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2nd Nissan 1st QQ

Posted: Fri Jan 21, 2022 12:02 pm
by Cbk1006
Hi first post regarding my 2021 QQ. Had it back to the dealers yesterday. I find that the blower blows hot when set at 16deg. Cool at low setting. I have the aircon off with recycled air also off. In 30 years off driving this would be cold air particularly in the winter. Dealer states that I need to run the air con at all times if I want cool air.

For those with a J12, is your blower hot or cold without the aircon on.

TIA

Re: 2nd Nissan 1st QQ

Posted: Fri Jan 21, 2022 12:16 pm
by andy2019
Most cars these days have air con on from the moment you start the car as standard it's great for keeping the windows clear quicker when driveing

Re: 2nd Nissan 1st QQ

Posted: Fri Jan 21, 2022 1:01 pm
by calnorth
The physical diagram of the J11b Heat/Aircon Unit shows that the drawn in air flows as follows:

FLOW PATH: I suspect this will be the same for a J12. Simple.
External Air In via Recirc ON/OFF door
Through Blower
Through Air Filter
Through Evaporator
Onward through Heater Matrix or Bypassed to internal outlets . (Temperature manual or auto controlled)

If Air is hot then air is directed through the heater matrix
If Air is cold with Air Con OFF its either the external air is quite cold or the Air Con is ON?

The j11b gets fairly warm about 20deg C. 16 deg is rather low for being hot? These systems should have been set correctly at production regarding actual and indicated Temp.

Dealer? Aircon perhaps to start with, clear fogging...or direct hot air at w/screen.

Re: 2nd Nissan 1st QQ

Posted: Fri Jan 21, 2022 7:13 pm
by gloucester
Cbk1006 wrote: Fri Jan 21, 2022 12:02 pm
Hi first post regarding my 2021 QQ. Had it back to the dealers yesterday. I find that the blower blows hot when set at 16deg. Cool at low setting. I have the aircon off with recycled air also off. In 30 years off driving this would be cold air particularly in the winter.

Welcome to this forum.

The J12 has climate control and this should work whether AC is on or not. The temperature you set on the dial is not the temperature of the incoming air but the temperature at the thermostat in the cabin (I don't know where that is in a J12).

So if you set the temperature control to 16degC and it's less than 16degC in the car then, yes, it will come out hot, because it's trying to warm the car up.

However if the temperature in the car is higher than 16degC then it should come out cold (i.e. external air temperature which is around 8degC at present).

Try getting the temperature in the car stable at 20degC then switch to 16degC and see if it then comes out cold.

Cbk1006 wrote: Fri Jan 21, 2022 12:02 pm
Dealer states that I need to run the air con at all times if I want cool air.

My experience with dealers is that they don't know much at all. My dealer said stop/start doesn't work when the AC's on - which isn't the case.

Re: 2nd Nissan 1st QQ

Posted: Fri Jan 21, 2022 7:15 pm
by QaiFan
"My experience with dealers is that they don't know much at all. My dealer said stop/start doesn't work when the AC's on - which isn't the case."
I got warnings on the display that AC got prioritized over the Start/Stop system !

Re: 2nd Nissan 1st QQ

Posted: Fri Jan 21, 2022 7:33 pm
by gloucester
Yes it does - but my dealer told me Stop/Start wouldn't work any time AC was on - which simply isn't the case.