Outback FX-R Series Operator Manual

Troubleshooting
50 900-0167-01-01 Rev A
Table 6 Troubleshooting
Symptom Possible Cause Possible Remedy
Unusual voltage
on hot or neutral
output line.
System neutral and ground
may not be bonded.
Test
AC
H
OT
O
UT
and
AC
N
EUTRAL
O
UT
terminals with AC
voltmeter. (See page 47.) These measurements should give
full voltage. Test neutral and ground connections. This
measurement should read zero volts. Any other result means
neutral and ground are not bonded correctly. If this is the
case, the hot line often reads 60 to 75 Vdc and the neutral
reads 45 to 60 Vdc with respect to ground. (If bonding is not
required or is prohibited by national or local codes, then no
action may be required.)
Unusual and
different voltages
on AC hot input
lines.
Inverter has not synchronized
with input source.
System display only:
The
AC In
reading accessed by the
<Inverter>
soft key may be erratic or inaccurate after initial
connection until the inverter has synchronized with the AC
source. This may require a short time.
Loads drop out or
crash during
transfer.
Erratic AC source voltage.
Check AC voltage on the
AC
H
OT
I
N
and
AC
N
EUTRAL
I
N
terminals. (See page 47.) If not consistent, the problem is
external.
System display only:
AC source voltage may have dipped to a
low enough point to crash a sensitive load before the inverter
could take over. This can happen if the inverter’s
Grid AC
Input Voltage Limits
or
Gen AC Input Voltage Limits
were
turned down to accommodate a problematic AC source. To
make the inverter respond sooner, raise the lower limit setting
in the appropriate menu. (If this setting was intentional, then no
action is required.)
Inverter set to
Search
(Search mode).
The unit will take a moment to come out of Search after
transfer.
System display only:
If constant power is required, set to
ON
with the
INVERTER
hot key. (If this setting was intentional,
then no action is required.)
Loads sensitive to inverter’s
transfer time.
UPS
mode not
in use.
System display only:
Most of the input modes feature a small
but noticeable response time during transfer. Certain loads
(such as highly sensitive computers) may not respond well. The
UP
S
mode has a faster response time. (See page 18.)
Loads too large. The unit can transfer more power than it can invert. If loads
are oversized, the unit will falter or crash when switching to
batteries. Reduce the size of the loads.
Undersized battery cables. Battery cables smaller than recommended will cause a
significant voltage drop when switching to batteries, acting
like either an overload or a low-battery condition. Size all
cables correctly.
Unit reads AC input,
even though no
source is present.
Internal transfer relay may be
damaged. May be
accompanied by
AC Relay
Fault
error and shutdown.
Disconnect AC input wires and turn inverter on. Test the
AC
H
OT
O
UT
and
AC
N
EUTRAL
O
UT
terminals with an AC
voltmeter. (See page 47.) If voltage appears there, the
transfer relay may be jammed.
False reading due to noise. Electrical noise can cause false readings on the metering
circuits when no voltage is present. The readings are usually
less than 30 Vac. If this is the case, no action is required.