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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