Irrigation system controller (Rain Dial #RD-1200 - James Hardie Irrigation). Also connected to system is a rain sensor.

Used the "manual mode" for one zone with success yesterday. This a.m. the auto irrigation failed to run and I'm unable to modify any setting. Unable now to run manually. The "display" is frozen with code #1112 in upper right.

All system "checks" have been performed; 9 Volt battery change, plugs, electrical connection. Please advise.