English
Symptom | Possible Cause | What To Do |
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UPS will not turn on | On/Off/Test button not | Press and release the On/Off/ |
| pushed | Test button to start UPS |
UPS operates in | Input AC circuit breaker is | Reset circuit breaker by |
battery mode only, | tripped | pressing the plunger back in. |
even though there is |
| If the AC circuit breaker trips |
normal AC present |
| after UPS starts up, reduce |
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| the load on the UPS |
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Fault LED is | UPS has detected an | Call for service |
illuminated | internal fault |
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Site Wiring Fault | Incorrect service wiring | Have a Qualified Electrician |
LED is illuminated |
| correct the service wiring |
The AC normal | The UPS is being | Disconnect the computer |
LED is illuminated, | controlled via its | cable from the UPS and press |
but there is no out- | communications port | the On button. If UPS works |
put |
| normally, the software has |
|
| control of the UPS |
UPS does not | The batteries may be weak | Charge the batteries for 8 |
provide expected | or at the end of useful | hours and retest. If the runtime |
runtime | service life | is still less than expected, the |
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| batteries may need to be |
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| replaced, even though the |
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| Weak/Bad Battery LED is not |
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| illuminated |
Weak/Bad Battery | Weak/bad batteries or bad | Check battery connections, |
LED is illuminated | connections at the battery | charge the batteries for 8 |
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| hours, replace the batteries |
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UPS occasionally | Normal operation | The UPS is performing its |
emits a beep |
| intended function |
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Overload LED is | The load has exceeded the | Check the specifications (see |
illuminated and a | UPS's capacity | section 8). Remove part of the |
constant alarm |
| load |
The Boost LED or | The UPS is in either the | The UPS is performing its |
Buck LED is blink- | Boost mode or the Buck | intended function |
ing. | mode |
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