As a backup means of determining if the fridge is operating (on flame, which is what the LED will tell you) you can always lay a hand on the outside flue vent. If you listen closely you can tell what cycle the fridge by the sound coming from the flue.

Jim

>
> On Jun 14, 2019 at 4:26 PM,  <David Beierl (mailto:dbeierl@gmail.com)>  wrote:
>
>
>
>   >
> >  Can I jump on this thread to ask about the LED light near the bottom of
> >  that same panel (on my 87 Westy). I think the light is to indicate that
> >  the fridge is working on gas.
> >
> >  Mine has never worked and it would be nice to have. It's hard on the neck
> >  trying to see the flame through the tiny window at the bottom of the
> >  fridge. Does anyone have any thoughts on what the cause and cure might be?
> >
>
> Likeliest is black wire in LED panel harness unplugged from single
> connector in fridge harness. Or wire unplugged from the terminal where the
> thermocouple screws into the gas valve.
>
> After that likeliest is right-hand chip is bad.
>
> You *cannot* test this with a 1.5V battery. The signal goes negative to
> chassis ground, and the absolute maximum voltage for the chip negative to
> the negative supply pin is 350 mV. If you can make a voltage divider
> limited to say -250 mV max you could use that.
>
> But when in doubt, replace the chip. Chips failing and the power switch
> coming unsoldered are about all that goes wrong with the board.
>
> Yrs,
> d
>