surt8000xli ,fault led light

[BillP]

hi,

from months ago we installe ups SURT8000XLI ,test ok,now ups give fault battery charger fault and battery dead,i know fault in charge ciricuit but no found any component damaged need to test it how

thanks.

rasha arafat

[Anonymous user · Accepted solution]

Unfortunately APC UPS wiring diagrams are proprietary and are not published. In many cases UPS internal circuitry and components will fail but the damage will not be visible...eg relays on the circuit boards can become welded internally and not show any damage from the outside. Or there could be blown fuses that do not show external  - if you use an ohm-meter these can be checked for continuity.

Good luck!