ebill3
Well-known member
Yes, the defog/foot method is great for defogging, but there is the dark side of cold feet.
Bill
Bill
ebill3 said:Yes, the defog/foot method is great for defogging, but there is the dark side of cold feet.
Bill
jclemens said:There is a little vent under the start button, that is where the sensor is. If/When i get a 12v heater, i was going to try this, but please post your result here if you can get it to avoid turning on the main heat.
edatoakrun said:Even simpler. The next cold and wet day, I'll try using my 12 V accessory heater. It should be able to heat up that area above 60 degrees, to "fool" the sensor, quite easily.
Could you more precisely state the sensor location(s?), for those without the service manual?
N1ghtrider said:Is there any way to just get the fan to run without the climate control kicking-in automatically? :?:
TonyWilliams said:N1ghtrider said:Is there any way to just get the fan to run without the climate control kicking-in automatically? :?:
No
Ingineer said:Looks like I'll be able to Demo the upgrade at next weekend's BayLEAFs meeting in San Francisco. I should also be able to offer upgrades to a few people that want to become the first to receive it. (I can assist with the installation after the meeting if you like.)
-Phil
TomT said:Do we have a price yet? What is involved in the install?
Sounds great, but (sorry!) - one known issue is that the heater will come on with the A/C when the system isn't working hard to cool. You can see this typically when ambient temps are 65-75* and the interior of the car has cooled off already. HVAC will register 500-750W or so, but if you drop the temperature a degree you will actually see power draw go down.Ingineer said:The final version of the upgrade differs a little from the prototype, you will now NOT have heater operation, regardless of set temperature / car temperature, unless at least one of these is true:
1. A/C button is illuminated.
2. Rear Defroster is on.
3. Climate Control timer engages.
I found that controlling the heater with the A/C button is the best and most intuitive.
Yes, I did not see this happen as you say when I had the Leaf fully instrumented. It will sometimes run the A/C for dehumidification when the heat (especially for defog) is on, but I've *never* seen it run the heater when the A/C is called for! I had instrumentation in the car to tell me the current heater PWM values, and I did not see this. I suspect for whatever reason, this is actually just the A/C running at a low idle to keep the system's high side/low side pressures at their optimum balance to ensure the expansion valve is doing the most efficient transfer. Disturbing the temperature may make the system back off for a bit to reset the algorithms. If you can come up with an exact and reproducible set of test parameters, I'll be happy to test it both the PTC duty cycle as well as the compressors and see if I can confirm it. Maybe it's due to our fair Bay Area weather here!drees said:Sounds great, but (sorry!) - one known issue is that the heater will come on with the A/C when the system isn't working hard to cool. You can see this typically when ambient temps are 65-75* and the interior of the car has cooled off already. HVAC will register 500-750W or so, but if you drop the temperature a degree you will actually see power draw go down.
I presume that this is done to help dehumidify the air, so humidity levels probably play a role here as well.
It doesn't sound like there's a way to keep the heater from coming on in this situation where you want a small amount of A/C but no extra dehumidification with your mod? Am I missing something?
I did a DIY install of seat heaters in my 2011, and I too find that most of the time I can get by by with the A/C button off, but I like a little fresh air on my face. I like that I can adjust the fan and don't have to worry about anything turning on I don't authorize. Wish I could easily add that wheel heater though! :mrgreen:dgpcolorado said:Definitely interested in this upgrade; I wish I lived close enough to be one of your first guinea pigs! I agree that the AC button is an intuitive choice for the main heater control and have often wished that pushing it would knock out the heater as well as AC.
Thanks to preheating and the steering wheel/seat heaters, I am finding that I almost never need the cabin heater while driving save for occasional defogging (and that could likely be accomplished if I could just blow unheated air on the windshield/side windows).
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