Epever DR3210N-DDS - Controller Protection Details; Lithium Battery Low Temperature Protection; Controller Overheating and Transient Protection

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when its temperature is below 55 °C.
BATT1Low
Temperature(Lithiu
m Battery)
When the temperature detected by the optional temperature
sensor is lower than the Low Temperature Protection
Threshold (LTPT), the controller will stop charging and
discharging automatically. When the detected temperature is
higher than the LTPT, the controller will work automatically
(The LTPT is 0 °C by default and can be set within 10 ~
-40 °C).
Controller
Overheating
The controller can detect the temperature inside the
controller. The controller stops working when its temperature
exceeds 85 °C and restarts to work when its temperature is
below 75 °C.
TVSHigh Voltage
Transients
The internal circuitry of the controller is designed with
Transient Voltage Suppressors (TVS), which can only
protect against high-voltage surge pulses with less energy.
Suppose the controller is to be used in an area with frequent
lightning strikes. In that case, it is recommended to install an
external surge arrester.
4.2 Troubleshooting
Faults phenomenon
Possible
reasons
Troubleshooting
Charging LED indicator off during
daytime when sunshine falls on PV
modules properly
PV array
disconnection
Confirm that PV wire
connections are correct and
tight.
The wire connection is correct, and
the controller is not working.
Battery voltage
is lower than
8.5V
Please check the battery
voltage—at least 8.5V to
activate the controller.
DDS: Red fast flashing
BATT1over
voltage
Check if the battery voltage is
higher than OVD
(over-voltage disconnect
voltage), and disconnect the
PV.
Battery level shows
full, battery frame
blink, fault icon blink