Issue: UPS models, BE1050G3,BE900G3,BE700G3 and BE500G3 do not support starting a manual self-test using the power button located on the side panel of the UPS.
Product Line: BE1050G3,BE900G3,BE700G3 and BE500G3
Resolution: UPS models BE1050G3,BE900G3,BE700G3 and BE500G3 will perform an automatic self-test when the UPS is turned on.
NOTE: UPS models specifically BE1050G3 and BE900G3 support manual self-test issued via PowerChute Serial Shutdown. Need to install PCSS or PowerChute Serial Shutdown to command UPS for manual self test.
See link below:
https://www.apc.com/us/en/product-range/137943580-powerchute-serial-shutdown/
Kindly do refer below for the basic steps./procedures of performing manual self test via PCSS (PowerChute Serial Shutdown) for BE1050G3 and BE900G3:
STEP1: Go to Product Description "Back UPS BE1050G3" then click "Diagnostics" to proceed with the next step.
See image below: (FIGURE A)
STEP2: Proceed to diagnostic action and select "Self Test".
See image below: (FIGURE B)
STEP3: After selecting the preferred action, kindly click "Apply" to initiate self test.
See image below: (FIGURE C)