2018 F350 AC blower not workimg

[Smokin 6.0]

Was working fine yesterday and now all of a sudden I have no fan on any speed or setting.

 

[DEEZUZ]

Combined with your other issue I'd suspect you have rodents. Chewing on your soy based wiring.

Any chance of this? Mice, shrews, squirrels, etc in your area?

 

[DEEZUZ]

I've had more 2015-2023 trucks in here for chewed up wiring than I have in 16 years of any trucks older than those.

 

[Smokin 6.0]

It sure. I’m in Indiana and have only had it a month. Came from Florida

 

[Smokin 6.0]

Back to this I changed the pigtail for the blower with a new OEM ford. I checked voltage at the connector and have 12v. I got a new blower and same thing. Can someone explain what the 3rd signal wire does. I even changed the control buttons with a whole new panel I had laying around and same issue