4 status LEDs are for optical monitoring of the charging process:
1. mains (green),
2. impulse (yellow),
3. charge (green),
4. error (red).
Notice:
The device is electronically protected against accumulator polarity reversal.
10
operating display, mains on
impulse display (displays charging impulses)
continuous display = charging,
flashing display = transition or compensation charge
continuous display = charging error