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Thread: ECC air conditioning delay

  1. #1
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    Default ECC air conditioning delay

    Hi all,

    I've recently noticed a curiosity with my air conditioning and I'm wondering what the explanation may be...

    (Pre-condition: car cold, outside temperature hot, eg. 35° C)
    If I set the ECC to "Lo" ie. unregulated cold, the car will start blowing out reasonably cold air. But it's only after about fifteen minutes that the car suddenly changes to blowing really, really cold air. It's like the car waits until the engine has warmed up before it will fully operate the compressor. I'm not talking about the fan speed - it stays on full from start up.

    Does anyone know what the ECC waits for? (Does my explanation make sense???)

    Thanks.

  2. #2
    Full Member Big Sig's Avatar
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    Sounds like its short of gas TBH, get it checked. If you lift the bonnet and listen while someone turns the A/C on and off you should hear a change in engine speed and the A/C compressor engage. The A/C is turned off in "ECO" mode.
    Now I need a turbo to keep up!

  3. #3
    Regular Member ukanalyst's Avatar
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    Mine does this too .. as it's ECC and it works on temperatures (rather than standard air con which is simply hot or cold) and it knows the temperature of the air it can put into the cabin is too warm it will only feed a smaller amount in until the compressor is up to full cooling capacity.

    Dave

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    Regular Member sig63's Avatar
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    Vehicle : Opel Insignia

    Trim : Cosmo

    Engine : 2.0 CDTI

    Year : 2011

    Default

    Like Ukanalyst said... and a comparable delay happens if you want it to heat the car but the engine is still cold... what is at the moment more the case over here ... 35°C

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    On a Sabbatical VauxVeteran's Avatar
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    ECC is a bit hit and miss on any car tbh, it's real design strength is when you set and forget when going on a 100 mile + journey, gives it time to fully adjust, as the others have said it reads from sensors rather than the just control panel, when it's used on short journeys it has to overcome several variables, two in particular, opening of doors and windows, and the sensor wont get it right until the sensor decides it's right, I prefer normal A/C myself, with that you get a constant setting, I remember my 1st Omega CDX I had with it, if the sensor decided the cabin had got a bit warmer it'd blow cold air out to re-regulate the temp, not nice on a cold day when all you really wanted was to turn it down one notch, and when it decided the windscreen was misted, Whoooooa it blow like a pornstar.

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    Default

    Thanks everyone.

    Quote Originally Posted by sig63 View Post
    Like Ukanalyst said... and a comparable delay happens if you want it to heat the car but the engine is still cold... what is at the moment more the case over here ... 35°C
    I guess you're not getting to many 35° days at the moment

    I just realised that it might be that the ECC suddenly changes the air distribution. I'll have to try it with manual air distribution and fan speed to see if that makes any difference.

    Quote Originally Posted by VauxVeteran View Post
    ECC is a bit hit and miss on any car tbh, it's real design strength is when you set and forget when going on a 100 mile + journey, gives it time to fully adjust, as the others have said it reads from sensors rather than the just control panel, when it's used on short journeys it has to overcome several variables, two in particular, opening of doors and windows, and the sensor wont get it right until the sensor decides it's right, I prefer normal A/C myself, with that you get a constant setting, I remember my 1st Omega CDX I had with it, if the sensor decided the cabin had got a bit warmer it'd blow cold air out to re-regulate the temp, not nice on a cold day when all you really wanted was to turn it down one notch, and when it decided the windscreen was misted, Whoooooa it blow like a pornstar.
    This is the first car I've had with ECC and I'm pretty happy with it. I don't like the user interface - changing the air distribution or compressor on/off setting is way too complicated - but otherwise I think it's quite good.

    It would be nice if the ECC could learn that the quickest way to cool a hot car is to open all the windows for 30 seconds or so...

  7. #7
    Regular Member ukanalyst's Avatar
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    Quote Originally Posted by stevedee3 View Post
    It would be nice if the ECC could learn that the quickest way to cool a hot car is to open all the windows for 30 seconds or so...
    It does ... you just need to help it along by holding down the door unlock button on the keyfob 30 seconds before you get in

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