Roof top RV A/C unit question/advice

Brands are not what they were years ago. Dometic and RVP/Coleman in recent years have lost some quality. We have replaced a number of them that were less than 2 years old of both brands. There are a couple of new brands out there as well. Advent Air is one. No experience with then though. Generally stick with Dometic or RVP Coleman. But you pay more for them and it may not pay off.

 

So.... I took the cover off the ceiling last night... It's a Dometic 15,000 BTU ducted unit. Our trailer is only 7 or 8 years old. The roof cover has a baseball size hole in it. The air is about 75 degrees. It has not completely quit working. The compressor still comes on. It is not making condensation though. I am going to remove the roof top cover and see if there is a bird's/squirrel's nest in it. How critical is the cover on the A/C? Our camper lives under a big shed now.

 

This saddens me......

 

Yea, that was never an issue. If we were ever using the a/c we were on either 30 amp or 50 amp power, and once using my Predator 3500 inverter generator.

I need to get a good reading across the intake/vents and see what the differential is. Trailer is still under warranty, so I may have a claim if it's not within spec.

 

cover shouldn't have any bearing on how it works while under covered storage.. long term exposure to elements when going down the road, or storage uncovered could be an issue.

 

You need to be seeing 18-20 degrees temperature differential between outlet and return air. If you aren't seeing that, there is a problem

 

IIRC, most RV air conditioners are not built to be recharged. They lack a schrader valve.

 

http://www.doityourselfrv.com/rv-air-conditioner-maintenance/

 

Yep. But if you have a friend in the A/C business they can fix that. On my old trailer a buddy silver soldered a service port into the line after he fixed a leak at a joint. Then vacuum evacuated the system and recharged it.

 

I can tell I am going to do some PM on this thing before I scrap it and replace. It seems like it can't get the trailer below 75 degrees on hot days. No direct sunlight hits the trailer. At night it does ok. I'm still curious why no condensation is building produced..... No puddles around the trailer...

 

https://www.grainger.com/product/6X...4517!&ef_id=U86Q0gAAABeqxBEo:20180619204618:s

Refrigrators and freezers don't have ports either they add a saddle style port to recharge them most Rv repair shops should offer this service

 

Good info. Thanks!