LEAFfan
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Re: Climate control Fogs up car!

Mon Oct 31, 2011 8:52 pm

ebill3 wrote:
stevewa wrote: Also noted when I turn on the climate control it also resumes charging the battery towards 100 percent even though I have the timer defined for 80 percent only.
Interesting - are you turning on climate control remotely, or in the car? When I did a little test turning climate control on remotely, it did not try to change past 80%, and the blue charge lights did not come on. The far left light blinked, but the two rightmost were off. (as viewed from in the car)
Bill
I always turn on the HVAC remotely, and it ALWAYS charges past 80% while it is pre-cooling/heating. However, since one needs only 5-10 mins. of pre-conditioning, it only charges a few % more. A Nissan HVAC expert told me that the idea of pre-conditioning the cabin is just so it is comfortable when you get in. It isn't really meant to cool or heat beyond that.
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saywatt
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Re: Climate control Fogs up car!

Mon Oct 31, 2011 9:13 pm

If this was the intent, why wouldn't Nissan build in a timer for pre-conditioning? I would think their engineers would have known fogging would occur with the system on recirculate.

LEAFfan wrote:
ebill3 wrote:
stevewa wrote: A Nissan HVAC expert told me that the idea of pre-conditioning the cabin is just so it is comfortable when you get in. It isn't really meant to cool or heat beyond that.

muus
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Re: Climate control Fogs up car!

Tue Nov 01, 2011 8:38 am

Setting the HVAC to recirculation when per-heating is a VERY bad idea. I understand why Nissan did this (to save on electricity and to heat the car quicker) but anyone who lives in cold (below freezing) climate knows you never set your HVAC to recirculation in winter time. When you get into your car with your boots full of snow (and often your coat and hat too), the snow melts and you end up with a very humid environment. You need to lower the humidity level as much as possible and the best way to do this is to heat the cold outside air. When you think about it in an energy conserving manner it does seem pretty wasteful but it is better to do this while connected to the grid than when running off the batteries.

For anyone that hasn't experienced this, I have often had to scrape frost off the INSIDE of my windshield!!! I now park in a warm garage and never have to go trough that again. :)
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JPWhite
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Re: Climate control Fogs up car!

Fri Nov 04, 2011 3:59 am

EVDRIVER wrote:use the AC, it takes a few seconds.
If its 40 degrees outside, how exactly does one turn on the AC? The system will heat not cool. When heating the defrost takes 2-3 minutes. On full fan speed it does cut the time down to maybe 1 minute.
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Re: Climate control Fogs up car!

Fri Nov 04, 2011 4:02 am

Same problem here.

I've noticed that when it rains, the fogging is very heavy if I remotely turn on the pre-heat prior to leaving work. I have to sit in the parking lot for several minutes before it clears up. I'll have to carry a rag in the glove box to clear the fog more quickly using elbow grease, or simply not pre-heat on rainy days.
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saywatt
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Re: Climate control Fogs up car!

Fri Nov 04, 2011 8:00 am

JPWhite wrote:
EVDRIVER wrote:use the AC, it takes a few seconds.
If its 40 degrees outside, how exactly does one turn on the AC? The system will heat not cool. When heating the defrost takes 2-3 minutes. On full fan speed it does cut the time down to maybe 1 minute.

If you are in the car and started it with your key, simply push the AC button. If the system was remotely turned on, the AC is already on ( at least the AC light is on) but the system is set to recirc, thus causing window fogging after a few minutes.

padamson1
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Re: Climate control Fogs up car!

Fri Nov 04, 2011 9:56 am

JPWhite wrote: If its 40 degrees outside, how exactly does one turn on the AC? The system will heat not cool. When heating the defrost takes 2-3 minutes. On full fan speed it does cut the time down to maybe 1 minute.
Actually the A/C in a car is independent of temperature, it can be active when you cool or warm the car. Most importantly, in this context, it is a dehumidifier. This is why the A/C is turned on automatically when you push the front windshield Defrost button in most modern cars. The assumption is that excessive moisture contributes to the formation of the fog on the windshield, so the dehumidifier is turned on too. When I push the windshield defrost button on my LEAF, the A/C light goes on, no matter what my temperature setting is. This could be a feature of my CWP, but I would expect it happens in all LEAFs.

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ebill3
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Re: Climate control Fogs up car!

Mon Nov 14, 2011 2:52 pm

ebill3 wrote:Unfortunately, I don't think there is much you can do except leave a window open. We are not able to set any climate control settings when using the timer or remote turn on, and it sure does go to recirculate.

I have been using remote climate control turn on the last couple of days and not had the fogging problem, but I keep my buggy in the garage and have the front windows open a crack. As you probably know, if you do select defrost, it will go to fresh air, but you can't do that remotely.
Well, that was back in mid-October, but today a different story. Outside temp 48°F, unheated garage, both front windows open about an inch, pre-heat, all windows totally fogged.

Sure, turn the car on, hit defrost and maximum fan speed, and the windows clear in a hurry. But I would like that to happen while using shore power, not battery power.

Bill
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saywatt
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Re: Climate control Fogs up car!

Mon Nov 14, 2011 4:11 pm

Me too :!:

ebill3 wrote:
ebill3 wrote:Unfortunately, I don't think there is much you can do except leave a window open. We are not able to set any climate control settings when using the timer or remote turn on, and it sure does go to recirculate.

I have been using remote climate control turn on the last couple of days and not had the fogging problem, but I keep my buggy in the garage and have the front windows open a crack. As you probably know, if you do select defrost, it will go to fresh air, but you can't do that remotely.
Well, that was back in mid-October, but today a different story. Outside temp 48°F, unheated garage, both front windows open about an inch, pre-heat, all windows totally fogged.

Sure, turn the car on, hit defrost and maximum fan speed, and the windows clear in a hurry. But I would like that to happen while using shore power, not battery power.

Bill

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JPWhite
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Re: Climate control Fogs up car!

Mon Nov 14, 2011 7:25 pm

ebill3 wrote:
Sure, turn the car on, hit defrost and maximum fan speed, and the windows clear in a hurry. But I would like that to happen while using shore power, not battery power.

Bill
So why not turn on the defrost and fan while still plugged up to the mains?
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2011 Blue SL-e, 132,400 Miles.
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7/18/13 (29,206), 8/25/14 (51,728), 7/12/15 (71.108), 5/12/16 (88,362), 10/17/16 (96,532)
New Battery 12/3/16 (98,956)
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