Bug ID 923609: rSeries 5900 Error - Thermal fault detected in hardware

Last Modified: Apr 28, 2025

Affected Product(s):
F5OS F5OS(all modules)

Fixed In:
F5OS-A 1.1.0

Opened: Jul 02, 2020

Severity: 3-Major

Symptoms

An rSeries 5900 displays the following error message: "WARNING: Thermal fault detected in hardware" This issue occurs intermittently on reboot at normal operating temperature. It is a false alarm.

Impact

Produces alarm message after reboot on the LCD that indicates the device is or has exceeded operating temperature, even when it's operating within normal operating temperature ranges.

Conditions

Reboot a device running at operating temperature.

Workaround

None

Fix Information

BIOS update fixes faulty thermal threshold configuration code that was causing false thermal event upon reboot.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips