Instruction Manual

Doc. #: 0260011-J0 Rev B
80
Table K — Inverter Alarm Codes
Alarm Type Description Cause Solution
44 BACKFEED
ERROR
ACin is supplied by the
ACout of the module
Grid is not present and there
is a short circuit between
ACin and ACout
45 Vint TOO HIGH Same as error 10 but
recoverable
65 TSI COM BUS
FAIL
The inverter doesn't see
itself on the bus TSI
Communication problem Hardware problem. Replace
inverter
66 T2S COM BUS
FAIL
The inverter doesn't see
itself on the bus T2S
Communication problem Hardware problem. Replace
inverter
67 TSI COM BUS
FAIL
No synch top received on
TSI BUS
No Sync top from TSI inverter Hardware problem. Replace
inverter
68 T2S COM BUS
FAIL
No sync top received on
T2S BUS
No sync top from T2S
inverter
Hardware problem. Replace
inverter.
69 LOADSHARING
LOW
The inverter gives less
power than other inverters
in parallel
This alarm should disappear
by itself. If it remains
permanent, the module
probably has a problem.
70 LOADSHARING
HIGH
The inverter gives more
power than other inverter in
parallel
This alarm should disappear
by itself. If it remains
permanent, the module
probably has a problem.
71 VOUT
CHANGING
Output voltage is changing
its nominal value
Happens when there is a
cong change to the voltage-
lasts 1 min for a change from
100V to 120V
NEVER INSERT A NEW
MODULE WHILE THIS IS IN
PROGRESS!
N/A
72 OVERLOAD
CURRENT
The load current is greater
than the current available
from inverter
Load too high or some
inverters are failing.
Reduce load or add inverter to
the system.
73 COM BUS
MISMATCH
The modules seen on bus
A are different that modules
see on bus B
Alarm- triggered when it sees
more or less modules on bus
A vs bus B - used to identify
a module problem while the
module is still running
Hardware problem. Replace
inverter
74 IMMINENT
START
Reported from a stopped
module 10 seconds before it
is going to start
Start up procedure N/A
75 BOOSTER NOT
READY
The boost function is not
allowed at this time
Less than 60 second, after
previous boost action
Wait 1 minute to recover from
the situation
76 OVERLOAD
NOT READY
The overload function is not
allowed at this time
Less than 55 second, after
previous overload status
Wait 1 minute to recover from
the situation
77 TEMP
DERATING
Temperature measured
from the heat sink - 88C
for AIM2500 and 70C for
AIM2500
Heat sink temperature over
rating
Check temperature inside
inverter. Check room
temperature. Replace FAN.
Replace inverter
78 OVERLOAD
POWER
The load power is greater
than the power available
from inverter
Requested power greater
than available power
Reduce load or add inverter
on the system.
79 EEPROM
DEFECT
The EEPROM has a
problem
Replace Inverter