User Manual

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 Bypass power source has failed. Power input from the bypass source is out of regular range or is experiencing
a black out. UPS will shut down, Bypass mode will not be activated.
 Insufficient inverter capacity. There was not enough capacity in the inverter for the UPS to switch from bypass
mode to line mode.
 Not enough power redundancy modules. The internal modules used for redundancy in this UPS have either
exceeded their capacity or have failed. The fault-tolerance of this UPS has been reduced or eliminated.
Power redundancy provides additional protection against failures of UPS modules. If one module has a fault, the
other module will take over. This event will occur when the load consumption are exceeded to use extra power
that belong to redundant power, some UPS modules are faulty or manual shutdown.
 UPS input abnormality. UPS is working abnormally due to one or more power conditions below:
 No neutral input. There is no neutral wire connected.
 Site wiring fault. The wiring is reversed or not grounded.
 UPS fatal internal abnormality. The UPS is experiencing one or more of the following fatal abnormalities; UPS
may shut down or stop output power unexpectedly.
 Output overload. Power consumption exceeds the power rating of UPS. If the overload is sustained, the
UPS will shut off.
 Bypass overload. Output is overloaded in bypass mode.
 Module overload. One of the UPS modules has overloaded. If the UPS module overload is sustained, the
UPS module will be shut down for protection.
 Output short circuit. Output has short circuited, the UPS will stop supplying power.
 Module rectifier overheating. The internal temperature of one rectifier module has exceeded the normal
rating.
 Module inverter overheating. The internal temperature of one inverter module has exceeded the normal
rating.
 Module inverter protected. A module inverter has been stopped for protection. The module inverter may be
faulty or abnormal.
 Reversed battery connection. The connection between UPS and battery has a reversed connection.
 Bypass phase sequence error. The sequence of phases is different between utility and bypass.
 Communication lost. Communication between the UPS and computer has been lost:
 Local communication lost. Communication between the UPS and computer via USB or serial cable cannot
be established or was lost.
 Network communication Lost. Software cannot establish communication with UPS or PDU on the network
or established network communication has been interrupted.
 UPS is faulty. UPS has an internal malfunction. The UPS may not be operating properly and will not be able to
affect a proper shutdown. Causes include:
 Bypass Fan fault.
 Bypass Fault.
 Module Rectifier Fault. A rectifier module is faulty; this module will stop supplying output power.
 Module Inverter Fault. An inverter module is faulty; this module will stop supplying output power.
 Module Fan Fault. A fan module has malfunctioned.