WigWoo1
Posts: 9
Joined: Fri Jun 09, 2017 6:49 pm
Delivery Date: 03 May 2017

Heater problem?

Fri Jun 09, 2017 6:51 pm

Hey everybody I'm new to this forum and I'm ready to start contributing but first I have a question. It is 65 degrees outside and I am trying to run my heater on full blast it initially starts up by going up to 3 kilowatts of energy usage and then it goes down to 0-.5kw of energy. I had the heater set to 90 degrees and it barely blows somewhat warm air when I'm trying to get it to blow its hottest. Does the heater not work above a certain outside temperature or is there something wrong. I have a 2013 SV model. Thank you

WigWoo1
Posts: 9
Joined: Fri Jun 09, 2017 6:49 pm
Delivery Date: 03 May 2017

Re: Heater problem?

Fri Jun 09, 2017 6:52 pm

I also forgot to mention my leaf only has 8000 miles on it so I feel like it's not old enough to fail

User avatar
DNAinaGoodWay
Gold Member
Posts: 2686
Joined: Mon Dec 17, 2012 1:43 am
Delivery Date: 03 Dec 2012
Leaf Number: 23156
Location: Central Massachusetts

Re: Heater problem?

Fri Jun 09, 2017 8:00 pm

Hi WigWoo1, welcome to the forum.

Interesting question. What fan speed is it on? If you set it at 90 and use a low fan speed, is it warmer?

You have a heat pump, so it may be related to outside temperature, but it's been a while since I read the manual.
'12 SL last reading @ 2 yr, 22k, 260 GIDs, 62.35 Ahr

'15 SV w/QC, Mfd 5/14, Leased 8/14, 292 GIDs, 64.38 Ahr when new

@ 25 months, 25k, 267 GID, 56.88 AHr
@ 36 months, 34k, 270 GID, 57.49 AHr


6.72 kW Array

BuckMkII
Posts: 91
Joined: Sat May 06, 2017 8:04 am
Location: Seattle

Re: Heater problem?

Sat Jun 10, 2017 6:52 am

This is a weird sitch. When the outside temperature is high, the heat pump should have *less* difficulty pumping heat into the car, unless the software won't let it run above a certain outside temperature (which I guess is what you are suggesting by reading the manual for an explanation).

Maybe try running it in defog mode, with the heat and AC both on? I'm not even sure how that works (pathetic noob who needs to read the manual), but it seems like what it *should* be doing is running the air through the cold (AC) coil to dehumidify it, then through the hot coil to warm it (so BOTH sides of the heat pump system are working on air bound for the cabin, not the usual where one is outside exchanging heat with the exterior), but if the system doesn't route that way, it might use the cold heat pump coil (AC mode) followed by the resistance heater, which would be a real energy hog. When I turn on my defogger, I smell something like a hot resistance element, so I'm betting on the latter mode of operation.
2013 SV no QC, manufactured July 2013
car grew up in San Jose CA, purchased 5/31/17 in Seattle
on 6/16/17 : AHr = 56.4; SOH = 86%; Hx = 84.3; ODO = 39,250

WigWoo1
Posts: 9
Joined: Fri Jun 09, 2017 6:49 pm
Delivery Date: 03 May 2017

Re: Heater problem?

Sun Jun 11, 2017 12:04 pm

I run with the fan speed at maximum and turning the fan speed lower doesn't change the temperature of the air. Also when I turn the AC mode on it does help for defogging but it actually makes the air cooler even when it's set to 90. I was even having the same problem at 55 degrees outside so I'm not sure if it's a temperature thing or not

LeftieBiker
Posts: 6559
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Heater problem?

Sun Jun 11, 2017 2:19 pm

I have a theory, but I'm not at all sure it's correct. Your leaf has both a heatpump and a resistance (PTC) heater. I think that your PTC heater has failed, and the climate control, instead of having the heatpump take up the load, is still "expecting" it to provide initial heating, keeping the heatpump throttled back. It makes little sense, but then so does this situation.
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.

GerryAZ
Gold Member
Posts: 1339
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Heater problem?

Sun Jun 11, 2017 2:50 pm

I suspect that the controls look at the ambient temperature and decide it is warm enough to use heat pump only without running the resistance heater. You can confirm that the resistance heater is working by setting the remote climate control temperature set point as high as possible (90 degrees F, I think) in the CarWingw/EV Connect menus on the navigation unit. After setting the set point, start climate control while the car is plugged in. I found that remote or timer climate control operation while plugged in will always run the resistance heater (probably to minimize noise from the fan and save wear on the compressor). You should get hot air discharge from the vents if the resistance heater is working during remote climate control operation.

If it gets down to anywhere near 65 F tonight, I will try running the heater for a couple minutes in the morning to see what power draw and discharge temperature I get on my 2015 SL.
Last edited by GerryAZ on Fri Jun 16, 2017 1:49 am, edited 3 times in total.
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

WigWoo1
Posts: 9
Joined: Fri Jun 09, 2017 6:49 pm
Delivery Date: 03 May 2017

Re: Heater problem?

Sun Jun 11, 2017 3:50 pm

Usually the heater function the exact same way if I'm plugged into a charger. I can't use the car wings that because the 2G and the car has been shut down by AT&T. Does any of your Leafs blow hot air when you crank up the heat all the way and what is your kilowatt readings after a few minutes of running

GerryAZ
Gold Member
Posts: 1339
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Heater problem?

Sun Jun 11, 2017 9:06 pm

If you manually turn the heater on while plugged in, the car will run the heater the same as if you were driving (heat pump preferred). It needs to be climate control timer start (or remote start via EV Connect) to force the resistance heater to run. You can set the climate control timer and associated set point through the CarWings (EV Connect) menus on the navigation screen even if the car cannot connect via cellular. After setting the climate control timer, make sure the car is off and plugged in before the start time. The climate control will start at the set time and use the resistance heater. If the resistance heater does not function, I think the car will then use the heat pump system to try to heat during the timed period.
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

GerryAZ
Gold Member
Posts: 1339
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Heater problem?

Fri Jun 16, 2017 6:15 pm

The coldest temperature I had last night was 75 degrees F. My car did the same as you noted in your original post when I tried the heater set to 90 F. I know my resistance eater is OK so I suspect the HVAC controls decide to use heat pump only when the ambient temperature is high.
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

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