Specialty Concepts SC3/10) - Manual (Page 7)

”QUICK” TROUBLESHOOTING
IF THE CONTROLLER IS NEWLY INSTALLED, CHECK THESE THINGS FIRST:
1) Re-check system wiring to insure proper installation and polarity .
2) Check all system fuses and circuit breakers. Before replacing a blown fuse,
locate and correct the cause.
3) Check to see that modules and batteries are in the correct series-parallel
configuration for proper system voltage and current.
4) Review the controller specifications, operation and set-points, particularly the
charge termination and reconnect voltage set-points. If possible, check set-
points while the controller is in operation, monitoring the battery voltage with a
multi-meter.
5) Review controller specifications, array output, load ratings and system sizing to
insure that ratings are not exceeded.
IF THE CONTROLLER HAS BEEN INSTALLED AND WAS PREVIOUSLY
WORKING PROPERLY, CHECK THESE THINGS FIRST:
6) Check all system fuses and circuit breakers. Before replacing a blown fuse,
locate and correct the cause.
7) Confirm that all connections are sound. In particular, check crimp connections
that have been crimped but not soldered as these connections tend to
deteriorate over time.
8) If you have an accurate volt meter, check for a voltage drop between the
controller and the battery when maximum charging is occurring. Drops often
occur through old fuses, fuse holders or circuit breaker boxes and at loose or
corroded connections.
9) High voltage from nearby lightning strikes or unregulated charging sources can
damage the controller, in spite of the built-in lightning protection.
10) Check output from the array, and that the array is not partially shaded or dirty.