Vesta Pro 600 VAC User Manual page 9

b. When in AVR mode, it will display as below. And the mark
will flicker every 1second.
c. When in battery mode, it will display as below. And the mark
will flicker every 1second.
Note: If I/P-V<20V，input voltage will display "000"
d. When in off charging mode, it will display as below.
Note: the output voltage always is displayed as "000" in off
charging mode.
e. When in fault mode, it will display as below. "FAULT"
character and the reason of fault only.