mrsjmsimpson Posted December 22, 2014 Share Posted December 22, 2014 I have a 64 Fiesta Zetec S red edition with the EATC (Electronic Automatic Temperature Control) option. Just wondered if having this option means that I can leave the AC button on all the time, therefore meaning the car will only then use the AC when it needs to to reduce the air temperature. Quote Link to comment Share on other sites More sharing options...
alexp999 Posted December 22, 2014 Share Posted December 22, 2014 If you leave it on Auto all the time, then the EATC will turn A/C on as it is needed. Quote Link to comment Share on other sites More sharing options...
StumpyBloke Posted December 31, 2014 Share Posted December 31, 2014 Does this apply to 2011 Fiestas with EATC too, like my Titanium? Am sure in mine when the aircon button is on, then AC is on continually. It doesn't show Auto like the left button does. Sent from my iPad using Ford OC Quote Link to comment Share on other sites More sharing options...
Willy Posted December 31, 2014 Share Posted December 31, 2014 My 2013 facelift is always on in auto mode unless I turn it off. Quote Link to comment Share on other sites More sharing options...
gillyallan Posted January 1, 2015 Share Posted January 1, 2015 I leave the control on left on auto but manually work the aircon side 1 Quote Link to comment Share on other sites More sharing options...
alexp999 Posted January 1, 2015 Share Posted January 1, 2015 On auto, although the ac light may on, it just means it can turn it on and off as it needed. It won't be running all the time Quote Link to comment Share on other sites More sharing options...
mrsjmsimpson Posted January 1, 2015 Author Share Posted January 1, 2015 Does that mean that it only runs when it's needed? For example, if I have it on and I accelerate hard will it be switched off to divert power to the engine instead? Quote Link to comment Share on other sites More sharing options...
StevenST13 Posted January 1, 2015 Share Posted January 1, 2015 This is exactly how the climate control system Works. You have 3 options usually 1 eco aircon off 2 AC aircon always on manual control 3 auto aircon always on auto control of heater vents, airflow and temp. What you have to way up is it worth not being in auto and loosing ac all together. AC these days does cause the car to drink fuel like it used too. I've found it only effects mpg by .1 - .2 which is nothing really. The benefits of being in auto are quite big I've found as ac removes moisture from the cabin no more foggy windows, just set the temp and it will do the rest for u and it keeps ur concentration more on the road. I never have it off in my ST plus if you don't use the AC on a regular basis it will damage the system which then becomes very expensive to repair. I've seen endless cars having AC fixed because it's not been used all winter. If u use it regularly most systems only ever need to be serviced and gassed every 24months Quote Link to comment Share on other sites More sharing options...
StevenST13 Posted January 1, 2015 Share Posted January 1, 2015 Sorry!!! AC THESE DAYS DOES NOT CAUSE THE CAR TO DRINK FUEL LIKE IT USED TOO. Quote Link to comment Share on other sites More sharing options...
StumpyBloke Posted January 1, 2015 Share Posted January 1, 2015 How come the AC fan (engine bay) is always on then? I'm sure AC is always on on my 2011 when AC (switch) is on. I don't understand what you mean by the three aircon settings tho...surely it's either on or off? I'm obviously missing something :) Sent from my iPhone using Ford OC Quote Link to comment Share on other sites More sharing options...
StevenST13 Posted January 1, 2015 Share Posted January 1, 2015 It's only the climate control aircon that has 3 settings. I'm not sure what there called on fords but on my old seat it had auto which is aircon on in auto mode. Example you set the temp at 18c and that's it fan speed and vents controlled by computer so the car stays at 18c or there abouts. AC This is when u set the fan speed and which vents yourself. For example fan speed 2 windscreen and floor vent setting. Then the old fashioned mode eco which is no AC and fan speed and vents set by you. 1 Quote Link to comment Share on other sites More sharing options...
StumpyBloke Posted January 2, 2015 Share Posted January 2, 2015 I getya thanks :) So I can assume that when the AC button is on, the AC is always running and not just when needed. Sent from my iPhone using Ford OC Quote Link to comment Share on other sites More sharing options...
jace1969 Posted January 2, 2015 Share Posted January 2, 2015 I getya thanks :) So I can assume that when the AC button is on, the AC is always running and not just when needed. Sent from my iPhone using Ford OC LOL i just get in and turn it on myself,way above my head as i did think when auto light is on the aircon is on so if too hot it kicks in to cool it when you set to a temp. Quote Link to comment Share on other sites More sharing options...
StevenST13 Posted January 2, 2015 Share Posted January 2, 2015 Yep that's correct if the AC light is on the AC is on. It is more beneficial to just leave it on auto than not really. As the saying goes in the motor trade with aircon IF U DONT USE IT U WILL LOSE IT. As not using it for long periods damages the AC system. Quote Link to comment Share on other sites More sharing options...
Paramanic Posted January 2, 2015 Share Posted January 2, 2015 What happens when you press auto then press ac button off then? My autofan still works but doesn't use ac Quote Link to comment Share on other sites More sharing options...
StevenST13 Posted January 2, 2015 Share Posted January 2, 2015 Yes that's correct the fan speed and vents will still b automatically controlled but the AC will be off and it will just work the old fashioned way. 1 Quote Link to comment Share on other sites More sharing options...
Paramanic Posted January 2, 2015 Share Posted January 2, 2015 See a asked this because this is what I use it for only use ac if it's very warm to cool car down or very cold to heat car up lol Quote Link to comment Share on other sites More sharing options...
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