Specialty Concepts SC2 - Manual (Page 14)

BATTERY OVERCHARGING
CONTROLLER ALWAYS IN FULL CHARGE ("CHARGE MODE" LIGHT ON)
See General Note #6 above: The battery may not be reaching the charge termination set point.
See General Note #3 above: No voltage at the BATTERY VOLTAGE SENSE terminals tells the
controller that the battery voltage is low and needs to be charged more. Install a connection
from battery to "BATTERY VOLTAGE SENSE" terminals to resolve.
See General Note #8 above: A damaged temperature sensor or wire will cause the controller to
malfunction and requires immediate replacement.
CONTROLLER NOT IN CHARGE MODE ("CHARGE MODE" LIGHT OFF)
Disconnect solar panel, then reconnect. Listen for relay to click and for "CHARGE MODE" light to
come back on. If the light goes on but you hear no click, the relay or controller may be
defective.
Check for other charging sources that are not properly regulated, causing the battery to
overcharge.