Troubleshooting
4–8975-0125-02-01
W9 Battery temp sensor
not detected. Check
connections.
Automatic Battery Temperature
Sensor Not Present Install a battery te m p er a tu r e
sensor (BTS). This warning
will continue to display as long
as no BTS is connected.
W10 Battery temp sensor
failure. Automatic Battery Temp er ature
Sensor Shorted Replace ba t te ry te mp er a ture
sensor.
W11 Batt voltage too hi gh.
Check DC wiring to
inverter/charger.
Automatic DC Over Voltage
Warn ing Turn off or check additional
charging sources to batteries.
Check battery cables.
W12 Battery voltage is
getting low.
Recharge battery.
Automatic DC Under Voltage
Warn ing Recharge batteries and check
battery cables from inverter to
batteries for loose connections.
W13 Line 1 AC voltage
too high. System may
shut down
Automatic AC Over Voltage
Warning (AC Line 1
input)
Check AC input voltage.
Check high AC input voltage
setting.
W14 Line 1 AC voltage
too low. System may
shut down.
Automatic AC Under Voltage
Warning (AC Line 1
input)
Check AC input voltage.
Check low AC input voltage
setting.
W15 Line 2 AC voltage
too high. System may
shut down.
Automatic AC Over Voltage
Warning (AC Line 2
input)
Not applicable to MS2000.
W16 Line 2 AC voltage
too low. System may
shut down.
Automatic AC Under Voltage
Warning (AC Line 2
input)
Not applicable to MS2000.
W18 Cannot Equalize Manual Cannot equalize Wrong battery type. Change
battery type only if the battery
type setting is not the same as
actual battery type. Cannot
equalize a gel or AGM battery.
W19 Equalization
terminated
abnormally
Manual Equalization
terminated abnormally Investigate cause of problem.
W500 Lost network
connection Automatic Lost network
connection Check network cables or
terminators.
W501 Inv/Chg is trying to
fix a memory
problem
Manual Non-volatile memory
warning Normal operation may return
or may go to fault. Push Reset
button if normal operation doe s
not resume.
Table 4-3Warning Messages