Liebert Series 300 manual Cooling

Table 8	Alarm Messages (continued)
Alarm		Meaning and
Message		Corrective Action in Brackets [ ]
UPS SYSTEM (continued)
External shutdown		The UPS has been shut down from an external contact.
		[Perform a UPS start-up procedure when the conditions causing the external
		shutdown have been corrected.]
COOLING
Fan failure		A failure has been detected in at least one of the internal cooling fans.
		[Contact Liebert Customer Service and Support.]
System shutdown impending due to		An overtemperature condition is present in the UPS cabinet. The UPS will
overtemperature		automatically shutdown if the overtemperature continues.
		[Determine the cause of the condition and correct it if possible. Check for
		clogged air filter, restricted air flow, or fan failure.]
System shutdown in 5 minutes due to		Overtemperature condition has persisted. Note the time stamp on the alarm
overtemp		message.
		[Perform an orderly shutdown of the critical load. Perform a UPS shutdown
		procedure or allow the UPS to perform an automatic shutdown. Contact Liebert
		Customer Service and Support.]

Operation 65