12T
Troubleshooting
SYMPTOM
PROBLEMS
CORRECTIONS
No AC Output (All Indicator Lights are OFF)
Unit is not properly connected to utility power
Connect unit to utility power.
Operating Mode Switch is set to “OFF” and AC
Set Operating Mode Switch to “AUTO/REMOTE”.
input is present.
Operating Mode Switch is inadvertently set to
Set Operating Mode Switch to “AUTO/REMOTE”
“CHARGE ONLY” and AC input is absent.
Circuit breaker is tripped.
Reset circuit breaker.
Unit has shut down due to battery overcharge (preventing
Disconnect any auxiliary chargers. Reset by moving Operating Mode
battery damage). The problem may be with connected
Switch to “OFF”. Wait 1 minute and switch to “AUTO/REMOTE”. If
auxiliary chargers, if any, or with the unit’s charger.
unit remains in shutdown mode after several attempts to reset,
contact Tripp Lite Customer Service for assistance.
Unit has shut down due to excessive battery discharge.
Use an auxiliary charger* to raise battery voltage. Check external
battery connections and fuse. Unit automatically resets when
condition is cleared.
Connected batteries are dead.
Check and replace old batteries.
Unit has shut down due to overload.
Reduce load. Reset by moving Operating Mode Switch to “OFF”.
Wait 1 minute. Switch to “AUTO/REMOTE”.
Battery Not Recharging (AC Input Present)
Connected batteries are dead.
Check and replace old batteries.
Battery fuse* is blown.
Check and replace fuse.*
Battery cabling* is loose.
Check and tighten or replace cabling.*
Unit has shut down due to battery overcharge (preventing
Disconnect any auxiliary chargers. Reset by moving Operating Mode
battery damage). The problem may be with connected
Switch to “OFF”. Wait 1 minute and switch to “AUTO/REMOTE”. If
auxiliary chargers, if any, or with the unit’s charger.
unit remains in shutdown mode after several attempts to reset,
contact Tripp Lite Customer Service for assistance.
Charger Enable/Inhibit Switch inadvertently set to “INHIBIT.”
Set Charger Enable/Inhibit Switch to “ENABLE”
Input circuit breaker is tripped.
Reset circuit breaker.
All Three “BATT VOLT/CHRG CURR” LEDs
Battery is excessively discharged. Unit will shut down to
Use an auxiliary charger* to raise battery voltage. Check external
are slowly flashing (½ second flashes) with
prevent battery damage.
battery connections and fuse. Unit automatically resets when
Operating Mode Switch in the
condition is cleared.
“AUTO/REMOTE” position.
All Three “BATT VOLT/CHRG CURR” LEDs
Battery is overcharged. Unit will shut down to prevent battery Disconnect any auxiliary chargers. Reset by moving Operating Mode
are rapidly flashing (¼ second flashes)
damage. The problem may be with connected auxiliary
Switch to “OFF”. Wait 1 minute and switch to “AUTO/REMOTE.” If
with Operating Mode Switch in the
chargers, if any, or with the unit’s charger.
unit remains in shutdown mode after several attempts
“AUTO/REMOTE” position.
to reset, contact Tripp Lite Customer Service for assistance.
Red “LOW” Battery Indicator Light is
Battery voltage is low. Unit has shut down to protect battery
If AC power (utility- or generator-supplied) is present, the unit will
flashing with Operating Mode Switch in the
from damage.
automatically reset itself and start recharging connected batteries.
“AUTO/REMOTE” position.
However, if an external charger is used to recharge the batteries,
you will need to manually reset the unit by moving the Operating
Mode Switch to “OFF” for two seconds then returning it to
“AUTO/REMOTE”.
False reading due to undersized or insufficiently connected
Use sufficient size DC cable sufficiently connected to UPS System.
DC cabling.
Red “LOAD” Operation Indicator Light
Inverter is overloaded. Unit will automatically shut down after Reduce load. Reset by moving Operating Mode Switch to “OFF”.
flashing
5 seconds.
Wait 1 minute. Switch to “AUTO/REMOTE”.
* User-supplied.
Try these remedies for common UPS System problems before calling for assistance. Call Tripp Lite Customer Service at (773) 869-1234
before returning your unit for service.
200409045 93-2400
Regulatory Compliance Identification Numbers
For the purpose of regulatory compliance certifications and identification, your Tripp Lite product has been assigned a unique series number. The series number can be found on
the product nameplate label, along with all required approval markings and information. When requesting compliance information for this product, always refer to the series number.
The series number should not be confused with the marking name or model number of the product.
This product designed and engineered in the USA.
