The RD600/900/1200-R RainDial Timers may display P:On or P:Off on the LCD.
This is one of the features in the new -R series of Irritrol sprinkler timers. It’s described in the manual in more detail but basically does this. The Sprinkler timer has a pump control signal that normally turns on when a particular valve is turned on. Most people I know don’t have a pump to boost pressure in their irrigation system so it’s not a common feature for the general urban irrigation system. If for some reason you did not want the pump to come on when a particular valve was on, you can turn it off.
You can change the P:ON/OFF setting by doing the following:
- setting the main switch to the Set-Programs position,
- Set the dial to the valve you want to change the pump on/off settings for,
- Press the Manual-On button. It will toggle between P:On and P:Off each time you press Manual – On.
If you don’t have a pump, it doesn’t matter whether you turn this feature on or off. If you do have a pump, you’ll know what to do.
If you’re not expecting this to appear on the LCD, you probably need to slide the switch to the “run” position instead of “set programs.”
How does this happen? Some people try to manually turn on a valve but accidentally have the switch in the set-programs position instead of ‘run’ when they add minutes.
I hope that helps,