Clicking noise from air conditioning fan on 2004 Infiniti QX56

I hear a clicking noise possibly coming from the a/c fan (blower) when fan is not in use. Noise starts when I start up the suv and sometimes while driving. The a/c or heat can be off or on and it still makes this noise. HELP!

Asked by for the 2004 Infiniti QX56
I have the same problem. When switching from heat to AC it makes clicking noise from under dash & AC doesn't work.
1 more answer , 1 more comment
Sounds like the blendoor acutator getting stuck between vent levels. Problem is buried behind dash near heater core.
How did you fix this problem? Can you PLEASE help!, THANK YOU!