Tripp Lite SMART1524ET Owner's Manual page 48

Troubleshooting
Problem
No output
Output LED is off
UPS does not transfer to
battery mode during a
power failure or backup
time is shorter than
expected
Alarm LED is lit
Batteries will not charge Battery circuit is open
LCD text is not readable UPS fault
Password access is not
available
Possible Cause
AC input and output circuit
breakers are off
No line power input
Red LED illuminates solid
on front panel, indicating
fault
Line power or battery
power is not available
UPS fault
Battery is not connected
Battery circuit breaker is off Turn on battery breaker
Battery is not fully charged Recharge the battery and
Dead battery
UPS fault
Abnormal conditions are
detected
Wrong or bad temperature
probe connected
Password is lost or
forgotten
48
Solution
Turn on input and output
circuit breakers
Turn on AC input breaker
Read fault event under Event
Log in LCD display. Manually
restart UPS. Contact Tripp Lite
if fault persists.
Apply qualified input power
and make sure battery and
input breakers are turned on
Contact Tripp Lite for repair
information
Connect batteries
(48V or 24V DC nominal)
then test discharge time
Replace with new batteries
Return to repair center
Solve the problem according
to alarm information
1. Check if the battery cable
is connected firmly and make
sure battery connection
is correct. If there is any
connection error, loosening or
opening the connection will
cause the circuit to open.
2. Check if proper battery
voltage is detected on the
UPS battery connector.
3. Check if the battery
breaker is closed.
4. If the battery is bad,
replace it.
Only use a factory-supplied
temperature probe reading
approximately 15,000 Ohms
@ 25°C (77°F)
Return to repair center
Contact Tripp Lite for resetting
the new password