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Troubleshooting
F24
Inverter/Charger internal
failure. Service required.
Escalating Auto Fault.
Must occur 3 times in 60
seconds before becoming a
manual fault.
AC Under Voltage
Shutdown (Inverter AC
output)
Service required.
F29
AC Backfeed fault: Service
immediately.
Manual
AC Backfeed Shutdown
Service required.
F30
Unit is too cold and has
shut down. See guide.
Manual
Battery Under Temperature
Fault
Clear the fault and attempt one restart. Try
restart again when ambient temperature is
warmer or gently warm the battery.
F40
Internal fault. If fault
persists, call Customer
Support.
Manual
No IPC communication
Service required.
F41
Internal fault. Reset. If fault
persists, call Customer
Support.
Manual
Dead battery charger
timeout
Try restarting dead battery charging once.
Then check the condition of the battery
and replace if necessary.
F502
Watchdog reset error
Manual
Watchdog reset error
Service required.
F505
Controller fault
Manual
Controller fault
Service required.
F506
Wrong fault identifier
Manual
Wrong fault identifier
Service required.
F507
Wrong identifier
Manual
Wrong identifier
Service required.
Table 9
Fault Messages
Fault
Number
Message
Fault Type
Cause
Solution