Modifications Reserved 25OPM_ITS_USM_M06_M20_0US_V011 (09/2007)Appendix A: TroubleshootingProblem Possible Reasons SolutionsInput power source error Check the power sourceInput circuit breaker on the rear panelhas tripped Reset Input circuit breakerTime of pressing the ON/TEST button istoo short Press the “ON/TEST” button for over 1 secondUPS won't operate afterpressing “ON/TEST” or “OFF”buttonsNo LEDs illuminated, nowarning sounds Output short circuit or overload on UPSTurn OFF UPS, take disconnect all load(s), verify there are no problemson the load(s) or any internal short circuit. Press the “ON” button forover 1 secondNo power source input Check the input power sourceIndicates no utility, and alarmsevery several seconds Non-fuse switch on the rear panel hasn'tbeen opened Press the Non-fuse switch to its "ON" positionFault buzzer keeps sounding UPS has internal failure Contact the GE UPS Service Center for help at 800-637-1738Alarm continues sounding Overload Remove some loadInput circuit breaker on the rear panelhas tripped Reset Input circuit breakerUtility indicating light is notilluminatedThe voltage of utility is exceeding UPSinput rangeSave the digital data and shutdown the applying program to make sureutility is within UPS range1. Batteries haven't been charged2. UPS overload3. Batteries are old and can't be fullychargedKeep UPS input (utility) power "ON" for over 3 hours to recharge thebatteries. Verify the load and disconnect any non-crucial loadequipmentAvailable capacity duration ofthe batteries is too shortThe battery charger is out of order Contact the GE UPS Service Center for help at 800-637-1738The battery alarm LED isflashing when the power ofUPS is supplied by utilityVoltage of batteries is too low or thebatteries haven't been connectedInspect the battery section of UPS, make sure batteries are securelyconnected. If there is any damage on battery packs, they must bereplaced