The 2145 UPS installed is not compatible. If it is connected to a 2145 4F2, the incorrect model type is installed. The 2145 UPS cannot be used with other 2145 model types.
Exchange the 2145 UPS for one of the correct type, or replace the 2145 UPS with a 2145 UPS-1U.
Possible Cause-FRUs or other: