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-   -   HVAC module/actuator (http://www.saturnfans.com/forums/showthread.php?t=81730)

DanB98TJ 07-20-2006 01:17 PM

HVAC module/actuator
 
Anyone have a clue about how the HVAC module ("actuator," according to the saturnparts.net catalog) operates? My AC isn't switching from fresh air to recirculating, and I traced it to the module. I pulled it apart and found one of the gears was cracked inside.

My big question is this: the module gets power when the HVAC system is in operation, but it will reverse to change direction of the motor. Is it [i]supposed[/i] to get constant current, or is there something that is supposed to stop the juice after a certain amount of time, when a load (end of travel) is detected, etc? Mine gets constant current, and I'm wondering if that is why the gear is broken to begin with - once it hit the stop and kept getting power something had to give.:dazed: Or, is the gear supposed to slip on the shaft and allow the motor to run constantly?

I don't mind buying a new one (it's only about $35 through saturnparts.net), but if something is wrong and it's just going to break the module again I'll just keep moving the door by hand.:D


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