Question about Dometic Rooftop RV Air Conditioner

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Dometic rooftop ac and heat pumps not working ona 2010 heartland 5th wheel trailer will not work

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  • Dometic Master
  • 1,363 Answers

Check your d.c. fuses and circuit brreakers. need a full 12 volts d.c. to operate.

Posted on Aug 17, 2015

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Posted on Jan 02, 2017

22yooper
  • 828 Answers

SOURCE: Circuit Breaker and Dometic Rooftop RV Air

Since your RV A/C works O.K. when plugged in to the land line and the trip happens when you run it on your generator the problem may be related to the generator output. It is possible that the power being supplied by the generator is not handling the surge when the A/C starts. Starting Amperage on start up is about 5 times the running Amperage for about 3 seconds until the compressor comes up to its rated speed.



Posted on Jul 24, 2008

22yooper
  • 828 Answers

SOURCE: PROBLEM WITH DOMETIC RV ROOFTOP AIR conditioner

Check at the compressor terminals between the Red and the terminal for the overload protector to see if you are getting power to the compressor on startup.

Posted on Jul 24, 2008

SOURCE: dometic ac/heat pump

Would suggest it is drawing excessive current, make sure both fans are going, (inside will cycle low/high), or possible faulty reversing valve solenoid, or could be as simple as loose wire connection, how long does it run for and is it on the same 20amp breaker as the rear?if so start by running only the front unit in cooling 15/20min, check fans running, no unusual bearing noises, switch off for 60 sec then back on heat mode, if unit runs without stopping rewire onto separate circuit, if inside fan not working on heat check bi-metal switch in the airway, if running for a while, fans going but not very warm, check reversing valve.
Note, electrical's should be tested by someone who are qualified in the field.

Posted on Nov 06, 2008

  • 68 Answers

SOURCE: btu for dometic 59516.531

59516 is a Brisk Air 15000 BTU.
Thanks for using Fixya
Jerry

Posted on Mar 30, 2009

  • 127 Answers

SOURCE: Compressor doesnt come on in a dometic duotherm

If this is a wall thermostat controlled unit, then check to make sure that you have power coming from the yellow wire on the thermostat when it is placed in the Cool/Auto High mode. If you do not have power at the yellow wire, then you have a bad thermostat. If you do have power, then remove the control unit from the inside of the AC and see if you have power at the Y terminal there. If so, when you turn the thermostat to cool, can you hear a relay clicking in the box? If not, then you have a bad control box. If the relay is clicking, you need to check the power at the compressor relay on the board. It has a black wire to one side and a purple (or blue) wire on the outgoing side. Check to see if you have 120V on the blue wire when the tstat is set to High/Cool. If not, then you need to bypass the freeze switch to make sure that is not the problem. If you do, then you need to go upstairs and check the start capacitor for OK. It is located in the side compartment of the upper unit, it has a small black relay on the top called a PTCR. These often burn out and will cause the compressor not to work. If that is fine, then you go to the top of the compressor to the thermal overload switch. See if you have power at both sides, if so, then you have a bad compressor. If not, then the overload switch is open and not allowing power to the compressor.

Posted on Jul 04, 2009

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1 Answer

RV. when furnace is turned on , fan on rooftop AC unit runs continually


i would say its the relay board or communication cabl between stat and board.

Jun 18, 2014 | Dometic Rooftop RV Air Conditioner

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My Dometic AC is mounted on a sloped roof (as are a lot today). However in humid weather when the AC is putting out a lot of water, the fast speed of the fan pulls water out of the evaporator pan and...


Clean air filter and evaporator coil periodically. And also insulate tightly for the pipelines including drain pipe also. The heat hose observe the water over the pipelines and evaporate. Thanks and helpful?

Jan 17, 2011 | Dometic Rooftop RV Air Conditioner

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Reversing vavle is not switching. rooft top dometic ac w/ heat pump ac is heat pump , heat pump is heat pump, everything is heat pump .any help?


Try lightly tapping the reversing valve in heat and cool mode. If the problem still exist replace reversing valve

Sep 03, 2010 | Dometic Rooftop RV Air Conditioner

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Locating owners manual for 5th wheel & factory appliances


You'll probably find that the actual owners manual for the trailer is just a generic one, that covers many trailers in the fleetwood line-up. I'm guessing your worried about the AC, microwave, water heater & fridge. Get make & model numbers off them & I'll see what I can come up with. As far as items in the trailer other than that or questions, feel free to get back to me with any, and I should be able to explain most if not all. I'll also keep my eyes open at work (RV dealership) for a manual of your year.

Aug 20, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

FAN SHUTS OFF BUT COMPRESSOR KEEPS RUNNING - 6 MONTHS OLD


Depending upon the model of your air conditioner, this may be normal operation.

My newer Dometic air conditioner will run the compressor in a "reverse" mode without the fan occasionally in order to heat the coils. This is done to defrost the coils. After the frost is gone, the fan switches back on and everything goes back to normal.

Jun 30, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Freezing up,stops working


It will need to be looked at, sounds like low on charge.

Sep 18, 2008 | Dometic Rooftop RV Air Conditioner

1 Answer

Ac and heater wont work


Do you hear any clicking at all ( up near AC or down near furnace, when you move the thermostat ? Have you checked you breakers & fuses in the trailer?

Aug 08, 2008 | Dometic Rooftop RV Air Conditioner

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