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Old 07-17-2016, 01:43 PM   #1
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Unhappy A/C not cooling very much

We have a 2016 Rockwood Roo 19 that we got last Oct. When we went out this past week the A/C (Suburban Model# 13500-48253C969 is what is listed on our Appliance Info Sheet) didn't cool very well. No cold air coming out of the vents, only COOL air. Needless to say it was a little warm inside the camper when the outside temps hit 90 (it only cooled the inside down to 80)! Looks like a trip to the dealer is in order. Or does anyone have a ideas as to something I should check?
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Old 07-18-2016, 01:55 PM   #2
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A/C not cooling very much

Here are a few things to check.
1. Make sure the filter is clean.
2. Make sure the baffle between the intake and return is in place and there are no air leaks between them.
3. Check to see that the freeze coil is clipped to the evaporator coil fins near the bottom center.
4. Check that the fan is on high or Auto when running.

Once you check those things, you'll know more about whether there's anything wrong that needs a dealer to fix.
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Old 07-19-2016, 01:19 PM   #3
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Well the filter SHOULD be clean as this is the first time we have used the A/C. The rest my dealer will check as he now has it (warranty work). I'll post what they find.
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Old 07-19-2016, 01:34 PM   #4
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It's tough to air condition tent ends... , tough even in hardside campers. The mfr. website on the AC units, will tell you a temp difference from air inlet to air outlet is normally 17-22 degrees. Don't seem like a lot, does it? When it's hot(mid to upper 80s, low 90s) I have a heck of a time(2 hrs or better) to get to 76 degrees, much less see the AC unit cycling on and off... and that is with 2 fans on, vents and skylight blocked off with foam. There were some threads also on optimizing AC units, over the last couple weeks, that you might find of interest. Use search feature on the site.
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Old 07-19-2016, 08:22 PM   #5
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It's tough to air condition tent ends... , tough even in hardside campers. The mfr. website on the AC units, will tell you a temp difference from air inlet to air outlet is normally 17-22 degrees. Don't seem like a lot, does it? When it's hot(mid to upper 80s, low 90s) I have a heck of a time(2 hrs or better) to get to 76 degrees, much less see the AC unit cycling on and off... and that is with 2 fans on, vents and skylight blocked off with foam. There were some threads also on optimizing AC units, over the last couple weeks, that you might find of interest. Use search feature on the site.
We had the curtains closed so we were NOT trying to cool the bed ends. The A/C unit NEVER did blow cold air, only COOL air. To me it acts like it was not fully charged. We could run the unit all day and it not keep the trailer cool. It was 80 inside after running the A/C most of the day.
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Old 07-20-2016, 08:57 AM   #6
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Once you get the AC issue resolved I suggest you do the Reflectix and solar blanket mods on the tent ends. I did both on our previous popup and hybrid and it made a difference. Kinda hard to see the Reflectix in the pic.

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Also check out the thread below:
http://www.forestriverforums.com/for...rn-113735.html
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Old 07-20-2016, 09:23 AM   #7
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Originally Posted by snikr View Post
We have a 2016 Rockwood Roo 19 that we got last Oct. When we went out this past week the A/C (Suburban Model# 13500-48253C969 is what is listed on our Appliance Info Sheet) didn't cool very well. No cold air coming out of the vents, only COOL air. Needless to say it was a little warm inside the camper when the outside temps hit 90 (it only cooled the inside down to 80)! Looks like a trip to the dealer is in order. Or does anyone have a ideas as to something I should check?
Every post here are within the way an A/C works. Not sure where you were at or the humidity was that day. More Humidity the longer it takes to cool down. A A/C is just a big humidifier. There is a delta T that is used in the business. That is the difference in the R/A temp and the supply air coming out. The best you can get is between 15 to maybe 17 degrees. So if your unit is closed up and the inside of the unit is 80 the best your going to measure is about 65 degrees measured at the outlet register. The first thing the A/C has to do is remove the humidity that built up in furniture ,rugs and such things. Also then you have a heat transfer which is in direct correspondence with the outside humidity. Think Florida in the summer time compared to Florida in the winter, big difference in cooling effect. Tent ends will produce a lot more heat gain then solid ends, the nature of the beast... I suggest start it early and let it try to keep up, or it will be sunset before you really get any relief.
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Old 07-20-2016, 09:47 AM   #8
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We did try to start the A/C and hope that it kept up but that didn't work. It lost ground. But thanks for the idea Witch Doctor. Hope the dealer can figure it out. I'm going to cry if they say they couldn't find anything wrong!
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Old 07-28-2016, 03:05 PM   #9
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My dealer looked it over and didn't find any problem with the A/C. Only thing we can figure is that my a/c unit might have froze up. They said it worked good for them and they had a couple of sticky days to try it out. They said NOT to run it all day if we were not there (to keep it cool). Time will tell.
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Old 07-28-2016, 03:19 PM   #10
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Check your return air divider!



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Old 07-29-2016, 11:14 AM   #11
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What should I be looking for?
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Old 07-29-2016, 11:40 AM   #12
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Also make sure you are not running your fantastic fans which will pull more hot air into the trailer.
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Old 07-29-2016, 01:47 PM   #13
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Also make sure you are not running your fantastic fans which will pull more hot air into the trailer.
You mean the roof vent fans?? We've come from pop-ups so this trailer and all it's "features" are new to us. Thanks for all the help everyone.
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Old 07-30-2016, 07:22 AM   #14
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You mean the roof vent fans?? We've come from pop-ups so this trailer and all it's "features" are new to us. Thanks for all the help everyone.
Yes the mult-speed fans in your ceiling/roof. If you run them while you are trying to cool you will remove air conditioned air from the trailer which will be replaced by hot, humid air pulled from the outside.
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