APC BU154A, UTS10BI, UTS6H Problem and Possible Cause, Solution, Backup2 Power Source is set

Problem and Possible Cause

Solution

Problem: While operating on backup power the UPS repeatedly experiences an overload condition causing the circuit breaker to trip

Cause: The UPS power rating is set too	Refer to System Setup: Backup2 Power Rating in this manual.
high causing an overload condition.
Cause: The UPS Surge Overload	Refer to System Setup: UPS Surge Overload Delay Time in this manual.
Delay Time is set too high.
Cause: The UPS is experiencing a low	• The UPS batteries recharge during normal UPS operation. Refer to the UPS
battery condition.	user manual or go to the APC Web site, www.apc.com. for battery recharge
	times.
	• The UPS batteries may need to be replaced. Refer to the UPS user manual
	or go to the APC Web site, www.apc.com for replacement battery
	information.

Problem: The UPS operates on battery power while the generator is running

Cause: The UPS is not receiving	Check that the UPS is securely connected to the Convenience Outlet on the
power.	UTS.
Cause: The Voltage Sensitivity for	• Refer to System Setup: Voltage Sensitivity in this manual. The sensitivity
Backup2 Power Source is set	setting should be Medium or Low.
incorrectly.
Problem: The LCD displays the message
		CKTX FAULT CONDITION
		NO OUTPUT
Cause: The circuit breaker may be	• Reset the circuit breaker.
tripped.	• Check the current rating for the circuit. Refer to Circuit Setup: Circuit
	Amp Rating in this manual. NOTE: Properly configuring the Amp
	rating requires the services of a qualified electrician.
Cause: The fuse for the circuit breaker	Replace the fuse, and reset the circuit breaker. NOTE: Replacing a fuse
may be blown.	requires the services of a qualified electrician.

Problem: The UPS does not supply power to Circuit1

Cause: The UPS is not connected to circuit1.

Circuit1 is intended for use with utility or generator power ONLY.

14 Operation Manual Universal Transfer Switch UTS6 UTS6H UTS6BI UTS10BI