Table 4-6 Fault Messages
Fault
Number Message
F1
AC Output Under
Voltage
F2
AC Output Over
Voltage
F17
Relay(s) Welded
F18
Relay(s) Welded
F19
Relay(s) Welded
F20
Relay(s) Welded
F21
Relay(s) Welded
F22
Relay(s) Welded
975-0240-01-01
Fault Type
Cause
Escalating
AC under voltage
Auto Fault.
shutdown at 108 V. The
Must occur
inverter has shut down to
3 times in
protect the loads.
2 minutes
before
becoming a
manual fault.
Escalating
AC over voltage
Auto Fault.
shutdown at 135 V. The
Must occur
inverter has shut down to
3 times in
protect the loads.
30 seconds
before
becoming a
manual fault.
Manual
The AC1 L1 transfer relay
is bad or an AC source
was wired directly to the
AC output.
Manual
The AC1 L2 transfer relay
is bad or an AC source
was wired directly to the
AC output.
Manual
The AC2 L1 transfer relay
is bad or an AC source
was wired directly to the
AC output.
Manual
The AC2 L2 transfer relay
is bad or an AC source
was wired directly to the
AC output.
Manual
An unidentified transfer
relay is bad or an AC
source was wired directly
to the AC output.
Manual
An unidentified L1
transfer relay is bad or an
AC source was wired
directly to the AC output.
Faults and Warnings
Solution
Clear the fault and attempt
restart. If problem persists,
call customer service.
Clear the fault and attempt
restart. If problem persists,
call customer service.
Disconnect the inverter's
output wiring. If error
continues, have unit serviced.
Disconnect the inverter's
output wiring. If error
continues, have unit serviced.
Disconnect the inverter's
output wiring. If error
continues, have unit serviced.
Disconnect the inverter's
output wiring. If error
continues, have unit serviced.
Disconnect the inverter's
output wiring. If error
continues, have unit serviced.
Disconnect the inverter's
output wiring. If error
continues, have unit serviced.
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