Non-Fatal Fault Mode | Toshiba 1500 Plus manual

TOSHIBA

7.0Troubleshooting Procedures

Faults are those abnormal conditions that can occur and cause the unit to shutdown normal operation. The faults are detected by the protection circuitry (see System Protection Features Section 5.2) in the unit. The UPS “Fault” lamp will light red. "Troubleshooting" involves monitoring the bar graph lamps on the front panel and then interpreting the readout by using the fault mode display charts.

7.1Non-Fatal Fault Mode

Non-fatal faults may or may not cause the unit to shut down. These faults normally will cause the UPS to transfer to bypass mode. Use "System Restart" procedures (see Section 5.10) to transfer the UPS back to “On Line” mode. Use the following chart to decode the display. All non-fatal faults will cause the red “Fault” LED to flash.

Non-Fatal Fault Mode Display Chart

Fault	Display status	Probable cause	Corrective action
			Remove cause of
Output low		Inverter fault or short	short circuit. If none is
voltage		circuit in UPS output	found, contact your
			Toshiba service
			representative.
Output		Resonance with load	Remove load
overvoltage		equipment	equipment one piece
			at a time.
DC		Chopper fault	Contact your Toshiba
undervoltage			service representative.
			Check for airflow
Cooling fin		Cooling fan outage or	restriction. If none is
overheating		closed cooling airflow	found, contact your
		path	Toshiba service
			representative.
		Battery damaged or
Battery		something wrong in the	Contact your Toshiba
problem		battery circuit (battery may	service representative.
		not be connected)
Output		Capacity of load	Review UPS rating
overload		equipment to high	or reduce load
			equipment.

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1500 Plus specifications

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