Question
I have a six station watering system.  It's been working fine until recently. The display is reading short.  What should I do?  Is that the sign of a major problem with my system?

Answer
You have an electrical short somewhere in the system.  Most often these are in the wire connections at the valves, or the solenoid has gone bad.  It is a process of elimination.  Check all the wire connections at the valves, and replace them with waterproof wire nuts if necessary.  You have to physically remove and inspect the solenoids to see if they are working right.