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Old 06-28-2022, 11:01 PM   #1
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Join Date: Oct 2013
Location: Silver Spring, Maryland
Trailer: 2014 19' Named Bailey
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Angry Dometic AC Not cooling

I tried searching for answers without luck - probably my errors but our 2014 19 has the Dometic AC unit and it is not cooling worth a darn. I have cleaned what I can, but we are still suffering in the heat. Is my only option to replace the whole unit??
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Old 06-29-2022, 06:53 AM   #2
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After close to 10 years, it may need recharging to bring it back to life....or replacement, your choice.
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Old 06-29-2022, 09:05 AM   #3
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Recharging isn't an option - at least with the factory setup. It's possible I guess to add a charging port (it pierces the line as you tighten it down) and add refrigerant, but Dometic designed these units to be non-rechargable. They will tell you to replace the upper unit.

I'll tell you, for what it's worth, to strongly consider replacing it with a Houghton and forget Dometic. The Houghton is far quieter and by all accounts more reliable.
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Old 06-29-2022, 06:05 PM   #4
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I found it.... it is a RecPro....
Was the attachment a link to the Houghton? If so, it did not work for me. What model would you recommend and where can I purchase one? What I see most in looking are Coleman, Dometic, and Furion.
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Old 06-29-2022, 06:23 PM   #5
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Quote:
Originally Posted by FishBioGirl View Post
I found it.... it is a RecPro....
Was the attachment a link to the Houghton? If so, it did not work for me. What model would you recommend and where can I purchase one? What I see most in looking are Coleman, Dometic, and Furion.
You can purchase the houghton from recpro ( that’s where I purchased the 9500 we installed on our 21. You can get them with a heat strip if you want one but it’s only on the bigger units. The 9500 cools our 21 down excellent here in the Texas heat ughhh. One just has to choose which model one wants
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Old 06-30-2022, 09:46 AM   #6
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Location: Bonney Lake, Washington
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The AC on my 2010 17B didn't work worth a darn either. Found out that it was leaking cold air into the thermostat housing making it cycle off way too early. Once I installed some foam weatherstrip to seal up the cold air duct so that it could only come out the vents, my AC didn't cycle off prematurely and cools the trailer quite well. Cost about $3.00 to fix.

Symptoms were: When first started, the AC would blow cold air for a few minutes. Then I could hear the compressor cycle off and then it didn't want to come back on even though the trailer had not cooled off hardly at all. I removed the AC duct cover (inside the trailer) and discovered that the metal box that houses the thermostat was ice cold. So the thermostat was getting cooled down by the leaking cold air and thinking the trailer was cold and cycling the compressor off.
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Old 07-13-2022, 04:59 PM   #7
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Does RecPro RP-AC3400 have a Freon rechargeable port?

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