Troubleshooting - Offgridtec MPPT PRO-X Series User Manual

6.2. Troubleshooting

Possible
Faults
reasons
Charging LED indicator off during
PV array
daytime when sunshine falls on PV
disconnection
modules properly
Battery voltage is The wire connection is correct, and the
lower than 8V controller is not working.
Charging indicator
Green fast flashing
Battery over
voltage
Charging indicator Red on solid
Battery over-
discharged
Battery indicator
Red slow flashing
Battery
Overheating
Controller
Overheating
PV/BATT indicator fast flashing
System voltage
error
1. The load has no output.
2. LCD blinks "E001."
3. Load and fault icons blink.
Load Short Circuit
1. The load has no output.
2. LCD blinks "E002."
3. Load and fault icons blink.
Load Overload
①
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
Delay time to cut off the load
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.
/
/
1.02-1.05
50s
— 28 —
MPPT PRO-X 10A | 20A | 30A | 40A
Troubleshooting
Confirm that PV wire connections are
correct and tight
Please check the battery voltage. At
least 8V to activate the controller.
Check if the battery voltage is higher
than OVD (over voltage disconnect
voltage) and disconnect the PV.
When the battery voltage is restored to
or above LVR (low voltage reconnect
voltage), the load will recover
The controller will automatically turn
the system off. When the temperature
declines to be below 55 ºC, the
controller will resume.
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
① Check whether the battery voltage
resume work.
matches the system voltage level set
② Change a matched battery or
on the controller.
① Check carefully load connection
modify the system voltage level.
② Restart the controller.
and cancel the fault.
③ Wait for one night-day cycle
(nighttime>3 hours).
① Please reduce the number of
② Restart the controller.
electric equipment.
③ Wait for one night-day cycle
(nighttime>3 hours).
1.05-1.25 1.25-1.35
30s 10s
1.35-1.5
2s