E70 30i HVAC Running Blowing Warm + Hot

[richardb]

New to the e70 platform here. Long time e53 owner, which by the way, had the 'knurled stratification wheel' to adjust hot/cold in the HVAC.

It appears the e70 is one of few models that does not have the temperature control wheel. I digress.

I noticed our 2010 30i blows pretty warm almost hot air even when the HVAC temp is set down to 60 degrees, with no AC on. It gets pretty warm in the cabin with this setting. It only gets cold with the AC on.

Is this a common issue?

[andrewwynn]

E70 has temperature wheel. It's hidden in the idrive system. Shortcut to get there is hit the vent control button then dial hot to cold.

[Attacking Mid]

Try Andrew's suggestion first, otherwise, you may have a heater control valve leaking. Mine is failing and randomly causes hot air to blow despite all controls turned to "cold". I'm going to try the $35 rebuild kit rather than buying a new one.

AM.

[richardb]

Thanks Andrew, I checked the settings and it is adjusted in the neutral position. Neither hot nor cold.

So... heater valve?

[andrewwynn]

Need to know heater core temp to know for sure do you have a scanner that can read temps and valve status?

[richardb]

Originally Posted by andrewwynn

Need to know heater core temp to know for sure do you have a scanner that can read temps and valve status?

I haven't purchased one yet. Foxwell 510 or 530, correct?

[andrewwynn]

I've heardRumors about problems with the 530 so I only officially recommend 510 or 520


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[richardb]

Still haven't resolved this. Temp is at 60* yet it is blowing warm air! So frustrating.

I'll poke around with the Foxwell NT510 Elite that I just bought and report back.

[andrewwynn]

It will report the flap percentage of each flap also it will show the status of each heater valve and heater core values.

The heater cores are way more BTU than the AC evaporator. I've used ac plus heat most of my life to have dryer warm air when it's raining.

[richardb]

I'm going to order a new genuine heater valve I think. Part 64116910544.