Outback Power Systems GS4048A Operators Manual - Manual (Page 57)

Troubleshooting
900-0161-01-00 Rev A 55
Error Messages
An error is caused by a critical fault. In most cases when this occurs, the unit will shut down. The
MATE3 system display will show an event and a specific error message. This screen is viewed using
the MATE3 Home screen’s soft keys. (See the MATE3 manual for more instructions.) One or more
messages will display
Y (yes). If a message says N (no), it is not the cause of the error.
NOTE: The Radian series has no external indicators and requires a system display to identify an error.
Some errors will reset automatically when the cause is resolved. These are noted.
It is possible to clear an error by resetting the inverter. The inverter must be turned off, and then on,
to reset it. Other possible steps are shown below. Each should be followed by resetting the inverter.
Table 7 Error Troubleshooting
Message Causes Possible Remedy
Low Output Voltage
Inverter’s AC regulation cannot be maintained
under high load conditions.
NOTE: The GS8048A can maintain only 4 kVA
on L1 when L2 has loads between 0 and 4 kVA
(at 25°C). The opposite is also true. The
GS4048A has similar limits at half this wattage.
Check loads and measure current draw.
Remove loads as necessary.
AC Output Shorted
Inverter exceeded its maximum surge current
due to severe overload.
Check the loads and wiring. This issue is
usually the result of a wiring problem (a short),
as opposed to a poorly-sized load.
AC Output Backfeed
Usually indicates another AC power source (out
of phase with the inverter) was connected to
the unit’s AC output.
Disconnect the AC OUT wires from the
inverter. Check the wires (not the inverter)
with an AC voltmeter. If an AC source is
present, shut it off.
Stacking Error Programming problem among stacked units.
(Often occurs if there is no master.)
Can also occur if
AC Output Backfeed occurs.
 Check stacking programming and designation
of master. (See page 35.)
 Check for output backfeed from an external
source. Disconnect output if necessary.
Low Battery V 7
DC voltage is below low battery cut-out set
point, usually due to battery discharge.
This error can be triggered by other causes. It
can appear along with Low Output Voltage, AC
Output Shorted, or AC Output Backfeed errors.
 If this error accompanies other errors, treat
those conditions as appropriate.
 If it occurs by itself: Recharge the batteries.
The error will clear automatically if an AC
source is connected and the charger turns on.
High Battery V 7
DC voltage exceeded acceptable level. See
page 21.
Check the charging source. This problem is
usually the result of external charging.
Over Temperature 7 Inverter has exceeded its maximum allowed
operating temperature. See page 57. Allow the inverter to remain off to reduce the
temperature, or add external cooling.
Comm Fault The inverter has suffered an internal
communication failure. Contact OutBack Technical Support. 8
Loose DC Neg
Terminals (L or R) Loose DC connection on left (L) or right (R)
internal power module. Tighten all DC connections between inverter
and battery. If this error is not resolved,
contact OutBack Technical Support. 8
AC Relay Fault AC transfer relay damaged. Contact OutBack Technical Support. 8
7 This error will clear automatically when the cause of the error is resolved. The inverter will begin functioning again when this occurs.
8 See inside front cover of this manual.