HVAC control/system
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Laughing Gas
Joined: Jan 2002
Posts: 759
Likes: 95
HVAC control/system
Strange:
Driving home yesterday, I had the HVAC control one notch clockwise from off with the temp set cold. The air coming out of the vents felt like the AC was on (outside temp 80-85 F). I don't think the compressor was running. Is this normal?
Driving home yesterday, I had the HVAC control one notch clockwise from off with the temp set cold. The air coming out of the vents felt like the AC was on (outside temp 80-85 F). I don't think the compressor was running. Is this normal?
Posting Guru
Joined: May 2001
Posts: 1,702
Likes: 0
HVAC control/system
Yep, it's normal. I guess it has something to do with the heater core running hot coolant through it whether you are using the heater or not. Someone named hutchinagusta at www.ford-diesel.com has the fix.
Les
Les
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
HVAC control/system
>Strange:
>
>Driving home yesterday, I had the HVAC control one notch
>clockwise from off with the temp set cold. The air coming
>out of the vents felt like the AC was on (outside temp 80-85
>F). I don't think the compressor was running. Is this
>normal?
If it was indeed, one notch clockwise then I would have it checked. That position (face & foot) should activate the AC.
>
>Driving home yesterday, I had the HVAC control one notch
>clockwise from off with the temp set cold. The air coming
>out of the vents felt like the AC was on (outside temp 80-85
>F). I don't think the compressor was running. Is this
>normal?
If it was indeed, one notch clockwise then I would have it checked. That position (face & foot) should activate the AC.
Thread Starter
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Laughing Gas
Joined: Jan 2002
Posts: 759
Likes: 95
HVAC control/system
[updated:LAST EDITED ON 19-Jun-02 AT 12:24 PM (EST)]Let me clarify:
- The air coming out of the vents was very cold.
- On my SD the 'AC' positions are the 2 most counter-clockwise positions (Marked "AC" & "Max AC").
If the feet & face position is AC on also...is there any position that the AC does not come on (besides 'off')?
If this is true:
http://forums.ford-diesel.com/ubbthreads/showflat.php?Cat=&Board=UBB26&Number=711993&page=5 &view=collapsed&sb=5&o=&fpart=1
then the AC is almost always on unless the outside temp is below a certain level
Could this be true? Doesn't make sense to me.
- The air coming out of the vents was very cold.
- On my SD the 'AC' positions are the 2 most counter-clockwise positions (Marked "AC" & "Max AC").
If the feet & face position is AC on also...is there any position that the AC does not come on (besides 'off')?
If this is true:
http://forums.ford-diesel.com/ubbthreads/showflat.php?Cat=&Board=UBB26&Number=711993&page=5 &view=collapsed&sb=5&o=&fpart=1
then the AC is almost always on unless the outside temp is below a certain level
Could this be true? Doesn't make sense to me.
Elder User
Joined: Nov 2001
Posts: 621
Likes: 0
From: S.W. Oregon
HVAC control/system
a/c does not come on in the vent only position, and the feet only position. There is an explanation of why etc. in the manual. If your a/c is very cold in the other positions you are one of the lucky ones. If you don't mind doing it, please put your a/c on max on a hot day and take the temp of the air blowing out of your center left vent. Please post your temps here.
Thanks
Thanks
Senior User
Joined: Mar 2002
Posts: 132
Likes: 0
From: Castle Rock, Co
HVAC control/system
Jade97, You have not confused anyone. What they said is that the A/C will run in the panel and floor setting (first one to the right of off). As previously stated, the only setting the compressor does not operate in is floor only or panel only. The reason I suspect is that the AC and MAX AC forces air through the Panel (dash) only and if you want cold air at your feet set it to panel/floor. So.... if you want fresh outside air, use the dash or floor setting. BTW it took me about a month before I read the manual and figured it out but I was confused until then.
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Freshman User
Joined: Apr 2002
Posts: 34
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From: Platte City USA
HVAC control/system
I checked the temp of my SD on an 82 degree sunny day with heat index of 91 at the time. Thermometer registered 35 stationary and all the way down to 31 moving. Since it didn't start snowing inside my truck, I'd say it was a little off, but not much. It was defenitely too cold to leave on high. How rough is that?
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Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
HVAC control/system
>I think I'm confusing every one...
>
>I'm getting COLD air WITHOUT turning on the AC!
Ford for Ever is right. You aren't confusing anyone. I think that may have been my fault. I read your post incorrectly.
My reply should have been...Do not worry or fret. Everything is working as it should. That position does indeed activate the AC.
>
>I'm getting COLD air WITHOUT turning on the AC!
Ford for Ever is right. You aren't confusing anyone. I think that may have been my fault. I read your post incorrectly.
My reply should have been...Do not worry or fret. Everything is working as it should. That position does indeed activate the AC.
Elder User
Joined: Nov 2001
Posts: 621
Likes: 0
From: S.W. Oregon
HVAC control/system
That is an VERY low temp compared to mine and the few others I have measured in person! Is there anyone else here that is getting these sorts of temps, (or anything below 40 degrees)?
>I checked the temp of my SD on an 82 degree sunny day with
>heat index of 91 at the time. Thermometer registered 35
>stationary and all the way down to 31 moving. Since it
>didn't start snowing inside my truck, I'd say it was a
>little off, but not much. It was defenitely too cold to
>leave on high. How rough is that?
>I checked the temp of my SD on an 82 degree sunny day with
>heat index of 91 at the time. Thermometer registered 35
>stationary and all the way down to 31 moving. Since it
>didn't start snowing inside my truck, I'd say it was a
>little off, but not much. It was defenitely too cold to
>leave on high. How rough is that?
Post Fiend
Joined: Jan 2002
Posts: 5,859
Likes: 7
From: USA
HVAC control/system
Shepard,
I have an omega digital temperature meter ran the test with probe in the
driverside center register my temps ,today with outside temp 87 degrees
with the a/c in max,I had a low temp of 36 while moving,when stopped at lights it would rise to 41 degrees.It would freeze you out.
Granted I only have a supercab ,not a crewcab.
Rich
I have an omega digital temperature meter ran the test with probe in the
driverside center register my temps ,today with outside temp 87 degrees
with the a/c in max,I had a low temp of 36 while moving,when stopped at lights it would rise to 41 degrees.It would freeze you out.
Granted I only have a supercab ,not a crewcab.
Rich
