2
7
Fault and Bypass
indicator LEDs and
diagnostic LED A
are illuminated.
UPS internal fan has a
problem or UPS
shutdown due to
temperature condition.
Load is on bypass power.
Ensure UPS is not overloaded,
ventilation openings not blocked,
or room ambient temperature is
not excessive. Wait 30 minutes
to allow UPS to cool, then restart
UPS. IF UPS does not restart,
contact your local distributor,
Sola/Hevi-Duty representative or
Sola/Hevi-Duty Technical
Support Group.
Fault and Bypass
indicator LEDs and
diagnostic LED B
are illuminated.
UPS internal DC bus
overvoltage.
UPS requires service.
Contact your local distributor,
Sola/Hevi-Duty representative or
Sola/Hevi-Duty Technical
Support Group.
Fault and Bypass
indicator LEDs and
diagnostic LED C
are illuminated.
UPS control power
supply fault.
UPS requires service.
Contact your local distributor,
Sola/Hevi-Duty representative or
Sola/Hevi-Duty Technical
Support Group.
Fault and Bypass
indicator LEDs and
diagnostic LED D
are illuminated.
UPS PFC (Power Factor
Correction Circuit) fault.
UPS requires service.
Contact your local distributor,
Sola/Hevi-Duty representative or
Sola/Hevi-Duty Technical
Support Group.
Fault and Bypass
indicator LEDs and
diagnostic LED E
are illuminated.
UPS inverter fault.
UPS requires service.
Contact your local distributor,
Sola/Hevi-Duty representative or
Sola/Hevi-Duty Technical
Support Group.
Fault and Bypass
indicator LEDs and
diagnostic LED A
and C are
illuminated.
UPS failed the battery
test.
Replace batteries.
Contact your local distributor,
Sola/Hevi-Duty representative or
Sola/Hevi-Duty Technical
Support Group.
Fault and Bypass
indicator LEDs and
diagnostic LED C
and E are
illuminated.
UPS shutdown due to a
command from the
communications port(s).
Your UPS has received a signal
or command from the attached
computer. If this was
inadvertent, ensure the
communication cable used is
correct for your system. For
assistance, contact your
Sola/Hevi-Duty representative or
Sola/Hevi-Duty Technical
Support Group.
Troubleshooting Guide (Continued)
Problem
Cause
Solution
Summary of Contents for S4K2U Series
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