[Judge8]

I noticed a bigger puddle of water under my M340 today and thought it was kind of strange as I had not seen much A/C condensation since getting car. We had A/C on much lower setting than normal as weather finally cooled down. I thought maybe someone had poured a drink or something in parking lot. When I got home it was dripping a ton of water as well so I figured it had to be A/C. Took another drive with A/C off and no water dripped then one more with A/C on higher settings and no drip as well. Not sure what is going on but only difference is weather for me. Maybe some water gets built up first?

[RockCrusher]

Originally Posted by Squidget

It's not hard for me to believe at all. I'd dicked around with enough machinery over the years to totally expect this to happen.

I have often found that machinery often does occasional utility or self-check cycles, for example to to keep grease from settling. My home AC does this even when off. So goes my house generator.

User-facing controls in the modern age often don't tell you the whole story.

And I'm not saying the G87 AC *does* do this, but I totally believe it *could be* doing this.

Can't really disagree. While I find it hard to believe the compressor could be engaged even with the A/C disabled via the climate control controls I can't really say I would believe it is impossible the compressor could not be engaged even with the A/C disabled.

Thinking out loud -- so to speak -- I wonder under what circumstances would the compressor be surreptitiously engaged?

I do know A/C systems like to be used regularly. This circulates the refrigerant and along with it compressor oil. This oil helps prolong the life of the A/C seals/o-rings. So even in the winter my SOP has been to operate my residence A/C occasionally (I shoot for once a week..) and to also operate my vehicle A/C. A bit easier task because even in the winter the A/C is on most of the time I'm in the car to help dry the air and avoid fogging the windows.

[aerobod]

From the manual: "In recirculated-air mode, air conditioning is automatically switched on to dry the air and avoid window condensation" - this is independent of using air conditioning for temperature control but is dependent on the condensation sensor.

[Trogster]

Originally Posted by aerobod

From the manual: "In recirculated-air mode, air conditioning is automatically switched on to dry the air and avoid window condensation" - this is independent of using air conditioning for temperature control but is dependent on the condensation sensor.

Thank you for this..... ran out to the car to verify.

I confirm my M2 is set to "Fresh Air" mode.

The mystery continues.

[RockCrusher]

Originally Posted by aerobod

From the manual: "In recirculated-air mode, air conditioning is automatically switched on to dry the air and avoid window condensation" - this is independent of using air conditioning for temperature control but is dependent on the condensation sensor.

Thanks.

Never got to that part. I stopped reading the climate control info as soon as I learned how to put it in automatic mode and turn it on.

I never use recirculated air mode as I learned with my very first car which this feature the windows fogged up.

[MASHCT]

All I know is - xenomorphs drool a lot. I'd be checkin' for one, if I were you.