Defroster Question
01-18-2018, 06:48 PM
#11
Floor modes on most vehicles have a defrost bleed to need the windshield and side windows clear. If the glass were not heated one could get condensate (fogging) on the inside surfaces.
That's another reason why Recirc. times out... to prevent moisture from the footwell being drawn into the HVAC and fogging the windscreen.
That's another reason why Recirc. times out... to prevent moisture from the footwell being drawn into the HVAC and fogging the windscreen.
01-19-2018, 08:22 AM
#12
Senior Member
Hmmm! "blower on passive". help me out here! I don't understand your term "blower in Passive".
I have a single zone system in my 2015. When I turn the HVAC Off I can hear the Recirc door move to seal the fresh air path off. Driving down the road at any speed I do not have air flowing into my vehicle....none. Driving with the HVAC ON, Blower setting to the lowest speed the air volume through the HVAC does not change with the vehicle's speed, it stays pretty consistent. Do you have a dual zone system? Does the air volumes change with vehicle speed with the HVAC OFF ? Does the air volume change with the HVAC ON? IF IT DOES !! Is the air temperature through the system changing when you adjust the blend door(s) from full heat to full cold? or does it remain the same, i.e. close to outside ambient or a heated condition?
I have a single zone system in my 2015. When I turn the HVAC Off I can hear the Recirc door move to seal the fresh air path off. Driving down the road at any speed I do not have air flowing into my vehicle....none. Driving with the HVAC ON, Blower setting to the lowest speed the air volume through the HVAC does not change with the vehicle's speed, it stays pretty consistent. Do you have a dual zone system? Does the air volumes change with vehicle speed with the HVAC OFF ? Does the air volume change with the HVAC ON? IF IT DOES !! Is the air temperature through the system changing when you adjust the blend door(s) from full heat to full cold? or does it remain the same, i.e. close to outside ambient or a heated condition?