Quote:
Originally Posted by jarodrig
Sorry to disagree, but the SOLE purpose of that 9 V battery is so that the programming is not wiped in the event of a power outage.
The 9 V battery WILL NOT run the irrigation system. Power to the house has to be on for the irrigation system to function.
That is why the lawn and landscaping is one of the LAST things that are done. At that point, the landscaping contractor will set up and run the system to make adjustments.
So, if you don’t want to install a battery in your controller you WILL loose your programming should your power go out during a weather incident….
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Not correct. This is from the Hunter manual. The battery is not needed to save the programming of the controller, per the last sentence.:
"Connect a 9-volt alkaline battery (not included) to the battery terminals and place in the battery compartment in the front
panel. The battery allows the user to program the controller without AC power. Watering will not occur without AC power.
Since this controller has non-volatile memory, the program clock and calendar will be retained during a power outage even if no
battery is installed."
Note that I don't have a battery installed, and I have never lost my programming during many power outages.