Most likely the electrical part of the switch started to melt. It will need
to be replaced. It should be noted that for maximum heat high speed should
not be used as all air is outside air. The pictogram to the right shows all
levers to the right and the number 2 indicates the position for maximum
defrost. To further save the front fan once the vehicle is under way there
is little need for the fan as air will flow in as long as the van is moving.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
David Cohen
Sent: Sunday, December 27, 2009 5:50 PM
To: vanagon@GERRY.VANAGON.COM
Subject: question regarding front heater switch and knob, 1990 Vanagon GL

Hi,
  I have a 1990 Vanagon GL and just recently the knob for the front  heater
stuck in the number 3 position.  It will turn off and back on to  number 3
fan position if I wiggle the knob but will not move back to number 2, 1  or
off position.  Also the knob pulls out of the switch but doesn't look
broken.  Any ideas how to fix this?  I need my heater to work  correctly in
these
cold weather days.

Thanks,
David