SECTION III
Operation
Page 3.19
BP+2.9X
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Table 3.2 (continued)
Screen Message
Description
Corrective Action
maint by fIt
Maintenance bypass fault
Maintenance bypass breaker is closed
with inverter operating. Follow Startup
procedure to open bypass breaker.
dc hi shtdn’
Rectifier shutdown due to dc
output overvoltage
Verify that rectifier automatically
restarts
mv mnl strt*
Inverter manual start
No action required
mv mnl stop*
Inverter manual stop
No action required
mv mnl xfer*
Inverter manual transfer
No action required
inverter on*
Inverter on
No action required
inverter off
Inverter off
Follow Startup procedure to restart
UPS.
mv fan fail
Inverter fan failure
Verify all cooling fans are operating.
mv fan norm*
Inverter fan normal
No action required
dc low shtdn
UPS shutdown - DC (battery)
voltage low
Batteries are discharged.
mv phrt nml*
Inverter phase rotation normal
No action required
out volt hi
Output voltage high
Verify UPS output voltage. Decrease if
necessary.
out volt low
Output voltage low
Verify UPS output voltage. Increase if
necessary.
out volt nml*
Output voltage normal
No action required
out frq high
Output frequency high
Verify UPS output frequency.
out frq low
Output frequency low
Verify UPS output frequency.
out frq normal*
Output frequency normal
No action required
*
Not an alarm condition.
