## page was renamed from Kernel/Reference/fwts/fan
== Firmware Test Suite - fan test ==

This test simple looks for the existence of fan devices and with version V0.23.19 also exercises the CPU and
checks to see if any fan status has changed.

=== Examples: ===

{{{fwts fan -}}}

..runs the fan test on your machine and dumps the output to stdout.

== Explanation of test results ==

Certain test results may require a little more explanation. This section will try and give some context to specific test failures.

||Error ID||Explanation||
||No``Fan``Type||The /sys thermal control entry should have a type file but this does not seem to exist.||
||No``Fan``Max``State||The /sys thermal control entry should have a max_state file but this does not seem to exist.||
||No``Fan``Cur`State||The /sys thermal control entry should have a cur_state file but this does not seem to exist.||
||Fan``Cur``State``Decreased||The cur_state has decreased after exercising the CPU, it is expected to increase.||