•
Load Short Circuit
Load will be switched off when load short circuit (
≥
4 times rated current) happens. Controller will automatically
attempt to reconnect load for 5 times. If short circuit protection still exist after controller's 5 times attempts, user
have to clear short circuit, then press the SET button or disconnect and restart the controller or wait for one night-
day cycle (night time>3 hours).
•
Damaged Remote Temperature Sensor
If the temperature sensor is short-circuited or damaged, the controller will be charging or discharging at the
default temperature 25
º
C to prevent the battery damaged from overcharging or over discharged.
•
Controller Overheating
If the temperature of the controller heat sinks exceeds 85ºC, the controller will automatically start the overheating
protection and recover below 75ºC.
•
High Voltage Transients
PV is protected against small high voltage surge. In lightning prone areas, additional external suppression is
recommended.
6.
Troubleshooting
Faults
Possible reasons
Troubleshooting
The LCD is off during
daytime when
sunshine falls
on PV modules properly
PV array disconnection
Confirm that PV wire connections are correct and tight
Wire connection is correct,
LED not display
1. Battery voltage is lower
than 9V
2. PV voltage is less than
battery voltage
1. Please check the voltage of battery. At least 9V voltage
to activate the controller
2. Check the PV input voltage which should be higher than
battery's
Interface blink
Battery over voltage
Check if the battery voltage is higher than OVD point
(over voltage disconnect voltage), and disconnect the PV.
Interface blink
Battery over discharged
When the battery voltage is restored to or above LVR point
(low voltage reconnect voltage), the load will recover
Interface blink
Battery overheating
The controller will automatically turn the system off. But
while the temperature decline to be below 50 ºC, the
controller will resume.
Interface blink
Over load or Short circuit
Please reduce the number of electric equipment or check
carefully loads connection.
