American Power Conversion and S15BLK, S10, S10BLK, S15 B

B-1

This appendix describes possible causes and solutions for the following problems:

1. Unit will not turn on.

2. Connected equipment reboots or turns off during or after the unit switches to

battery power.

3. “Replace Battery” LED is illuminated.

Note:The VFD screen will display any faults or warning conditions that occur

along with a message explaining what action to take. If ever in doubt as to

what action to take, please contact APC Technical Support (Internet—

www.apc.com/support, Phone — 888-88-APCAV).

Possible Cause:

Battery is not connected

Solution:

Remove front display panel by grasping the sides and pulling straight

back. Battery is located on the right side of the unit. The black battery connector

should be pushed snugly into the battery socket located just to the left of the battery

pack. See “

Connect Battery

” to view photographs of this procedure.

Possible Cause:

Input power cord is not connected properly.

Solution:

Ensure supplied power cord is connected ﬁrmly on both ends.

Possible Cause:

No power or insufﬁcient power available at the wall outlet.

Solution:

Ensure the wall outlet has good power by using a voltmeter or by plugging

in another device.

Note:The unit will not turn on and accept incoming utility power if the power is

out of range. The unit can still be “cold-started” using battery power, by

pressing and holding the power switch until the unit beeps.