TROUBLESHOOTING GUIDE
PROBLEM | CAUSE | SOLUTION |
UPS fails to start when On/Off | UPS output short circuited or | Ensure UPS is off. Disconnect all |
button is pressed | overloaded. | loads and ensure nothing is |
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| lodged in output receptacles. |
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| Ensure loads are not defective or |
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| shorted internally. |
| Internal fuse is blown, indicating | Do not attempt to open or service |
| internal fault. | the UPS. Contact your dealer or |
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| LTS. |
Utility indicator flashing | UPS not plugged in. | UPS is operating in battery mode, |
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| make certain UPS is securely |
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| plugged into the wall receptacle. |
| UPS input protection has opened. | UPS is operating in battery mode. |
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| Save data and close applications. |
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| Replace UPS input fuse or reset |
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| input breaker, then restart UPS . |
| Utility voltage out of UPS input | UPS is operating in battery mode. |
| range. | Save data and close applications. |
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| Ensure utility supply voltage is |
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| within acceptable limits for UPS. |
UPS has reduced battery time | Batteries not charged. | Keep UPS plugged in |
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| continuously at least 24 hours to |
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| recharge batteries. |
| UPS is overloaded. | Check load level display and |
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| remove non essential loads. |
| Batteries may not be able to hold | Replace batteries. Contact your |
| a full charge due to age. | dealer or LTS for replacement |
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| battery kit. |
“Fault” indicator and diagnostic | UPS fan failure or battery | UPS requires service. Contact |
LED “A” are illuminated | overcharge. | your dealer or LTS. |
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“Fault” indicator and diagnostic | UPS failed the battery test. | Replace batteries. Contact your |
LED “B” are illuminated |
| dealer or LTS for replacement |
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| battery kit. |
UPS shut down. “Fault” indicator | UPS overloaded or load | Check load level display and |
and diagnostic LED “D” are | equipment is faulty. | remove non essential loads. |
illuminated |
| Recalculate load VA and reduce |
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| number of loads connected to |
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| UPS. Check load equipment for |
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| faults. |
UPS shuts down with the “Fault” | UPS shutdown due to internal | UPS requires service. Contact |
indicator and diagnostic LEDs “A” | failure. | your dealer or LTS. |
& “B” are illuminated |
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UPS shuts down with the “Fault” | UPS shutdown due to an internal | Ensure UPS is not overloaded, |
indicator and diagnostic LEDs “A” | over temperature condition. | ventilation openings not blocked, |
& “D” are illuminated |
| or room ambient temperature not |
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| excessive. Wait 30 minutes to |
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| allow UPS to cool, then restart |
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| UPS. If it does not restart, |
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| contact your dealer or LTS. |
UPS shuts down with the “Fault” | UPS shutdown due to a command | Your UPS has received a signal |
indicator and diagnostic LEDs “B” | from the communications port(s). | or command from the attached |
& “D” are illuminated |
| computer. If this was inadvertent, |
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| ensure the communication cable |
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| used is correct for your system. |
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| For assistance, contact your |
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| dealer or LTS. |
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