WeCo Srl Italia
www.wecobatteries.com
4K4 PRO V 1.11 28-9-2021
7 TROUBLESHOOTING * (WeCo Monitor via RS 232)
No.
ALARM
SYMPTOM
SOLUTION
PC Software
GREEN (NORMAL)
RED (FAULT)
1
OVER
CURRENT
ALARM
The
battery
relay
is
disconnected during charging
or discharging, and the battery
fault light is flashing.
Reduce charge or discharge
current
2
OVER TEMPERATURE
ALARM
The
battery
relay
is
disconnected during charging
or discharging, and the battery
fault light is flashing.
Stop charging or discharging,
wait until the battery
temperature drops and then
reuse
3
LOW TEMPERATURE
ALARM
The battery is unable to charge
or discharge normally
Waiting for the temperature
of the battery to rise to a
suitable temperature before
charging or discharging
4
OVER
VOLTAGE
ALARM
The
battery
relay
is
disconnected when charging,
and the battery fault light is
flashing.
Stop charging and review
and reset properly the
inverter settings ( WeCo
suggests to use Closed Loop
CAN-BMS inverters)
5
LOW
VOLTAGE
ALARM
The
battery
relay
is
disconnected
when
discharging, and the battery
fault light is flashing.
Stop
discharging
from
battery. Charge the battery
in accordance with the
correct charging procedure.
6
RELAY DAMAGE
The battery is switched on,
there is no alarm, but no
voltage is present. The battery
is switched off, there is no
alarm, but voltage is present
(always check for with voltage
with a meter at all times)
Please contact the after-
sales service, replace relay
When this sign is disconnected and
green, the relay is disconnected;
When this sign is connected and red,
the relay is connected;
7
PROTECTION BOARD
DAMAGE
The PC and the batteries
RS232 connection is reliable,
but the monitoring software
cannot read the battery
information and status.
Please contact the after-
sales
service,
replace
protection board.
