Resistor Fix on Heater vent motor - Q

[johnholt at sympatico.ca]

Steve.....

www.teleport.com/~scottmo/AC.html

John.....





>A while back I printed out a "fix" for a problem of the lost positioning
>of the heater vent control motor (this is the motor that works the heat
>mixing cable in the AC programmer box).
>
>As I recall, the problem was the rheostat that the circuit uses to sense
>position gets "short" spots in it and the motor can hang at these
>spots.  The fix is to solder a 680 ohm resistor between two of the
>rheostat leads.  This will cause there to be some signal thru the short
>spots and so the motor will not hang up....
>
>Well I finally have the controller out and a resistor in hand, but I
>cannot find my copy the old post that described WHICH two rheostat
>terminals I should use for the resistor.
>
>Anyone on the list know which two terminals (or which colored wires) the
>resistor goes on?
>
>TIA