INV2500-HS SERIES
MANUAL
18.0 TROUBLESHOOTING GUIDE
18.1
If you encounter difficulty in getting the inverter(s) to operate, go through the following
troubleshooting guide.
18.2 Table 18-1. Inverter Troubleshooting Guide
SYMPTOM
POSSIBLE CAUSES
ACTION TO TAKE
Input OK LED does not
come on.
Bad connection to input battery;
input breaker not on.
Check the connection to battery;
check battery voltage; check that
input breaker is on.
Sync OK LED does not
come on.
Bad connection to sync termi-
nals.
Check that sync connection has
been made to all paralleled inverters
with proper polarity.
No AC output; Output OK
LED does not come on.
Bad output connection; output
breaker not on.
Check output connection to load;
check that output breaker is on;
check that AC distribution breakers
are on.
No AC output; Output OK
LED is off.
Short circuit or overload on
output.
Remove short circuit or overload.
Turn off input and output circuit
breakers. Turn input circuit breaker
back on, wait for the Output OK LED
to come on, then turn the output
circuit breaker on.
No output. Both circuit
breakers on. Input and
Output OK LEDs off.
Input battery voltage is below
range.
Check battery voltage. Recharge
battery or install new battery. Turn
inverter back on.
18.3
If none of the above actions solves the problem, call UNIPOWER Telecom at
954-346-2442 Ext. 400 for help.
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