ECC blowing hot air all the time ?.

Birchall said:
No offence taken, this is a healthy debate, but as Spike just said the ECON button does not switch the AC compressor off on the A2, it keeps it running but at a low power.

Hence the confusion.

Steve B
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This thread is about the "ECC blowing hot air all the time" and you wrote that the ECON would not have anything to do with that as it only control the pre-heater.
The Spike gave an excellent detailed explanation about the logic behind the ECON button, and that it will for preventive maintenance purposes engage the compressor for short cycles.
This will not change the fact that the compressor, for an Temperature Control view, is disengaged! :eek:
 
I don't think extending this debate is helping the OP or others viewing the thread.

I will leave it as Spike has clarified and no further comment from me is required on the subject of the ECON button, Spike is technically much more knowledgeable than me..

I tried to respond in a helpful way and tried to clarify an often misunderstood area, based on information that has been mentioned on here many times about the Econ button.

Sorry if I have added confusion that was not my intention (obviously).

Steve B
 
That's true! :) My intention was not to point fingers, only to establish a baseline for further fault diagnostics.
I have been working for many years with the worlds most complex systems (Telecom) with a combination of technical and business analytics and sometimes I get carried away! Right now I am relaxing by studying the Electrical diagrams for the A2.
 
spike said:
On diesel models the supplementary heater can also be switched off by briefly pressing the button. This helps save fuel.
Click to expand...

Just to clarify this further (if there's any doubt!), this means that when ECON is lit, the supplementary heater (whether diesel or electric) is off. As for OFF or 2%, as far as A/C is concerned, I think they mean the same thing!

RAB
 
I think i must have a similar problem to yourself Steve because its working okay today, phew !. The car is haunted though because the front windows went down on their own whilst on the drive this morning - very odd ?. :).
I also went to my local dealer dressed as a cowboy - walked into the parts dept and said ,"Audi". Nooo, thats bad, sorry !.
 
The windows can drop if you lean on the key fob whilst it is in your pocket. Mine did the same a few days ago!
 
Special edition said:
I think i must have a similar problem to yourself Steve because its working okay today, phew !. !.
Click to expand...

Yes, it does sound like it. But it might also be the cycling of the system you were doing yesterday too.

But fingers crossed that it either doesn't return or does not return often enough to warrant tackling the dreaded A?C sensor.

Steve B
 
Hi new to the forum and just purchased our first a2. I have the same problem and nothing has fixed it!! Was there a defo answer to this thread? Or any part numbers Thanxs guys
 
NinjaA2 said:
Hi new to the forum and just purchased our first a2. I have the same problem and nothing has fixed it!! Was there a defo answer to this thread? Or any part numbers Thanxs guys
Click to expand...

If it is blowing hot all of the time and wont adjust down at all, then you need to get the car scanned to see if it is a problem with the heater flaps or the sensor.

Without out the VCDS scan it would not be possible to pinpoint the cause?

Is there anyone close enough to you with the cable and software to do a scan to help you? That is a question aimed at members with VCDS in your area. I don't recognise the Post code SS is that South Shields or something?

Steve B
 
I still get this Flaps Intermitent Fault code too, but everything works fine.

I'm keeping it at 21-22 Celsius, blower to the front screen, blower to the floor. Never use those central blowers, auto or econ, in any car.

Last summer my wife complained that her feet were freezing when it was at 19 Celsius. I reminded her about the trips in my '80 Golf and 100 Celsius inside during summer :)

Cheers,
D
 
i have read up alot on this and see somewhere that might have summin to do with the rad fan not working???
i have been out and checked and have not seen the rad fan going even when car is hot also car has climate control and ive seen the fan meant to run at reduced speed but mine dosent do this... wuld this be a cause for concern
 
NinjaA2 said:
i have read up alot on this and see somewhere that might have summin to do with the rad fan not working???
i have been out and checked and have not seen the rad fan going even when car is hot also car has climate control and ive seen the fan meant to run at reduced speed but mine dosent do this... wuld this be a cause for concern
Click to expand...

With the air con running the radiator fan is supposed to be running too. But the only impact of that not turning would be the engine overheating. It MIGHT be an indication that all is not well and the climate system is not working, have you checked the fuses that relate to the climate control too. That is just me clutching at straws, but I always prefer to check all of the free of charge items first before any money or time is wasted.

Steve B
 
Birchall said:
With the air con running the radiator fan is supposed to be running too. But the only impact of that not turning would be the engine overheating. It MIGHT be an indication that all is not well and the climate system is not working, have you checked the fuses that relate to the climate control too. That is just me clutching at straws, but I always prefer to check all of the free of charge items first before any money or time is wasted.

Steve B
Click to expand...
good call ill start there then
 
Hi Guys,

Funny how these sorts of things show themselves when the weather warms up.

I've got a similar problem with my A2 in that it's fine supplying hot air, but no chilled air - only cooler air at ambient temperature. This is with Auto engaged. All flaps seem to be working as they direct air to the correct locations when using the climate controls.

I've had a dive under the bonnet to check the compressor. I can turn the inner part of the clutch about a quarter turn (or a little more) before engagement in either direction, but not completely around. When I've set the climate control to Lo and checked, there's no rotation of the inner compressor drive whatsoever. I've taken a video of what's happening (or not in this case) but I'm not sure if I can upload it to the site.

So is this indicative of:
1. A knackered compressor clutch
2. A sensor not instructing the compressor to engage
3. Something else?

Grateful for any assistance.

Graeme.
 
The compressor is hugely expensive, so it is much better to get a full VCDS scan carried out to check the sensors etc.

If you don't have access to anyone with VCDS then look for the major tyre companies that check Air Con, or better still an Air con specialist.

You could spend a small fortune on parts and not resolve this issue if you don't somehow pinpoint the cause first..

Steve B
 
Steve

Thanks for your reply.

I've asked an Air Con specialist (Steve Penpraze) to take a look on Wednesday next week to see if any errors can be diagnosed, but I'd thought I'd raise the issue here just in case anyone can offer some useful leads. I notice some other A2OC members have used his services in the South Wales area, so hopefully he'll have the necessary tools to get to the bottom of the issue.

Graeme.
 
Well Steve came over to give the AC a once over and confirmed that the compressor was shot :( so I'd be grateful if anyone here can recommend a good source for a new / reconditioned one and anyone in the south Wales area who can fit it.

Graeme.
 
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