cjoenck

Makes sense that it samples cabin air. The shape of the vanes threw me. I will take my old one apart in the name of science...

JohnK964

Plus there is an arrow on fan case that shows rotation direction😎

cjoenck

So that's what that black smudge above the brand name is. 😳

cjoenck

So I dug into the servos this afternoon and it looks like the right and left mixer servos are working. Is it possible the CCU can throw an error code in error? I thought code 32 indicated that I had a bad servo motor but it looks like the motor still works. I cleared the error code a couple of time but this one keeps coming back. What am I missing?

ToreB

The internal servo motor shorts and make a burn mark on one spot of the travel. Next time it reaches this spot it will be stopped and the CCU will store a fault code.
You need to either change or refurbish the servo in question.
Cheers,
Tore

cjoenck

Got my new fan today and Porsche clearly changed the design


Also tested current draw on calibrated 12v. Here is the old design


Hand here is the draw for the new design