We had some rain five or six days ago and irrigation was suspended by our Rainbird WR2 sensor. Every morning since then though I've been getting the same "local rain detected" message--and no irrigation--even though there's been no rain. During the day the message goes away and the next irrigation event is listed correctly, but then I wake up to the "local rain" and no irrigation on dry plants.

The manual doesn't list any maintenance or troubleshooting suggestions. Any thoughts?