Toshiba 1400XL Plus Series - Fatal Fault Mode Diagnosis

TOSHIBA
7 - 2
7.0 Troubleshooting Procedures
7.2 Fatal Fault Mode
Fatal faults may or may not cause the UPS to shutdown. Use "Restart After Fatal Fault"
procedures (see Section 6.5.2). Use the following chart to decode the display.
= Flashing LED
Corrective actionProbable causeDisplay statusFault
DC
overcurrent
Inverter fault
Fatal Fault Mode Display Chart
Red and Green LED's
flash alternately
Output
overcurrent
Inverter fault or short
circuit in UPS output
Contact your Toshiba
service representative.
Red and Green LED's
flash alternately
DC
overvoltage
Chopper fault
Red and Green LED's
flash alternately
UPS
overload
Capacity of load
equipment too high
Review UPS rating
or reduce load
equipment.
Red and Green LED's
flash alternately
Red and Green LED's
flash alternately
UPS system
error
Trouble with the control
PWB
Contact your Toshiba
service representative.
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