Start Times", showing the programmed start time.
B - Function Buttons and Switches
- + Button: Increases the value of the flashing function in the display.
- - Button: Decreases the value of the flashing function in the display.
- ← Button: Selects the previous item in the flashing display.
- → Button: Selects the next item in the flashing display. It also starts manual watering.
- PRG Button: Used to select Program A, B, or C for different watering zones.
- RAIN SENSOR Button: Allows bypassing an installed rain sensor.
C - Rotary Dial Functions
- RUN: Normal position for automatic watering.
- SET CURRENT TIME/DAY: Used to set the current day and time.
- SET WATERING START TIMES: Allows setting 1 to 4 start times for each program.
- SET STATION RUN TIMES: Used to set the watering duration for each station.
- SET DAYS TO WATER: Selects individual days for watering or sets an interval between watering cycles.
- SET PUMP OPERATION: Turns the pump start or master valve ON/OFF for specific stations.
- SEASONAL ADJUSTMENT: Globally adjusts run times (from 5% to 300%) without reprogramming the controller.
- MANUAL-SINGLE STATION: Manually waters a single station once.
- SYSTEM OFF: Interrupts all programs and stops watering. The watering period remains interrupted until the dial is returned to RUN.
Installation
D - Mounting Compartment
The controller features a battery compartment (9V) for programming without power. A reset button is available for system resets. The connection area is for the transformer, sensor wires, and other systems. The "outdoor" model includes an integrated transformer, while the standard version comes with a separate one. A dedicated space is also present in the "outdoor" model, and surge protection is included.
Mounting the Pro-C Computer to the Wall
Choose a location near a power outlet, protected from moisture and direct sunlight. Mount the controller at eye level. Use the top rear hole as a reference to mount a 25mm screw in the wall, using wall plugs if necessary. Hang the controller on the screw and secure it with additional screws in the other holes. Ensure the adapter is only plugged in after the controller is mounted and all solenoid valves are connected.
Connecting Solenoid Valves and Adapter
Route solenoid valve wires to the controller. Standard cable diameter of at least 1mm is recommended. Connect the common wire from each valve to the common terminal (usually white wire). Connect a separate wire to the other coil terminal for each valve, noting its color. Use waterproof connectors for connections. Open the controller "door" to access terminals. Route wires through the opening at the bottom right. Strip 13mm of wire insulation. Connect the white common wire to the "C" terminal. Connect the color-coded station wires to the corresponding station numbers (1-12). Connect the transformer wires (typically black) to the AC1 and AC2 terminals, and the green ground wire to the GND terminal.
Connecting Station Modules
The Pro-C comes standard with a 3-station base module. It can be expanded with 3-station (PCM-300) or 9-station (PCM-900) modules, up to a maximum of 15 stations. Modules are sold separately. For 15-station expansion, a PCM-300 must be in the first expansion slot (stations 4-6) and a PCM-900 in the upper two slots. The Pro-C features automatic module recognition. The "Power Lock" function secures modules and provides power.
Connecting a Master Valve
To connect a master valve, connect its common wire to one coil terminal and a separate wire to the "P/MV" terminal on the controller. A master valve is a normally closed solenoid valve installed on the main water supply line.
Using a Pump Start Relay
If using a pump start relay, connect its common wire to the "C" terminal and the other wire to the "P/MV" terminal. Ensure the controller is at least 4.5 meters away from the pump start relay and pump to avoid damage from electrical spikes. Never connect the Pro-C directly to a pump.
Connecting a Weather Sensor
A Hunter Mini-Click rain sensor or other weather sensor can be connected to the SEN terminals to interrupt watering when weather conditions require. The sensor can be bypassed using the RAIN SENSOR BYPASS switch. If the sensor switch is in the "ACTIVE" position and no sensor is connected, "Sen Off" will appear. To resolve this, place the switch in "BYPASS" or connect a short wire between the SEN terminals. If a sensor interrupts a cycle before its scheduled end, the remaining watering duration will not be completed.
Testing a Weather Sensor
The Pro-C can test a connected weather sensor. Manual watering cycles (all stations or single station) can be used. Pressing the test button on the Mini-Click sensor during manual watering will interrupt it. The SRR remote or MANUAL-SINGLE STATION function can bypass the sensor, allowing system use even if the sensor has shut it down.
Connecting a Remote Control (Smart Port)
The Pro-C has a "Smart Port" for connecting SRR or ICR remote controls (not for EG countries) for wireless operation. Install a 1/2" threaded T-fitting about 30 cm below the Pro-C. Route the red, white, and blue wires through the T-fitting into the controller's wire compartment. Connect the wires to the AC2 (red), AC1 (white), and REM (blue) terminals. Note that extending Smart Port cables may cause interference; use shielded cables if necessary.
Installing the SRP Programming Unit (Sold Separately)
The Hunter SRP system allows programming watering schedules on a PC and transferring them to the Pro-C via the Smart Port. Refer to the SRP manual for details.
Connecting the Solar Sync
The Pro-C is compatible with Solar Sync and Wireless Solar Sync systems. Solar Sync automatically adjusts the Pro-C's watering schedule based on local weather conditions (evapotranspiration). It uses sun and temperature sensors and Hunter's Rain Clik and Freeze Clik technology to adjust watering based on rain and frost. A small module connects the sensor to the Pro-C, automatically adjusting run times for water conservation and healthier plants.
Power Outages
The PRO-C computer has non-volatile memory, retaining all programmed settings even during power outages. There is no default program used when power is lost.
Programming
Sprinkler System Basics
A modern sprinkler system has three main components: the controller, solenoid valves, and sprinklers. The controller instructs the solenoid valves when to deliver water to the sprinklers and for how long. Solenoid valves control groups of sprinklers, known as watering stations, which are set up to provide water to vegetation. Each solenoid valve is connected to the controller via a cable corresponding to its station number. The controller activates valves sequentially, one station at a time. Once a station's watering time is complete, the next station in the program starts. This process is called a watering cycle. Programs define the watering times, durations, and frequency for individual stations.
Programming Basics
To ensure automatic operation, three elements must be programmed: 1. When to water (Watering Start Times), 2. How long to water (Station Run Times), and 3. Which days to water (Days to Water). The Pro-C offers three independent programs (A, B, and C) to cater to different watering needs.
Creating a Watering Schedule
It is recommended to prepare your specific watering schedule on paper before programming the controller. Factors influencing watering include soil type, landscape, weather conditions, and sprinkler types. Watering is generally best done 1-2 hours before sunrise to maximize water absorption and minimize evaporation. Avoid watering in the midday or evening, which can cause plant damage or mildew. Signs of overwatering include standing water that takes a long time to evaporate, while underwatering is indicated by discoloration and dryness. Adjust the schedule accordingly.
Setting the Date and Time
1. Turn the dial to SET CURRENT DATE/TIME. 2. Use the + and - buttons to set the current year, then press → to move to month/day. 3. Use + and - to set the month, then press → to move to the day. 4. Use + and - to set the day of the month. The day of the week is automatically indicated. Press → to move to time. 5. Use + and - to select AM/PM or 24-hour format. Press → to set hours, then use + and - to adjust. Press → to set minutes, then use + and - to adjust. The date and time are now set.
Setting Watering Start Times
1. Turn the dial to SET WATERING START TIMES. 2. Select Program A, B, or C using the PRG button. 3. Use the + and - buttons to set the start time (increments of 15 minutes). One start time activates all stations in the program sequentially. Multiple start times can be used for separate watering cycles (morning, afternoon, evening). 4. Press → to select the next start time or PRG for the next program. The Pro-C will automatically sort start times chronologically. To remove a start time, set it to 12:00 AM and press - to set it to OFF. If all start times for a program are OFF, the program is disabled.
Setting Station Run Times
1. Turn the dial to SET STATION RUN TIMES. 2. The display shows the station number and program letter. The run time for that station flashes. Select Program A, B, or C using the PRG button. 3. Use the + and - buttons to change the run time. 4. Press → to advance to the next station. 5. Repeat steps 3 and 4 for each station. Run times can be set from 1 minute to 6 hours. You can switch between programs for the same station, but it is recommended to complete one program before switching.
Setting Watering Days
1. Turn the dial to SET DAYS TO WATER. 2. Select the desired program (A, B, or C) using the PRG button. 3. The display shows the selected day schedule. Options include specific days, interval watering, or even/odd days. 4. Specific Days: Use the + button to activate watering for a specific day (starts with Monday). Use the - button to deactivate watering for that day. The display uses a checkmark (✔️) for watering and a cross (❌) for no watering. Repeat for all desired days. 5. Interval Watering: Use the → button to select "Interval" and "Days Left". Use + to increase the interval. Press → to select "Days Left" and use + / - to set the number of days until the next watering. 6. Even/Odd Days: Set the interval to 1. Use the → button to select EVEN or ODD. Use the - button to specify which type of day to *not* water. For example, selecting ODD means watering only on even days. The 31st of any month and February 29th are always considered "OFF" days if ODD is selected.
Rain Sensor Bypass and System Off
Rain Sensor Bypass: To bypass the rain sensor for specific zones, turn the dial to RUN. Hold the - button and turn the dial to START TIMES. Release the - button. The station number and "ON" will appear, and the T symbol will blink. Use the + / - buttons to set ON (sensor enabled) or OFF (sensor bypassed) for the sensor for each station. Use the → button to cycle through stations. The Pro-C is set to bypass all sectors when it rains by default. If a station is programmed to bypass the sensor, it will be indicated by the and symbols blinking together.
System Off: To stop all active programs temporarily, turn the dial to SYSTEM OFF for 2 seconds. Watering will cease. Return the dial to RUN to resume normal automatic operation.
Manual Single Station Start
1. Turn the dial to MANUAL-SINGLE STATION. 2. The station's run time will flash. Use the → button to select the desired station. Use the + or - buttons to set the run time. 3. Turn the dial clockwise to the RUN position to start watering only that station. The controller will return to automatic mode afterward.
Seasonal Adjustment
This feature allows global adjustment of run times without reprogramming. Turn the dial to SEASONAL ADJUSTMENT. Use the + or - buttons to set the percentage from 5% to 300%. This is useful for adjusting watering based on seasonal weather changes.
One Touch Manual Start and Advance
You can start a program without the dial: Hold the PRG button for 2 seconds. The controller defaults to Program A; you can select Program B or C using the PRG button. The station number will flash. Use the → button to cycle through stations and the + / - buttons to adjust run times. If no button is pressed for a few seconds, the controller will automatically start Program A. Press the → button to advance to the station you want the program to start with. The program begins after a 2-second pause. This is useful for quick watering cycles or system inspection.
Advanced Functions
Setting Pump Operation
By default, the master valve/pump start relay circuit is ON for all stations. You can set this to ON or OFF for individual stations. Turn the dial to SET PUMP OPERATION. Use the + and - buttons to set the master valve/pump to ON or OFF for the specific station. Press → to advance to the next station and repeat for all desired stations.
Programmable Rain Off (Interruption)
This function allows you to stop all programmed watering for a specific period (1 to 7 days). Turn the dial to SYSTEM OFF. Press the + button; "1" will appear, and the "DAYS LEFT" symbol will also appear, with "1" flashing. Press + repeatedly to set the desired number of days (up to 7). Return the dial to RUN to confirm. The "OFF" and "DAYS LEFT" symbols will remain visible. The "off" days count down at midnight each day. When the count reaches zero, normal watering resumes at the next scheduled start time.
Troubleshooting
Common Problems and Solutions
| Problem | Cause | Solution |
|---|---|---|
| No display. | Check power cables. | Correct any errors. |
| Display shows "ERR”. | Electrical fault present. | Check SmartPort wiring. If extended, consider shielded cable. |
| Display shows "P ERR”. | Fault in wiring to pump start or master valve. | Check pump start/master valve cable. Replace or repair cable if shorted. Ensure all cables are good and waterproof. |
| Display shows "2 ERR" (or other station number + ERR). | Fault in the cable to that station. | Check station cable. Replace or repair if shorted. Ensure all cables are good and waterproof. |
| Display shows "NO AC”. | No power to the computer. | Check transformer connection. |
| Display shows "SENSOR OFF”. | Rain sensor is interrupting watering, or the sensor jumper is not installed. | Set the Rain Sensor switch to BYPASS or install the sensor jumper. |
| Rain sensor not triggering the system. | Incompatible rain sensor (e.g., "micro-switch" type needed, not Mini-Clik "Rain Check"). | Check if the sensor is a "micro-switch" type. Ensure the jumper is removed from the SEN terminals if not using a sensor. |
| Pro-C continuously recognizes 12 stations. | Too many start times programmed. | Ensure only one start time is needed per active program. Refer to "Setting Watering Start Times" on page 11. |
| Pro-C does not respond to all stations (e.g., shows only 6 stations when 12 are connected). | Pro-C does not recognize modules. | Turn off power, remove battery (if present). Check all module connections. Turn power back on. The microprocessor should now recognize all modules. |
| Pro-C recognizes only 3 stations. | Programming error, dial in wrong position. | Check dial position. Number of stations can be verified by setting dial to SET STATION RUN TIMES and pressing the → button. |
| Pro-C waters continuously, even when not supposed to. | Too many start times programmed. | Only one start time is required per active program. Refer to "Setting Watering Start Times" on page 11. |
Frequently Asked Questions (FAQ)
Question: What conduit diameter should be used for field wiring?
Answer: Refer to the table below for conduit diameter versus wire gauge. For example, 49 wires of 1.0 mm² can fit in a 40mm conduit.
| Wire Size | Conduit Diameter | ||
|---|---|---|---|
| 25mm | 32mm | 40mm | |
| 1.0 mm² | 20 | 34 | 49 |
| 1.2 mm² | 16 | 30 | 42 |
| 1.5 mm² | 10 | 18 | 25 |
| 2.0 mm² | 7 | 15 | 20 |
Question: Cannot expand with only a PCM-900 (9-station module)?
Answer: Expansion must first be done with a PCM-300 (3-station module). A PCM-900 can only be installed in the upper expansion slot.
Question: What are the expansion possibilities?
Answer: Only the following combinations are possible:
- To expand to 6 stations: Install one PCM-300.
- To expand to 9 stations: Install two PCM-300 modules.
- To expand to 15 stations: Install one PCM-300 and one PCM-900 module.
Specifications
Functions
- Station Run Time: 1 minute to 6 hours in 1-minute increments per program (A, B, C).
- Start Times: 4 per day, per program, totaling 12 start times per day.
- Watering Schedule: 7-day calendar, interval (1 to 31 days), even or odd day programming.
Electrical Specifications
- Adapter Input: 230VAC, 50Hz
- Adapter Output: 24VAC, 1.0 amps
- Station Output: 24VAC, 0.56 amps per station
- Maximum Output: 24VAC, 0.84 amps (includes Master Valve Circuit)
- Battery: Not required for program memory. A 9-volt alkaline battery (not supplied) can be used to program the controller without power. Program data is retained in memory.
Dimensions
- Length: 21 cm
- Width: 24 cm
- Height: 9 cm
Standard Settings
All stations are initially set to "zero" run time. The computer has "non-volatile" memory that retains all programmed data, even during power failures, without the need for a battery.
