EJeff8

Okay, so this sounds extremely odd, but since owning my 2000 EJ8, I've noticed it do this a couple of times.

So, usually the situation where it does this is when I have my heat, recirculate, and rear defrost on. I'll do this, look down and somewhere along looking away, A/C turns on and recirculate turns off.

I don't think it's just me hitting the wrong buttons because it's happened a few times. Also, when I would turn my stuff on, wouldn't I notice my usual two orange buttons on rather than an orange and my green A/C on?

Just wondering if it happens to anyone else or it's it's just a weird phenomenon happening to just me. I mean, if it is and someone has a solution hit me up, if not it's no biggie, just wondering.

silverbullet9626

i have had this problem on my 96 dx dont know what the hell it is and it kinda aggravating so let me know if u find out what it is

B18C5-EH2

I think the A/C turns itself on if you are using any defrost/defog modes as it helps to remove moisture - A/C makes defrost/defog work much, much better. Even if you've got the temp set to full hot having the A/C button pressed greatly improves defrost/defog function.

I don't know if this is a built-in feature on your Civic, but it is on later model Hondas for sure.

EDIT:

My 2005 Honda Element does in fact turn recirculate off, and A/C on if I do nothing more than select the defrost/defog mode on the vent mods dial.

EJeff8

Hm, did not know this, will try the next time my windows freeze over. I'm intrigued.

This is precisely what mine does.

B18C5-EH2

Here I just confirmed my suspicion by looking it up in the 1996-2000 Honda Civic Service Manual.

I am quoting directly from page 21-2 in the illustrated index portion of the climate control/heater section of the manual, bottom of the page:

EJeff8

Bravo, EH2.

I'm quite impressed and joyed.