Question about Dometic Rooftop RV Air Conditioner

4 Answers

HELP??? Ok, I have a brand new 2014 Palomino Sabre fifth wheel. I have had it for approx 4 weeks now. It has 1 13,500 BTU ac unit & 1 15,000 BTU ac unt. They both keep tripping the inside breakers. Note: On both the units the fan will shut off at random times while the compressor keeps running for approx 5 sec the the fan kicks back on. I bought a volt meter tht plugs into a regular wall outlet and the voltage seems to be fine. I checked the wire connections in the units and everything looks perfect. Any ideas would be really appreciated.

Posted by on

  • 1 more comment 
  • Spence Doucet
    Spence Doucet May 12, 2014

    I think i may have found one of the problems. the 13,500btu was on a 15A breaker & i found a manual for the unit & it said it needs to be on a 20A. So i did just tht and no problems so far..

  • wa2yyx May 12, 2014

    That is why I asked you to check on the circuit breaker. 20 amps is what you should have with either a 13.5k or 15k unit. Glad I was able to help.

  • wa2yyx May 12, 2014

    That is why I asked you to check on the circuit breaker. 20 amps is what you should have with either a 13.5k or 15k unit. Glad I was able to help.

×

4 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 10 Answers

Please take this unit to a certified tech. Having issues with both units at the same time is extremely rare. You either have "bad or low voltage" remember that the acs are 110 volt but the controls are 12 volt so make sure you have above 11 volts at the fuse panel for the thermostat at act properly.

Posted on Sep 02, 2014

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 5 Answers

Are you plugging into the correct outlet? These units probabaly can't run off your home power, you need the 50 amp service that is provided at a campground. Most home outlets aren't capable of supplying this. Check this out first.

Mark

Posted on May 12, 2014

Testimonial: "I am plugged into 50Amp shore power"

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 11 Answers

Hi Spence. because the unit is new and both A/Cs are tripping the breakers, you may want to check your power supply cord, if you are using an extension cord make sure it is a 12 guage and as short as possible. also check the size of the breakers that are tripping with the unit manual, possible they put the wrong breakers in when it was built.

Hope that takes care of it
Rayce

Posted on May 11, 2014

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 282 Answers

What was the voltage that you measured? Are the units 220 volt or 120 volt. Units that size are usually fed by 220 volts. What is the current rateing of the circuit breakers? Are they a double breaker with a handeling capacity of 20 amps or are they 15 amps.

You didn't mention if they ever worked? Are you feeding 120 volts or 220 volts to the two units?

Good luck,

Marty

Posted on May 11, 2014

Testimonial: "Im not sure the volts. the 15,000 BTU is on a 20A breaker & the 13,500 btu is on a 15A."

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

mikeandkim5
  • 1 Answer

SOURCE: compressor on ac unit

we have the same problem but it wont dupicate when take it in to be checked replaced lower board but didnot help

Posted on Jul 16, 2008

TheMobilian
  • 8220 Answers

SOURCE: Ac Problems

You must have too many things running on that circuit. Check your connection to the power box.Loose connection on the receptacle can cause the breaker to trip or too many things running on the same circuit. If the breaker is old it might need to be replaced.

Posted on May 10, 2009

  • 166 Answers

SOURCE: keeps tripping breaker when running ac

you need to check that the breaker it rated high enough for the ac unit

Posted on Jun 04, 2009

  • 587 Answers

SOURCE: RV air conditioner. Compressor running, fan stops before cool

The fan motor is getting hot and going off on the internal overload in the motor.
This is caused by either a low voltage, a bad capacitor, or tight or dry bearings in the motor.
To check the bearings turn the power off to the unit, then spin the fan blade if it spins freely then the bearings are ok.
To check the capacitor you will need some kind of tester or you can buy a capacitor and replace it, that's what a lot of people do. They usually don't cost very much.
To check the voltage you will need a voltmeter and measure the volts at the unit.

Posted on Jun 09, 2009

VtToolMan
  • 704 Answers

SOURCE: RV Air Conditioner Keeps Tripping Circuit Breaker & Compressor

It sounds like the unit was miswired at the factory, since when the A/C is "off" at the thermostat, there should be no calls for cooling or for the fan to run.

You also stated the most puzzling issue, with the breaker turned "off" the same thing happens. This shouldn't happen at all, when the power breaker is turned off, there should be no power being supplied to the unit and it shouldn't be able to do anything. Very strange indeed, but likely a major error done when the RV was manufactured, or some wiring in the loom has somehow become shorted and is supplying power from another breaker/source.

I think a call to the manufacturer is in order since there is no easy solution aside from possibly rewiring the A/C circuit.

Not sure when your RV was made, but definately time to call the manufacturer and break out the wiring schematic in an attempt to isolate and resolve the problem.

Hope you find this helpful and best regards!

Posted on Aug 06, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Model 25373156301 air conditioner: What are the dimensions? How many BTU? Last year they were manufactured?


Found very little on that model: Kenmore 25373156301
24 in. Wide, 18 in. Height, 24 in. Depth and approx. 112 lbs.
15,000 BTU, Parts are still available.
Unknown date(s) of manufacture but Sears (Kenmore) does have similar (exact matches) models still in production.

Sep 13, 2014 | Heating & Cooling

1 Answer

2010 25 ft sabre silhouette 5th wheel multiple problems with slide not opening after short trip dealer adjusted lasted 1 use


depending on manufacturer of slide out after driving to destination stop fast slide outs move back when traveling this will move it forward see if that helps if not bad gears on slide out

Sep 05, 2013 | Palomino 2012 Sabre Silhouette 280 RBOK

1 Answer

15,000 btu roof mount 2nd ac nonducted cycles about every 5 or so mins ice cold air for about 1 mins


Have you checked location of probe for return air? Remove filters and find probe to make sure it is about in the middle of flow of return air. Let me know what you find.

Jan 12, 2013 | Dometic Rooftop RV Air Conditioner

1 Answer

WILL A TRACE 2012 INVERTER RUN A 15000 BTU RV AIR CONDITIONER


According to specs, they will take a 44 amp AC power surge. Obviously number and type of batteries as well as battery condition , etc, plugged in, not plugged in to outside hydro, or generator all come in to play here, but a 15,000 BTU roof AC will only draw, 15-17Amps AC when compressor kicking in, ( or less on some new models) and should level out at 12 -13 amp draw after. As well, this will depend on proper wiring to and from main panel as well as AC unit, and incoming voltage, AC unit condition ( cleaned and maintained properly) etc.

Nov 06, 2011 | Xantrex Technology Trace Series Inverter /...

1 Answer

We just bought a new 29" 5th wheel camper, that has one 15,000 BTU roof unit. Should this one unit cool the rv?


Yes if its working properly. A 20 degree temp. differential between its supply air and return air its good.

Jul 02, 2011 | Dometic Rooftop RV Air Conditioner

1 Answer

My rooftop A/C on my fifthwheel does not turn on.


Good possibility it has a fan capacitor gone, but a voltage/ohm, check would be required, and if your not experienced in that area, can be VERY DANGEROUS, if you don't know how to handle them as capacitors can zap you with high voltages (approx, 370- 450 volts) even when disconnected from power. If you know an electrician, that would certainly help.

Jun 18, 2010 | Heating & Cooling

1 Answer

Mr slim ductless ac choices


Try this Air Conditioner Sizing Worksheet from Consumer's Reports. It will help you.

I hope you find this information to be very helpful to you moving forward.

Please leave a rating. :-)

May 09, 2010 | Mitsubishi Mr. Slim MXZ30TN Air...

1 Answer

New Frigidaire 15,000 AC makes knocking sound


Knocking happens when the compressor is faulty. The clicking is often the overheat Klickson switch clicking on and off. If is three weeks old, call it in under warranty.

Jul 10, 2017 | Heating & Cooling

1 Answer

Need the BTU rating for an old Kenmore K948991 a/c


Your model number is not complete enough for a model check.
However, 18,000 btu in todays' units is what you need.

Mar 28, 2009 | Kenmore Heating & Cooling

Not finding what you are looking for?
Dometic Rooftop RV Air Conditioner Logo

145 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dometic Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

Donni Steen

Level 3 Expert

659 Answers

mike cooper

Level 3 Expert

884 Answers

Are you a Dometic Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...