GerryAZ
Gold Member
Posts: 1847
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Just bought a 2011 Leaf and loving it!

Tue Jul 03, 2018 5:02 pm

Deolloz wrote:
GerryAZ wrote:
bitmanEV wrote:during the summer is have the switch on OFF to be sure that's OFF 8-)


To keep the heater from running, you want the lowest resistance resistor switched in parallel with the temperature sensor so that would either be position 1 or 2 (not off). The OFF position is for normal heater operation.



Gerry,

Assuming I get the heater control switch kit installed soon ( it already arrived in the mail):

Before installing, do I need to pre-set the HVAC to a specific setting?

After the install, considering its hot here in Austin right now (~100), I will keep the AC on 60 degrees and lowest fan setting once cooled, then what setting do I put the switch at, 0, 1, or 2? Will that change in the winter months?

Thanks.


You want to use Position 1 (330 ohm resistor) to keep heating elements from being energized inadvertently while using A/C. Position 2 (2.2 kohm resistor) would allow the heating elements to be energized, but keep the fluid temperature lower than normal. The OFF position allows the heating elements to heat the fluid normally and will reduce range under certain ambient temperature conditions. Therefore, I recommend Position 1 to avoid inadvertent heating element use unless you need heat. Choose Position 2 or OFF depending upon cabin heat/defrost needs. Use OFF to get maximum heating.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

bitmanEV
Posts: 33
Joined: Tue Aug 23, 2016 10:56 am
Delivery Date: 30 Aug 2016
Location: Redhill, UK

Re: Just bought a 2011 Leaf and loving it!

Wed Jul 04, 2018 12:50 pm

i give up

will try again; in OFF there IS NO HEATING OR POWER CONSUMPTION with my Leaf
Next EV - Byton M-Byte reserved
Nissan Leaf MK1 - Japan build
Renault Zoe R240 - ditched after 8k Miles due crap quality / DS65 WBL
Toyota Rav4 (ICE) SWMBO (rock solid)
Subaru Forester - PX for EV (ODO 200.000+ Miles)
Driving BEV since Dec 2015

Deolloz
Posts: 16
Joined: Thu Jun 14, 2018 2:32 pm
Delivery Date: 12 Jun 2018
Location: Austin, TX, USA.
Contact: Facebook Google+

Re: Just bought a 2011 Leaf and loving it!

Sun Jul 08, 2018 6:00 pm

GerryAZ wrote:You want to use Position 1 (330 ohm resistor) to keep heating elements from being energized inadvertently while using A/C. Position 2 (2.2 kohm resistor) would allow the heating elements to be energized, but keep the fluid temperature lower than normal. The OFF position allows the heating elements to heat the fluid normally and will reduce range under certain ambient temperature conditions. Therefore, I recommend Position 1 to avoid inadvertent heating element use unless you need heat. Choose Position 2 or OFF depending upon cabin heat/defrost needs. Use OFF to get maximum heating.



Gerry,

Since it's around 100 degrees right now in Austin regularly, I will want to have this set at position 1 for all summer, correct? I am -only- running AC in the car at this time.

GerryAZ
Gold Member
Posts: 1847
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Just bought a 2011 Leaf and loving it!

Sun Jul 08, 2018 8:32 pm

Yes, to eliminate the risk of inadvertent heating element operation you should use Position 1 (330 ohm resistor) unless you need heat. It is less likely that the heating elements will be energized during A/C use in our high ambient temperatures than at more moderate temperatures, but why not use Position 1 so there is no chance? I temporarily connected a 330 ohm resistor in place of the sensor and was planning to build a permanent circuit with switches and relays, but the car met its demise before I made permanent modifications. I like the design of the plug-and-play kit and would have purchased one if my car had not been totaled.

I recommend that you do not use the OFF Position (enables full heat) unless you need heat and/or defrost and you are able to accept the associated power consumption and range reduction. Position 2 is a good alternative to have some heat with a less severe range impact.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

Deolloz
Posts: 16
Joined: Thu Jun 14, 2018 2:32 pm
Delivery Date: 12 Jun 2018
Location: Austin, TX, USA.
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Re: Just bought a 2011 Leaf and loving it!

Sun Jul 22, 2018 10:09 am

GerryAZ wrote:Yes, to eliminate the risk of inadvertent heating element operation you should use Position 1 (330 ohm resistor) unless you need heat. It is less likely that the heating elements will be energized during A/C use in our high ambient temperatures than at more moderate temperatures, but why not use Position 1 so there is no chance? I temporarily connected a 330 ohm resistor in place of the sensor and was planning to build a permanent circuit with switches and relays, but the car met its demise before I made permanent modifications. I like the design of the plug-and-play kit and would have purchased one if my car had not been totaled.

I recommend that you do not use the OFF Position (enables full heat) unless you need heat and/or defrost and you are able to accept the associated power consumption and range reduction. Position 2 is a good alternative to have some heat with a less severe range impact.


Gerry, with a little help from my brother, I FINALLY got the kit installed problem free. And with your suggestions, I left it in Position 1, and I actually did not drill a hole or anything (yet), I just stuffed it down into the compartment where I thought it would be out of the way.

I would like to thank you for the advice.

My next couple of questions are about the AC element in general...

1) My AC seems to be randomly "cutting out" and going only to fan, not sure if/when/why. I usually drive in Eco Mode, and it's VERY hot here these days (~100). could it be that the battery is over-heating, although the temperature bars on the instrument control panel never seem outrageous. Any possible explanation/reason/fix for this (or maybe the installation of the kit will help?)

2) How do I properly cool the vehicle while its still plugged in? Many times, I feel it would be helpful for me walk up to the car while it's charging in/plugged in, and go ahead and blast the AC for a little bit to cool it down. HOwever, whenever I try and turn the car on with it plugged in, I'm never sure if the car actually fully turns on or if it's just in "accesory" mode... I can never feel cold air coming through no matter how many times I press the ignition button. Bear in mind, I don't have any of the 3g components working on the vehicle, so no remote connection to it via Car-wings, etc.

GerryAZ
Gold Member
Posts: 1847
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Just bought a 2011 Leaf and loving it!

Sun Jul 22, 2018 2:40 pm

ECO mode reduces the maximum power draw of the A/C (or heater) so I never use it. High battery temperature has no impact on HVAC operation. The A/C compressor will cut off for a few minutes if the evaporator temperature gets close to freezing so make sure the cabin air filter is not restricting air flow and use moderate to high blower speeds for best cooling.

The best way to cool while plugged in is to use the EV Connect (CarWings) system to start cooling remotely, but you need the 3G modem upgrade and an account (no cost) with Nissan. You can also use climate control timer to activate HVAC system while plugged in if your schedule is consistent. I think you can start climate control at the car while it is plugged in if the SOC is at least 25% using the following procedure:
1. Place foot on brake.
2. Press ON button once (dash will show message iindicating car is plugged in and not ready to drive), but HVAC should work.
3. Turn car OFF, unplug, and then turn car ON when ready to drive.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

User avatar
Marktm
Gold Member
Posts: 421
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737
Location: Houston, TX

Re: Just bought a 2011 Leaf and loving it!

Sun Jul 22, 2018 3:10 pm

Deolloz wrote:
1) My AC seems to be randomly "cutting out" and going only to fan, not sure if/when/why. I usually drive in Eco Mode, and it's VERY hot here these days (~100). could it be that the battery is over-heating, although the temperature bars on the instrument control panel never seem outrageous. Any possible explanation/reason/fix for this (or maybe the installation of the kit will help?)


I've had the same issues in Houston - just ordered a new cabin filter (Gerry's recommendation) - we'll see if it stops the "cutting out". It has never stopped long enough to be very uncomfortable. A good way to tell immediately if the compressor is back on is to watch the "energy" gauges - the climate control power levels will show when the compressor starts up again. I believe the fan also shows on this gauge as it goes to the highest levels when the fan is on high blow (probably not significant though). What is incredible to me is that when stabilized, the A/C only draws 200 to 500 watts to keep the driver/passenger cool. Contrast to an ICE vehicle that pulls significant HP to keep the same cool!
2012 Leaf SL; 36,000 miles. Battery replaced November 1st, 2016.

Deolloz
Posts: 16
Joined: Thu Jun 14, 2018 2:32 pm
Delivery Date: 12 Jun 2018
Location: Austin, TX, USA.
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Re: Just bought a 2011 Leaf and loving it!

Mon Jul 23, 2018 1:55 pm

Marktm wrote:
Deolloz wrote:
1) My AC seems to be randomly "cutting out" and going only to fan, not sure if/when/why. I usually drive in Eco Mode, and it's VERY hot here these days (~100). could it be that the battery is over-heating, although the temperature bars on the instrument control panel never seem outrageous. Any possible explanation/reason/fix for this (or maybe the installation of the kit will help?)


I've had the same issues in Houston - just ordered a new cabin filter (Gerry's recommendation) - we'll see if it stops the "cutting out". It has never stopped long enough to be very uncomfortable. A good way to tell immediately if the compressor is back on is to watch the "energy" gauges - the climate control power levels will show when the compressor starts up again. I believe the fan also shows on this gauge as it goes to the highest levels when the fan is on high blow (probably not significant though). What is incredible to me is that when stabilized, the A/C only draws 200 to 500 watts to keep the driver/passenger cool. Contrast to an ICE vehicle that pulls significant HP to keep the same cool!


Mark, can you tell me how to engage the "energy gauges," I assume this is in the stereo/navigation unit somewhere, but I've never pulled them up. I have a 2011.

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Marktm
Gold Member
Posts: 421
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737
Location: Houston, TX

Re: Just bought a 2011 Leaf and loving it!

Mon Jul 23, 2018 3:38 pm

On my 2012, there is a radio button with a blue "energy" symbol that is directly below the "scan - tune" buttons (right, bottom area of the Nav buttons). The "energy"menu will come up on the screen. Hit the right top menu icon and the gauges should come - very interesting data.
2012 Leaf SL; 36,000 miles. Battery replaced November 1st, 2016.

Deolloz
Posts: 16
Joined: Thu Jun 14, 2018 2:32 pm
Delivery Date: 12 Jun 2018
Location: Austin, TX, USA.
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Re: Just bought a 2011 Leaf and loving it!

Wed Jul 25, 2018 4:46 pm

Two additional questions...

So, I lost a bar (8 --> 7) within the span of about 1.5 months, in 100 degree weather, with maybe only 2-3k miles! Since i'm a total noob to the EV world (as of two months ago), I probably wasn't treating the battery right. I will have to go back to the drawing board I guess. Since my SOH according to LeafSpy is now around 52%, it's difficult for me to only charge to 80% capacity, because that only gives me about 25-30 miles. I've been continuing to charge it to full, and that may have caused the quick loss of a bar (and the ~100 degree heat here this summer). However, I can actually stop charging before it gets to full using the ChargePoint app, even without CarWings setup. Is there a good "write-up" of how to properly care for the battery with advise, tips, and tricks? I believe I had found one here: "https://www.clippercreek.com/extend-life-ev-battery/" ...

Second, what happens when the the car is active and "on," and I plug it straight in? Will it turn off? Could use this as a method of cooling the cars temperature before getting into it, and thereby using less of the battery power to do that?

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