KISAE SC 1220LD Solar Charge Controller - Manual (Page 5)

Step 2: Connecting a 12V battery
 Connect ‘-‘ terminal of Energy Storage (pin 4) on unit to 12V battery
negative terminal
 Connect ‘+’ terminal of Energy Storage (pin 3) on unit to 12 V battery
positive terminal
Step 3: Connecting a PV panel
 Connect ‘-‘ terminal of Solar Input (pin 2) on unit to PV panel negative
terminal
 Connect ‘+’ terminal of Solar Input (pin 1) on unit to PV panel positive
terminal
Step 4: Connecting a DC load
 Connect ‘-‘ terminal of Load Output (pin 6) on unit to PV panel negative
terminal

Co
nnect ‘+’ terminal of Load Output (pin 5) on unit to PV panel positive
terminal
Note: Maximum wire size of AWG#10 can be used on the terminal and tighten
the screws snugly.
6. Operation and Maintenance
The unit is fully automatic and no unit setting is required once it is installed
properly. It is recommended to verify the state of charge of the battery regularly
and to verify that the load connected to the unit is not over rated for the unit. It
is also recommended to verify that the power consumption on the load is less
that the PV panel can produce.
The following periodic inspections and maintenance tasks are highly
recommended for best performance.

Check for any rusting or corrosion around the battery terminals

Verify the PV panels and loads connected do not exceed the unit rating

Tighten all the 7 terminal screws and inspect for any loose, broken or
burnt wire connections.

Ensure PV panel is mounted properly and is placed in the right position.
Check for any dirt, debris and corrosion on the panel.

Periodically clean solar panels with water and do not use chemicals
7. Troubleshooting
No Output:

Check DC load terminal connection. Connection may be loose or
disconnected.

Check connection polarity. Reverse polarity on any terminals will damage
unit and is not covered by warranty.

Verify battery voltage is not too low.

For LD model, check Load disconnect LED is ON. Verify battery voltage
is above 12.6V.
Battery did not charge:

Verify the PV panel is functioning properly. Check for poor connection on
the PV panel

Verify PV panel is not blocked by any surrounding tall objects. Check the
PV panel surrounding area.

Check PV and battery connection. Loose connection will reduce unit
performance.