Samlex America SCC-30AB - Manuel (Page 47)

47
7
TroubleshooTing
SCC-30AB is very rugged and designed for the most extreme operating conditions.
Most PV system problems will be caused by connections,Voltage drops, and loads.
Troubleshooting the SCC-30AB controller is simple. Some basic troubleshooting
procedures are listed below.
Protections & Fault Messages on the LCD Display & Fault LED
Table 7.1 gives fault messages displayed on the LCD screen and status of the Red Fault
LED when SCC-30AB stops operating due to protections / system error:
DISPLAy
FAULT
LED
DESCRIPTION CAUSE OF FAULT / REMEDy
Alarm: OC
Over Current Solid
Red Over
Current Input current exceeds 45A
Alarm: OT Blinking
Red Heat Sink over
Temperature Heat sink temperature exceeds 90ºC
Alarm: CPF00
Link Master
Error Solid
Red Display Panel
Error The CPU is not able to exchange data with
the Display Panel
Alarm: CPF04
DC / DC
LowV Solid
Red Low
Voltage 3. Low Battery Voltage:
< 9V for 12V Battery
< 18V for 24V Battery
4. If this symptom is for a 12V Battery
System, check & ensure that DIP Switch
1 at the back of the unit is selected for
12V battery and not for 24V battery.
Alarm: CPF09
Heat Sink SR
Open Solid
Red Low Operating
Temperature Operating temperature is below 0ºC (32ºF).
Ensure operating temperature is above 0ºC
(32ºF).
Battery
Temperature
Sensor (BTS)
displays
- - - ºC N/A Battery
Temperature
is below 0ºC 1. Lower limit of temperature compensation
is 0ºC.
2. Negative values can’t be displayed.
Table 7.1. Fault Indications & Remedies