Hissing

[Kyle Keller]

I hear a hissing sound coming from behind the A/C panel when the system is turned off. It goes away whenever I turn it to any one of the controls. Just deal with it or do I have a problem? Been going on for about a week. Heat and A/C both work fine just the noise is kind of annoying.



Kyle

 

[Les C]

Kyle ... my Gen 2 '10 STA was doing the same thing back in May, it was a vacuum valve, part # XR3Z-19A563-AA & under warranty, but it seems to be starting to do it again. Mine had done it since day one last Jan.

 

[EddieS'04]

Vacuum leak on the controler. Might just be a connection. I would pull the panel and inspect it.