What to do if BYP BAD alarm is present on inform UPS?
- JJeremy SolisJul 30, 2025
The BYP BAD alarm on your inform UPS indicates that the bypass mains voltage differs from the inverter reference signal. To resolve this, ensure the bypass circuit breaker is set to the “I”/“ON” position. If your UPS lacks a separate bypass mains input, verify that the input circuit breaker is “I”/“ON”.