pro user PSI Series Operating Manual page 18

Symptom
The inverter beeps five
times, the red fault
indicator LED Illuminates
and there is no AC output.
The inverter beeps
eleven times, the red
fault indicator LED
illuminates and the
inverter shuts down.
The inverter is beeping
Continuously, the red
fault indicator LED
Illuminates and there is no
AC output.
TROUBLESHOOTING
Possible Cause
The inverter is
overheating. When the
internal temperature
exceeds 75°C the AC
output will shut down.
The inverter has detected
a short circuit at the AC
output.
The inverter has shut
down due to overload.
Connected load has
exceeded the surge
rating of the inverter.
18
Solutions
Reset the inverter by
•
turning it o and on again
and check to see if the
cooling fans are working
(fans automatically turn
on when the inverter is at
20% load or internal
temperatures are at
45°C). If the cooling fans
are not functioning, the
inverter will need further
assessment, please
contact Pro-User
Electronics.
If the fans are
•
functioning, check that all
ventilation slots and fan
openings are not
obstructed. Also ensure
that cool air is being
circulated to the inverter
and make sure ambient
temperatures do not
exceed 45°C.
Please check that the
connected device is not
faulty and check if there
are no short circuits in the
AC circuit.
Disconnect the connected
•
load.
Reduce the connected
•
load.