[BUG] Cooling fan full speed after 2.0.9.3 update

[marlinfwgeek]

Did you test the latest bugfix-2.0.x code?

Yes, the issue still exists with the latest 'bugfix-2.0.x' code

Bug Description

After updating to 2.0.9.3, the cooling fan on both my Anet A8s and my Anet A8 Plus run at full speed after power on, even though '0%' is displayed for fan speed. If I move the cooling fan speed setting to 100% and then back to 0%, the fan then turns off but will go back to 100% if the printer is power cycled or experiences a serial reset.

Bug Timeline

First started with updating to 2.0.9.3 - was not an issue in 2.0.9.2 or prior (going back to at least 2.0.7 or earlier)

Expected behavior

Cooling fan should be off at power on and/or when setting is set to 0%

Actual behavior

Print cooling fan runs at 100% even though the setting is set to 0%

Steps to Reproduce

After power on or a serial reset of the printer, the print cooling fan runs at 100%

Version of Marlin Firmware

2.0.9.3

Printer model

Anet A8 and Anet A8 Plus

Electronics

Stock electronics

Add-ons

Anet A8 full graphics display

Bed Leveling

No Bed Leveling, I do this manually

Your Slicer

Cura

Host Software

Cura

Additional information & file uploads

Nightly build and 2.0.9.3 release configs for both the A8 Plus and A8 uploaded

[descipher]

Please attach configuration files.

[marlinfwgeek]

Marlin.zip
Here's the config for my A8 Plus using the latest nightly build

[marlinfwgeek]

Configuration.zip
Here's the config for my A8s using the 2.0.9.3 build

[thisiskeithb]

Duplicate of #23418

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.