Installation
and
Operation
Manual
(Rev
A)
PVI
50
‐
100KW
Series
Inverters
DOCR
‐
070233
Page
73
of
92
7
Troubleshooting
and
Maintenance
This
section
provides
guidelines
for
troubleshooting
and
routine
maintenance
of
your
inverter.
WARNING:
These
troubleshooting
and
maintenance
instructions
are
for
use
by
qualified
personnel
only.
To
reduce
the
risk
of
electric
shock,
you
should
never
attempt
to
open
the
inverter,
DC,
or
AC
enclosure
doors,
or
perform
any
service
or
troubleshooting
without
prior
training.
Before
attempting
to
service
or
troubleshoot
the
inverter,
please
read
the
entire
manual.
7.1
Inverter
Messages
Although
the
inverter
is
designed
for
many
years
of
uninterrupted
power
production,
there
may
be
instances
where
messages
are
displayed
on
the
LCD
screen.
For
ease
of
diagnostics
most
messages
are
displayed
as
an
error
message.
Examples
of
Error
Messages,
Descriptions,
and
Corrective
Actions
are
found
in
this
section.
Pac:
XXXX
W
Power
Derating
Pac:
XXXX
W
AC
Voltage
High
Pac:
XXXX
W
AC
Voltage
Low
Pac:
XXXX
W
AC
Freq
High
Pac:
XXXX
W
AC
Freq
Low
Contactor
Fail
978
‐
683
‐
9700
CT
Failure
978
‐
683
‐
9700
Thermal
disc.
978
‐
683
‐
9700
The
inverter
is
in
derating
mode.
Can
be
caused
by
high
input
power,
high
temperature,
AC
line
impedance.
Check
string
sizing,
ambient
temp,
fans
operating,
vents
are
clear,
AC
wire
sizing
The
AC
grid
voltage
is
exceeding
the
high
limit.
Measure
the
actual
VAC
compared to
the
LCD
display
VAC.
If
VAC
is
greater
than
acceptable
limits,
the
inverter
will
restart
when
VAC
returns
to
normal
range.
The
AC
grid
voltage
is
less
than
the
low
limit.
Measure
the
actual
VAC
compared
to
the
LCD
display
VAC.
If
VAC
is
less
than
acceptable
limits,
the
inverter
will
restart
when
VAC
returns
to
normal
range.
The
AC
grid
frequency
is
exceeding
the
high
limit.
If
possible
measure
the
frequency
or
contact
local
utility
provider.
If
AC
frequency
is
above
acceptable
limits,
the
inverter
will
restart
when
frequency
returns
to
normal
range.
The
AC
grid
voltage
is
less
than
the
low
limit.
If
possible
measure
the
frequency
or
contact
local
utility
provider.
If
AC
frequency
is
below
acceptable
limits,
the
inverter
will
restart
when
frequency
returns
to
normal
range.
The
AC
contactor
or
sensing
circuit
has
failed
Turn
off
the
inverter
and
contact
Solectria
Renewables.
The
inverter
may
need
to
be
serviced
by
an
authorized
service
provider.
The
internal
current
monitoring
has
failed
Turn
the
DC
and
AC
off,
restart
the
inverter.
The
inverter
may
need
to
be
inspected
and
serviced
by
an
authorized
service
provider.
The
AC
contactor
is
open
when
it
is
being
commanded
to
be
closed
Turn
off
the
inverter
and
contact
Solectria
Renewables.
The
inverter
may
need
to
be
serviced
by
an
authorized
service
provider.