PWM Mode
Solar Charge Controller Manual
ADD
：
No.99 Yonghe Rd,High-Tech Zone,Hefei,Anhui
Phone
：
0551-65372576
http://www.hfjnge.com
- 13 -
5.2 Troubleshooting
If following failure occurs, please follow method below to check and troubleshoot
：
5-2 Troubleshooting table
Error
Alarm icon
Possible reasons
Methods
Array
overvoltage
V PV and
showi
ng & flashing
number of pv array series
is more or some pv
modules are abnormal
Disconnect pv array, reduce number of pv array
groups in series or detect voltage value of each pv
module to ensure that open circuit voltage of pv
array does not exceed value set in the "pv electrical
parameters" table
；
Battery
overvoltage
OVD and
showi
ng & flashing
1.overvoltage protection
point of controller is lower
than highest value of
charging range;
2.
Aging
or
over
discharge of battery;
3.
Overdischarge
of
battery;
4.Large dynamic change
of load;
1.Reset battery overvoltage protection point through
device button or PC upper computer or APP;
2.The aging battery needs to replace battery;
3.Overdischarge requires manual setting of battery
voltage level;
4.Reduce large dynamic changes of load;
Battery
undervoltage
Under and
showi
ng & flashing
battery voltage is lower
than undervoltage
protection set
1. Reduce or disconnect load. If alarm is lifted and
battery voltage returns to normal, it means load
power is too large or battery voltage and capacity
are too low, overload may easily lead to under-
voltage protection;2. Disconnected load controller
still gives an alarm, battery voltage has not
recovered to over-discharge recovery set value. It is
necessary to charge battery group through
photovoltaic or other ways to make battery group
voltage reach set value of recovery point before
fault can be relieved
Indicator light
is not on,
display
screen is not
displayed
battery voltage is lower
than device starting
voltage
Use multimeter to test whether voltage at both ends
of battery is lower than 7V;
It is necessary to charge battery pack by other ways
to make battery pack voltage reach more than 8V;
Radiator
overheating
showi
ng & flashing
1. ambient temperature is
too high, heat dissipation
of equipment is poor, and
air convection is not
smooth
1.Check installation environment of equipment,
remove sundries around equipment, and ensure
smooth natural ventilation;
Charging flow
I charge and
showi
ng & flashing
Overcurrent protection
check current detection
abnormal, false action
Restart several times if not solved, need to return to
factory for maintenance;
Loading flow
I load and
showi
ng & flashing
load power is too high
1. Reduce load power;
2. Restart and remove fault;
3. Without excessive perceptual and capacitive
load;
Note
：
In addition to failure of battery to start up due to low voltage, other failures can refer to the failure
information through background of PC or mobile APP