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#1
09-23-2018, 05:19 PM
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Grey Market HVAC
In the attached pic the heating & cooling controls seem obvious, except for one. The right-hand rotary knob is stuck; the markings on the rim would suggest that it controls air flow, either up, down, both up & down, or ? (off?). Do other controls have to be in certain positions for the right-hand knob to be rotated? Does anyone have a user's manual that covers this?
1984 W126 Grey Market 280SE. 
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#2
09-24-2018, 02:20 AM
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It’s been a while but... clockwise from top are defrost, bi-level, heat/footwell and dash vent. It’s practically continuous variation between any two marked positions. The dial controls a pair of Bowden cables in hard plastic sheaths so the cables are able to push and pull. IIRC the right dial is fully mechanical and independent of other settings. If it’s stuck, I’d say it’s most likely one of the flaps it actuates is stuck. The cables aren't very long. You might be able to see what’s stuck by pulling the control panel.
Sixto 98 E320s sedan and wagon 02 C320 wagon
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Linear Mode
