ACOPOWER Midas Y Series, User Manual, Page: 30 / 40

5.2 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
Wire connection is correct, the
controller is not working.
Please check the voltage of
battery. At least 8V voltage
to activate the controller.
Battery over voltage
Charging indicator
Green fast flashing
Battery level shows
full, battery frame
blink, fault icon blink.
Check if battery voltage is
higher than OVD(over
voltage disconnect voltage),
and disconnect the PV.
Battery over
discharged
Charging indicator Red on solid
Battery level shows
empty, battery frame
blink, fault icon blink.
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
Battery frame blink,
fault icon blink.
The controller will automati-
cally turn the system off.
When the temperature
declines to be below 55 ºC,
the controller will resume.
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Controller
Overheating PV/BATT indicator
fast flashing
When heat sink of controller
exceeds 85
℃
, the controller
will automatically cut off
input and output circuit.
When the temperature
below 75
℃
,the controller
will resume to work.