Alpha OutBack Power Radian Series Operator's Manual page 46

Troubleshooting
Symptom Possible Cause
One or more units Unit is slave and is in Silent
have no output but mode.
others do (in multi-
inverter system).
No AC input.
The L1 output is wired to its
L2 input, or the other way
around. The problem is
accompanied by shifts in
frequency.
AC source does not meet
requirements.
AC source meets
requirements but is "noisy" or
irregular.
Inverter was manually set to
disconnect from AC.
Will not connect to
the AC source.
Grid use function has
disconnected from AC.
High Battery Transfer
(HBX) mode has
disconnected from AC.
Mini Grid input mode has
disconnected from AC.
Conflicting programming.
Grid Tied mode has
disconnected from AC.
Conflicting AC sources.
Priority input is interfering with
secondary input.
No AC input.
Charger set to Off.
Will not charge.
GridZero mode in use.
46
Table 5 Troubleshooting
Possible Remedy
System display only: Check Power Save Levels in the
Inverter Stacking menu and test with loads. Determine if the
inverter comes on at the appropriate levels. (If this setting
was intentional, then no action is required.)
Check the AC voltage on the inverter's input test points. (See
page 45.) If not present, the problem is external. If present,
the inverter could be damaged.
Disconnect the wires from the inverter's AC input terminals or
AC output terminals, or both. If the problem immediately
disappears, it is an external wiring issue. The inverter's input
and output terminals must remain isolated from each other.
System display only: Check the Last AC Disconnect screen
(using the AC INPUT hot key and the Discon selection) for
the reason for disconnection. If it never originally connected,
check the Warning menu (using the <Inverter> soft key
from the Home screen). Confirm source voltage / frequency.
System display only: The Generator input mode can accept
irregular AC power. Select that mode for that input.
System display only: Change the AC Input Control setting
from Drop to Use with the AC INPUT hot key. (If this setting
was intentional, then no action is required.)
System display only: If activated prematurely, check the Grid
Use Time settings and the system display clock. (If this
setting was intentional, then no action is required.)
System display only: Check the AC INPUT hot key screen to
see if HBX mode is in use. If activated prematurely, check
the settings of HBX mode. (If this setting was intentional,
then no action is required.)
System display only: Check the Inverter part of the Settings
menu to see if Mini Grid mode is in use. If activated
prematurely, check the settings of Mini Grid mode. (If this
setting was intentional, then no action is required.)
System display only: Check to see if more than one of these
is enabled: Mini Grid, HBX, Grid Use Time, Load Grid
Transfer. Due to conflicting priorities, only one can be used.
AC source does not meet requirements; see related entry
under "Will not sell power to the utility grid" (next page).
If AC is present on the priority input, the inverter will not
connect to AC on the second input. This is true even if the
first input is not connected for other reasons (programming,
low power quality).
See "Will not connect to AC" category.
System display only: Check the Charger Mode screen with
the CHARGER hot key and set to On or Auto. (If this setting
was intentional, then no action is required.)
System display only: The charger is inoperative in GridZero.
(If this setting was intentional, then no action is required.)
900-0161-01-01 Rev B