Alfredcroft Report post Posted January 20, 2011 I have a coachman 2006 Aurora on a Ford chassis V10 2005. I cannot find info in owners manual to help me fix this problem. If anyone can help with info I would appreciate it. If I put the switch on air or vent etc the blower stay on vent but the different settings will work. help!!!! aldom70@hotmail.com Share this post Link to post Share on other sites
wolfe10 Report post Posted January 20, 2011 Alfred, If I understand the problem correctly from the title of your post, irrespective of where you put the switch, the fan blows out the defrost vents. If this is not the issue, please give more details. If so, you need to check the vacuum lines from the engine intake manifold to the vacuum storage reservoir and from the reservoir to the dash HVAC switch. Defrost is the "default" location for the system. Brett Share this post Link to post Share on other sites
nitehawk Report post Posted January 21, 2011 FWIW I actually had a vacuum reservoir fail on one of the Fords I owned and had the same symptoms mentioned. Share this post Link to post Share on other sites
Alfredcroft Report post Posted January 21, 2011 Alfred,If I understand the problem correctly from the title of your post, irrespective of where you put the switch, the fan blows out the defrost vents. If this is not the issue, please give more details. If so, you need to check the vacuum lines from the engine intake manifold to the vacuum storage reservoir and from the reservoir to the dash HVAC switch. Defrost is the "default" location for the system. Brett Thank you Brett I did not give vacuum control a thought . Will trace the vacuum line and see if it is disconnected or plugged up. Thank You for the heads up. Al Share this post Link to post Share on other sites
