Specialty Concepts ASC-Plus - Manual (Page 18)

ASC-Plus PROBLEM DESCRIPTIONS
(from the ASC-Plus PROBLEM CHART)
ASC-Plus Case 1 - A continuous low voltage condition with good charging during the day
would indicate that the controller is functional but a problem exists with one of the
following:
•
A problem exists with the system sizing. See SYSTEM IS NOT SIZED CORRECTLY
(Help Note #5)
••
A problem exists with the solar panels. See SOLAR PANEL PROBLEM SECTION
••
A problem exists with the batteries. See BATTERY PROBLEM SECTION
ASC-Plus Case 2 - A low voltage condition with no charging during the day would indicate
one of the following:
•
The system has no panel input. See BAD CONNECTION: PANEL (Help Note #8)
••
The ASC-Plus may be defective. See CONTROLLER DEFECTIVE (Help Note #12)
ASC-Plus Case 3 - A moderate voltage condition where the charging appears to stop too
soon (below 14.1 volts) would indicate one of the following:
••
The ASC-Plus may have a bad battery connection. Somewhere in the battery connection
there could be a voltage drop that would cause the controller to sense a higher
battery voltage than what actually exists. See BAD CONNECTION: BATTERY (Help
Note #9)
••
Temperature Compensation (Option-A) can change the controller set-points. See
TEMPERATURE (Help Note #4)
••
The ASC-Plus may be defective. See CONTROLLER DEFECTIVE (Help Note #12)
TEST: - Try to monitor the voltage at the ASC-Plus "BATT (+)” and "BATT (-)” terminals when
the controller actually stops charging (CHARGING light goes OFF). If the voltage at the
ASC-Plus terminals is about 14.3 volts then assume a voltage drop along the battery
connection is causing the problem.
ASC-Plus Case 4 - A high voltage condition with additional charging would indicate one of
the following:
•
The battery voltage may be just under the charge termination set-point and not need to
shut off. See NORMAL OPERATION: CHARGING / NOT CHARGING (Help Note
#1)
••
Temperature Compensation (Option-A) can change the controller set-points. See
TEMPERATURE (Help Note #4)
•
The ASC-Plus may be defective. See CONTROLLER DEFECTIVE (Help Note #12)
ASC-Plus Case 5 - A high voltage condition (over 14.5 volts) with the solar charging
terminated during the day would indicate the controller is functional but the batteries are
being over-charged by a second charging source. Other charging sources should feature
their own charge regulation.