John,
I agree the problem is probably in your dash control, but for years I only ran
the one in my '80 with the timer! Yes, 10 minutes at a time usually made in
very comfortable for quite a while. Great to have an owner's manual to tell
you what you're missing...
Doug
"90 GL

John Brush wrote:

> I have the aux gas furnace under my 81 air cooled.
>
> Last night I was driving and thought I might like to be warmer than I was,
> so I turned the knob and the furnace did not come on. I felt a click on
> the dial, but nothing happened as I turned it up. I hopped out and checked
> all the fuses and the circuit breaker and everything seemed to be okay.
> The slider was on heat, and it has always worked up to now.
>
> As I drove away, I thought I would try the timer and see if that would
> work, and son of a gun, the furnace came on and ran for the ten minutes or
> so, and then shut off. I tried to just turn it back on, but no dice. The
> only way it will come on is with the timer. Works with the engine running,
> or not, just not with the dial as I am driving.
>
> I will dive under tomorrow, but I really don't know what I am looking for.
> Bentley has nice dwgs, but I haven't found anything that I might check.
>
> Just thought I would throw out the question in hopes that someone can
> offer any advice, or a SWAG before I climb underneath the dash tomorrow.
>
> Thanks for the space,
>
> John