[hn_1419]

Can anyone recommend a way to test my car's heat pump? How would I know if it's working or not?
Still trying to troubleshoot abysmal range in low temperatures.

I looked online for photos but couldn't find anything, how would I know if I actually have one installed? (beyond that line item on my invoice)

 

[John411iD]

Check the refrigerant sticker under the hood: R744 (CO2) means heat-pump is installed. R1234yf refrigerant is used in non-HP vehicles.

Energy consumption on center screen when idling (kWh/h) indicates how much energy goes to battery heating and cabin heating.

 

[serious.sam.4all]

Can anyone recommend a way to test my car's heat pump? How would I know if it's working or not?
Still trying to troubleshoot abysmal range in low temperatures.

I looked online for photos but couldn't find anything, how would I know if I actually have one installed? (beyond that line item on my invoice)

I would like to know that as well, if there is specific way to check how good/bad Heat pump works.
Currently I am getting amazing efficiency with my car for colder weather but I have no Idea if its because of HP or just from my driving habits

This is from Last week. This week its colder and today in -4.5'C I still got 18.8 kWh /100km

 

[serious.sam.4all]

Check the refrigerant sticker under the hood: R744 (CO2) means heat-pump is installed. R1234yf refrigerant is used in non-HP vehicles.

Energy consumption on center screen when idling (kWh/h) indicates how much energy goes to battery heating and cabin heating.

I am not sure but I think in Canada its R744 only, R1234yf is US Specific as Canadian 2021/2 models used to come with HP as standard option and so far, only the cars with HP as an option are shipped, so there is no data on if the cars without HP will be shipped with R744 or R1234yf.

 

[Dougie01]

Energy consumption on center screen when idling (kWh/h) indicates how much energy goes to battery heating and cabin heating.

Can you expand on this a bit? What window shows this?

 

[John411iD]

You can see the screen in post #3

More details of the HVAC and heat-pump:

Air Conditioning and Heat Pump in MEB Vehicles - PDF Free Download

Self Study Program Air Conditioning and Heat Pump in MEB Vehicles Tablet Format Volkswagen Group of America, LLC Volkswagen Academy Published in U.S.A. 2/2021 Course Number SSP Volkswagen

docplayer.net

 

[John411iD]

As a comparison, ID.Buzz 2022 without heat-pump at -15°C / 5°F

 

[hn_1419]

It's labeled R-744. Thank you for this simple suggestion.
Canadian 2022 AWD for others interested.
It 'idles' at about 3.5 kwh/h with the heat on.

 

[John411iD]

It 'idles' at about 3.5 kwh/h with the heat on.

And with the heat off? If you turn off the HVAC, you will see the consumption of the battery PTC-heater.

 

[VW TECHNICIAN]

Using carscanner app you can see various different information on heat pump.

 

[hn_1419]

This morning I checked my idling consumption, 2.2 kwh/h with heat on, 0.4 without
Yesterday was 3.5 kwh/h, same conditions (seat + steering wheel heater level one, nothing else running)

I have yet to take a deep dive into carscanner, this is my first rodeo.
This seems to be the heat pump measurements?

 

[John411iD]

Apart from heatpump your ID.4 has cabin PTC heater and separate battery PTC heater (parameter "PTC heater battery current" is battery heater in amps).

Cabin PTC-heater is first in the line of duty to heat up the cabin in the morning, as heatpump takes a few minutes before it can give any significant heat. The cabin PTC-heater kicks in again briefly whenever you turn up the heat, but it will work continuously on very cold winter trips when heatpump becomes less efficient.

Auxiliary HV consumer power (as in Bjorn's video) is a sum of all such additional energy consumers.

 

[hnewman]

Hi, after an unseasonably warm winter we finally got a typical winter day here, so I did some tests. I don't know if I'm monitoring the proper sensors.

This is my typical morning commute. The battery measurement ticks down so fast it's like I'm drinking it through a straw.
Cabin temperature is 17c, seat and steering wheel heater on low, nothing else running (no defrosters)

I took screenshots through the whole drive, here are the start and finish. Still concerned that my heat pump is not performing as it should (I guess I should be glad I have one at all?)
Infotainment is car idling at the end, 2.2kwh/h is the climate control comsumption at standstill (the car being warm at this point)

 

[SunWizard]

Interesting that your PTC heater is running at 8.25A which is the same draw as mine without heat pump during heating of the battery. Plus you got a big heat pump draw. Here is the draw for my battery heater (nothing else on) at 20F (-7C), showing it runs for 30 minutes to reach 32F. Did you record the data so you can make a similar graph of your PTC battery heater? I hope your battery heater shuts off much sooner than mine due to the heat pump:

 

[VW TECHNICIAN]

PTC heater should be switched to watts values...your was running 3 kw assisting heat pump for cabin heating while heat pump was heating up battery pack.

 

[serious.sam.4all]

Hi, after an unseasonably warm winter we finally got a typical winter day here, so I did some tests. I don't know if I'm monitoring the proper sensors.

This is my typical morning commute. The battery measurement ticks down so fast it's like I'm drinking it through a straw.
Cabin temperature is 17c, seat and steering wheel heater on low, nothing else running (no defrosters)

I took screenshots through the whole drive, here are the start and finish. Still concerned that my heat pump is not performing as it should (I guess I should be glad I have one at all?)
Infotainment is car idling at the end, 2.2kwh/h is the climate control comsumption at standstill (the car being warm at this point)

View attachment 20610 View attachment 20611 View attachment 20612

In Europe they had to refund some money to those who ordered the car with Heat pump as it was not as efficient as they claimed it to be, so our concerns may be true that its not as efficient as they are claiming.

But from the screenshot I can see commute was 10km only with average speed of 15km. May I know what was the temperature outside? Also was the car parked in a closed garage or outside, on the street?

As @John411iD pointed out earlier, initially it will use PTC heater for instant heat and then switch to heat pump. And as @VW TECHNICIAN pointed out, it used Heat pump to heat up battery so overall, it used a lot of energy heating up battery and cabin initially but by the time it reached higher temperature your commute was already over with very high consumption. In winter EVs are bad/less efficient for short commutes IMO.

 

[VW TECHNICIAN]

And to save battery pack SOC in cold weather conditions, you should preheat while connected to the L2 charger.

 

[hnewman]

This morning mine ran at 8.5 for the first 10 minutes, then dropped to 3.5ish for the remainder of the drive, which is the same as your peak level I believe?
It never shuts off.

 

[VW TECHNICIAN]

Second picture represents heat pump running and maintaining 21.5°C at 744 watts multiple by 3 is 2.23 kw heat delivered to the cabin.

 

[VW TECHNICIAN]

This morning mine ran at 8.5 for the first 10 minutes, then dropped to 3.5ish for the remainder of the drive, which is the same as your peak level I believe?
It never shuts off.

View attachment 20613

Outside temperature, cabin set temperature, modules temperature?