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Old 10-20-2007, 05:35 PM
NHBimmer NHBimmer is offline
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Location: Wyoming
Join Date: Oct 2007
Posts: 1
Mein Auto: 1988 E28 535i
Question HVAC blower question

We just picked up our '88 535i, and the blower doesn't function unless the A/C button is depressed. All the fan speeds work fine when the A/C is on, but nothing when just the heat is on. Does anyone have any idea what might be the cause of this?
Thanks in advance!
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