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Air con (fan noise)

Bobby Mac

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I have noticed a wind whistle which I initially thought was coming from outside. Then I turned the air con fan off to have a better listen and it stopped! Yes, from about position 2 on, there is remote, but annoying (wind) whistle. Anyone else had the same, and if so, any fixes?
 

chrsbe

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Air condition has been fixed.. Running like a charm..

in the end it was not the air conditioner. An air-lock in ancillary system caused an overheating in an sensor causing the air con to be turned off and also the cooling fan to run. It just happened that the Ineos engineer was on-site that suggested the fix. It now in the Ineos "data bank".
Hi would you please further more specify what caused the problem and which components were affected and changed?
 
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Skydance

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I have noticed a wind whistle which I initially thought was coming from outside. Then I turned the air con fan off to have a better listen and it stopped! Yes, from about position 2 on, there is remote, but annoying (wind) whistle. Anyone else had the same, and if so, any fixes?
Mines got this too. Annoying whistling noise whilst driving on the motorway from 50 mph especially if it’s windy. If you turn off the auto climate control, the whistling disappears. Also on highest fan setting, annoying high pitch noise. Been told Ineos is looking into it. My guess the heat fan resistor is faulty (hedgehog) and the control unit which controls the flaps in the hvac system is slow, lazy and not closing properly. Sometimes the windscreen demister kicks in 10 seconds later.
 
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Clark Kent

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Hi would you please further more specify what caused the problem and which components were affected and changed?

I have a working theory on this while waiting to see if @cheeters can add anything else.

At a PTO2 drive day I was told by an Ineos rep that the air conditioning system uses a engine coolant based heat exchanger instead of a standard condenser core in front of the radiator. I can't easily see a front mounted condenser so I went digging around. I think this (pic) is the A/C heat exchanger, mounted on the left/near side of the engine. It has A/C pressure lines and coolant hoses. The round canister could be the receiver dryer body. Can anyone confirm this is the A/C heat exchanger (condenser)?

Based on what @cheeters shared above: "An air-lock in ancillary system caused an overheating in an sensor causing the air con to be turned off and also the cooling fan to run."; an airlock in the coolant sub-circuit would degrade A/C operation because the gas temp on the outlet side would be high. The responsible computer would first try to compensate by running the cooling fan, but if that didn't resolve the overheat condition the A/C would probably be shut down to prioritise and protect engine cooling.

Eliminate the airlock and the operating temperature and A/C operation would return to normal.

Maybe...:unsure:
 

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James

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I have a working theory on this while waiting to see if @cheeters can add anything else.

At a PTO2 drive day I was told by an Ineos rep that the air conditioning system uses a engine coolant based heat exchanger instead of a standard condenser core in front of the radiator. I can't easily see a front mounted condenser so I went digging around. I think this (pic) is the A/C heat exchanger, mounted on the left/near side of the engine. It has A/C pressure lines and coolant hoses. The round canister could be the receiver dryer body. Can anyone confirm this is the A/C heat exchanger (condenser)?

Based on what @cheeters shared above: "An air-lock in ancillary system caused an overheating in an sensor causing the air con to be turned off and also the cooling fan to run."; an airlock in the coolant sub-circuit would degrade A/C operation because the gas temp on the outlet side would be high. The responsible computer would first try to compensate by running the cooling fan, but if that didn't resolve the overheat condition the A/C would probably be shut down to prioritise and protect engine cooling.

Eliminate the airlock and the operating temperature and A/C operation would return to normal.

Maybe...:unsure:
You just have to love a forum with properly operating brain systems… lovely bit of reasoning.
 
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chrsbe

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I have a working theory on this while waiting to see if @cheeters can add anything else.

At a PTO2 drive day I was told by an Ineos rep that the air conditioning system uses a engine coolant based heat exchanger instead of a standard condenser core in front of the radiator. I can't easily see a front mounted condenser so I went digging around. I think this (pic) is the A/C heat exchanger, mounted on the left/near side of the engine. It has A/C pressure lines and coolant hoses. The round canister could be the receiver dryer body. Can anyone confirm this is the A/C heat exchanger (condenser)?

Based on what @cheeters shared above: "An air-lock in ancillary system caused an overheating in an sensor causing the air con to be turned off and also the cooling fan to run."; an airlock in the coolant sub-circuit would degrade A/C operation because the gas temp on the outlet side would be high. The responsible computer would first try to compensate by running the cooling fan, but if that didn't resolve the overheat condition the A/C would probably be shut down to prioritise and protect engine cooling.

Eliminate the airlock and the operating temperature and A/C operation would return to normal.

Maybe...:unsure:
It all comes down to that mysterious air lock. Has anyone a clue where it is?
 
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Clark Kent

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It all comes down to that mysterious air lock. Has anyone a clue where it is?
Well the Ineos engineer that found it would know but I doubt that info has been shared outside Ineos Tech Support. I'm completely guessing here, but the A/C heat exchanger sits at the high point of a coolant sub-circuit loop so there is potential for trapped air in the heat exchanger during filling of the cooling system. Follow the coolant hoses and you'll see what I mean.

Google B57 or B58 Engine Training Manual. In the pdf you find, look in Section 5 Cooling System. You will see that bleeding the cooling system on these engines is moderately complex. That's for BMW vehicles with standard A/C systems. Ineos may have an additional procedure to bleed the A/C and heater circuits. Have a chat to your agent about it.
 
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On older cars that usually means some sort of obstruction: e.g. leaf but, on a new car it's very difficult for a foreign object to get past a dual filtration system
Everything is possible, this is from Land Rover Discovery 2 :rolleyes:

IMG_3523.JPG
 
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FieldMonster

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My dealer told me my annoying-fan-noise-at-the-top-fan-speed is ‘normal’ and a known problem that they all have. I was a bit surprised (until I found the threads here which at least make me feel less alone!). It does seem a bit shoddy.
 
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Skydance

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My dealer told me my annoying-fan-noise-at-the-top-fan-speed is ‘normal’ and a known problem that they all have. I was a bit surprised (until I found the threads here which at least make me feel less alone!). It does seem a bit shoddy.
Are witnessing a high pitch frequency on max fan speed only?
 
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rovie

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My dealer told me my annoying-fan-noise-at-the-top-fan-speed is ‘normal’ and a known problem that they all have. I was a bit surprised (until I found the threads here which at least make me feel less alone!). It does seem a bit shoddy.
Yes, that bothers me too, like many others.
When I park it in my shed, you'd think it was a Hawker Siddeley Harrier. It is comparable, I saw it live at our airfield many years ago.

I'll be cheeky and say that it could have been done better, that's the so-called German art of engineering.
:ROFLMAO:
 
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OGrid

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Just got my Gren back from the dealer after having the air conditioner checked out for not blowing cold air at all (summer here at the moment).

They were able to fix it, but required a complete re-gassing of the air con unit and a bleed and fill of the air con coolant system as well.

The good news is that this has resulted in both cold air and a significant reduction in the AC fan use and noise.

I no longer sound like an aircraft ready for takeoff at the lights constantly and the fan stops very quickly when I stop the engine and remove the keys.
 
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OGrid

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Just got my Gren back from the dealer after having the air conditioner checked out for not blowing cold air at all (summer here at the moment).

They were able to fix it, but required a complete re-gassing of the air con unit and a bleed and fill of the air con coolant system as well.

The good news is that this has resulted in both cold air and a significant reduction in the AC fan use and noise.

I no longer sound like an aircraft ready for takeoff at the lights constantly and the fan stops very quickly when I stop the engine and remove the keys.
In the week since my AC was fixed it continues to perform as it should.

The downside though is that the passengers footwell (RHD) soon becomes rather wet underfoot. Not a sprinkling of water kind of wet, but get out the towel wet after 1hr of driving.

On the flip side, the excessive fan usage and its associated noise has been completely eradicated since the re-gassing and AC coolant was bled.
 
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Barney

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I have noticed a wind whistle which I initially thought was coming from outside. Then I turned the air con fan off to have a better listen and it stopped! Yes, from about position 2 on, there is remote, but annoying (wind) whistle. Anyone else had the same, and if so, any fixes?
I have it too, but it wasn't there from the start.
 
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Same noise coming from the front right radiator I believe. Mine is only when it’s above 90 degrees outside and I have my AC on at any speed. It’s driving me crazy. Very loud like a turbine engine. I hope there is a fix coming.
 
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