Once a year, with the UPS powered off and unplugged, open the case and torque battery terminal nuts to 5-6 in-lbs (or hand-tight plus ¼ turn). Use dielectric grease on terminals to prevent corrosion.
Open the unit (warranty voided – only if out of warranty). apc ups power system error 02000 link
If the error returns after a reset, the internal hardware (like the inverter or AD converter) is likely faulty. STR6KXLI System error 02000 - Hardware & Infrastructure Once a year, with the UPS powered off
| Code | Meaning | “Link” Relation | |------|---------|----------------| | 02000 | Battery missing, disconnected, or internal fuse blown | The “link” refers to the battery’s connection to the UPS main board | If the error returns after a reset, the
: Battery disconnected or bad Replacement Battery Cartridge (RBC). : Output relay weld. Schneider Electric Community Immediate Troubleshooting: The "Brain Dead" Reset