Troubleshooting
ON Series m UPS User Instruction Manual
17
If you have questions or problems regarding you ON Series m UPS, refer to the
troubleshooting table below.
Table 4. Troubleshooting
Problem
Possible Cause
Solution
UPS will not turn ON
Front Panel Switch not
“ON”.
Switch the Power Switch to (I)
UPS’s input circuit
breaker tripped.
Reduce the load on the UPS by
unplugging the load and press
the circuit breaker in on the rear
panel.
Unit not plugged in.
Plug unit into wall outlet.
UPS operates on battery
even with line voltage
present.
UPS’s input circuit
breaker tripped.
Reduce the load on the UPS by
unplugging the load and press
the circuit breaker in on the rear
panel.
High or low line.
Contact qualified electrician.
Out of frequency range.
Check for UPS compatibility
with power source.
Fault LED is ON.
If yellow LED is blinking,
the battery needs to be
replaced.
Allow batteries to charge for 4
hours. If the problem continues,
replace the battery(ies).
If yellow LED is off or on
solid, there is an internal
UPS fault.
Do not attempt to use the UPS.
Turn the UPS off, unplug from
the power line and call
Technical Service:
(800)-327-8801, opt. 3
immediately.
Fault LED is blinking
If yellow LED is blinking,
there is no battery
connected or detected.
Connect install or replace the
battery(ies).
If green LED is blinking
or off, the output is
overloaded.
Reduce the load on the UPS
until the LED goes out. If green
LED is off, recycle power switch
to reset.
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