2006 porsche cayenne blower motor. replaced regulator which I think is same as electronic motor controller. #56 fuse is good

SOURCE: fule door on my 2004 Porsche Cayenne S won't open with release

It's likely the fuse. The fuse diagram is in your owners manual. The fuse box is on the side of the dash when you open your driver's door. That should solve your issue.

SOURCE: 2007 Porsche Cayenne. replaced blown 20A fuse for

Have the system checked for a short ,and a possible, power tap into that curcuit.

SOURCE: 1992 bonneville sse w/ac replaced blower motor +

You replaced the blower control module or the blower control panel on the dash? This has automatic temp control right?

SOURCE: 2001 ford mustang 3.8. blower

Look next to the blower motor for the blower motor resistor, the power for the blower motor runs through this resistor, if it has burned out then no power will get to the motor. It will be small and held into the housing by 2 screws and will have wiring plugged in to it. Check with an ohm meter, however if it is burned out usually you can see that directly. Hope this helps.

SOURCE: blowing fuses on blower motor 2006 e250 econoline

Both are possible.But it can be blower motor issue mostly.Its taking too load and that's blowing the fuse.How to Test and Replace Blower motor on car? http://repairhelpcenter.blogspot.com/2011/12/how-to-test-and-replace-blower-motor-on.html--------- How to Replace Blower Motor Wheel? http://repairhelpcenter.blogspot.com/2011/12/how-to-replace-blower-motor-wheel.html
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Also more help solutions recommended. Click the link below :---
Blower motor replacing for all vehicles? http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html
----------Blower motor Resistor shorting problem? http://schematicsdiagram.blogspot.com/2011/12/blower-motor-resistor-shorting-problem.html
--------This will help.Thanks.