Question about Dometic Rooftop RV Air Conditioner

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What model number Dometic AC unit to add to RV?

I have a Salem 408loft and want to know what model number Dometic unit to put in the front bedroom. It is already wired and has a Dometic thermostat? No dealers can help (which I think is odd)? any help would be great.

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You can use Dometic Brisk Air II model for your RV. It has 13,500 BTU capacity. I used this air conditioning unit for last 2 years on my RV truck. If you want to know more about this unit, you can check this link.

Posted on Jan 29, 2018


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Usually 13,000 in front but if enough power and you don't mind the more expensive one go 15,000

Posted on Nov 14, 2017


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Posted on Jan 02, 2017


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SOURCE: thermostat wiring for second ac unit

I replaced one unite with another and the wires are differance colors the old unites wires are red,purple,yellow,bleck and white the new one have orange,brown,cream,darkpurple,and white

Posted on Aug 02, 2008


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SOURCE: 13500 dometic ac for rv with anilog thermostat

My Unit is only about 5 years old; but it's working great now. I spoke to a man at an RV service department, he suggest replacing the thermostate and Jay box, which is the box inside my roof unit, accessable when I remove the filter. When I replaced the thermostate nothing changed, but the Jay box did the trick. The Jay Box came with a new thermostate anyway, and cost around $80. Good Luck

Posted on Mar 23, 2009

mike bare

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SOURCE: I''ve been working on this thing for three weeks

check the compressor winding resistance from common to start
start to run
run to common
the two lowest should equil the highest
also check shorted to ground
check the capacitors the go bad a lot

Posted on May 17, 2009

Dan Favata

  • 233 Answers

SOURCE: Dometic ac with atwood 1h2c thermostat will not come back on

Just a guess, as I am not familiar with the solar assist, if the stat is wall mounted I would remove it and verify if there is wither standard batteries, or a "watch" style battery. hope this helps

Posted on Jul 27, 2009


Mike Butler

  • 6674 Answers

SOURCE: water dripping out of rv ac into rv.

Is it a ducted system? If yes, check that there isn't gaps between the divider that separates return air at the front, with forced(cold) air. You can usually use a flashlight and look for gaps, or even (very carefully) feel it blowing cold into the warm air return. If you find some gaps, buy some foil tape, and tape them off good and retry and see if it still happens. Some older units experienced cracks in drip trays that allowed condensation to drip inside as well. Get back to me with year of your RV, and whether it's ducted or non-ducted system, and perhaps I can guide you better on what to look for.

Posted on Jun 22, 2010

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I have a 404fb wildwood wondering if it is possible to add a second dometic a.c. in the back bedroom

Yes. Cut hole in roof, install new unit and seal. If you have/want a remote thermostat you would have to run the wires unless you get one with a remote control, so it's easiest to get a unit with the controls on the unit it's self. You can run and secure the power wire over the roof.

Jul 11, 2017 | RVs

1 Answer

I need a second roof top air conditioner in my fifth wheel But there is no vent in bedroom Is it still possible to have one installed

Anything is possible, just depends on how much bother and expense you want to go through. If you check with your manufacturer and give them a make and model number, they can check blueprints and advise if the framing for another vent is already there, just not cut out or used. Then there is the problem of getting hydro up to it and thermostat wires if you decide to go with a thermostat instead of just turning it on at the ceiling assembly. We have done custom installations before even if not framed in by simply framing it in ourselves at a good location. The hydro cable to it may require removing some panels and re-installing them after but that can also be done fairly easy, just takes time and labor. The other thing to consider is if your trailer only has 30 amp service, or park only provides 30 amp service, then you may have to install an alternate (extra) panel to power it, reason being that if you only have 30 amps, and run 2 air conditioners, your almost at your limit and main breaker will be tripping quite often, such as when fridge cuts in, microwave is used etc, if both are on. If unit was designed to run on one, I question why the second is necessary. Perhaps if you give me some details on what you have for an RV , Year, and model and model number of AC unit, we can see if there may be another problem that is causing it not to cool sufficiently.

Jul 05, 2011 | Dometic Rooftop RV Air Conditioner

2 Answers

I have a new Salem travel trailer with Dometic products. Everything appears to work fine, but when I run my furnace and it turns on, my fan blows from my AC unit. I have owned 2 other RV's but...

Yes it sure does sound like something may be wired wrong, Could you please reply with model number of your AC unit as well as thermostat model? To find your AC unit model number if you don't already have it, remove your ceiling air filter assembly, and it should be on the base of the roof unit, facing you.
The base of the roof (upper) unit will have a model and serial number, and if you see a control box where all the wiring attaches as well, get model number from that too if you will. Those numbers should make it easier to determine exactly where the problem is. Thanks.

May 28, 2011 | 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

2 Answers

I purchase a 1997 Salem camper trailer and just replaced the Duo therm 13,000 Unit BTU. Everything was good until it was time to connect the wires from the thermostat unit to the analog thermostat on the...

Pay attention to wires from control box itself at the ceiling assy. Sometimes they will use a different color from control box, to thermostat. For example: Green coming out of control box, is attached to a blue running to thermostat, so you would attach that blue, to "G" (fan) on thermostat. Match thermostat colors to what is at the control box originally, not what color they used to run it to thermostat from there. Most try to match them, but others don't. What model Ac unit, and what model of thermostat do you have?

Jul 30, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Penguin 13500 ac short cycling


Jul 31, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Dometic 57915.531 Air Conditioner Blows 3 amp fuse in control box


The three amp fuse is installed in the board to protect from shorts or overloads created by disconnecting or reconnecting components when DC power is still connected to the system. If the fuse is blowing, then you more than likely have a short in the 12VDC system between the control unit and the thermostat.

1. Pull the cover off of thermostat and remove the +12 (or +7.5 depending on the model) wire. Access the other end of the wire in the AC compartment. Using an ohmmeter, touch the end of the wire at the AC with one lead and touch the control box with the other (or any ground source). If you get a reading other than OL or Infinity, then that wire is shorted out in the wall somewhere. If not, repeat the steps for the rest of wires except the ground of course. If all of these wires appear to be fine, you may need to take it in for some more extensive troubleshooting.

Hope this helps,


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Jul 04, 2009 | Dometic 57915531 Air Conditioner

1 Answer

New install

Rv a/c's are designed to fit in the vents you should have no problem but you will have to get power up to the unit

Jun 01, 2009 | Dometic GEN3107206 Air Conditioner

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