Maruson | Tacoma 1KVA-3KVA User Manual
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spliced to a button, ensure the wires are
secure and connected to the correct
opening.
The UPS does not
provide the expected
battery time.
Batteries are not fully
charged.
Keep UPS connected to utility power for at
least 10 hours to recharge the batteries.
UPS overloaded.
Check equipment and remove some non-
critical loads. Repeat until UPS operates
normally.
Battery aged.
Replace the batteries with a new set.
Charger failed.
Check the charger. Contact your local
authorized dealer or Maruson.
The UPS does not
switch over to Battery
Mode
UPS operating in
Bypass Mode.
UPS must be set to Line Mode or ECO
Mode to switch over to Battery Mode when
utility power failure occurs.
The UPS does not
start.
The input source is not
connected correctly.
Check the input connection is securely
connected and verify there is power at the
source. Press the ON button for 2
seconds.
Battery is disconnected,
battery voltage is too
low, or charger failed.
Check the LCD for any additional status
information.
Check the battery connections. Start a
battery test.
Contact your local authorized dealer or
Maruson support if above solutions do not
resolve issue.
The EPO switch is
active or connector is
missing.
Check the rear of the UPS to verify the
EPO connection.
UPS fault.
Contact your local authorized dealer or
Maruson.
Battery bars always
indicate charging.
No issue.
The UPS will always be charging the
internal batteries under normal conditions.
Fan(s) always on.
No issue.
The fan(s) will always be on to prevent
overheating.
Battery self-test does
not work.
Low battery voltage.
If this is a new unit or has been sitting in
storage for a while, allow the UPS to
charge in Standby Mode for 24 hours
before running a battery test.
6.
MAINTENANCE
CAUTION: Risk of electric shock.
Read the Battery Safety section of this
manual before continuing with any maintenance, servicing, or replacement.
6.1.
BATTERY MAINTENANCE
1)
This UPS uses valve regulated sealed lead-acid (SLA) maintenance-free
batteries. They should be charged regularly in order to maximize the life
expectancy of the battery. When connected to utility power, whether the UPS
