Chosen Solution
I’m with an APC UPS, model Back-UPS Pro 1500, which is displaying “F05” error, and constant whistle. To repair I need the electric plate (640-3078A-Z_REV07) and service manual. Thanks if anyone can help me.
As far as your error, review the guide, here’s the error messages:
You’ll need to contact APC for the part. But you have a deeper problem as the charging logic is damaged ‘F05 - Charge Fault
@caciola the board is a lot easier to find than the service manual. The board is currently for sale at places like this.
