RainJet Manuals & User Guides

About RainJet

RainJet is a trusted name in do-it-yourself automatic watering systems, offering durable electronic timers and irrigation controllers designed to streamline lawn care. Originally part of the James Hardie Irrigation family alongside Lawn Genie, RainJet products are engineered to provide efficient and reliable water management for residential landscaping.

Known for classic models like the RJ46 Automatic Watering System, the brand's controllers feature user-friendly programming, allowing homeowners to set multiple zones, watering durations, and intervals with ease. While RainJet focuses primarily on landscape watering, their legacy devices continue to be favored by DIY enthusiasts for their straightforward installation and robust performance.

• How do I set the watering run time on my RainJet timer?

  Press the ZONE button to select the desired zone. Press HRS or MIN to set the run time (0-99 minutes). Repeat for other zones and set unused zones to 00. Press CLOCK to finish.

• What does it mean if 'F' is displayed on my RainJet timer?

  An 'F' display indicates a short circuit in a solenoid or wire connection. Check your valves and wiring. Note that the remaining active zones will continue to water normally.

• How do I manually start watering on my RainJet system?

  To water all zones in sequence, press the MAN button once. To water a specific zone manually, press ZONE until the desired zone is displayed, then press MAN.

• How do I pause the RainJet system when it rains?

  Press the RAIN button, and an 'R' will be displayed on the screen. To resume automatic mode, simply press the CLOCK button.

• Does the RainJet timer have a battery backup?

  Yes, you can install a 9-volt battery in the battery clip located on the bottom left side of the unit. This will maintain your set program for up to 24 hours during a power loss.