56 1600XPi Series UPS Installation and Operation Manual – 60616-014
Cause
Fan failure;
High internal ambient
temperature
Chopper malfunction Inverter/chopper fault
Operation Mode After
Fault
Shutdown – No output
Bypass operation – Chopper and inverter are stopped
Inverter OL – Transfer to bypass
Audible Alarm Yes – Continuous buzzer
Visible Alarm Red Fault LED on
Relay Contact Alarm
Fault relay closed
Bypass relay closed
Auto-retransfer No
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