Fault
Status
Reason Remedy
Over
voltage
protection
Ba tt ery
ca n’ t be
ch ar ged
Overcurrent,
short circuit
protection
Battery capacity
is low
Loads are
over current
or short circuit
High battery
voltage >
(CVT+0.2V)
PV panel fault
or reverse
connection
Load will be reconnected
when battery is recharged
Switch off all loads,
remove short circuit,
load will be reconnected
after 1 minute automatically
Can not
be
charged
Lo w
voltage
protection
Lo w volt.
protection
Over temp.
protection
Controller temp.
Is too high
Load reconnects
after temp. reduces
High
voltage
at
battery
terminal
Solar charge controller MPPT-DC series User Manual
11.LED indications and Faults & Alarms
11.1LED Display Explanation
11.2Faults & Alarms
Loads
are
not
powered
Check if other sources
overcharge the battery.
If not,controller is damaged.
Battery wires or
battery fuse
damaged,
battery has high
resistance.
Check battery wires,
fuse and battery.
Battery is
empty
after a
short time
Battery has low
capacity
Change battery
Check panels and
connection wires
Page 4 of 5 pages
八、安全特性及故障描述
9.Safety Features
10.Recommended connection of LED
Following connect ways is for the LED lights
(Vf: 2.9V~3.4V; I: 300mA, Power: 1W )
n for number of parallel connection
m for number of
in series connection
Short circuit
Over current
Over voltage
Over temp.
Reverse
polarity
Solar terminal
Protected
1
Protected*
Protected
*3
Max.25V
Battery terminal
Protected
*2
Protected
Load terminal
Protected *1
Switches off
Switches off
with delay
The controller cuts off the load if the
temperature reaches the set value.
Switches off
immediately
Reverse
Current
Under
voltage
*1.When the PV doesn't charge, the controller will not be
damaged if short-circuit just happened in the PV array.
Warning: It is forbidden to short-circuit the PV array during
charging .Otherwise, the controller may be damaged.
*2.Battery must be protected by fuse, otherwise battery will be
damaged.
*3.Please refer to "12.Technical Data" to get the max voltage
of PV panel.
*4.Please refer to "12.Technical Data" to get the max voltage
of battery.
!
may cause damage to the controller.Always remove the
error before you continue connecting the controller.
Warning: The combination of different error conditions
*1.If the controller is in transport mode, the red LED
is super slow flash(0.2s on/5s off ), the green and
yellow led is off.
*2.Detailed fault information can be read by S-Unit
remote controller.
LED
Status
Function
On
On
On
Flash(0.5/0.5s)
Fast flash(0.1/0.1s)
Work normal
The output power is 0.
Open circuit
*1
transport mode.
or
Off
Off
Slow flash(0.5/2s)
Slow flash(0.5/2s)
Slow flash(0.2/5s)
Fast flash(0.1/0.1s)
Fast flash(0.1/0.1s)
Charging
Solar panel is correctly
connected,
but not charged
Green
LED
Over temperature
protection
*
Over current protection
2
Short circuit or
Over voltage protection
Battery is normal
Yellow
LED
Red
LED
MPPT charging
Low voltage protection
Battery voltage is low
Load Current
Output
Voltage
LED chips
connection
M=4~10
N=1~5
M=4~10
N=1~10
0.1~1.5A
0.1~3A
12~34V
*4
Max. 10V
Red
Yellow
Gree n
Red
Yellow
Gree n
Emitting
Receiver
Infrared communication version
2.4G version