They all have sight windows don. What I use to determine if fridge is lit is the LED on the panel, you have an early fridge with the meter.

Replacing the stock led with a brighter one helps a lot. The. Led glows when the fan is lit and with a brighter led one can easily see the change in k I got intensity with change in flame state.

Alistair

> On Jun 28, 2015, at 8:18 AM, Don Hanson <dhanson928@GMAIL.COM> wrote:
> 
>   All this negativity about the Dometics....
> 
> I've had 4 different campers with Dometic fridges and a couple of Norcolds
> (12v/110v)  I didn't use the 12v compressor fridges much, unless it was
> underway...when trying to camp with one of those, I found them noisy  and
> hungry to run down the battery....
>   The Dometics?   Mine have been good.   They've been almost trouble free
> and they do preserve food and cool things down without a huge battery and
> all kinds of other complex systems to dink around with.   The model I have
> now has one of the flow-meters, right on the face inside the door, making
> it easy to see if it is actually lit.......much better than that small
> 'sight-window' that some have.   Mine have all worked quite well.   Yes,
> they are small...but so are Vanagons..  I suppose I could 'stress' about
> how inefficient my Dometic is in my Vanagon but I'm satisfied with them...