APC Smart-UPS Error Code A012

APC UPS Major Alarm

Model: Smart-UPS | Code: A012

Applicable Systems
Symmetra LX

Symptoms

The bypass source is not available. The UPS cannot transfer to bypass mode.

Possible Causes

  • Bypass input power absent or out of range
  • Bypass circuit breaker open

Troubleshooting Steps

  1. Step 1: Check the bypass input power source
    Bypass power is absent or out of range
  2. Step 2: Verify the bypass circuit breaker is closed
    Breaker is closed but bypass power is still unavailable

How to Reset

To reset: Restore bypass input power to within acceptable range.

Related APC Fault Codes

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Source: APC Smart-UPS User Manual, Schneider Electric/APC

Category: UPS