Skip to main content
nalexiou
Staff & Editor
Staff & Editor
April 1, 2026

Technical Tip: PSU abnormal voltage value alert in FortiProxy after upgrade

  • April 1, 2026
  • 0 replies
  • 83 views
Description This article describes how to verify if the PSU is faulty when abnormal state alerts are received.
Scope

FortiProxy 400E.

FortiProxy 400G.

Solution

After the upgrade of FortiProxy, it is possible to receive PSU alerts indicating an abnormal state. This might be caused by a reported issue, which is cosmetic and has no impact.

 

To verify if the PSU is faulty, or if the errors are generated because of the known issue, run the debug:

 

diagnose hardware sysinfo sensor-status-poll 1
diagnose debug console timestamp enable
diagnose debug enable

 

The expected output will be similar to:

 

2026-02-27 12:09:49 Sensor readings:
2026-02-27 12:09:49 PSU1: Main 12V power supply (left)
2026-02-27 12:09:49 Value: 8.06V  <<
2026-02-27 12:09:49 Normal value: 12.00V
2026-02-27 12:09:49 Status: abnormal
2026-02-27 12:09:49 PSU2: Main 12V power supply (right)
2026-02-27 12:09:49 Value: 11.92V  <<
2026-02-27 12:09:49 Status: normal

 

If the values are floating between 12V and other values (e.g., 8V, 15V), then the PSU has no issue, the device is affected by the known issue, and the alerts can be ignored.

The fix for the issue is included in FortiProxy versions 7.4.14 and 7.6.6.