[unimacs]

I noticed earlier in the week that my range was as not good as I had expected for that type of day. It's Summer of course but temps were more moderate than they have been and I thought I'd been pretty conservative with A/C use (set on Eco, low fan speed, 75°).

Then last evening I noticed that the climate control system was showing the AC was on even though I had selected fan only, - and it was at 27% power. If I turned the fan all the way off, then the AC would shut off.

By looking through some old posts, I found something that suggested that auto-defog was the problem, so I shut that off. Still didn't fix it. Finally this morning as I was messing around, hoping to avoid disconnecting the battery as an attempt to reset everything, - I set the climate controls to floor only. What do you know? That shut the A/C off. It stayed off even when I changed the controls to direct the air out of the dash.

 

[freshcut]

The a/c system will run if the battery needs to be cooled. It's a shared system so even with just the fan on, and you're not calling for a/c (eco/comfort) you will feel cool/cold air while the TMS is operating. I've noticed on days that are warm but sufficient to just have the windows down and fan that I will get cold air for brief periods when the battery gets a little warm. I haven't however messed with the airflow direction to see if that makes a difference. It's possible that maybe it was just a matter of timing in which you switched to the floor at the same time the system determined the battery no longer needed cooling.

 

[unimacs]

The a/c system will run if the battery needs to be cooled. It's a shared system so even with just the fan on, and you're not calling for a/c (eco/comfort) you will feel cool/cold air while the TMS is operating. I've noticed on days that are warm but sufficient to just have the windows down and fan that I will get cold air for brief periods when the battery gets a little warm. I haven't however messed with the airflow direction to see if that makes a difference. It's possible that maybe it was just a matter of timing in which you switched to the floor at the same time the system determined the battery no longer needed cooling.

I wondered if that might be it, but I don't think it is. At least I hope it isn't. The reason I say that is because while this was happening, if I turned the fan all the way down, the A/C would go off. At least the console display said it was off. If the A/C were on to keep the battery cool, you'd think it would stay on regardless of what I set the fan speed to.

Also, I'd think I would have noticed that behavior before and I hadn't, even on much hotter days.

 

[freshcut]

I'll have to check on mine. Come to think of it, I don't recall the icon indicating the A/C was on when the TMS operates, regardless of fan setting and I believe it still shows off even when blowing cold air through the vents in fan mode. I do know that when I have the climate control off and on any screen other than the climate screen I do get a black box at the bottom that indicates climate settings and it will go between showing the fan only icon to just a blank space where that icon is when the TMS turns on. It's the same box that appears anytime you adjust your settings when your not on the climate page. I just can't confirm at the moment what the snowflake icon indicates.

 

[DZD]

While not quite the same - I have noticed mine show the A/C is on even when in "fan only" mode to cool the batteries - it usually doesn't last very long though - I don't recall ever turning it all the way off to see if it shows as off.