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IssacZachary
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Leaf Number: 420789
Location: Gunnison, CO, USA

Re: The Best, Least-Known Tips & Tricks

Fri Jan 27, 2017 8:10 am

I'm consistently being able to get both defrost and feet to work with recirculation. I'm just not sure how I'm doing it. I think that since it has been down below 0*F/15*C (it's been around -20*F all night) that when I turn on the heater to Auto it automatically selects defrost and feet. If I get defrost and feet by doing that then I can push the recirculation button and get recirculation and defrost and feet, or partial recirculation too if I hold the button down for a couple of seconds.

Image
2013 SL, 40,000 miles, 12 bars.

jjeff
Posts: 1071
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Delivery Date: 13 Jul 2014
Leaf Number: 422121
Location: MSP MN

Re: The Best, Least-Known Tips & Tricks

Fri Jan 27, 2017 8:22 am

-20F :shock: thats cold! At that temp have you noted the screens on the dash are veeerrrrrryyyyyy slow to switch? When it got down to -10F here earlier in the winter(we can get -20F or even -30F here but it's extremely rare, I haven't seen -20F since I got my Leaf) I noticed the screens had a large lag, like they were moving through molasses :lol: once the car warmed up the dash was back to normal but if it was that way at -10F I'm wondering how things worked at even colder.....
Interesting trick about the recirc + defrost, I'm not sure I've even tried AUTO as I never really use that mode(I dislike the fast fan speed it uses) but are you saying this trick doesn't work on more reasonable temps? I'll have to try it.
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

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IssacZachary
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Joined: Fri Jan 13, 2017 9:57 am
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Leaf Number: 420789
Location: Gunnison, CO, USA

Re: The Best, Least-Known Tips & Tricks

Fri Jan 27, 2017 8:43 am

From what I can tell, Auto not only selects between heat, A/C and fan speed, it also selects which vents it will use. If the cabin temperature is close to the selected temperature it selects bi-level. If it's much colder it selects feet. And if it's much colder than that it selects feet and defrost.

Once you get feet and defrost you can turn on full or partial recirculation and then choose whatever fan speed or temp you want.

I'm going to play around with it a bit more to see if what I think is right. I'm guessing that turning the temp up to 90*F will make it more likely to go to feet and defrost on Auto.
2013 SL, 40,000 miles, 12 bars.

jjeff
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Joined: Wed Jan 13, 2016 9:10 am
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Leaf Number: 422121
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Re: The Best, Least-Known Tips & Tricks

Fri Jan 27, 2017 8:55 am

IssacZachary wrote:From what I can tell, Auto not only selects between heat, A/C and fan speed, it also selects which vents it will use.

Yes I believe that is true, it's why I don't really ever use AUTO because it selects a fan speed much higher than I prefer. Once you manually change something, whether it be fan speed or where the air goes, it turns AUTO off and goes into manual mode.
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

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IssacZachary
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Joined: Fri Jan 13, 2017 9:57 am
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Leaf Number: 420789
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Re: The Best, Least-Known Tips & Tricks

Fri Jan 27, 2017 9:06 am

jjeff wrote:Once you manually change something, whether it be fan speed or where the air goes, it turns AUTO off and goes into manual mode.

Yes but using Auto before pushing the recirculation button seems to be the only way to get the defrost and recirculation mode to work at the same time. And once it's recirculating it's back in manual mode again.

I have the habit of hitting Auto then selecting fan speed as a quick way to get out of defrost and not having to look to see if I'm selecting feet or not as I scroll through the different vent modes.
2013 SL, 40,000 miles, 12 bars.

jjeff
Posts: 1071
Joined: Wed Jan 13, 2016 9:10 am
Delivery Date: 13 Jul 2014
Leaf Number: 422121
Location: MSP MN

Re: The Best, Least-Known Tips & Tricks

Fri Jan 27, 2017 9:31 am

IssacZachary wrote:
jjeff wrote:Once you manually change something, whether it be fan speed or where the air goes, it turns AUTO off and goes into manual mode.

.....
I have the habit of hitting Auto then selecting fan speed as a quick way to get out of defrost and not having to look to see if I'm selecting feet or not as I scroll through the different vent modes.

Sounds like a good tip, I'll give it a shot and report back how it works. I'll try it on my '13S I'm driving today and later on my '12SL who's dash looks just like your photo.
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

LeftieBiker
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Location: Upstate New York, US

Re: The Best, Least-Known Tips & Tricks

Fri Jan 27, 2017 1:49 pm

Yes, let's get this documented! If it works consistently we have a great new Tip/Trick for frigid weather. I never use Auto either, because it rarely selects a mode and speed with which I agree. Well done, Issac. Zachary?
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

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IssacZachary
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Re: The Best, Least-Known Tips & Tricks

Fri Jan 27, 2017 11:48 pm

Ok. So this is what I have so far. Mind you I had a thing or two backwards.:

2013 SL. Testing done between -20°F and 6°F. The following conditions, so far, need to be met:

  1. The ambient temperature needs to be very cold. I'm not sure how cold. I do know that if it's cold enough for the heat pump to not come on it's cold enough for this to work.
  2. The actual cabin temperature can't be too much colder than the climate control "thermostat" temperature. This means the cabin must be preheated somehow, or the heater left on for quite a while. Also the climate control "thermostat" can't be set too high.
  3. Use the Auto button. If the previous conditions are met, then when you use the Auto button you will see it automatically adjusts the vents to defrost and feet, as well as adjusts the fan speed automatically.
  4. Turn on recirculation or partial recirculation. After you get the defrost and feet option from using the Auto feature you can now turn on recirculation and still have feet and defrost. You can also adjust your fan speed and "thermostat" to whatever you want because it will be out of Auto mode once you touch the recirculation button. I do believe you have to also turn full recirculation one once to switch from Auto to manual mode before pressing it for a couple seconds to get partial recirculation.

What seems to be happening is this. Normally when Auto is used it selects the vents to be used depending on the cabin temperature, namely; dash vents when A/C is on, bi-level (feet and dash vents) when it needs to slightly warm the cabin air, and feet vents when the cabin is much cooler than the desired temperature.

But when the ambient outside temperature is extremely cold it does this; defrost and feet vents when it needs to slightly warm the cabin air, and feet only vents when the cabin is much cooler than the desired temperature.

Basically, at very cold ambient temperatures the Auto function replaces defrost where it would normally use dash vents along with the feet vents. And for some reason when it does that it also allows you to chose recirculating air.
2013 SL, 40,000 miles, 12 bars.

LeftieBiker
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Re: The Best, Least-Known Tips & Tricks

Sat Jan 28, 2017 12:52 am

So, with the outside temps colder than 15F? 10F? if we first heat the cabin to about 72 (that alone might be hard - are you sure the actual cabin temp has to be that mild? - then engage Auto, it should switch to Floor+Defrost and then let us use Recirculate. We aren't expecting any frigid temps here for a while, so I won't be able to experiment. I have a thermometer/hygrometer for the cabin, though, and it's usually reading in the forties or fifties (F) even when the cabin feels ok in very cold weather...you may want to pick up a cheap thermometer for the cabin.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

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IssacZachary
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Re: The Best, Least-Known Tips & Tricks

Sat Jan 28, 2017 1:09 am

To preheat the inside at -20°F in the mornings I have the preheat timer come on automatically which is set to 70°F. I also had another 1,500W heater I place on the rear seat this morning. It's also been sunny all day for the past few days, which also helps keep the interior warm.

When I drive around I have the heat set at 60°F. So when I first get into the car and press Auto it goes to heat, floor/defrost mode with the fan speed about middle. But if I keep increasing the thermostat to 70°, 80° or 90°F the fan speed increases and at some point it goes to floor vents only. If I lower the thermostat it goes back to floor/defrost.
2013 SL, 40,000 miles, 12 bars.

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