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An uninterruptible power supply, also uninterruptible power source, UPS or battery/flywheel backup, is an electrical apparatus that provides emergency power to a load when the input power source, typically mains power, fails.

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Back-UPS Pro 1500 - Error: F05

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.

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@caciola the board is a lot easier to find than the service manual. The board is currently for sale at places like this.

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@oldturkey03 - Good find!


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As far as your error, review the guide, here's the error messages:

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You'll need to contact APC for the part. But you have a deeper problem as the charging logic is damaged 'F05 - Charge Fault

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Sergio Caciola will be eternally grateful.
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