What to do if my Irritrol RD-900 Control Unit display is blank?
If the display is blank, it indicates a power issue. First, check the circuit breaker panel. Then, inspect the wiring connections and the transformer. Finally, check the controller terminal board fuse.
Why is the current time wrong and flashing on my Irritrol Control Unit?
A flashing current time indicates that a power outage occurred, and the controller either has no battery or a weak battery. Replace the battery and reprogram the controller to resolve this.
How to fix Irritrol Control Unit watering at wrong times?
If your system is watering at the wrong times, the CURRENT TIME of day may be incorrectly set. Check and reset the CURRENT TIME to correct this.
What to do if my Irritrol Control Unit waters on wrong days?
If your system waters on the wrong days, the Weekly or Skip Days schedule are likely incorrectly set. Reprogram the Program Schedule to ensure correct watering days.
What to do if the program won’t display on my Irritrol RD-900 Control Unit?
If the program won’t display, ensure the Function Switch is in the RUN or MANUAL setting. If it still doesn't display, the controller might be in a watering cycle. Change the program with the Function Switch in Set Programs.
Why is the display flashing on my Irritrol RD-900 Control Unit?
A flashing display indicates an excessive load, possibly due to a shorted solenoid or field wiring. Check the maximum ratings and inspect the solenoids and wiring for any issues.
What to do if my Irritrol Control Unit valve won’t turn off (function switch off)?
If a valve won’t turn off even with the function switch off, it's likely due to a mechanical override, meaning the Manual bleed is on. Turn the solenoid on top of the valve fully clockwise to resolve this.
What to do if the display is incorrect on my Irritrol RD-900 Control Unit?
If the display is incorrect after a power outage or being unplugged, the battery is likely weak or missing. Remove AC power and the battery for 1 minute. Replace the battery, restore power, and reprogram the controller.
General| Model | RD-900 |
|---|---|
| Programs | 3 |
| Rain Sensor Compatible | Yes |
| Weight | 1.5 lbs |
| Indoor/Outdoor | Indoor/Outdoor |
| Power Source | Transformer |
| Voltage | 24V AC |
| Backup Battery | 9V |
Outlines the primary functionalities and benefits of the Rain Dial controller system.
Step-by-step instructions for mounting and installing the controller indoors.
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