Question
I'm at a loss of what to do.  I have a Water Master 57161 6 zone system, and all the zones keep coming on and off.  The system will come on at the set time and day; will be running at full pressure for 1-2 minutes, then shut off; then come back on a minute or 2 later then back off. Each zone keeps repeating that way for the desired time as it moves through its cycle.  Can you give me an idea what is wrong?  I've unplugged, removed batteries and reset the system, but it still does it.  Any information with be appreciated.

Thanks
Larry

Answer
I think that your circuit board is fried.  You could try cleaning it with the canned air and a very soft brush, and see if that helps.  Also try leaving it off for several days, then fire it up.  But I really have misgivings about it.  It will likely need to be replaced.  I just thought of something else.  Make sure that your common wire is connected solidly, and that the common connection at the valves is good.