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Old 07-28-2016, 10:54 AM   #1
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AC freezing up-Normal? or Issue.

Couple times in our 2015 Roo 19 we've had the AC freeze up on us. The fan seems to run at about 60% and it's luke warm air. I've flipped it over to fan high, and a few minutes later water/condensation pours down the gutters like a river. I'm wondering if this is normal and expected, or I should run it in for a warranty repair.
Couple of factors that make me wonder if this is "to be expected":
We've been camping with outside temps in the 90-100 range with high humidity (Missouri, Arkansas, with Colorado being the lowest humidity ranges).
We've had 3 events recently where the AC froze up. Once through the night, and twice when we left the unit running on low during the day.
What's your experience? Lots of info on this condition, just wondering about the hybrid/Roo/Shamrocks specifically.
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Old 07-28-2016, 11:19 AM   #2
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Have you had your fan on high?
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Old 07-28-2016, 11:24 AM   #3
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Sounds like you might be low on refrigerant. I'd have it checked.
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Old 07-28-2016, 11:29 AM   #4
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Well, so far we have camped once in 100 degree very humid conditions, we did not have this problem.... but we were in shade and I do have the gizmos on the tent ends. The AC cycled on and off and kept the camper at a reasonable temperature. When the AC ran, there was a steady stream of condensate coming off the roof. Will see how it handles at the beach in a couple of weeks......
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Old 07-28-2016, 11:30 AM   #5
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Condensate off the roof is fine, normal. Freezing up though, is not.😉
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Old 07-28-2016, 11:33 AM   #6
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Run on high fan until the temp and humidity are reduced, then you should be able to run on auto. Check the filter and clean if necessary. If the AC is mechanically OK it can freeze up in very humid conditions if there is not enough air flow to keep the condensate above freezing on the coils.
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Old 07-28-2016, 11:34 AM   #7
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It is Normal

I have a 2015 Shamrock 19, and you need to run the AC on High Cool all the time or the unit will freeze up, especially if there is a lot of outside humidity. I do not know the exact reason this occurs but I thought mine was broken and took it back for service and they told me this is recommended by manufacturer when humidity is greater than 45%. I live in NC and run it on high whenever we camp (seriously humid) and have not had a problem since. Just adjust the temp gauge to suit your needs. I was out last week and it was 98 with a heat index of 105, and was very comfortable. Hope this helps.
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Old 07-28-2016, 11:36 AM   #8
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I know you asked specifically about experiences from hybrid/Roo owners but I will tell you.. ANY R/V air conditioning is susceptible to freezing up in high humidity conditions running the fan on low only. The more air flow the better for keeping it from freezing.
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Old 07-28-2016, 11:37 AM   #9
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Quote:
Originally Posted by jehrbear View Post
Couple times in our 2015 Roo 19 we've had the AC freeze up on us. The fan seems to run at about 60% and it's luke warm air. I've flipped it over to fan high, and a few minutes later water/condensation pours down the gutters like a river. I'm wondering if this is normal and expected, or I should run it in for a warranty repair.
Couple of factors that make me wonder if this is "to be expected":
We've been camping with outside temps in the 90-100 range with high humidity (Missouri, Arkansas, with Colorado being the lowest humidity ranges).
We've had 3 events recently where the AC froze up. Once through the night, and twice when we left the unit running on low during the day.
What's your experience? Lots of info on this condition, just wondering about the hybrid/Roo/Shamrocks specifically.
With the fan on low and high humidity, you may not be moving enough air across the coils to defrost. When I had one AC in my precious 5er, it could not keep up in 95 degrees and high humidity and would freeze up. When I added the second AC it gave each unit a break in order to defrost. I'm guessing your unit is just being overworked in the high temps and humidity.
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Old 07-28-2016, 12:18 PM   #10
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Along with the suggestions above, remove the grill and check to see if the freeze coil (looks like a stack of quarters with wires) is attached to the bottom of the evaporator coils.
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