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18
Symptom
Possible cause
Remedy
Fault code is shown as 01, 02, 03,
11, 12, 13 and 41 on LCD display
and alarm is continuously
sounding.
A UPS internal fault has
occurred.
Contact your dealer
Battery backup time is shorter
than nominal value
Batteries are not fully
charged
Charge the batteries for at
least 5 hours and then
check capacity. If the
problem still persists,
consult your dealer.
Batteries defect
Contact your dealer to
replace the battery.
4-1. Battery Replacement
NOTICE: The Commander RT series are equipped with internal batteries and user can replace the
batteries without shutting down the UPS or connected loads.(hot-swappable battery design)
Replacement battery pack is a safe procedure and isolated from electrical hazards.
CAUTION!!
Consider all warnings, cautions, and notes before replacing batteries.
Note:
Upon battery disconnection, equipment is not protected from power outages.
Step 1
Step 2
Step 3
Remove front panel.
Disconnect battery wires.
Pull out the battery box by
removing two screws on the
front panel.
Step 4
Step 5
Step 7
Remove the top cover of
battery box and replace the
inside batteries.
After replacing the
batteries, put the battery
box back to original
location and screw it
tightly.
Re-connect the battery wires.
