MartinChico
Posts: 85
Joined: Wed Oct 22, 2014 9:06 am
Delivery Date: 22 Dec 2014
Leaf Number: 314697
Location: Chico, California, USA

Heater or A/C While Charging?

Fri Jan 23, 2015 8:42 am

I've read the owner's manual, and this appears be a simple task, but I'm stumped.

I have been attempting to run the heater for a few minutes, while still charging, before I start my commute home in the evening. So far, all I get is slightly-less-cold air, even after waiting for a solid 5+ minutes for the heater to warm up.

I tried this again using the automatic/thermostat setting, but the results were the same.

This is for a LEAF S, and I did have the ECO setting on in both cases.

Any sage advice?

Thanks!
2015 Leaf S w/QC, Mfd 09/2014; purchased Dec. 22, 2014

bigrob90
Posts: 182
Joined: Fri Oct 31, 2014 3:41 pm
Delivery Date: 31 Oct 2014
Leaf Number: 316941
Location: Atlanta, GA
Contact: Website

Re: Heater or A/C While Charging?

Fri Jan 23, 2015 9:13 am

MartinChico wrote:I've read the owner's manual, and this appears be a simple task, but I'm stumped.

I have been attempting to run the heater for a few minutes, while still charging, before I start my commute home in the evening. So far, all I get is slightly-less-cold air, even after waiting for a solid 5+ minutes for the heater to warm up.

I tried this again using the automatic/thermostat setting, but the results were the same.

This is for a LEAF S, and I did have the ECO setting on in both cases.

Any sage advice?

Thanks!


I do this all the time. Eco does reduce the heater effectiveness. Try also turning on recirculate to increase effectiveness. Turn it off and turn on defrost for a minute right before you leave to get rid of excess humidity.
Cayenne Red 2015 Leaf S w/QC
2 year, 15k lease

MartinChico
Posts: 85
Joined: Wed Oct 22, 2014 9:06 am
Delivery Date: 22 Dec 2014
Leaf Number: 314697
Location: Chico, California, USA

Re: Heater or A/C While Charging?

Fri Jan 23, 2015 9:42 am

bigrob90 wrote:
MartinChico wrote:I've read the owner's manual, and this appears be a simple task, but I'm stumped.

I have been attempting to run the heater for a few minutes, while still charging, before I start my commute home in the evening. So far, all I get is slightly-less-cold air, even after waiting for a solid 5+ minutes for the heater to warm up.

I tried this again using the automatic/thermostat setting, but the results were the same.

This is for a LEAF S, and I did have the ECO setting on in both cases.

Any sage advice?

Thanks!


I do this all the time. Eco does reduce the heater effectiveness. Try also turning on recirculate to increase effectiveness. Turn it off and turn on defrost for a minute right before you leave to get rid of excess humidity.


Yep, tried all that. Still the heater output was much, much less-perhaps none-- than when the heater is operating when the car is being driven.
2015 Leaf S w/QC, Mfd 09/2014; purchased Dec. 22, 2014

bigrob90
Posts: 182
Joined: Fri Oct 31, 2014 3:41 pm
Delivery Date: 31 Oct 2014
Leaf Number: 316941
Location: Atlanta, GA
Contact: Website

Re: Heater or A/C While Charging?

Fri Jan 23, 2015 10:12 am

MartinChico wrote:
bigrob90 wrote:
MartinChico wrote:I've read the owner's manual, and this appears be a simple task, but I'm stumped.

I have been attempting to run the heater for a few minutes, while still charging, before I start my commute home in the evening. So far, all I get is slightly-less-cold air, even after waiting for a solid 5+ minutes for the heater to warm up.

I tried this again using the automatic/thermostat setting, but the results were the same.

This is for a LEAF S, and I did have the ECO setting on in both cases.

Any sage advice?

Thanks!


I do this all the time. Eco does reduce the heater effectiveness. Try also turning on recirculate to increase effectiveness. Turn it off and turn on defrost for a minute right before you leave to get rid of excess humidity.


Yep, tried all that. Still the heater output was much, much less-perhaps none-- than when the heater is operating when the car is being driven.

Are you sure the car is actually charging? Try pushing the charge override button before turning the car on while it is plugged in. It works for me just fine. I have a 2015 S.
Cayenne Red 2015 Leaf S w/QC
2 year, 15k lease

EVFuture
Posts: 22
Joined: Tue Dec 16, 2014 11:02 pm
Delivery Date: 0-12-2014
Location: LA/OC

Re: Heater or A/C While Charging?

Sat Jan 31, 2015 12:29 pm

Does the charging speed just get reduced by the kW usage of the AC/Heater, or is it significantly reduced?

SierraQ
Posts: 185
Joined: Mon Oct 18, 2010 8:44 am
Delivery Date: 02 Sep 2011
Location: Dallas, TX

Re: Heater or A/C While Charging?

Tue Feb 03, 2015 12:07 pm

Since you have a 2015 Leaf the following may not apply since it comes from my knowledge of a 2011 Leaf, which does not have the heat pump.

When heating while charging all of these have to be true:
  • The battery must be charged roughly 20% or more
  • The car must actually be charging (just plugged in does not work unless you use carwings to turn it on)
  • Charging on L2 and L3 (L1, or 110V, I've noticed seems to produce weak heat)
  • Climate control should be on full Auto mode (2015: Heat button may have to be on)
  • Car must be ON (power button once with brake pressed or power button twice with brake not pressed)
  • 2015: ECO mode should be off. (On 2011 ECO mode is always off while in park. I believe it is engaged with a button in 2015. If so then ECO may cut heat output in half even while in park.)

You should check the energy screen and make sure the climate control starts to draw energy within a minute or so. If it stays at zero then something is preventing the car from engaging heat, likely something from the above list.

Another thing you could try is using carwings to remote activate the heat. "That heat" is always stronger for some reason. I used to always do this from my desk about 20 minutes before leaving from work. Even on the weaker L1 charger the car was decently warm by the time I got in it albeit not exact toasty. Conversely in my garage on L2 carwings warms the car within 5-10 minutes.
"Please tell me this doesn't run on gas! Gas explodes, you know?" --Susan in I-Robot

jpadc
Posts: 274
Joined: Sat Dec 13, 2014 7:25 am
Delivery Date: 20 Dec 2014
Location: Indiana & Wisconsin

Re: Heater or A/C While Charging?

Tue Feb 03, 2015 3:25 pm

bigrob90 wrote:Are you sure the car is actually charging? Try pushing the charge override button before turning the car on while it is plugged in. It works for me just fine. I have a 2015 S.

^This
Make sure car is actively charging (one or two Charging Indicator lights are on and one other one flashing). If not, hit the Charge timer OFF switch button and it will force the car to at least start to charge (draw power from the EVSE). Once you confirm that the Charging Indicator lights are flashing in a way that indicating charging, depress the brake peddle and push the Power button. The car will warn you its plugged in, but now the heater will work.

This assumes you are using the J1772 standard charge port with at least a 120 volt 20 amp plug. If its 240 volts you will get a lot more heat. This trick will not work when plugged into a DC fast charger (if equipped).
2013 Leaf S /w Charge Package - Purchased new in Iowa City Dec. 2014
My previous car was a 2008 Prius Touring Package 5 - 73k Miles, 43 MPG lifetime

TimLee
Posts: 2810
Joined: Thu Jan 20, 2011 9:40 am
Delivery Date: 17 May 2011
Leaf Number: 2026
Location: Chattanooga, TN

Re: Heater or A/C While Charging?

Tue Feb 03, 2015 4:52 pm

jpadc wrote:...Once you confirm that the Charging Indicator lights are flashing in a way that indicating charging, depress the brake peddle and push the Power button. The car will warn you its plugged in, but now the heater will work.

...This trick will not work when plugged into a DC fast charger (if equipped).

But with the Level 2 charging and turning the LEAF On the HVAC will only operate while it is charging.
If it becomes fully charged, it is in On mode and HVAC will stop except for the running blower.
Easy to kill the 12V battery doing that because the DC to DC power supply will not come on till 12V battery voltage drops below 10.5 V.
That is really bad for the 12V battery.

With DCQC the LEAF has to be off to start charging.
But once it is charging step on the brake and push the Power button and HVAC works great.
Not sure it keeps working if DCQC stops or if it protects 12V battery in that mode.
Haven't set at completed DCQC long enough to confirm.
Best to move on to L2 once kW drops below rating of your on board charger.
It is faster.
DCQC is really slow on that last few %.

Tim Lee
Chattanooga, TN

Man. Date: 03/10/11, VIN # 2026
Delivered 05-17-2011
Blue Ocean, 2011 SL-eTec

johnrhansen
Posts: 1100
Joined: Mon Aug 12, 2013 7:23 pm
Delivery Date: 15 Jun 2013
Leaf Number: 409445
Location: Seattle, WA

Re: Heater or A/C While Charging?

Tue Feb 03, 2015 5:50 pm

From my observations, there are 4 power on modes available to the car.

Drive mode. all is working. little car is showing, no idiot lights on. Accessed by pushing down the brake pedal and pushing the button. You can drive the car in this mode. The heat and A/c work in this mode.

charge mode. PS light is on. Battery charge indicator light is off. Little car is not showing. Heat and Ac work in this mode. Only available when car is plugged in and charging. (blue lights on dash blinking) Accessed by pushing button when car is plugged in and charging. Brake pedal on or off has no effect.

halfway on mode. all the dash indications show. Pretty much looks exactly like the charge mode above except that the battery charge indicator light is on. this is how I tell the difference between the two. The heater controls light up and the fan runs, but heat and ac do not work. Basically all of the normal things that are powered by 12 v are on, but all the things powered by HV are off. This is accessed by pushing the button with the brake pedal off and the car not plugged in and charging.

accessory mode. just the radio works. accessed by pushing the button again in the halfway on mode.
2013 S model with quick charge package.
AV 30 amp level 2 EVSE, Bosch PowerMax 30 Amp EVSE, EVSE upgraded EVSE.

jpadc
Posts: 274
Joined: Sat Dec 13, 2014 7:25 am
Delivery Date: 20 Dec 2014
Location: Indiana & Wisconsin

Re: Heater or A/C While Charging?

Tue Feb 03, 2015 8:12 pm

TimLee wrote:But with the Level 2 charging and turning the LEAF On the HVAC will only operate while it is charging.If it becomes fully charged, it is in On mode and HVAC will stop except for the running blower.
Easy to kill the 12V battery doing that because the DC to DC power supply will not come on till 12V battery voltage drops below 10.5 V.

You have way more experience with this than me, but I've not seen this in my limited experience. Even when my LEAF was fully charged and I've done this trick, it stops charging (adding GIDs) but never sends a signal to the EVSE to stop delivering power and the 12 volt reading was always over 13 volts (all as reported by Leaf Spy) and I've sat in the car for over an hour this way (okay it was a nap, but whatever). I've only done this while heating (non-heat pump on an S model) so maybe with just AC it will shut down the EVSE. I won't know till it warms up around here :D
TimLee wrote:With DCQC the LEAF has to be off to start charging.
But once it is charging step on the brake and push the Power button and HVAC works great.
Not sure it keeps working if DCQC stops or if it protects 12V battery in that mode.
Haven't set at completed DCQC long enough to confirm.
Best to move on to L2 once kW drops below rating of your on board charger.
It is faster.
DCQC is really slow on that last few %.

I'm going to try this again as the only time I tried it I could not get it to work. I do have the "Free" DC charger on the North side so when I get the chance, I'll try it again. Maybe I did something wrong.
2013 Leaf S /w Charge Package - Purchased new in Iowa City Dec. 2014
My previous car was a 2008 Prius Touring Package 5 - 73k Miles, 43 MPG lifetime

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