Question about Dometic Rooftop RV Air Conditioner

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I have a dometic duo therm roof ac unit that is low on freon - can the system be recharged?

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It is a closed system, (ends are soldered) that said, a heating and cooling guy may be able to install fill valves and re-charge for you, but make sure you get a quote ahead of time. How old is the unit? Not normal for them to need re-charge, and I've seen them work good for 15 years, if maintained properly. Has it been completely cleaned recently?

Posted on May 27, 2010

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Posted on Jan 02, 2017

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1 Answer

Can I recharge a Duo Therm 600315.001 RV Roof mounted air conditioner? It uses R22 refrigerant. If not, where can I find a replacement or can it be serviced somewhere?


I would suggest that you visit an ac specialist shop as all air conditioners( car, truck , house and yours all use the same principle of operation
because it is roof mounted in an RV may be a caravan repair shop that has an ac specialist in the workshop or a truck service shop that installs ac units in truck cabins would be a good place to start

Mar 13, 2016 | Dometic Heating & Cooling

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Where can I find the model number on this old Duo-Therm roof AC. Is it possible to recharge it?


Take the cover off to see the data plate. There may be one inside by taking the inside cover that holds the louvers and filter in place. If it needs to be recharged, then there is a leak in the metal tubing. That has to be located and repaired first. Install a drier on the low side to absorb any moisture let in by the leak before evacuating the system for freon.

Aug 07, 2015 | Heating & Cooling

1 Answer

What is wrong with my RV ac unit ?


Low freon switch prevent the compressor from running when there is not enough freon to carry the oil to lubricate it. There is almost always enough pressure to start it but as soon as it's running low pressure drops and the compressor stops.

Aug 04, 2014 | Dometic 457915 Duo Therm Brisk Air...

1 Answer

What is the expected air temp on a Duo Therm Roof Unit? Also can they be recharged? Thanks!


Hi,
They should run 50 -55 F or about 20 degrees less then the indoor air temp... and yes they can be recharged.....

How to add Freon to a Air Conditioner or Refrigeration System
http://www.fixya.com/support/r5638346-add_freon_air_conditioner_or

heatman101

Aug 23, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

RV Dometic Duo Therm roof top AC w/heat pump Model #630515.321El Serial #21631212 Yr. 2003. It is the rear unit, front unit working fine. In AC mode it is blowing hot air as if the heat pump is on. Fan...


If the Air comeing out is the same as the temp inside the RV make sure the compressor is running and not just the fans. It could be low on freon. If freon is ok then you would need to ck the wiring to the selector switch for a short. It would be obviouse because there will be melted wires. I am leaning toword low on freon since you have already been inside the wiring/control unit.

Aug 08, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

I have a Dometic Duo Therm rv Roof Air Conditioner Model# 59516.531.The fan is blowing and the compressor is kicking on but it is not blowing out cold air. Someone said it must be out of freon. Why would...


These are a closed system.(meaning that there is no fill valves for recharging) But a heating & cooling technician can solder them on and re-charge the system. Only problem there is to get an estimate up front, and compare it to buying a new roof unit which also comes with a new warranty, as well as keep in mind that the freon went somewhere, so there is an obvious leak that will need to be addressed as well. Most times it's wiser and cheaper in long run just to buy a new roof unit.
Are you sure that the compressor is kicking in? Did anyone remove cover on roof and check lines from compressor to see if any cooling is occurring?
These don't often leak, that's why I'm asking. Any idea how old the unit is?
Perhaps in fairly new, it's a warranty issue.

Jun 25, 2010 | Dometic Rooftop RV Air Conditioner

4 Answers

Can my duo-therm air conditioner on my rv be recharged?


These unit can be recharged. 134A. You NEED A SERVICE TECH THAT KNOWS HOW TO CHARGE UNIT.RUS

Jun 24, 2009 | Dometic Rooftop RV Air Conditioner

2 Answers

Is an old unit worth fixing?


I recommend going with a new one. Both the coleman and the carrier are excellent and a whole lot more efficient that the 16 year old dometic.

May 01, 2009 | Dometic Rooftop RV Air Conditioner

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