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Old 06-29-2016, 10:45 AM   #11
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Residential fridge like we swapped to will solve all the fridge cooling issues. On the AC, we can maintain 72 deg inside in full sun / no shade, 96-98 deg outside temp, BUT, that's with several changes / modifications. This is with a single 15k AC / 33' rig. We've full timed in a couple of rigs, and keeping cool is a must, so when things don't stay cool, I'm axing away at stuff to make it work. I managed to get our 40' / 4-slide fifth wheel to maintain 72 in the same temps, but again, with several changes. It can be done. Some of the things I've done, people aren't willing to do as they're scared of voiding a warranty, or just don't like the change.
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Old 06-29-2016, 11:48 AM   #12
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AC

Quote:
Originally Posted by mike837go View Post
You are at the extreme limits of the capability of the equipment.
If you check the manuals, you'll find that temps above 90F will severely limit the cooling capacity of a gas absorption fridge. And that an A/C unit only provides 40F or 50F reduction in air temperature.


Getting the RV into a shady place with the curtains closed and limit going in and out of it. Plus stop opening the fridge every hour to check the temp.
An air conditioner normally provides a 15-20 degree temperature drop. A unit providing a 40-50 degree temperature drop would be refrigeration.

Like previously posted you are at or above the design load of the equipment. If your in a campground or RV park, there are dozens of other units loading the power grid at the peak load times. I hope you are using a power maintaining device, for low voltage protection.

The other posters are pretty much spot on, you need some shade or a swamp cooler. A redneck swamp cooler is simply a water sprinkler on your roof. The other alternative reverts to the early days of AC, coolers of ice with air directed across it.
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Old 07-12-2016, 08:06 AM   #13
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It was 108 yesterday. Dry heat. No shade.
88 inside.
Sounds like my unit is doing all it was designed to do.
Bummer.
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Old 07-12-2016, 12:03 PM   #14
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I find the reflective shades help quite a bit and I'll leave some in near the bed to keep it dark in the morning. We bought ours at the dollar store.
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Old 07-12-2016, 01:40 PM   #15
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Last weekend we were out. Fridge worked just fine, no problems there. AC struggled in the middle of the day; kept the trailer at 78. External air temp was right at 100, and the trailer was in almost full sun. Awning was out, but that's all the effort we made to keep it cool. I have a roll of Reflectix in my garage, but it has not yet been deployed (DW thinks it will "look trashy"), so I plan to use it in other spots where it can't be seen.

FWIW, we gave up and went home. It was just too hot. The pool at home helped tremendously, so I would second the suggestions to find a way to get wet, it will help.
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Old 07-12-2016, 03:18 PM   #16
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I'm sure everybody thinks we look trashy but we feel so "cool".
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Old 07-12-2016, 03:58 PM   #17
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I removed the vent cover on the top of the camper and added two computer fans blowing upward. This has made a huge difference in our frige/freezer combo. I also added a small internal fan to move air over the cooling fins. Together these have made it work in central Florida heat with no problems at all. Yes we have 2 ac units running inside too.
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Old 07-12-2016, 05:33 PM   #18
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The upper fridge vent on my rig has a 4.5" muffin fan. This fan never worked even in high temps. I jumped out the thermostat and put a switch in to control the fan. I also installed a product called Fridge-fix from SmartRVProducts.com. This is a dual fan unit that installs on the top of the interior of the fridge. Rather spendy at $125 but it helps the fridge do its job. These absorption fridges aren't the most efficient units on the market and they need all the help they can get. These two things have improved the fridge to make it more efficient and the Fridge-fix also alleviates the need to defrost the it every other day.

FYI, to prevent auto defrost every other day I turn the fridge off every day for a couple of seconds and then turn it back on.
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Old 07-12-2016, 05:53 PM   #19
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I went to Cabelas and got a 3oz "nasa" survival blanket.
I've cut it up to fit the west facing windows and got it installed.
Heat transfer through glass is almost zero now.
Hoping for a more comfortable evening tomorrow.
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