RMD8555 fan?

[Kountrykamper]

Only applies while trailer is being towed and not when sitting still.

It's a Dometic thing. What works for some may not work for others.

[CADreamin]

Pardon my confusion ... So the little cup in the back of the refrigerator should be half filled with water before each trip (?). And there's a drain hose which carries the condensation from the refrigerator into the cup. And then one should check it periodically during the trip. Yikes, I didn't realize there was such an 'animal' (cup). We just finished a three week trip through Idaho, Montana, South Dakota, Utah and Nevada and didn't have a problem with our refrigerator but maybe we just lucked out.

[gbaglo]

You don't fill it with water. You just add an ounce and a half of gin.

[Greg A]

Originally Posted by gbaglo

You don't fill it with water. You just add an ounce and a half of gin.

Don't forget the olive.

[Kountrykamper]

If you don't have a problem with the fridge temp rising while traveling don't worry about it. Several people with at least the 4.3 8551 fridge do have problems and a couple ounces of water in the cup helps to keep air from outside from being forced back up the drain tube and into the fridge while going down the road.

[cpaharley2008]

Every little bit of prevention helps these units, while under way the air circulation could have an impact on the performance and some units may have water from defrost cycles and some may not, but there is a hole in the back of your refer that when uncovered from water can and will allow warm air to enter the refer, your choice. Just like Alf found the air leaking from the door hole in some models, each one is different so you may not have any issues, but for those that do, plugging air leaks will help the performance.

[CADreamin]

"You don't fill it with water. You just add an ounce and a half of gin. "

Now THAT makes sense!!

However, you're right Jim, every little bit helps so we'll make note of the cup and keep it half filled when traveling. We have the original 6.7 and, knock on wood, it's been performing just fine (we do have the "Texas Fan"). Our outside temps ranged from 40s - 90s, refer set to 4, propane while traveling, electric when parked, running a little fan inside the refrigerator. The only issue I had was one night in Salt Lake when, at 1:00 am, it was 85º outside and the darn Texas Fan ran almost all night long ...

I was wondering about the defrost cycles as, while we were on our trip, I noticed an ice buildup on the baffles (fins, whatever) in the freezer. We were gone for three weeks and it seemed as if the ice was building but never got so bad I was worried. Have to look that up.

[escape artist]

Originally Posted by gbaglo

You don't fill it with water. You just add an ounce and a half of gin.

Hi: gbaglo... I keep the bottle of Gin/Vermouth in the freezer... 1oz. Vermouth to 25 oz. of Gin. I like mine dirty so 1 tbsp of Olive juice+ 2 Olives in the glass makes it so!!! Alf
escape artist N.S. of Lake Erie

[gbaglo]

I actually can't stand the stuff.
Mother of my first girl friend served me a gin and tepid water once many years ago. Triggered my gag reflex. Can't stand perfumed shampoo either, although, I'd probably drink that before gin.

[escape artist]

Originally Posted by gbaglo

You don't fill it with water. You just add an ounce and a half of gin.

Hi: gbaglo... We guys used to call Gin something like "Painty remover" Alf
escape artist N.S. of Lake Erie

[Jim Bennett]

Originally Posted by escape artist

Hi: gbaglo... We guys used to call Gin something like "Painty remover" Alf
escape artist N.S. of Lake Erie

For us the term "Panty Remover" was a label for Lemon Gin. Nasty stuff. It went down too easy for straight alcohol.

[escape artist]

Originally Posted by Jim Bennett

For us the term "Panty Remover" was a label for Lemon Gin. Nasty stuff. It went down too easy for straight alcohol.

Hi: Jim Bennett... As my Dad used to say "I know more about being young... than you know about being older". Ain't that the truth Eh? Alf
escape artist N.S. of Lake Erie

[cpaharley2008]

Candy is dandy but liquor is quicker....

[TAfraser]

I don't know if this will help with the cup and it's evaporation or not. I extended the drain hose from the fridge to the cup. This allowed me to put a large loop in the drain hose before re-attaching it to the cup. That loop acts like the P-Trap under your sink. It takes very little water to keep the warm air out and the loop is large enough that going down the road is unlikely to clear the tube. So far I haven't seen it dry, but then I haven't been keeping a close eye on it. I'll do that on our next trip.

[cpaharley2008]

That should work since it serves the same purpose. My set up prevented me from doing this so I ended up just keeping the cup filled with water.

[MyronL]

“You’ve made an excellent choice…yadda yadda…” “These instructions provide you with the necessary guidance for the proper use... yadda yadda…” “Energy-saving tips…yaddda yadda…” “Troubleshooting…etc.”

The Dometic operating instructions is 24 pages of mostly redundant corporate C.Y.A.-speak but after wading through every page in search of guidance on how to keep your fridge food cool and edible I found no, repeat no, not a single reference, to this feared alleged source of unwanted warming; the dreaded cup. Hello.

[escape artist]

Originally Posted by MyronL

“You’ve made an excellent choice…yadda yadda…” “These instructions provide you with the necessary guidance for the proper use... yadda yadda…” “Energy-saving tips…yaddda yadda…” “Troubleshooting…etc.”

The Dometic operating instructions is 24 pages of mostly redundant corporate C.Y.A.-speak but after wading through every page in search of guidance on how to keep your fridge food cool and edible I found no, repeat no, not a single reference, to this feared alleged source of unwanted warming; the dreaded cup. Hello.

Hi: MyronL... It was on a private RV Co. web site that I ran across a reference to air infiltration into the fridge through the condensation drain hose. The trouble with Dometic is their way of doing things. Least expensive and other terms come to mind!!! The RM 8 series seems to be a total collection of those ways.
Our former 5.0 with the 5 cu. ft. fridge had a drip tray inside... no drain hose... and if you forgot to empty it, soggy veggies resulted. Alf
escape artist N.S. of Lake Erie

[cpaharley2008]

I believe it came from a video posted on Marx's rv site, the person who brought you "The 12v side of life " and other informational videos.

[Jubal]

Actually cold air is denser than warm air. The loop trap in the condensation drain line or water in the collection cup limits the loss of cold air out of the refer box.

[MyronL]

Oh, I stand corrected. So the cup was not first mentioned on a Trump Tweet.