"WARNING: Utility power failed, transfer to backup mode." "SEVERE:The UPS battery capacity is low than threshold, soon to be exhausted." "SEVERE: The UPS has sensed an overload condition." "WARNING:The UPS has been turned off." "WARNING:The UPS entered sleep mode. Output power will not be provided." "SEVERE:The UPS inner temperature is too high." "WARNING:The UPS has enabled buck, high utility voltage." "INFORMATION:The UPS has started a battery test process." "WARNING:The UPS hardware fault."