35
5.2 Troubleshooting
Trouble Shooting
Table 5-1
Faults
Possible
reasons
Troubleshooting
Charging LED indicator
off during daytime when
sunshine falls on PV
modules properly. the PV
of monitoring interface
shows Disconnect.
PV
array
disconnection
Check
that
PV
and
battery
wire
connections are correct and tight.
Charging circuit is off and
the PV of monitoring
interface
shows
Over
Current.
Charging
current
is
more
than
nominal
current value
Please check whether solar panel array
match with nominal parameters of
controller; When Charging current reaches
1.05-1.25 times, 1.25-1.5 times and 1.5
times more than nominal value, controller
will automatically close loads in 60
seconds, 5 seconds and 1 second,
respectively. Controller is automatically
circularly activated so as to reconnect
charging circuit. Every reactivating is 60
seconds delayed, but not limits on number
of times.
Charging and discharging
circuit is off and the PV of
monitoring interface shows
Measure
Err
、
MOS-I
Short
、
MOS-C Short
、
MOS
Break.
MOS-I
or
MOS-C
is
damaged.
Please restart controller, if the fault still
exists, immediately switch off charging
and discharging circuit; contact the
supplier to make maintenance.
Loads do not work and the
BATT
of
monitoring
interface shows LVD.
Battery
over
discharged
The controller cut off the output,
automatically
recovered
when
fully
charged.
