Rear A/C not working, making noise

[m5pa]

Another A/C issue has popped up with my 08 Mazda 5 GT. I noticed yesterday that the rear air was making a strange noise and not blowing cold. It almost sounds like the fan is going out, but it's also blowing warm air, no cold at all. I know this isn't exactly a separate system like you'd find in a larger van, so what could it be? Anyone else had this problem?

It happened all of a sudden too. My wife and I are usually the only one in the car, she doesn't use the rear air (too noisy for her) but I do to help keep the car cool. It worked fine about a week ago. Keep in mind, I had the air conditioning fixed according to a TSB on this car ( A/C erratic or not working post) a few years ago.

This is not a huge deal really, since I can just leave the system off. But with only 44k miles, this is annoying to me and will hurt when I go to sell it eventually. I haven't had a chance to dig into it yet either or consult my Mazda shop manual. And suggestions on what it is?

Thanks in advance.

 

[microvan5]

Keep starting and stopping the fan for about 50 cycles. That solved a similar problem for me this spring.

 

[X-Tanker]

Could be the actuator that diverts air to the rear vents, had a similar issue with mine last year. This thread helped me fix it:
http://www.mazdas247.com/forum/showthread.php?123793291-HELP!-Rear-a-c-vent-not-blowing-air

 

[m5pa]

Thanks for the direction! Pretty sure this is it, but I will try to cycle the fan button before pulling off the panels.

 

[m5pa]

Repeatedly cycling the fan button from off to on made it work. The door must get "sticky" without use. Thanks again.