Power shut off switch box humming
First, as a newbie to this forum thank you in advance for any and all replies!
My system problems started a few months back when the straight fuse (not the back up fuse) blew and the controller read PWR OFF. I called a sprinker co for repair, they told me it was a solinoid in Zone 1 and they fixed the problem at the value box. The system worked good for about a month until I noticed (right from the start) that Zone 1 stayed on through the whole watering cycle. Next the straight fuse blew again (just once)but was ok for about another month. Next I noticed a humming coming from the turn off switch box on the side of the house which I assume goes to the well pump? The humming increases 10 fold when Zone 1 is on ( I manually switch off zone 1 when the system has finished watering that section of the lawn) and is still there for the rest of the cycle. Last night I blew 2 more straight fuses before permanently shutting off zone 1.
I realize sometimes it is hard to diagnose without witnessing the problem but I appreciate any suggestions and remedies. I'm through with the sprinker repair company and can't afford to hire a new one for awhile. Thanks again.