automatically (The LTPT is 0 °C by default and can be set within the range
of 10 ~ -40 °C).
Load short
circuit protection
When a short circuit occurs on the load side (which is 4 times higher than
the rated load current), the controller automatically cuts off the output. The
output still attempts to resume five times automatically (delay 5 seconds, 10
seconds, 15 seconds, 20 seconds, 25 seconds). Suppose you want the
controller to restart the auto-recovery process. In that case, you need to
press the Load button, or restart the controller, or experience a night-to-day
change (night time ＞3 hours).
If the load current exceeds 1.05 times the controller's rating, the controller
will cut off the output after a delay. After the overload occurs, the output
attempts to resume automatically five times (delay of 5 seconds, 10
seconds, 15 seconds, 20 seconds, 25 seconds). Suppose you want the
controller to restart the auto-recovery process. In that case, you need to
press the Load button, or restart the controller, or experience a night-to-day
change (night time ＞3 hours).
Device
overheating
protection
An internal temperature sensor can detect the internal temperature of the
controller. The controller stops working when its internal temperature higher
than 85℃and resumes working when its internal temperature is below 75℃.
TVS high
voltage
transients
protection
The controller's internal circuitry 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.
★ When the controller's internal temperature reaches 81℃, the charging power automatic reduction
function is enabled. Temperature increases by 1 ℃, the charging power is reduced by 5%, 10%, 20%,
and 40%. If the internal temperature is higher than 85℃, the controller stops charging the battery. When
the internal temperature is not more than 75ºC, the controller resumes charging per the rated charging
power.
4.2 Troubleshooting
When there is plenty of direct
sunlight on the PV array, the LCD
shows
Confirm whether the connection of the
PV array is correct and tight.
The battery
voltage is lower
than 8V.
The wire connection is correct; the
controller is not working.
Please check the voltage of the battery
(at least 8V voltage to activate the
controller).
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