Problem
Possible cause
Solution
The indicators are lit up/
there is a buzzer sound.
Incorrect polarity
Pull out the power cord,
correct the polarity and
reconnect.
The fault indicator is
illuminated.
•
Low battery voltage - < 3V (6V
battery); < 8V (12V battery).
•
High battery voltage - > 15V
(12V battery); > 7.5V (6V).
Repair or replace the
battery.
The battery has stopped
charging.
The battery has short-circuited.
Repair or replace the
battery.
TROUBLESHOOTING
