Conext SW4048 4,000W 48V Installation

Troubleshooting the Conext SW via the SCP
975-0638-01-03 5–7
Table 5-3 provides a detailed description of the fault detection messages and
solutions. If you are unable to resolve the problem after referring to this table,
contact customer service.
Table 5-3 Fault Detection Messages
Code Message Type Cause Solution
F1
AC Output under
voltage
Escalating Auto
fault detection.
Must occur 3 times
in 30 seconds
before becoming a
manual fault
detection.
Inverter voltage is
under 210 volts.
Remove excessive load.
F2
AC Output over
voltage
Escalating Auto
fault detection.
Must occur 3 times
in 30 seconds
before becoming a
manual fault
detection.
Inverter voltage is
over 270 volts.
Check if there is an external
power source that is running
parallel to the inverter’s
output.
F17
Relay(s) Welded Manual The L1 transfer
relay is bad or an
AC source was
wired directly to
the AC output.
Disconnect the inverter’s AC
output wiring. If error
continues, have unit
serviced.
F18
Relay(s) Welded Manual The L2 transfer
relay is bad or an
AC source was
wired directly to
the AC output.
Disconnect the inverter’s AC
output wiring. If error
continues, have unit
serviced.
F44
Battery Over
Temperature
Automatic Battery
temperature is
over 140 °F
(60 °C).
Poor battery
compartment
ventilation.
Stop charging if necessary.
Check cable connections.
Check battery voltage/current
and temperature. If battery is
not accepting charge, it may
need to be replaced.
Check for excessive ambient
temperature and adequate
ventilation in the battery
compartment.
Automatic BTS may be
damaged.
If the unit displays a
temperature of over 212 °F
(100 °C), the BTS will need to
be replaced.