Air conditioner starts from defrost then switches to dash vents
#1
Air conditioner starts from defrost then switches to dash vents
My Mercury 2004 GS with ETC Air conditioning starts from defrost then switches to dash vents.
Is the a way to reset the ETC to factory defaults?
Thanks in Advance
Russ
Is the a way to reset the ETC to factory defaults?
Thanks in Advance
Russ
#2
Usually when a HVAC system goes to defrost there is a lack of vacuum to operate the right mode. Defrost is the default when the vacuum source is gone. The blend doors, and mode doors are operated by engine vacuum. Start with checking the feed from the engine to the HVAC box. Then pull the Climate control head and ck for vacuum there. The head could also be bad. Not sending the vacuum to the right place quick enough.
#3
Usually when a HVAC system goes to defrost there is a lack of vacuum to operate the right mode. Defrost is the default when the vacuum source is gone. The blend doors, and mode doors are operated by engine vacuum. Start with checking the feed from the engine to the HVAC box. Then pull the Climate control head and ck for vacuum there. The head could also be bad. Not sending the vacuum to the right place quick enough.
#6
Start with checking the feed from the engine to the HVAC box. Then pull the Climate control head and ck for vacuum there. The head could also be bad. Not sending the vacuum to the right place quick enough.
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Once Upon a Time Season 1 DVD
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