SMARTZONE UPS USER MANUAL
87
Fault
Code
Fault Description
Fault
Type
Buzzer
LED
Action to Take
below 40°C
72
Ambient Low
Temperature Alarm
Warning
Periodic
Yellow
Alert On
Ensure that the ambient
operating temperature is at or
above 0°C
74
Bypass Relay Won’t
Open
Critical Continuous
Red Alert
On
Reboot the UPS unit
75
Bypass Relay Won’t
Close
Critical Continuous
Red Alert
On
Reboot the UPS unit
76
Back feed Relay Won’t
Open
Critical Continuous
Red Alert
On
Reboot the UPS unit
77
Back feed Relay Won’t
Close
Critical Continuous
Red Alert
On
Reboot the UPS unit
78
Power Supply Error
Critical Continuous
Red Alert
On
Reboot the UPS unit
79
EEPROM Error
Critical Continuous
Red Alert
On
Reboot the UPS unit
80
RAM Error
Critical Continuous
Red Alert
On
Reboot the UPS unit
82
Internal
Communications Error Critical Continuous
Red Alert
On
Reboot the UPS unit
83
CPLD Error
Critical Continuous
Red Alert
On
Reboot the UPS unit
84
MCU Reset
Critical Continuous
Red Alert
On
Reboot the UPS unit
85
Back feed Relay Won’t
Operate
Critical Continuous
Red Alert
On
Reboot the UPS unit
91
Parallel Overload
Alarm
Warning
Periodic
Yellow
Alert On
Reboot the UPS unit
93
Button Error
Warning
Periodic
Yellow
Alert On
Reboot the UPS unit
95
EPO Activated
Warning
Periodic
Yellow
Alert On
Ensure that the EPO port on the
back of the UPS is shorted
together
Ensure the remote EPO dry
contact is not activated