Can anyone tell me why I am seeing an alarm light illuminated on my controller panel? I have a new irrigation system that was installed in September, '07 and the light was never on during the time/weeks/month(s) I was using the system. Approximately 2 weeks ago, my contractor came out to the house to blow out the system for winter. Since then, I haven't had a need to open the door to the control panel until yesterday when I had to reset the day/date (power outage). This is when I noticed the red light. Is it normal for the light to come on when the system has been shut down during winterization? Should I be concerned about anything being wrong such that I need to call the contractor? Oh yeah....it is a Rainbird controller. I think it is the ESP model....esp100??? Whatever model number it is, I don't think it was terribly expensive as this is a rather simple 7 zone system. If you need specifics, let me know and I'll get the model #. Thank you for your help!!!