| Symptom |
Possible Cause |
What to do |
| UPS will not turn on (UPS not ON) |
On / Off / Test button not pushed |
Press the On button momentarily, (one beep) to start UPS |
| UPS operates in battery mode only, even though there is normal AC present |
Input AC circuit breaker is tripped |
Reset circuit breaker by pressing the plunger back in. If the AC circuit breaker trips after UPS starts up, reduce the load on the UPS |
| Fault LED is illuminated |
UPS has detected an internal fault |
Call for service |
| The Site Wiring Fault LED is illuminated |
Incorrect service wiring |
Have a qualified electrician correct the service wiring |
| The On-line/On-Battery LED is illuminated, but there is no output |
The UPS is being controlled via its computer port |
Disconnect the computer cable from the UPS and press the On button momentarily. If UPS works normally, software has control of the UPS |
| UPS does not provide expected backup time with internal batteries or with a Battery Pack |
The batteries may be weak or at the end of useful service life. The Battery Pack's circuit breaker maybe tripped |
Charge the batteries for 8 hours and retest. If the backup time is still less than expected, the batteries may need to be replaced, even though the Weak/Bad Battery LED is not illuminated. Reset the Battery Pack's circuit breaker |
| Weak/Bad Battery LED is illuminated |
Weak or bad batteries/bad battery connection |
Check battery connection/replace batteries. Follow battery replacement procedures in section 6 |
| UPS occasionally emits a beep |
Normal operation |
The UPS is performing its intended function |
| Overload LED is illuminated and a constant alarm |
The load has exceeded the UPS's capacity |
Check the specifications (see section 8). Remove part of the load |
| The On-Line LED is blinking and the audible alarm is silent |
The UPS is in either the Buck mode or the Boost mode |
The UPS is performimg its intended function |
Language: ENG ESP 
