Field Notice: FN74001 – ASA Software: FPR1100 And FPR2100 Series Security Appliances Might Incorrectly Report Fan Alert Condition – Software Upgrade Recommended

Field Notice: FN74001

Problem Description:
Some releases of Cisco Adaptive Security Appliance (ASA) Software might incorrectly report a critical revolutions per minute (RPM) fan alert on Cisco Secure Firewall Firepower 1100 (FPR1100) and Firepower 2100 (FPR2100) Series security appliances.

Background:
For Cisco Secure Firewall FPR1100 and FPR2100 Series security appliances, some releases of Cisco ASA Software might incorrectly report a critical RPM fan alert. This issue might also create a Smart Call Home (SCH) message that results in a Cisco support case.

Note: Only Cisco Secure Firewall FPR1120, FPR1140, FPR1150, FPR2110, and FPR2120 are affected by the issue that is described in this field notice. For information on the fan operating condition, see the Cisco Firepower 1100 Series Hardware Installation Guide and the Cisco Firepower 2100 Series Hardware Installation Guide for the appropriate security appliance.
For information on the SCH feature, see the Cisco Secure Firewall ASA Series General Operations CLI Configuration Guide for the appropriate release of Cisco ASA Software.
For information on fan troubleshooting commands, see the FXOS Troubleshooting Commands section of the Cisco FXOS Troubleshooting Guide for the appropriate security appliance.

Problem Symptoms:
The security appliance displays RPM – Critical followed by a chassis Cooling Fan 0: Failure Detected message. An SCH message that results in a Cisco support case might also be created.

This advisory is available at the following link:
https://www.cisco.com/c/en/us/support/docs/field-notices/740/FN74001.html