Air recirculation defaulting to ON

[goltho]

Anyone know the criteria which the car applies to setting the air recirculation on or off when starting, and is it alterable with TOAF? Thanks.

Dougie.

[suzublu]

It's to do with the outside temperature v interior I think?
Just turn it off when you get in 😎
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[goltho]

Originally Posted by suzublu

It's to do with the outside temperature v interior I think?
Just turn it off when you get in ��

I know the rear screen demister comes on at <10 deg C but haven't found evidence of temperature determining interior recirc?

The green light on the switch isn't bright enough on a bright day to confirm whether it's on or not, so I have to faff about every time I start the car! That's what's driving me nuts.

Dougie.

[suzublu]

It's in the manual

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[goltho]

Originally Posted by suzublu

It's in the manual

Thanks for that. So if I press & hold for 2 seconds, will it turn the auto-recirc process off for ever or just during that ignition cycle?

Dougie.

[SD1too]

Originally Posted by goltho

So if I press & hold for 2 seconds, will it turn the auto-recirc process off for ever or just during that ignition cycle?

Hi Dougie,

I understand the handbook's wording to mean that if you press and hold for 2 seconds it will override the automatic return to fresh air after 4 minutes recirculation, in other words exactly the opposite of what you are trying to achieve. But the best way is to try it and see what happens.

In response to your original question about the criteria governing automatic recirculation, RAVE doesn't reveal the programming decisions behind this but I think that suzublu is on the right lines since mine always triggers when the interior is considerably hotter than the exterior. This, of course, is ridiculous because in those conditions it is preferable initially to draw in less hot air from outside the car until cooling is felt and only then should recirculation be selected!

As an alternative to the LED in the button Dougie, there's a symbol in the LCD display which indicates whether fresh air or recirculation is selected. Is that easier to see?

Simon

[goltho]

Originally Posted by SD1too

Hi Dougie,

I understand the handbook's wording to mean that if you press and hold for 2 seconds it will override the automatic return to fresh air after 4 minutes recirculation, in other words exactly the opposite of what you are trying to achieve. But the best way is to try it and see what happens.

Hi Simon,

Thanks for that - hope you're well. I've not in fact monitored after starting the car, presuming perhaps wrongly that it would remain on recirculation, so I will do that.

Originally Posted by SD1too

As an alternative to the LED in the button Dougie, there's a symbol in the LCD display which indicates whether fresh air or recirculation is selected. Is that easier to see?

Arguably maybe. One way or the other, I can manage to turn it off but I wanted to understand its default operation so as to thwart it. It may turn off after 4 minutes if I understand the manual correctly; if so I can live with that. Thanks.

Dougie.

[SD1too]

Originally Posted by goltho

... I wanted to understand its default operation so as to thwart it.

Automatic recirculation is a nuisance in the summer and activation of the HRW when it's not needed is a nuisance in the winter.

I've also found that I need to change the temperature selection depending upon many other factors so even that needs an element of manual control!

Simon