1.5.5 Fault State
In the normal mode, the UPS will transfer the load to Bypass mode in case of inverter failure or UPS
over-temperature. In Battery mode (with no bypass mains), the UPS will shut down and stop the output if the
inverter failure or UPS overtemperature appears. In UPS Fault State, the alarm indicator (red) will be solid on, the
buzzer will keep beeping, and the corresponding fault information will be displayed on LCD.
1.5.6 Maintenance Bypass Mode
If maintenance and repair for UPS are needed, you can switch the load to the Maintenance Bypass through
maintenance bypass MCB, and the power to the load is not interrupted. The maintenance bypass MCB is located at
the back of the UPS cabinet, and the capacity meets the requirements of total load capacities.
When the UPS has malfunctions, and can not working normally, please get in touch with the nearest Vertiv branch
office or local service center. It is prohibited to repaire the UPS by yourself, otherwise the personnel injury and
damage to the equipment will occur.
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