refrigerator problems

[Ralph L. Fullenwider]

Not really odd in some ways. Electronics have always had the reputation of
failing do to heat. Though todays electronics are less sensitive some
"parts" can be and fail. You more than likely have a Dometic board
installed and they are "potted" other wise I would suggest waiting until
night the take the wifes hair drier out there and apply heat and see if it
changes. You have a relay on that board that is heat sensitive or a triac
that is heat sensitive. I remember when nixi tubes would heat up the "fire"
spurious things would really happen then,, oops nixi tubes, am I dating my
self or what? LOL

Safe travels,

Ralph and Charolette Fullenwider
84FC35 "Ruff Diamond"
Duncan, Oklahoma

At 02:33 PM 5/26/2009 +0000, you wrote:
>Thanks to all who responded. I may need to replace the board.
>
>What's odd is that during the day it will switch to DC. At night it
>automatically switches back to AC and stays on AC all through the night
>and into the morning. I'm wondering if it has something to do with the
>heat of the day? Why does it switch to AC at night only???
>
>It's another one of those little oddities that keeps life interesting.
>
>Jerry
>85 PT40
>
>--- In WanderlodgeForum@yahoogroups.com, "Ralph L. Fullenwider"
> wrote:
> >
> > Hi Jerry:
> >
> > Replace the circuit board with a dinosaur board. The board senses the
> > changes in voltage and goes to what is sensed or default if not. 1. 110vac
> > is first, 2. LP then 12 vdc if the other 2 are not sensed. Point is, the
> > board is telling your system what to do. While you in there, do an ohms
> > check on the 12vdc heater, it may be open and not working. At best the vdc
> > setting is poor.
> >
> > Safe travels,
> >
> > Ralph and Charolette Fullenwider
> > 84FC35 "Ruff Diamond"
> > Duncan, Oklahoma
> >
> > At 04:25 PM 5/25/2009 +0000, you wrote:
> > >I'm currently on the road and my refrigerator is doing some goofy
> > >stuff. I believe it's a replacement to my 85 PT40. It's a Dometic 3807
> > >Royal Designer Series. I don't have the manual for the frig (wasn't in
> > >the Blue Box) and I've researched a little online. Here's what it is
> doing:
> > >
> > > - It seems to run fine on AC setting then suddenly switches to
> > > DC. While on AC, the number 1 setting (1 - 5) seems to stay plenty cool.
> > >
> > > - When it switches to DC (without prompting while still hooked to shore
> > > power) it tends to warm up even in the 5 setting.
> > >
> > > - All breakers seem to be fine and there is power at the outlet (when
> > > tested) at the back of the frig.
> > >
> > > - There doesn't seem to be any rhyme or reason on when/why it switches
> > > from AC to DC.
> > >
> > >Any thoughts? It might be that I am ready for a new frig (don't really
> > >think so) or ready for a rebuild. Or, the circuit board may need
> replaced.
> > >
> > >Hope you all have a great Memorial Day and thanks for your service to our
> > >country!
> > >
> > >Jerry 85 PT40
> > >
> > >
> >
>