MPPT PRO-X 10A | 20A | 30A | 40A
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6.2.
Troubleshooting
Possible
reasons
Faults
Troubleshooting
PV array
disconnection
Charging LED indicator off during
daytime when sunshine falls on PV
modules properly
Confirm that PV wire connections are
correct and tight
Battery voltage is
lower than 8V
The wire connection is correct, and the
controller is not working.
Please check the battery voltage. At
least 8V to activate the controller.
Battery over
voltage
Charging indicator
Green fast flashing
Check if the battery voltage is higher
than OVD (over voltage disconnect
voltage) and disconnect the PV.
Battery over-
discharged
Charging indicator Red on solid
When the battery voltage is restored to
or above LVR (low voltage reconnect
voltage), the load will recover
Battery
Overheating
Battery indicator
Red slow flashing
The controller will automatically turn
the system off. When the temperature
declines to be below 55 ºC, the
controller will resume.
Controller
Overheating
PV/BATT indicator fast flashing
When the heat sink of the controller
exceeds 85
℃
, the controller will
automatically cut off the input and
output circuit. When the temperature
is below 75
℃
, the controller will
resume work.
System voltage
error
①
Check whether the battery voltage
matches the system voltage level set
on the controller.
②
Change a matched battery or
modify the system voltage level.
Load Short Circuit
1. The load has no output.
2. LCD blinks “E001.”
3. Load and fault icons blink.
/
①
Check carefully load connection
and cancel the fault.
②
Restart the controller.
③
Wait for one night-day cycle
(nighttime>3 hours).
Load Overload
①
1. The load has no output.
2. LCD blinks “E002.”
3. Load and fault icons blink.
/
①
Please reduce the number of
electric equipment.
②
Restart the controller.
③
Wait for one night-day cycle
(nighttime>3 hours).
①
When the actual load current exceeds the rated value, the load is cut off after a delay.
Times of the actual load
current Vs. the rated value
1.02-1.05
1.05-1.25
1.25-1.35
1.35-1.5
Delay time to cut off the load
50s
30s
10s
2s
Battery level shows full,
battery frame and fault
icon blink.
Battery level shows empty,
battery frame and fault icon
blink.
Battery frame and fault
icon blink.